Remove dependency on recipe_engine/shutil.

R=borenet@google.com

Bug: chromium:739984
Change-Id: I077c4e6f494eb7e93851201120048ba1ef5faa07
Reviewed-on: https://skia-review.googlesource.com/21921
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Eric Boren <borenet@google.com>

157 files changed, 2857 insertions, 5596 deletions

diff --git a/infra/bots/recipe_modules/core/__init__.py b/infra/bots/recipe_modules/core/__init__.py
index c7a2dca684..a42574bfa0 100644
--- a/infra/bots/recipe_modules/core/__init__.py
+++ b/infra/bots/recipe_modules/core/__init__.py
@@ -12,7 +12,6 @@ DEPS = [
   'recipe_engine/path',
   'recipe_engine/properties',
   'recipe_engine/python',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
   'vars',
diff --git a/infra/bots/recipe_modules/core/api.py b/infra/bots/recipe_modules/core/api.py
index 5d875f8a19..3db64c2047 100644
--- a/infra/bots/recipe_modules/core/api.py
+++ b/infra/bots/recipe_modules/core/api.py
@@ -26,10 +26,9 @@ class SkiaApi(recipe_api.RecipeApi):
     self.checkout_steps()
 
     if not self.m.path.exists(self.m.vars.tmp_dir):
-      self.m.run.run_once(self.m.shutil.makedirs,
-                          'tmp_dir',
-                          self.m.vars.tmp_dir,
-                          infra_step=True)
+      self.m.run.run_once(self.m.file.ensure_directory,
+                          'makedirs tmp_dir',
+                          self.m.vars.tmp_dir)
 
     self.m.flavor.setup()
 
@@ -46,9 +45,8 @@ class SkiaApi(recipe_api.RecipeApi):
 
     # Create the checkout path if necessary.
     if not self.m.path.exists(self.m.vars.checkout_root):
-      self.m.shutil.makedirs('checkout_path',
-                             self.m.vars.checkout_root,
-                             infra_step=True)
+      self.m.file.ensure_directory('makedirs checkout_path',
+                                   self.m.vars.checkout_root)
 
     # Initial cleanup.
     gclient_cfg = self.m.gclient.make_config(**cfg_kwargs)
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/Housekeeper-Weekly-RecreateSKPs.json b/infra/bots/recipe_modules/core/examples/full.expected/Housekeeper-Weekly-RecreateSKPs.json
index c24d3ceae1..8ff92bbdd7 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/Housekeeper-Weekly-RecreateSKPs.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/Housekeeper-Weekly-RecreateSKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -111,24 +103,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/cross_repo_trybot.json b/infra/bots/recipe_modules/core/examples/full.expected/cross_repo_trybot.json
index fef189fe0b..838d31c461 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/cross_repo_trybot.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/cross_repo_trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/flutter_trybot.json b/infra/bots/recipe_modules/core/examples/full.expected/flutter_trybot.json
index cc6cb6dec6..32589203cc 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/flutter_trybot.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/flutter_trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/flutter",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/flutter"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/no_persistent_checkout.json b/infra/bots/recipe_modules/core/examples/full.expected/no_persistent_checkout.json
index 2b14fe5d9f..f710ace525 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/no_persistent_checkout.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/no_persistent_checkout.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/pdfium_trybot.json b/infra/bots/recipe_modules/core/examples/full.expected/pdfium_trybot.json
index fb99214d5f..019278149d 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/pdfium_trybot.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/pdfium_trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/core/examples/full.expected/test.json b/infra/bots/recipe_modules/core/examples/full.expected/test.json
index efa87523d4..257c13db54 100644
--- a/infra/bots/recipe_modules/core/examples/full.expected/test.json
+++ b/infra/bots/recipe_modules/core/examples/full.expected/test.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -98,24 +90,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipe_modules/ct/__init__.py b/infra/bots/recipe_modules/ct/__init__.py
index 7bb21fc483..bc2ae39f8d 100644
--- a/infra/bots/recipe_modules/ct/__init__.py
+++ b/infra/bots/recipe_modules/ct/__init__.py
@@ -4,8 +4,8 @@
 
 DEPS = [
   'depot_tools/gsutil',
+  'recipe_engine/file',
   'recipe_engine/path',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
 ]
diff --git a/infra/bots/recipe_modules/ct/api.py b/infra/bots/recipe_modules/ct/api.py
index ed302a2283..e14cbd745e 100644
--- a/infra/bots/recipe_modules/ct/api.py
+++ b/infra/bots/recipe_modules/ct/api.py
@@ -37,9 +37,8 @@ class CTApi(recipe_api.RecipeApi):
 
     # Delete and recreate the local dir.
     self.m.run.rmtree(slave_dest_dir)
-    self.m.shutil.makedirs(self.m.path.basename(slave_dest_dir),
-                           slave_dest_dir,
-                           infra_step=True)
+    self.m.file.ensure_directory(
+      'makedirs %s' % self.m.path.basename(slave_dest_dir), slave_dest_dir)
 
     # Populate the empty local dir.
     gsutil_args = ['-m', 'cp']
diff --git a/infra/bots/recipe_modules/ct/examples/full.expected/failed_gsutil.json b/infra/bots/recipe_modules/ct/examples/full.expected/failed_gsutil.json
index c6f14dd68d..ac5bb00e82 100644
--- a/infra/bots/recipe_modules/ct/examples/full.expected/failed_gsutil.json
+++ b/infra/bots/recipe_modules/ct/examples/full.expected/failed_gsutil.json
@@ -16,24 +16,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/skps/slave0",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/skps/slave0"
     ],
     "infra_step": true,
-    "name": "makedirs slave0",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave0"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/ct/examples/full.expected/test.json b/infra/bots/recipe_modules/ct/examples/full.expected/test.json
index 4569906aca..8fcdfd8c93 100644
--- a/infra/bots/recipe_modules/ct/examples/full.expected/test.json
+++ b/infra/bots/recipe_modules/ct/examples/full.expected/test.json
@@ -16,24 +16,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/skps/slave0",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/skps/slave0"
     ],
     "infra_step": true,
-    "name": "makedirs slave0",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave0"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/__init__.py b/infra/bots/recipe_modules/flavor/__init__.py
index 87f33d9a35..de628501bf 100644
--- a/infra/bots/recipe_modules/flavor/__init__.py
+++ b/infra/bots/recipe_modules/flavor/__init__.py
@@ -13,7 +13,6 @@ DEPS = [
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
   'vars',
diff --git a/infra/bots/recipe_modules/flavor/default_flavor.py b/infra/bots/recipe_modules/flavor/default_flavor.py
index cf75e9fac8..0d565e607e 100644
--- a/infra/bots/recipe_modules/flavor/default_flavor.py
+++ b/infra/bots/recipe_modules/flavor/default_flavor.py
@@ -140,8 +140,8 @@ class DefaultFlavorUtils(object):
   def create_clean_host_dir(self, path):
     """Convenience function for creating a clean directory."""
     self.m.run.rmtree(path)
-    self.m.shutil.makedirs(
-        self.m.path.basename(path), path, infra_step=True)
+    self.m.file.ensure_directory(
+        'makedirs %s' % self.m.path.basename(path), path)
 
   def install(self):
     """Run device-specific installation steps."""
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-Android.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-Android.json
index 07fa18707f..2affa0c2e9 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-Android.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Debug-Android.json
@@ -80,24 +80,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-ChromeOS-Clang-Chromebook_513C24_K01-GPU-MaliT860-arm-Release.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-ChromeOS-Clang-Chromebook_513C24_K01-GPU-MaliT860-arm-Release.json
index 5e9b7567fa..631207e7c9 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-ChromeOS-Clang-Chromebook_513C24_K01-GPU-MaliT860-arm-Release.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-ChromeOS-Clang-Chromebook_513C24_K01-GPU-MaliT860-arm-Release.json
@@ -112,24 +112,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Chromecast-GCC-Chorizo-CPU-Cortex_A7-arm-Release.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Chromecast-GCC-Chorizo-CPU-Cortex_A7-arm-Release.json
index ccd9fa9887..fb0dc13b73 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Chromecast-GCC-Chorizo-CPU-Cortex_A7-arm-Release.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Chromecast-GCC-Chorizo-CPU-Cortex_A7-arm-Release.json
@@ -120,24 +120,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-ASAN.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-ASAN.json
index 1f05d9a151..79c93ea303 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-ASAN.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-ASAN.json
@@ -63,24 +63,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
@@ -99,24 +91,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "device_results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "device_results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs device_results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs device_results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-MSAN.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-MSAN.json
index c28230058c..9dc47e5bab 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-MSAN.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-MSAN.json
@@ -63,24 +63,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
@@ -99,24 +91,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "device_results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "device_results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs device_results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs device_results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release.json
index 28e6852986..48e1082074 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release.json
@@ -63,24 +63,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
@@ -99,24 +91,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "device_results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "device_results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs device_results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs device_results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind_AbandonGpuContext.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind_AbandonGpuContext.json
index 5e61686885..a4a0771de9 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind_AbandonGpuContext.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind_AbandonGpuContext.json
@@ -63,24 +63,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
@@ -99,24 +91,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "device_results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "device_results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs device_results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs device_results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug.json
index ddc87a7b73..8f59ca3805 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug.json
@@ -63,24 +63,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
@@ -99,24 +91,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "device_results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "device_results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs device_results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs device_results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm64-Debug.json b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm64-Debug.json
index 65700895d6..bb6341b6e1 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm64-Debug.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm64-Debug.json
@@ -110,24 +110,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
-    ],
-    "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
+    ],
+    "infra_step": true,
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
index 7326513159..9f0ab2a973 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_infra_step.json
@@ -80,24 +80,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
index fc4dd9dc7b..d62eeb8e3a 100644
--- a/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
+++ b/infra/bots/recipe_modules/flavor/examples/full.expected/failed_read_version.json
@@ -80,24 +80,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "results_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "results_dir"
     ],
     "infra_step": true,
-    "name": "makedirs results_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs results_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipe_modules/skia_swarming/__init__.py b/infra/bots/recipe_modules/skia_swarming/__init__.py
index 9ff7a93519..8dd208a018 100644
--- a/infra/bots/recipe_modules/skia_swarming/__init__.py
+++ b/infra/bots/recipe_modules/skia_swarming/__init__.py
@@ -12,7 +12,6 @@ DEPS = [
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
   'swarming',
diff --git a/infra/bots/recipe_modules/skia_swarming/api.py b/infra/bots/recipe_modules/skia_swarming/api.py
index 07bf145557..b5684ce215 100644
--- a/infra/bots/recipe_modules/skia_swarming/api.py
+++ b/infra/bots/recipe_modules/skia_swarming/api.py
@@ -82,10 +82,9 @@ class SkiaSwarmingApi(recipe_api.RecipeApi):
       blacklist: list of regular expressions indicating which files/directories
           not to archive.
     """
-    self.m.shutil.makedirs(
-        'swarming tmp dir',
-        self.swarming_temp_dir,
-        infra_step=True)
+    self.m.file.ensure_directory(
+        'makedirs swarming tmp dir',
+        self.swarming_temp_dir)
     isolated_path = self.isolated_file_path(task_name)
     isolate_args = [
       '--isolate', isolate_path,
diff --git a/infra/bots/recipe_modules/skia_swarming/examples/full.expected/test.json b/infra/bots/recipe_modules/skia_swarming/examples/full.expected/test.json
index 2832ee6657..51801658d0 100644
--- a/infra/bots/recipe_modules/skia_swarming/examples/full.expected/test.json
+++ b/infra/bots/recipe_modules/skia_swarming/examples/full.expected/test.json
@@ -177,24 +177,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-Android.json b/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-Android.json
index 9b702e8030..c1b62f5624 100644
--- a/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-Android.json
+++ b/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-Android.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-iOS.json b/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-iOS.json
index f6a7e2a92f..ba654dd87f 100644
--- a/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-iOS.json
+++ b/infra/bots/recipes/compile.expected/Build-Mac-Clang-arm64-Debug-iOS.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x64-Release-iOS.json b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x64-Release-iOS.json
index f3f48d3fc7..0d16aece62 100644
--- a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x64-Release-iOS.json
+++ b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x64-Release-iOS.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Debug-CommandBuffer.json b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Debug-CommandBuffer.json
index 69b6cbee04..ef8a16c106 100644
--- a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Debug-CommandBuffer.json
+++ b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Debug-CommandBuffer.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Release.json b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Release.json
index 16438063d9..d9d85727f0 100644
--- a/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Release.json
+++ b/infra/bots/recipes/compile.expected/Build-Mac-Clang-x86_64-Release.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm-Release-Chromebook_C100p.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm-Release-Chromebook_C100p.json
index c3c7be7087..54ee674b44 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm-Release-Chromebook_C100p.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm-Release-Chromebook_C100p.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Debug-Android_FrameworkDefs.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Debug-Android_FrameworkDefs.json
index 7e7e8bed93..32f8517b6e 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Debug-Android_FrameworkDefs.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Debug-Android_FrameworkDefs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android.json
index db474747a4..493981a253 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android_Vulkan.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android_Vulkan.json
index 7f75f0f356..c8c74a3244 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android_Vulkan.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-arm64-Release-Android_Vulkan.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-mipsel-Debug-Android.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-mipsel-Debug-Android.json
index 24b9c0e1ac..4e17051f07 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-mipsel-Debug-Android.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-mipsel-Debug-Android.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-ASAN.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-ASAN.json
index 89ad1ca0d3..9c4f9ae9e7 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-ASAN.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-ASAN.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-MSAN.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-MSAN.json
index 1fc33c3cec..7ead220c00 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-MSAN.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug-MSAN.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug.json
index bb5a01002f..43a1a9f4df 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Debug.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Mini.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Mini.json
index 9e8cb3f412..d7767bff89 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Mini.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Mini.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Vulkan.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Vulkan.json
index 05b6c08d5d..98274dd5bb 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Vulkan.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-Clang-x86_64-Release-Vulkan.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-arm-Release-Chromecast.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-arm-Release-Chromecast.json
index cce2d0fbd1..be2fbb2f3b 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-arm-Release-Chromecast.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-arm-Release-Chromecast.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86-Debug.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86-Debug.json
index fce934fb30..7c5b42fc67 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86-Debug.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86-Debug.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-GN.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-GN.json
index 3cbe2deef8..88978651ae 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-GN.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-GN.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-MSAN.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-MSAN.json
index e9bb5fe775..a749d0a571 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-MSAN.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-MSAN.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-NoGPU.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-NoGPU.json
index 797b381ebd..3da5f622ad 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-NoGPU.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-NoGPU.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
index 054c972ad4..1d5ca2bfe8 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-ANGLE.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-ANGLE.json
index 2faa57bc28..6c3b3822eb 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-ANGLE.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-ANGLE.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
index 5d6890cb23..df5d2274c5 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json
index 68c6d293d9..056c8ee9cf 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Flutter_Android.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/flutter",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/flutter"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Mesa.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Mesa.json
index c76b4c6011..223d367f06 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Mesa.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Mesa.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium.json
index e79a0b4aa1..829dcbdb68 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium_SkiaPaths.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium_SkiaPaths.json
index 89d168a6a4..78da0b7403 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium_SkiaPaths.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-PDFium_SkiaPaths.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Shared.json b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Shared.json
index d1b7cd9295..ce4d444218 100644
--- a/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Shared.json
+++ b/infra/bots/recipes/compile.expected/Build-Ubuntu-GCC-x86_64-Release-Shared.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-Clang-arm64-Release-Android.json b/infra/bots/recipes/compile.expected/Build-Win-Clang-arm64-Release-Android.json
index 37580d75ec..cf198a4c90 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-Clang-arm64-Release-Android.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-Clang-arm64-Release-Android.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-ANGLE.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-ANGLE.json
index cf63dbfd13..5ff63e335e 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-ANGLE.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-ANGLE.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-Exceptions.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-Exceptions.json
index 1726382066..978cc15b8b 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-Exceptions.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug-Exceptions.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug.json
index a7e7b13776..52f6b08430 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Debug.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GDI.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GDI.json
index fc95d28712..118dddb2ed 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GDI.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GDI.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GN.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GN.json
index e5f7899be9..a7a9234f74 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GN.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86-Release-GN.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86_64-Release-Vulkan.json b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86_64-Release-Vulkan.json
index 538448fe91..770b34a2ed 100644
--- a/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86_64-Release-Vulkan.json
+++ b/infra/bots/recipes/compile.expected/Build-Win-MSVC-x86_64-Release-Vulkan.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/alternate_repo.json b/infra/bots/recipes/compile.expected/alternate_repo.json
index 0096a798ae..8ae7213090 100644
--- a/infra/bots/recipes/compile.expected/alternate_repo.json
+++ b/infra/bots/recipes/compile.expected/alternate_repo.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/flutter_trybot.json b/infra/bots/recipes/compile.expected/flutter_trybot.json
index be4261a6b9..9c4c4d0616 100644
--- a/infra/bots/recipes/compile.expected/flutter_trybot.json
+++ b/infra/bots/recipes/compile.expected/flutter_trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/flutter",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/flutter"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/pdfium_trybot.json b/infra/bots/recipes/compile.expected/pdfium_trybot.json
index 8e749f228c..c9ed8f6134 100644
--- a/infra/bots/recipes/compile.expected/pdfium_trybot.json
+++ b/infra/bots/recipes/compile.expected/pdfium_trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/compile.expected/trybot.json b/infra/bots/recipes/compile.expected/trybot.json
index ed7d5504c3..a3f9b2b15a 100644
--- a/infra/bots/recipes/compile.expected/trybot.json
+++ b/infra/bots/recipes/compile.expected/trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_C:\\_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_C:\\_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_CPU_BENCH_10k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_CPU_BENCH_10k_SKPs.json
index 22229ae91e..e14e2e7e8b 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_CPU_BENCH_10k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_CPU_BENCH_10k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-CT_BENCH_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_100k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_DM_100k_SKPs.json
index bba0420e8f..ee9fc27ca7 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_100k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_100k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_100k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs.json
index fbec4f3efb..94b2025036 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs_Trybot.json b/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs_Trybot.json
index 95a9220789..9af0c8b75d 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs_Trybot.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_10k_SKPs_Trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -98,24 +90,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -410,24 +394,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -456,24 +432,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -506,24 +474,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -552,24 +512,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -602,24 +554,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -648,24 +592,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -698,24 +634,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -744,24 +672,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -794,24 +714,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -840,24 +752,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs.json
index f95a572187..b2efe384e4 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_2slaves_failure.json b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_2slaves_failure.json
index bc1251aac9..35e0421ff4 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_2slaves_failure.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_2slaves_failure.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_slave3_failure.json b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_slave3_failure.json
index 4b4b6d8d60..7ba694fe15 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_slave3_failure.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_DM_1m_SKPs_slave3_failure.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_DM_1m_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_10k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_10k_SKPs.json
index 9f76dbb2c6..e18ac8763e 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_10k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_10k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_1k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_1k_SKPs.json
index e8439c57a5..1c0669efe9 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_1k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_GPU_BENCH_1k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Perf-Ubuntu-GCC-Golo-GPU-GT610-x86_64-Release-CT_BENCH_1k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_100k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_100k_SKPs.json
index d06d5b20b0..317a69b917 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_100k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_100k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_100k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs.json b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs.json
index 1b01ef850f..1a8d94795c 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -406,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -452,24 +428,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -502,24 +470,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -548,24 +508,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -598,24 +550,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -644,24 +588,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -694,24 +630,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -740,24 +668,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -790,24 +710,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -836,24 +748,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs_Trybot.json b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs_Trybot.json
index fcf032a8a1..b481ff3170 100644
--- a/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs_Trybot.json
+++ b/infra/bots/recipes/ct_skps.expected/CT_IMG_DECODE_10k_SKPs_Trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -98,24 +90,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -410,24 +394,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave1",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave1"
     ],
     "infra_step": true,
-    "name": "makedirs slave1",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave1"
   },
   {
     "cmd": [
@@ -456,24 +432,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir"
   },
   {
     "cmd": [
@@ -506,24 +474,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave2",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave2"
     ],
     "infra_step": true,
-    "name": "makedirs slave2",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave2"
   },
   {
     "cmd": [
@@ -552,24 +512,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (2)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (2)"
   },
   {
     "cmd": [
@@ -602,24 +554,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave3",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave3"
     ],
     "infra_step": true,
-    "name": "makedirs slave3",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave3"
   },
   {
     "cmd": [
@@ -648,24 +592,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (3)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (3)"
   },
   {
     "cmd": [
@@ -698,24 +634,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave4",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave4"
     ],
     "infra_step": true,
-    "name": "makedirs slave4",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave4"
   },
   {
     "cmd": [
@@ -744,24 +672,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (4)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (4)"
   },
   {
     "cmd": [
@@ -794,24 +714,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave5",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]/skps/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-CT_IMG_DECODE_10k_SKPs/slave5"
     ],
     "infra_step": true,
-    "name": "makedirs slave5",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs slave5"
   },
   {
     "cmd": [
@@ -840,24 +752,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/swarming_temp_dir",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/swarming_temp_dir"
     ],
     "infra_step": true,
-    "name": "makedirs swarming tmp dir (5)",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs swarming tmp dir (5)"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/ct_skps.py b/infra/bots/recipes/ct_skps.py
index 3d9c67f7f0..62422529a6 100644
--- a/infra/bots/recipes/ct_skps.py
+++ b/infra/bots/recipes/ct_skps.py
@@ -16,7 +16,6 @@ DEPS = [
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/properties',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'recipe_engine/time',
   'run',
@@ -135,8 +134,8 @@ def RunSteps(api):
     if download_skps:
       # Delete and recreate the skps dir.
       api.run.rmtree(skps_dir)
-      api.shutil.makedirs(
-          api.path.basename(skps_dir), skps_dir, infra_step=True)
+      api.file.ensure_directory(
+          'makedirs %s' % api.path.basename(skps_dir), skps_dir)
 
   # If a blacklist file exists then specify SKPs to be blacklisted.
   blacklists_dir = api.vars.skia_dir.join('infra', 'bots', 'ct', 'blacklists')
diff --git a/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit-Trybot.json b/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit-Trybot.json
index c13e2402c4..92568300e8 100644
--- a/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit-Trybot.json
+++ b/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit-Trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -98,24 +90,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit.json b/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit.json
index b7ce10907b..64dae08ff0 100644
--- a/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit.json
+++ b/infra/bots/recipes/housekeeper.expected/Housekeeper-PerCommit.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/infra.expected/failed_all_updates.json b/infra/bots/recipes/infra.expected/failed_all_updates.json
index 9c8de53759..7e1dc3e504 100644
--- a/infra/bots/recipes/infra.expected/failed_all_updates.json
+++ b/infra/bots/recipes/infra.expected/failed_all_updates.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/infra.expected/failed_one_update.json b/infra/bots/recipes/infra.expected/failed_one_update.json
index 6aa63c6808..b13d2f7c84 100644
--- a/infra/bots/recipes/infra.expected/failed_one_update.json
+++ b/infra/bots/recipes/infra.expected/failed_one_update.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/infra.expected/infra_tests.json b/infra/bots/recipes/infra.expected/infra_tests.json
index d722a0aff4..9221052892 100644
--- a/infra/bots/recipes/infra.expected/infra_tests.json
+++ b/infra/bots/recipes/infra.expected/infra_tests.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android.json
index 626505c430..d75a9f0996 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android.json
@@ -677,24 +677,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android.json
index 9801df3104..d42c12ea09 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android.json
@@ -677,24 +677,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-Android/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android.json
index efcbef86c0..51cbec0836 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android.json
@@ -677,24 +677,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
index b04f9925f5..6118f2a314 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
@@ -677,24 +677,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android.json b/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android.json
index bbfc10b4cb..ace6e519c0 100644
--- a/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android.json
+++ b/infra/bots/recipes/perf.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android.json
@@ -677,24 +677,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release.json b/infra/bots/recipes/perf.expected/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release.json
index 7460649d3a..68ee4e9367 100644
--- a/infra/bots/recipes/perf.expected/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release.json
@@ -787,24 +787,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release.json b/infra/bots/recipes/perf.expected/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release.json
index 8c1994f034..fe897263d8 100644
--- a/infra/bots/recipes/perf.expected/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release.json
@@ -390,24 +390,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Chromecast-GCC-Chorizo-GPU-Cortex_A7-arm-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release.json b/infra/bots/recipes/perf.expected/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release.json
index 43bfd6058c..56cde57440 100644
--- a/infra/bots/recipes/perf.expected/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -231,24 +223,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release.json b/infra/bots/recipes/perf.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release.json
index ddcbc25863..b1c2e954e6 100644
--- a/infra/bots/recipes/perf.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -236,24 +228,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json b/infra/bots/recipes/perf.expected/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
index 86344c029b..b41838df68 100644
--- a/infra/bots/recipes/perf.expected/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -239,24 +231,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE.json b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE.json
index 76446eb87c..436f53b565 100644
--- a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE.json
+++ b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -232,24 +224,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE.json b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE.json
index 5bb9faa063..a9a19d2cc2 100644
--- a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE.json
+++ b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -227,24 +219,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan.json b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan.json
index b342641b58..4936586715 100644
--- a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan.json
+++ b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan\\data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -242,28 +234,20 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Release-Vulkan\\data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
-]
+]
\ No newline at end of file
diff --git a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE.json b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE.json
index 11c1f65cb8..54a011135c 100644
--- a/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE.json
+++ b/infra/bots/recipes/perf.expected/Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -230,24 +222,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Release-ANGLE\\data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release.json b/infra/bots/recipes/perf.expected/Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release.json
index a107e10392..61d93d93e7 100644
--- a/infra/bots/recipes/perf.expected/Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release\\data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -230,24 +222,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release\\data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\perfdata\\Perf-Win2k8-MSVC-GCE-CPU-AVX2-x86_64-Release\\data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.expected/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json b/infra/bots/recipes/perf.expected/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
index b33d45bfb7..00b3ca3dac 100644
--- a/infra/bots/recipes/perf.expected/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
+++ b/infra/bots/recipes/perf.expected/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
@@ -631,28 +631,20 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release/data"
     ],
     "env": {
       "IOS_BUNDLE_ID": "com.google.nanobench",
       "IOS_MOUNT_POINT": "[START_DIR]/mnt_iosdevice"
     },
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/perf.expected/trybot.json b/infra/bots/recipes/perf.expected/trybot.json
index 0193fb5232..cb2be0f43d 100644
--- a/infra/bots/recipes/perf.expected/trybot.json
+++ b/infra/bots/recipes/perf.expected/trybot.json
@@ -100,24 +100,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Win10-MSVC-ShuttleB-GPU-IntelHD4600-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Win10-MSVC-ShuttleB-GPU-IntelHD4600-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs data",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs data"
   },
   {
     "cmd": [
@@ -235,24 +227,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Win10-MSVC-ShuttleB-GPU-IntelHD4600-x86_64-Release/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Win10-MSVC-ShuttleB-GPU-IntelHD4600-x86_64-Release/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/perf.py b/infra/bots/recipes/perf.py
index 312283be71..98ddb1db88 100644
--- a/infra/bots/recipes/perf.py
+++ b/infra/bots/recipes/perf.py
@@ -13,12 +13,12 @@ DEPS = [
   'core',
   'env',
   'flavor',
+  'recipe_engine/file',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'recipe_engine/time',
   'run',
@@ -318,7 +318,7 @@ def perf_steps(api):
 
   # Copy results to swarming out dir.
   if api.vars.upload_perf_results:
-    api.shutil.makedirs('perf_dir', api.vars.perf_data_dir, infra_step=True)
+    api.file.ensure_directory('makedirs perf_dir', api.vars.perf_data_dir)
     api.flavor.copy_directory_contents_to_host(
         api.flavor.device_dirs.perf_data_dir,
         api.vars.perf_data_dir)
diff --git a/infra/bots/recipes/recreate_skps.expected/Housekeeper-Nightly-RecreateSKPs_Canary.json b/infra/bots/recipes/recreate_skps.expected/Housekeeper-Nightly-RecreateSKPs_Canary.json
index 8ee92cfcde..f1dfef6bcf 100644
--- a/infra/bots/recipes/recreate_skps.expected/Housekeeper-Nightly-RecreateSKPs_Canary.json
+++ b/infra/bots/recipes/recreate_skps.expected/Housekeeper-Nightly-RecreateSKPs_Canary.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -111,24 +103,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -180,24 +164,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/skp_output",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/skp_output"
     ],
     "infra_step": true,
-    "name": "makedirs skp_output",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs skp_output"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/recreate_skps.expected/Housekeeper-Weekly-RecreateSKPs.json b/infra/bots/recipes/recreate_skps.expected/Housekeeper-Weekly-RecreateSKPs.json
index 26786146cf..8ce39b47d8 100644
--- a/infra/bots/recipes/recreate_skps.expected/Housekeeper-Weekly-RecreateSKPs.json
+++ b/infra/bots/recipes/recreate_skps.expected/Housekeeper-Weekly-RecreateSKPs.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -111,24 +103,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -180,24 +164,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/skp_output",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/skp_output"
     ],
     "infra_step": true,
-    "name": "makedirs skp_output",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs skp_output"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/recreate_skps.expected/failed_upload.json b/infra/bots/recipes/recreate_skps.expected/failed_upload.json
index 2155c65b8e..4d0e39be91 100644
--- a/infra/bots/recipes/recreate_skps.expected/failed_upload.json
+++ b/infra/bots/recipes/recreate_skps.expected/failed_upload.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -111,24 +103,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -180,24 +164,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/skp_output",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/skp_output"
     ],
     "infra_step": true,
-    "name": "makedirs skp_output",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs skp_output"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/recreate_skps.py b/infra/bots/recipes/recreate_skps.py
index 1d4968605f..07ceba8383 100644
--- a/infra/bots/recipes/recreate_skps.py
+++ b/infra/bots/recipes/recreate_skps.py
@@ -16,7 +16,6 @@ DEPS = [
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
   'vars',
@@ -60,7 +59,7 @@ def RunSteps(api):
   output_dir = api.path['start_dir'].join('skp_output')
   if api.path.exists(output_dir):
     api.run.rmtree(output_dir)
-  api.shutil.makedirs('skp_output', output_dir, infra_step=True)
+  api.file.ensure_directory('makedirs skp_output', output_dir)
 
   # Capture the SKPs.
   asset_dir = api.vars.infrabots_dir.join('assets', 'skp')
diff --git a/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench.json b/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench.json
index 09c6012dd6..c4f2efa230 100644
--- a/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench.json
+++ b/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -264,24 +256,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench.json b/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench.json
index 4f623b2366..f86a92e763 100644
--- a/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench.json
+++ b/infra/bots/recipes/skpbench.expected/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -264,24 +256,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Vulkan_Skpbench/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/skpbench.expected/trybot.json b/infra/bots/recipes/skpbench.expected/trybot.json
index e93a574657..56df0ee039 100644
--- a/infra/bots/recipes/skpbench.expected/trybot.json
+++ b/infra/bots/recipes/skpbench.expected/trybot.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
@@ -264,24 +256,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench/data",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/perfdata/Perf-Android-Clang-PixelC-GPU-TegraX1-arm64-Release-Android_Skpbench/data"
     ],
     "infra_step": true,
-    "name": "makedirs perf_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs perf_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/skpbench.py b/infra/bots/recipes/skpbench.py
index fe57b1d196..7353625cde 100644
--- a/infra/bots/recipes/skpbench.py
+++ b/infra/bots/recipes/skpbench.py
@@ -11,16 +11,16 @@ import calendar
 
 DEPS = [
   'core',
+  'flavor',
   'recipe_engine/context',
+  'recipe_engine/file',
   'recipe_engine/path',
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'recipe_engine/time',
   'run',
-  'flavor',
   'vars',
 ]
 
@@ -78,7 +78,7 @@ def skpbench_steps(api):
 
   now = api.time.utcnow()
   ts = int(calendar.timegm(now.utctimetuple()))
-  api.shutil.makedirs('perf_dir', api.vars.perf_data_dir, infra_step=True)
+  api.file.ensure_directory('makedirs perf_dir', api.vars.perf_data_dir)
   json_path = api.path.join(
       api.vars.perf_data_dir,
       'skpbench_%s_%d.json' % (api.vars.got_revision, ts))
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-AndroidOne-GPU-Mali400MP2-arm-Release-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-AndroidOne-GPU-Mali400MP2-arm-Release-Android.json
index c435505581..6ec8b5f49e 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-AndroidOne-GPU-Mali400MP2-arm-Release-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-AndroidOne-GPU-Mali400MP2-arm-Release-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-Ci20-CPU-IngenicJZ4780-mipsel-Release-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-Ci20-CPU-IngenicJZ4780-mipsel-Release-Android.json
index b69ae2037c..9e8aba4600 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-Ci20-CPU-IngenicJZ4780-mipsel-Release-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-Ci20-CPU-IngenicJZ4780-mipsel-Release-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Debug-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Debug-Android.json
index 047049b8f3..5278d2fcfb 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Debug-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS6-GPU-MaliT760-arm64-Debug-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS7_G930A-GPU-Adreno530-arm64-Debug-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS7_G930A-GPU-Adreno530-arm64-Debug-Android.json
index 459fa14e9a..6b4067daf2 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS7_G930A-GPU-Adreno530-arm64-Debug-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-GalaxyS7_G930A-GPU-Adreno530-arm64-Debug-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-Android.json
index ad84597c39..79df0f5179 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus10-GPU-MaliT604-arm-Release-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus10-GPU-MaliT604-arm-Release-Android.json
index a4e3838322..869179ced5 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus10-GPU-MaliT604-arm-Release-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus10-GPU-MaliT604-arm-Release-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5-GPU-Adreno330-arm-Release-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5-GPU-Adreno330-arm-Release-Android.json
index 047aa50a35..75428a06d7 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5-GPU-Adreno330-arm-Release-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus5-GPU-Adreno330-arm-Release-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus6p-GPU-Adreno430-arm64-Debug-Android_Vulkan.json b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus6p-GPU-Adreno430-arm64-Debug-Android_Vulkan.json
index c89baf0b3f..358facaf9a 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus6p-GPU-Adreno430-arm64-Debug-Android_Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus6p-GPU-Adreno430-arm64-Debug-Android_Vulkan.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-GPU-Tegra3-arm-Debug-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-GPU-Tegra3-arm-Debug-Android.json
index ad25ca43d7..505d53b410 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-GPU-Tegra3-arm-Debug-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-Nexus7-GPU-Tegra3-arm-Debug-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-CPU-SSE4-x86-Release-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-CPU-SSE4-x86-Release-Android.json
index b107e6632e..dd6dc1b81f 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-CPU-SSE4-x86-Release-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-CPU-SSE4-x86-Release-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json b/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
index 911ef05c3a..402f43c2af 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-Android_Vulkan.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-PixelC-CPU-TegraX1-arm64-Debug-Android.json b/infra/bots/recipes/test.expected/Test-Android-Clang-PixelC-CPU-TegraX1-arm64-Debug-Android.json
index 0ca2cf67a2..50d3829dbc 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-PixelC-CPU-TegraX1-arm64-Debug-Android.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-PixelC-CPU-TegraX1-arm64-Debug-Android.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Android-Clang-PixelXL-GPU-Adreno530-arm64-Debug-Android_Vulkan.json b/infra/bots/recipes/test.expected/Test-Android-Clang-PixelXL-GPU-Adreno530-arm64-Debug-Android_Vulkan.json
index 4a73713603..88592cfb01 100644
--- a/infra/bots/recipes/test.expected/Test-Android-Clang-PixelXL-GPU-Adreno530-arm64-Debug-Android_Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Android-Clang-PixelXL-GPU-Adreno530-arm64-Debug-Android_Vulkan.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Debug.json b/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Debug.json
index 1cb43f5387..b2224732df 100644
--- a/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-ChromeOS-Clang-Chromebook_C100p-GPU-MaliT764-arm-Debug.json
@@ -603,24 +603,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -668,24 +660,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Debug.json b/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Debug.json
index 7a62324d59..5e5877e892 100644
--- a/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-GPU-IntelHD4000-x86_64-Debug-CommandBuffer.json b/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-GPU-IntelHD4000-x86_64-Debug-CommandBuffer.json
index 5e0d2cfd3b..56afb844c2 100644
--- a/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-GPU-IntelHD4000-x86_64-Debug-CommandBuffer.json
+++ b/infra/bots/recipes/test.expected/Test-Mac-Clang-MacMini6.2-GPU-IntelHD4000-x86_64-Debug-CommandBuffer.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-SK_FORCE_RASTER_PIPELINE_BLITTER.json b/infra/bots/recipes/test.expected/Test-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-SK_FORCE_RASTER_PIPELINE_BLITTER.json
index 3e2e5cec68..dd25db0449 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-SK_FORCE_RASTER_PIPELINE_BLITTER.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-SK_FORCE_RASTER_PIPELINE_BLITTER.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86-Debug.json b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86-Debug.json
index 555732082e..092d8686cb 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
index ad1c343a87..2f1a1c8448 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-SK_USE_DISCARDABLE_SCALEDIMAGECACHE.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug.json b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug.json
index 160be4e296..91c9206900 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC5PPYH-GPU-IntelHD405-x86_64-Debug.json b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC5PPYH-GPU-IntelHD405-x86_64-Debug.json
index 23c85cde91..675ef70bf8 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC5PPYH-GPU-IntelHD405-x86_64-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC5PPYH-GPU-IntelHD405-x86_64-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
index 6a3e84ce3c..46267f666d 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
index 227bb7e215..1a24d38fbb 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUC6i5SYK-GPU-IntelIris540-x86_64-Release.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUCDE3815TYKHE-GPU-IntelBayTrail-x86_64-Debug.json b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUCDE3815TYKHE-GPU-IntelBayTrail-x86_64-Debug.json
index b3f0b33414..c49db19056 100644
--- a/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUCDE3815TYKHE-GPU-IntelBayTrail-x86_64-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Ubuntu16-Clang-NUCDE3815TYKHE-GPU-IntelBayTrail-x86_64-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-Vulkan.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-Vulkan.json
index b13fc56fe8..5f7f9204cb 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-AlphaR2-GPU-RadeonR9M470X-x86_64-Debug-Vulkan.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC5i7RYH-GPU-IntelIris6100-x86_64-Release-ReleaseAndAbandonGpuContext.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC5i7RYH-GPU-IntelIris6100-x86_64-Release-ReleaseAndAbandonGpuContext.json
index 9f2e2bc4ab..29101fc482 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC5i7RYH-GPU-IntelIris6100-x86_64-Release-ReleaseAndAbandonGpuContext.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC5i7RYH-GPU-IntelIris6100-x86_64-Release-ReleaseAndAbandonGpuContext.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-ANGLE.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-ANGLE.json
index 4cc58d3a1e..930a3bc143 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-ANGLE.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-ANGLE.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
index 9f1dbd1785..afcd7c8a57 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-NUC6i5SYK-GPU-IntelIris540-x86_64-Debug-Vulkan.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan.json
index 60a22bc147..3d8b31e3ac 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleA-GPU-GTX660-x86_64-Debug-Vulkan.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Debug-ANGLE.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Debug-ANGLE.json
index bcb5fe7161..e882e3eb81 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Debug-ANGLE.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ShuttleC-GPU-GTX960-x86_64-Debug-ANGLE.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ZBOX-GPU-GTX1070-x86_64-Debug-Vulkan.json b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ZBOX-GPU-GTX1070-x86_64-Debug-Vulkan.json
index 75bacb23a7..3a3c734226 100644
--- a/infra/bots/recipes/test.expected/Test-Win10-MSVC-ZBOX-GPU-GTX1070-x86_64-Debug-Vulkan.json
+++ b/infra/bots/recipes/test.expected/Test-Win10-MSVC-ZBOX-GPU-GTX1070-x86_64-Debug-Vulkan.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-Win8-MSVC-Golo-CPU-AVX-x86-Debug.json b/infra/bots/recipes/test.expected/Test-Win8-MSVC-Golo-CPU-AVX-x86-Debug.json
index c9dd04fa28..985d3be2cb 100644
--- a/infra/bots/recipes/test.expected/Test-Win8-MSVC-Golo-CPU-AVX-x86-Debug.json
+++ b/infra/bots/recipes/test.expected/Test-Win8-MSVC-Golo-CPU-AVX-x86-Debug.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]\\dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]\\dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]\\tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]\\resources\\fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]\\tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json b/infra/bots/recipes/test.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
index 1236aad895..069fe4d566 100644
--- a/infra/bots/recipes/test.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
+++ b/infra/bots/recipes/test.expected/Test-iOS-Clang-iPadMini4-GPU-GX6450-arm-Release.json
@@ -491,28 +491,20 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "env": {
       "IOS_BUNDLE_ID": "com.google.dm",
       "IOS_MOUNT_POINT": "[START_DIR]/mnt_iosdevice"
     },
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -550,28 +542,20 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "env": {
       "IOS_BUNDLE_ID": "com.google.dm",
       "IOS_MOUNT_POINT": "[START_DIR]/mnt_iosdevice"
     },
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/failed_dm.json b/infra/bots/recipes/test.expected/failed_dm.json
index dccd54070c..3e84ce2384 100644
--- a/infra/bots/recipes/test.expected/failed_dm.json
+++ b/infra/bots/recipes/test.expected/failed_dm.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/failed_get_hashes.json b/infra/bots/recipes/test.expected/failed_get_hashes.json
index 9b455528a8..1b8d99d4b2 100644
--- a/infra/bots/recipes/test.expected/failed_get_hashes.json
+++ b/infra/bots/recipes/test.expected/failed_get_hashes.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/failed_pull.json b/infra/bots/recipes/test.expected/failed_pull.json
index d3fd49359b..f19f5290aa 100644
--- a/infra/bots/recipes/test.expected/failed_pull.json
+++ b/infra/bots/recipes/test.expected/failed_pull.json
@@ -525,24 +525,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
@@ -584,24 +576,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.expected/trybot.json b/infra/bots/recipes/test.expected/trybot.json
index 01007aeb7e..50563bc0ca 100644
--- a/infra/bots/recipes/test.expected/trybot.json
+++ b/infra/bots/recipes/test.expected/trybot.json
@@ -100,47 +100,31 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_[SWARM_OUT_DIR]]/dm",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "infra_step": true,
-    "name": "makedirs dm",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs dm"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/test.py b/infra/bots/recipes/test.py
index e2a42d98c2..82ebfcde1a 100644
--- a/infra/bots/recipes/test.py
+++ b/infra/bots/recipes/test.py
@@ -11,13 +11,13 @@ DEPS = [
   'env',
   'flavor',
   'recipe_engine/context',
+  'recipe_engine/file',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/python',
   'recipe_engine/raw_io',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'run',
   'vars',
@@ -606,10 +606,9 @@ def test_steps(api):
     hash_filename = 'uninteresting_hashes.txt'
 
     # Ensure that the tmp_dir exists.
-    api.run.run_once(api.shutil.makedirs,
-                     'tmp_dir',
-                     api.vars.tmp_dir,
-                     infra_step=True)
+    api.run.run_once(api.file.ensure_directory,
+                     'makedirs tmp_dir',
+                     api.vars.tmp_dir)
 
     host_hashes_file = api.vars.tmp_dir.join(hash_filename)
     hashes_file = api.flavor.device_path_join(
diff --git a/infra/bots/recipes/update_meta_config.expected/Housekeeper-Nightly-UpdateMetaConfig.json b/infra/bots/recipes/update_meta_config.expected/Housekeeper-Nightly-UpdateMetaConfig.json
index 1783481428..a8fe69b1c6 100644
--- a/infra/bots/recipes/update_meta_config.expected/Housekeeper-Nightly-UpdateMetaConfig.json
+++ b/infra/bots/recipes/update_meta_config.expected/Housekeeper-Nightly-UpdateMetaConfig.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/update_meta_config.expected/failed_update.json b/infra/bots/recipes/update_meta_config.expected/failed_update.json
index e2f8e0f55c..09458952a1 100644
--- a/infra/bots/recipes/update_meta_config.expected/failed_update.json
+++ b/infra/bots/recipes/update_meta_config.expected/failed_update.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -94,24 +86,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/update_meta_config.expected/trybot_test.json b/infra/bots/recipes/update_meta_config.expected/trybot_test.json
index 29b404cfda..16bcf062f1 100644
--- a/infra/bots/recipes/update_meta_config.expected/trybot_test.json
+++ b/infra/bots/recipes/update_meta_config.expected/trybot_test.json
@@ -3,24 +3,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[CUSTOM_/_B_WORK]",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[CUSTOM_/_B_WORK]"
     ],
     "infra_step": true,
-    "name": "makedirs checkout_path",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs checkout_path"
   },
   {
     "cmd": [
@@ -98,24 +90,16 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp"
     ],
     "infra_step": true,
-    "name": "makedirs tmp_dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp_dir"
   },
   {
     "name": "$result",
diff --git a/infra/bots/recipes/upload_dm_results.expected/failed_all.json b/infra/bots/recipes/upload_dm_results.expected/failed_all.json
index 2966786e78..563b37d1ae 100644
--- a/infra/bots/recipes/upload_dm_results.expected/failed_all.json
+++ b/infra/bots/recipes/upload_dm_results.expected/failed_all.json
@@ -3,76 +3,70 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp_upload",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp_upload"
     ],
     "infra_step": true,
-    "name": "makedirs tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp dir"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/dm.json",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/verbose.log",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy verbose.log"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/dm.json"
     ],
-    "name": "rm old dm.json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/verbose.log"
     ],
-    "name": "rm old verbose.log",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old verbose.log"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/upload_dm_results.expected/failed_once.json b/infra/bots/recipes/upload_dm_results.expected/failed_once.json
index 9d6af8d00c..08ff3cb415 100644
--- a/infra/bots/recipes/upload_dm_results.expected/failed_once.json
+++ b/infra/bots/recipes/upload_dm_results.expected/failed_once.json
@@ -3,76 +3,70 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp_upload",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp_upload"
     ],
     "infra_step": true,
-    "name": "makedirs tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp dir"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/dm.json",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/verbose.log",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy verbose.log"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/dm.json"
     ],
-    "name": "rm old dm.json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/verbose.log"
     ],
-    "name": "rm old verbose.log",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old verbose.log"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/upload_dm_results.expected/normal_bot.json b/infra/bots/recipes/upload_dm_results.expected/normal_bot.json
index 0d0b3c1267..0d108ac802 100644
--- a/infra/bots/recipes/upload_dm_results.expected/normal_bot.json
+++ b/infra/bots/recipes/upload_dm_results.expected/normal_bot.json
@@ -3,76 +3,70 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp_upload",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp_upload"
     ],
     "infra_step": true,
-    "name": "makedirs tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp dir"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/dm.json",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/verbose.log",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy verbose.log"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/dm.json"
     ],
-    "name": "rm old dm.json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/verbose.log"
     ],
-    "name": "rm old verbose.log",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old verbose.log"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/upload_dm_results.expected/trybot.json b/infra/bots/recipes/upload_dm_results.expected/trybot.json
index 9f733a7e7f..341b7fe5e4 100644
--- a/infra/bots/recipes/upload_dm_results.expected/trybot.json
+++ b/infra/bots/recipes/upload_dm_results.expected/trybot.json
@@ -3,76 +3,70 @@
     "cmd": [
       "python",
       "-u",
-      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
-      "[START_DIR]/tmp_upload",
-      "511"
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "ensure-directory",
+      "--mode",
+      "0777",
+      "[START_DIR]/tmp_upload"
     ],
     "infra_step": true,
-    "name": "makedirs tmp dir",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
-      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
-      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
-      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
-      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
-      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
-      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "name": "makedirs tmp dir"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/dm.json",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "copy",
       "[START_DIR]/dm/verbose.log",
       "[START_DIR]/tmp_upload"
     ],
+    "infra_step": true,
     "name": "copy verbose.log"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/dm.json"
     ],
-    "name": "rm old dm.json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old dm.json"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "\nimport os\nimport sys\nos.remove(sys.argv[1])\n",
+      "RECIPE_MODULE[recipe_engine::file]/resources/fileutil.py",
+      "--json-output",
+      "/path/to/tmp/json",
+      "remove",
       "[START_DIR]/dm/verbose.log"
     ],
-    "name": "rm old verbose.log",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import os@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@os.remove(sys.argv[1])@@@",
-      "@@@STEP_LOG_END@python.inline@@@"
-    ]
+    "infra_step": true,
+    "name": "rm old verbose.log"
   },
   {
     "cmd": [
diff --git a/infra/bots/recipes/upload_dm_results.py b/infra/bots/recipes/upload_dm_results.py
index acfb426170..61d52ac0cf 100644
--- a/infra/bots/recipes/upload_dm_results.py
+++ b/infra/bots/recipes/upload_dm_results.py
@@ -14,7 +14,6 @@ DEPS = [
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/properties',
-  'recipe_engine/shutil',
   'recipe_engine/step',
   'recipe_engine/time',
 ]
@@ -54,11 +53,11 @@ def RunSteps(api):
   json_file = results_dir.join(DM_JSON)
   log_file = results_dir.join(VERBOSE_LOG)
   tmp_dir = api.path['start_dir'].join('tmp_upload')
-  api.shutil.makedirs('tmp dir', tmp_dir, infra_step=True)
-  api.shutil.copy('copy dm.json', json_file, tmp_dir)
-  api.shutil.copy('copy verbose.log', log_file, tmp_dir)
-  api.shutil.remove('rm old dm.json', json_file)
-  api.shutil.remove('rm old verbose.log', log_file)
+  api.file.ensure_directory('makedirs tmp dir', tmp_dir)
+  api.file.copy('copy dm.json', json_file, tmp_dir)
+  api.file.copy('copy verbose.log', log_file, tmp_dir)
+  api.file.remove('rm old dm.json', json_file)
+  api.file.remove('rm old verbose.log', log_file)
 
   # Upload the images.
   image_dest_path = 'gs://%s/dm-images-v1' % api.properties['gs_bucket']