[[!comment format=mdwn
 username="joey"
 subject="""comment 1"""
 date="2016-07-11T16:36:11Z"
 content="""
Hmm, my assumption is that use of checkpresentkey --batch is in some kind
of loop, or function call, where you'd write a key to it, read a response
back, and now you know whether that key is present.

Does your use case involve something like shell scripting? I suppose if you
have a big list of keys and want to narrow it to only keys that are present
or missing, you could be trying to pipe it through checkpresentkey --batch.
"""]]