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Diffstat (limited to 'doc_src/index.hdr.in')
| -rw-r--r-- | doc_src/index.hdr.in | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/doc_src/index.hdr.in b/doc_src/index.hdr.in index 51bf4e43..9e67724a 100644 --- a/doc_src/index.hdr.in +++ b/doc_src/index.hdr.in @@ -413,7 +413,7 @@ command line. These are the general purpose tab completions that \c fish provides: - Completion of commands (builtins, functions and regular programs). -- Completion of environment variable names. +- Completion of shell variable names. - Completion of usernames for tilde expansion. - Completion of filenames, even on strings with wildcards such as '*', '**' and '?'. - Completion of job ID, job name and process names for <a href="#expand-process">process expansion</a>. @@ -559,7 +559,7 @@ undergoes the process of parameter expansion before it is sent on to the command. Parameter expansion is a powerful mechanism that allows you to expand the parameter in various ways, including performing wildcard matching on files, inserting the value of -environment variables into the parameter or even using the output of +a shell variable into the parameter or even using the output of another command as a parameter list. \subsection expand-wildcard Wildcards @@ -634,10 +634,10 @@ The command <code>mv *.{c,h} src/</code> moves all files with the suffix \subsection expand-variable Variable expansion -A dollar sign followed by a string of characters is expanded into the -value of the environment variable with the same name. For an -introduction to the concept of environment variables, read the <a -href="#variables">Environment variables</a> section. +A dollar sign followed by a string of characters is expanded into the +value of the shell variable with the same name. For an +introduction to the concept of shell variables, read the +<a href="#variables">Shell variables</a> section. Undefined and empty variables expand to nothing. @@ -699,7 +699,7 @@ instead be expressed as <code>$$foo[1][5]</code>. \subsection expand-index-range Index range expansion -Both command substitution and environment variables support accessing only +Both command substitution and shell variable expansion support accessing only specific items by providing a set of indices in square brackets. It's often needed to access a sequence of elements. To do this, use the range operator '..' for this. A range <code>'a..b'</code>, where range limits 'a' @@ -799,10 +799,12 @@ If the current directory contains the files 'foo' and 'bar', the command will output 'abar1 abar2 abar3 afoo1 afoo2 afoo3'. -\section variables Environment variables +\section variables Shell variables -Environment variables are named pieces of data, which can be created, deleted -and their values changed and used by the user. +Shell variables are named pieces of data, which can be created, deleted +and their values changed and used by the user. Variables may optionally be "exported", so +that a copy of the variable is available to any subprocesses the shell creates. An +exported variable is referred to as an "environment variable". To set a variable value, use the <a href="commands.html#set"> \c set command</a>. |