fish-shell/doc_src/if.txt

\section if if - conditionally execute a command

\subsection if-synopsis Synopsis
\fish{synopsis}
if CONDITION; COMMANDS_TRUE...; [else if CONDITION2; COMMANDS_TRUE2...;] [else; COMMANDS_FALSE...;] end
\endfish

\subsection if-description Description

`if` will execute the command `CONDITION`. If the condition's
exit status is 0, the commands `COMMANDS_TRUE` will execute.  If the
exit status is not 0 and `else` is given, `COMMANDS_FALSE` will
be executed.

In order to use the exit status of multiple commands as the condition
of an if block, use <a href="#begin">`begin; ...; end`</a> and
the short circuit commands <a href="commands.html#and">`and`</a>
and <a href="commands.html#or">`or`</a>.

The exit status of the last foreground command to exit can always be
accessed using the <a href="index.html#variables-status">$status</a>
variable.

\subsection if-example Example

\fish
if test -f foo.txt
    echo foo.txt exists
else if test -f bar.txt
    echo bar.txt exists
else
    echo foo.txt and bar.txt do not exist
end
\endfish

will print `foo.txt exists` if the file foo.txt
exists and is a regular file, otherwise it will print
`bar.txt exists` if the file bar.txt exists
and is a regular file, otherwise it will print
`foo.txt and bar.txt do not exist`.
Fix casing and other minor issues in documentation darcs-hash:20061031152316-ac50b-e68db9853d6e9461a0c054f1ea290704ccfc0a31.gz 2006-10-31 15:23:16 +00:00			`\section if if - conditionally execute a command`
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00
			`\subsection if-synopsis Synopsis`
Simplify styling 2014-08-01 12:25:41 +00:00			`\fish{synopsis}`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`if CONDITION; COMMANDS_TRUE...; [else if CONDITION2; COMMANDS_TRUE2...;] [else; COMMANDS_FALSE...;] end`
			`\endfish`
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00
			`\subsection if-description Description`
Updates to the documentation - add a few crossreferences, remove redundant listing of builtins and update the todo list darcs-hash:20061102134725-ac50b-802d5cf8754ff94c4cc9533b2ff16a759e9aa2c9.gz 2006-11-02 13:47:25 +00:00
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`if` will execute the command `CONDITION`. If the condition's
			exit status is 0, the commands `COMMANDS_TRUE` will execute. If the
			exit status is not 0 and `else` is given, `COMMANDS_FALSE` will
remove trialing spaces #2 2010-09-18 02:18:26 +00:00			`be executed.`
Documentation updates darcs-hash:20061111105208-ac50b-27e335ba701b021d3119206e91d68c8504d45c2b.gz 2006-11-11 10:52:08 +00:00
Spelling fixes from Chris Rebert darcs-hash:20070801173524-ac50b-760d9ddf0e68aa24cd570b542824a7f2b3248ff5.gz 2007-08-01 17:35:24 +00:00			`In order to use the exit status of multiple commands as the condition`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			of an if block, use <a href="#begin">`begin; ...; end`</a> and
			the short circuit commands <a href="commands.html#and">`and`</a>
			and <a href="commands.html#or">`or`</a>.
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00
Updates to the documentation - add a few crossreferences, remove redundant listing of builtins and update the todo list darcs-hash:20061102134725-ac50b-802d5cf8754ff94c4cc9533b2ff16a759e9aa2c9.gz 2006-11-02 13:47:25 +00:00			`The exit status of the last foreground command to exit can always be`
			`accessed using the <a href="index.html#variables-status">$status</a>`
			`variable.`

Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00			`\subsection if-example Example`

Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`\fish`
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00			`if test -f foo.txt`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`echo foo.txt exists`
Changed "elseif" to "else if" 2012-09-03 20:24:01 +00:00			`else if test -f bar.txt`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`echo bar.txt exists`
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00			`else`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`echo foo.txt and bar.txt do not exist`
Add subdirectories darcs-hash:20050920133155-ac50b-9a14c6c664dd03afbe8e15e7c7998fcfb5c3c750.gz 2005-09-20 13:31:55 +00:00			`end`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`\endfish`

			will print `foo.txt exists` if the file foo.txt
remove trialing spaces #2 2010-09-18 02:18:26 +00:00			`exists and is a regular file, otherwise it will print`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`bar.txt exists` if the file bar.txt exists
Improve documentation and error reporting for elseif. 2012-09-01 09:14:13 +00:00			`and is a regular file, otherwise it will print`
Documentation update Rework for Doxygen >1.8. Moved large parts of the documentation to a simplified format, making use of Markdown enhancements and fixing bad long options. 2014-08-01 02:37:32 +00:00			`foo.txt and bar.txt do not exist`.