fish-shell/doc_src/cmds/not.rst
David Adam 3a23fdf359 docs: omnibus cleanup
Includes harmonizing the display of options and arguments, standardising
terminology, using the envvar directive more broadly, adding help options to all
commands that support them, simplifying some language, and tidying up multiple
formatting issues.

string documentation is not changed.
2022-03-12 00:21:13 +08:00

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.. _cmd-not:
not - negate the exit status of a job
=====================================
Synopsis
--------
.. synopsis::
not COMMAND [OPTIONS ...]
Description
-----------
``not`` negates the exit status of another command. If the exit status is zero, ``not`` returns 1. Otherwise, ``not`` returns 0.
The **-h** or **--help** option displays help about using this command.
Example
-------
The following code reports an error and exits if no file named spoon can be found.
::
if not test -f spoon
echo There is no spoon
exit 1
end