mirror of
https://github.com/fish-shell/fish-shell
synced 2024-11-13 00:17:25 +00:00
38 lines
650 B
ReStructuredText
38 lines
650 B
ReStructuredText
.. _cmd-not:
|
|
|
|
not - negate the exit status of a job
|
|
=====================================
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
.. synopsis::
|
|
|
|
not COMMAND [OPTIONS ...]
|
|
! COMMAND [OPTIONS ...]
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
``not`` negates the exit status of another command. If the exit status is zero, ``not`` returns 1. Otherwise, ``not`` returns 0.
|
|
|
|
Some other shells only support the ``!`` alias.
|
|
|
|
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
|
|
|
|
|