mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-23 23:48:05 +08:00
02d82dcf85
Adds synopses for those commands missing them. Moves all synopsis sections to code blocks. This improves the appearance, although highlighting as fish code may not be the ideal appearance.
35 lines
967 B
ReStructuredText
35 lines
967 B
ReStructuredText
.. _cmd-and:
|
|
|
|
and - conditionally execute a command
|
|
=====================================
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
::
|
|
|
|
COMMAND1; and COMMAND2
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
``and`` is used to execute a command if the previous command was successful (returned a status of 0).
|
|
|
|
``and`` statements may be used as part of the condition in an :ref:`while <cmd-while>` or :ref:`if <cmd-if>` block.
|
|
|
|
``and`` does not change the current exit status itself, but the command it runs most likely will. The exit status of the last foreground command to exit can always be accessed using the `$status <index.html#variables-status>`__ variable.
|
|
|
|
Example
|
|
-------
|
|
|
|
The following code runs the ``make`` command to build a program. If the build succeeds, ``make``'s exit status is 0, and the program is installed. If either step fails, the exit status is 1, and ``make clean`` is run, which removes the files created by the build process.
|
|
|
|
|
|
|
|
::
|
|
|
|
make; and make install; or make clean
|
|
|
|
|