mirror of
https://github.com/fish-shell/fish-shell.git
synced 2024-11-23 23:38:31 +08:00
24 lines
985 B
Plaintext
24 lines
985 B
Plaintext
\section or or - conditionally execute a command
|
|
|
|
\subsection or-synopsis Synopsis
|
|
\fish{synopsis}
|
|
COMMAND1; or COMMAND2
|
|
\endfish
|
|
|
|
\subsection or-description Description
|
|
|
|
`or` is used to execute a command if the current exit status (as set by the previous command) is not 0.
|
|
|
|
`or` statements may be used as part of the condition in an <a href="#if">`and`</a> or <a href="#while">`while`</a> block. See the documentation
|
|
for <a href="#if">`if`</a> and <a href="#while">`while`</a> for examples.
|
|
|
|
`or` does not change the current exit status. 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 or-example Example
|
|
|
|
The following code runs the `make` command to build a program. If the build succeeds, the program is installed. If either step fails, `make clean` is run, which removes the files created by the build process.
|
|
|
|
\fish
|
|
make; and make install; or make clean
|
|
\endfish
|