fish-shell/doc_src/and.txt

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\section and and - conditionally execute a command
\subsection and-synopsis Synopsis
2014-08-01 20:25:41 +08:00
\fish{synopsis}
COMMAND1; and COMMAND2
\endfish
\subsection and-description Description
`and` is used to execute a command if the current exit status (as set by the last previous command) is 0.
`and` 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 and-example 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.
\fish
make; and make install; or make clean
\endfish