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WHICH(1) FreeBSD General Commands Manual WHICH(1)
NAME
which - locate a program file in the user's path
SYNOPSIS
which [-as] program ...
DESCRIPTION
The which utility takes a list of command names and searches the path for
each executable file that would be run had these commands actually been
invoked.
The following options are available:
-a List all instances of executables found (instead of just the
first one of each).
-s No output, just return 0 if all of the executables are found, or
1 if some were not found.
Some shells may provide a builtin which command which is similar or
identical to this utility. Consult the builtin(1) manual page.
EXAMPLES
Locate the ls(1) and cp(1) commands:
$ /usr/bin/which ls cp
/bin/ls
/bin/cp
Same as above with a specific PATH and showing all occurrences:
$ PATH=/bin:/rescue /usr/bin/which -a ls cp
/bin/ls
/rescue/ls
/bin/cp
/rescue/cp
which will show duplicates if the same executable is found more than
once:
$ PATH=/bin:/bin /usr/bin/which -a ls
/bin/ls
/bin/ls
Do not show output. Just exit with an appropriate return code:
$ /usr/bin/which -s ls cp
$ echo $?
0
$ /usr/bin/which -s fakecommand
$ echo $?
1
SEE ALSO
builtin(1), csh(1), find(1), locate(1), whereis(1)
FreeBSD 14.0-RELEASE-p6 September 24, 2020 FreeBSD 14.0-RELEASE-p6