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which(1) [netbsd man page]

WHICH(1)						    BSD General Commands Manual 						  WHICH(1)

which -- locate a program file in the users $PATH environment variable SYNOPSIS
which [-a] name [...] DESCRIPTION
which takes a list of names and looks for the files which would be executed had these names been given as commands. Each argument is searched for along the user's PATH. If the -a flag is given, which will continue to search the PATH until all instances of a program file are found. HISTORY
The which command appeared in 3.0BSD. BUGS
This implementation does not expand csh(1) aliases, and is shell agnostic. This is really a feature. BSD
April 23, 1991 BSD

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WHICH(1)						    BSD General Commands Manual 						  WHICH(1)

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. SEE ALSO
builtin(1), csh(1), find(1), locate(1), whereis(1) HISTORY
The which command first appeared in FreeBSD 2.1. AUTHORS
The which utility was originally written in Perl and was contributed by Wolfram Schneider <>. The current version of which was rewritten in C by Daniel Papasian <>. BSD
December 13, 2006 BSD
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