NAME
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.