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Man Page Minute - which

WHICH(1) WHICH(1)

NAME
which - locate a command

SYNOPSIS
which [-a] filename …

DESCRIPTION
which returns the pathnames of the files which would be executed in the
current environment, had its arguments been given as commands in a
strictly POSIX-conformant shell. It does this by searching the PATH
for executable files matching the names of the arguments.

OPTIONS
-a print all matching pathnames of each argument

EXIT STATUS
0 if all specified commands are found and executable

1 if one or more specified commands is nonexistent or not exe
cutable

2 if an invalid option is specified

Debian 12 Jul 2004 WHICH(1)