OpenDarwin 7.2.1 - man page for which (opendarwin section 1)

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

NAME
     which -- locate a program file in the user's path

SYNOPSIS
     which [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 expanded if it is aliased, and searched for along
     the user's path.  Both aliases and path are taken from the user's .cshrc file.

FILES
     ~/.cshrc  source of aliases and path values

DIAGNOSTICS
     A diagnostic is given for names which are aliased to more than a single word, or if an exe-
     cutable file with the argument name was not found in the path.

BUGS
     Must be executed by a csh(1), or some other shell which knows about aliases.

HISTORY
     The which command appeared in 3.0BSD.

3rd Berkeley Distribution		  April 23, 1991		3rd Berkeley Distribution