April 23, 1991 WHICH 1

### 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.