which

locate a program file (UNIX)

Syntax:

which [-aflL] program...

Options:

-a

Find all occurrences of program in PATH.

-f

Display the full QNX pathname.

-l

("el") Display long format (as in ls -lL) for each program found.

-L

Display long format (as in ls -l) for each program found, displaying link information if the file is a symlink.

Examples:

Display full pathname (includes node) and long status for all versions of the ls utility found in PATH:

    which -alf ls

Display pathname for the which utility:

    which which

Description:

The which utility searches the filesystem for each program specified. The user's current PATH environment variable is used as the search path.

Exit status:

0

All input files were searched successfully.

>0

An error occurred.

Environment variables:

PATH

A colon-separated list of directories to search for QNX executables.

See also:

• sh utility (whence built-in command)