WHICH (1) | General commands | Unix Manual Pages | :man▋
which - "locate a program file in the users path"
which [-as] program ...
The which utility takes a list of command names and searches the path for each executable file that would be run had these commands actually been invoked.
The following options are available:
|-a || List all instances of executables found (instead of just the first one of each). |
|-s || No output, just return 0 if any of the executables are found, or 1 if none are found. |
Some shells may provide a builtin which command which is similar or identical to this utility. Consult the builtin(1) manual page.
builtin(1), csh(1), find(1), locate(1), whereis(1)