LINUX COMMAND ATLAS · COMMAND GUIDE

Linux which command

Show which executable would run when you enter a command name.

which manual

Syntax

Command form

which [-a] NAME...

4 options

Option	What it does
`-a`	Print every matching executable found in PATH.
`--read-alias`	Read aliases from standard input (in supported implementations).
`--skip-alias`	Ignore aliases (in supported implementations).
`--read-functions`	Read shell functions from standard input (in supported implementations).

2 examples

Show which executable would run when you enter a command name.

which python3

List all python3 matches in PATH.

which -a python3

which implementations differ and may not understand aliases from the current shell. In Bash, type -a is often more informative.