How to Find Where a Command Is Installed in Linux (which)

which shows the full path to the executable that would run when you type a given command name.

Key points

• Useful for confirming exactly which version of a tool (e.g. python or node) is actually on your PATH
• Returns nothing (or an error) if the command isn't found anywhere in your PATH
• type is a similar, shell-builtin alternative that also reports aliases and shell functions, not just executables

Example

which node