Published Sep 20 2020
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While you’re logged in to the terminal shell with one user, you might have the need to switch to another user.
For example you’re logged in as root to perform some maintenance, but then you want to switch to a user account.
You can do so with the
If you’re logged in as a user, running
su without anything else will prompt to enter the
root user password, as that’s the default behavior.
su will start a new shell as another user.
When you’re done, typing
exit in the shell will close that shell, and will return back to the current user’s shell.
sucommand works on Linux. On macOS it will not work unless you enable the root user (tip: you can use
I wrote an entire book on this topic 👇