1.12 User Information and Management - Tomato6966/Debian-Cheat-Sheet-Setup GitHub Wiki

Display the user and group ids of your current user.

id

Display the last users who have logged onto the system.

last

Show who is logged into the system.

who

Show who is logged in and what they are doing.

w

Create a group named "test".

groupadd test

Create an account named john, with a comment of "John Smith" and create the user's home directory.

useradd -c "John Smith" -m john

Delete the john account.

userdel john

Add the john account to the sales group

usermod -aG sales john