| Description | Command |
|---|---|
| Add a group | groupadd groupname |
| Add a user | adduser peter |
| Add a user | useradd -c “Peter Roux” - g admin -m peter # Add user peter |
| Delete a user | userdel peter |
| Display information on a user | finger user |
| Display who is logged in | w |
| Display who you are logged in as | whoami |
| Modify user information | usermod peter |
| Show the active user id with login and group | id |
| Show last logins on the system | last |
| Show who is logged into the system | who |