In this guide, I will show you how to manage your users on Ubuntu via command line.
Most of these commands assume you are root so no need to use sudo.
1. How to list all local users on Ubuntu?
cut -d: -f1 /etc/passwd
2. To add a user on Ubuntu
adduser username
3. To delete a user on Ubuntu
userdel username
4. Remove user home folder on Ubuntu
rm -fr /home/username
5. To modify the username of a user on Ubuntu
usermod -l new_username old_username
6. To change the password of a user
passwd username
7. To change the shell of a user
chsh username
8. To add a user to the sudo group
usermod -aG sudo username