Ubuntu Delete remove a user

Ubuntu: Delete (remove) a user on Linux Ubuntu server. Before starting to this tutorial, you should be on root user first. Now do the following command:

userdel demo

Or if you want to remove the user files then use command:

userdel -r demo

If the user has root privileges, you may wish to remove it.

visudo

Find the following code

# User privilege specification
root ALL=(ALL:ALL) ALL
demo ALL=(ALL:ALL) ALL

Remove the 3rd line. You should see only root:

# User privilege specification
root ALL=(ALL:ALL) ALL

Save the changes by pressing ctrl+o and exit ctrl+x