3.4.5. Deleting Users
If you want to remove a user account from the system, use the
userdelcommand on the command line as
-roption removes files in the user's home directory along with the home directory itself and the user's mail spool. Files located in other file systems have to be searched for and deleted manually.
userdel -r username
-roption is relatively safer, and thus recommended, compared to
-fwhich forces the removal of the user account even if the user is still logged in.