One Day One GNU/Linux Command
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userdel - Delete a user account and related files
Summary :
The userdel command modifies the system account files, deleting all
entries that refer to login. userdel will not allow you to remove an
account if the user is currently logged in. You must kill any running
processes which belong to an account that you are deleting.
Example:
# userdel usr1 -- Remove the usr1 account entry details. Home Dir will
not be removed.
# userdel -r usr1 -- Remove the account entries, Home Dir and Mail
Spool of the usr1.
Read: man userdel
HTH :)
--
Bharathi S