$ su - Password: #
# userdel -r username
The –r option removes the account from the system.
The preferred method for removing a local home directory for a deleted user is to specify the –r option with the userdel command. This method is preferred because user home directories are now ZFS datasets.
# userdel username
For a full list of command options, see the userdel(1M) man page.
Next Steps
Additional cleanup might be required if the user that you deleted had administrative responsibilities, for example creating cron jobs, or if the user had additional accounts in non-global zones.