Boa noite, ocorrendo erro na tentativa de exclusão da usuária criada:
userdel -r leticiaalbuquerque
userdel: user 'leticiaalbuquerque' does not exist
luiz@lenovo-dev:$ userdel -r leticia
userdel: Permission denied.
userdel: cannot lock /etc/passwd; try again later.
luiz@lenovo-dev:$ userdel -r leticiaalbuquerque@localhost
userdel: user 'leticiaalbuquerque@localhost' does not exist
luiz@lenovo-dev:~$