My main problem is that I cannot use sudo. My root account is locked using sudo passwd -dl root.
I have two users on my machine. root and admin, admin does not have su permission. When I try to use sudo on admin user, it says that admin is not in the sudoers file.
When I try to use su while logged in admin user
su: Authentication failure
and when I try to use sudo
admin is not in the sudoers file. This incident will be reported.
can I unlock my root user back?