To avoid typing sudo for any admin command, you can have a root shell with sudo -s:
[05:24 27] xoa@xoa:~$ sudo -s
We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:
#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.
[sudo] password for xoa:
[05:24 27] xoa:xoa$