Great info here
Change root password:
passwd
groupadd groupname
sudo adduser username
sudo adduser username groupname
open the sudoers file containing a list of users and groups who have root privileges:
nano /etc/sudoers
Great info here
Change root password:
passwd
groupadd groupname
sudo adduser username
sudo adduser username groupname
open the sudoers file containing a list of users and groups who have root privileges:
nano /etc/sudoers