Linux is a very secure system… Almost everything that involves changes will need you to be a root user.
If you do not escalate yourself to be root user you will see this error:
[cyrus@cyruslab ~]$ sudo minicom
[sudo] password for cyrus:
cyrus is not in the sudoers file. This incident will be reported.
An email will be sent to the admin…;) cool eh?
Add my account into sudoers to enjoy the same privilege as root user
[root@cyruslab ~]# gedit /etc/sudoers
gedit is a gui text editor, some people use vi which is a text-based text editor, vi is very difficult to use!!