วิธีเป็น superuser in Linux

Ref –> Linux Login as Superuser (root user)

How to become superuser in Linux

Let us see some examples of the su and sudo command to become superuser in Linux.

Become a superuser in Linux using sudo command
You must be part of special secondary group on Linux:

sudo group on a Debian or Ubuntu Linux

wheel group on a CentOS/RHEL/Fedora/Oracle Linux

 
You can see your secondary group membership by running either groups command or id command
$ groups
$ id

Next run the following command to become a root/super user:
$ sudo -i
When promoted type your password to gain root shell
and when need to logout use
$ exit