I want to add the users that I created in the sudoers file?

[Imesmi]

I want to add the users of the linux in the sudoers file but I have a problem i don't know which is the root password :( :( . Can someone please ,please help me .
How can i find out the root password because I can't connect to the internet and i really need to connect to the net .

[sisco311]

The root account password is locked by default. The first user created during the installation is allowed to run any command as root. See: community/RootSudo

If you want to allow another user to use sudo, simply add it to the admin group:

sudo gpasswd -a username admin
where username is the login name of the user.