How to login as root in Ubuntu

Ubuntu provides 'sudo' command (Just add the 'sudo' term in the beginning of the command, that you want to execute), that allows the normal users to perform administrative tasks. But sometimes it's good to have full root power!

Enable (Unlock) root on Ubuntu

#1 : Open Terminal/shell
#2 : Then, Type the command (Followed by your Login Password).

 
sudo passwd root

#3 : when you will be prompted for "Enter the New Unix Password" Twice, Enter the root password.
#4 : You are done !

Note:
In root mode, do not perform any action which you aren not sure.
It might damage your system.