title: Creating another user account having power of root
body: <p>How to create another root account with other name on a Linux system(in my case Ubuntu 13.04).
  If i create a ordinary user account and set its UID to 0 in /etc/passwd then it will conflict with root(also has uid 0).so i gave him gid=0(group of root). but didn't worked.
  please provid any effective solution.i've also added this user in sudoers file.</p>