Changes Done in UBUNTU 12.04 64-bit : Post Installation 1. Access To Root: eagroup@BI-Lab:~$ sudo su [sudo] password for eagroup: root@BI-Lab:/home/eagroup# sudo passwd Enter new UNIX password: password Retype new UNIX password: password passwd: password updated successfully root@BI-Lab:/home/eagroup# 2. Add and manage users and groups: a. Add user from GUI - hduser, Username Password Privilage root password root eagroup password admin hduser hduser hadoop user 3. Making hduser sudoer: a. login as root ...