Network Management

Ubuntu relies heavily on the sudo command for administration tasks. However, sudo and superuser modes are not identical and whether you want to change the root password for comfort, necessity, or security purposes, the process is simple:

$ sudo passwd
Enter new UNIX password:
Retype new UNIX password:
passwd: password updated successfully

Now you can use the su command.

# sudo apt-get update
# sudo apt-get install ubuntu-desktop

Reboot and the GUI will start automatically.