How to Change the Computer Name for Ubuntu.

Say you don't like the name chosen for your computer or you want to change it from time to time for security reasons..

• Open a terminal window and input the following command: 
• gksudo gedit /etc/hostname. Hit 
• enter When prompted, enter the administrator password and click the 
• OK button. The hostname file will open, displaying the current computer name. Replace the current computer name with the desired new name. Now click 
• Save. Close all open windows and 
• restart your system. After your system has restarted, it will have the new computer name.