You can shutdown, restart a linux box from Terminal. You can use the following commands to do so   Open Terminal  Type in “ sudo restart ” to restart the system  Sometimes you may get the error “command restart not found” if you get this error then try the commands using  sudo /sbin/restart  or  sudo /sbin/shutdown –r now     Get more help on shutdown command using man shutdown   
Being in the industry for almost two decades, one thing that's been constant is change and my curiosity. I In this fast world of IT...being curious, learning and learning by doing is quintessential :) Here is my way of learning and sharing what I learnt!!! Author: Sirisha Reddy G V