
As you know the terminal is the power tool that every linux user may have to come in contact even once in their computer life. Here is a post about controlling and managing your system using the gnome terminal.
How to shut down the system
$shutdown -h now
The word 'now' is enough to shutdown the system at this instant itself. You must be sudo before executing this command. You can specify the time instead of the word 'now' so that the system will shut after that time limit. Other ...