======How To Shutdown Ubuntu Server from SSH======

The proper way to shutdown is to use the shutdown command.

For Example:
<code>sudo shutdown -P now</code>


shutdown [OPTION]... TIME [MESSAGE]

-h Requests that the system be either halted or powered off after it has been brought down, with the choice as to which left up to the system.
 
-H Requests that the system be halted after it has been brought down. 

-P Requests that the system be powered off after it has been brought down.