How To Use Shutdown Switches:

List Of Shutdown Command Switches

No Switches	Display information about the shutdown command, same as typing “-?”
-i	Display a GUI. It must be the first switch
-l	Log off the user (This cannot be used on a remote machine: “-m” switch)
-s	Shutdown the computer
-r	Restart the computer
-a	Cancels a system shutdown already in progress
-f	Forces running applications to close without warning
-m \\computername	Instruct a remote computer to shutdown (can be used with the restart & abort switches)
-t xx	Set a given time for shutdown, in seconds
-c “comment”	Shutdown comment (maximum of 127 characters)
-d [u] [p]:xx:yy	The reason code for the shutdown: u is the user code p is a planned shutdown code xx is the major reason code (positive integer less than 256) yy is the minor reason code (positive integer less than 65536)