Shutdown Tricks

In Windows,You can shut down your system just by writing a command in run dialog box or at command prompt.You can create your own short cut which on clicking shuts down the system.
All you need to do is... right-click on an empty Desktop spot -> select New -> Shortcut -> type shutdown followed by a space, and then enter one or more of the parameters listed below -> click Next -> type a suggestive name for your new shortcut -> finally, click Finish.
This is the Shutdown.exe (located in %systemroot%\System32, usually C:\Windows\System32) syntax:
shutdown [-l/-s/-r/-a] [-f] [-m \\computername] [-t xx] [-c "Text"] [-d[u][p]:xx:yy]
Valid command line switches:
-a = Abort system shutdown in progress ONLY IF the -t xx timeout option was already set to ANY value other than 0. ALL switches except -l and -m are ignored during abort.
-c "Text" = Text comment (case insensitive) to be displayed in the Message area of the System Shutdown window. MUST be enclosed between quotes. Maximum allowed 127 ASCII characters.
-d [u][p]:xx:yy = Reason code for shutdown:u = User code.p = Planned shutdown code.xx = Major reason code. Positive integer number less than 256.yy = Minor reason code. Positive integer number less than 65536.
-f = Force running applications to close without warning.
-i = Display the shutdown interface (GUI). MUST be the first option!
-l = Log off the current user of the local computer (default action). Can NOT be used with the -m option unless the current user has Sysadmin rights, in which case the -m switch takes precedence.
-m \\computername = Remote/network computer name (most always case sensitive) to log off/restart/shut down. Current user MUST have Sysadmin rights to be allowed to use this switch!
-s = Shut down the local computer.
-r = Shut down and restart (reboot) the local computer.
-t xx = Set shutdown timer to timeout for xx seconds. IF NOT specified defaults to 20 seconds. Allowed values between 0 and 99 seconds. The -a switch is the ONLY one that CAN be used during the timeout period.
For example:
shutdown -s -c "Shutting down!" -t 3
tells your computer to shutdown after waiting for 3 seconds while the System Shutdown window will display text above in the Message area.