The Windows XP system completes the shutdown operation through a program named Shutdown.exe (location in Windows / System), in general, the shutdown of XP is implemented by shutdown program shutdown.exe, when shutdown, call Shutdown.exe. It can be seen that it is to prevent the forced shutdown to cancel the call to shutdown.exe.
Shutdown.exe -a cancellation shutdown.exe -f forcibly shut down the application. Shutdown.exe -m // Computer Name Controls Remote Computers. Shutdown.exe -i shows the graphical user interface, but must be the first parameter of Shutdown. Shutdown.exe -l logs out of the current user. Shutdown.exe -r shuts down and restarts. Shutdown.exe -t Time Sets the shutdown countdown. Shutdown.exe -c "Message Content" Enter the message content in the shutdown dialog (not over 127 characters). For example, your computer should be shut down at 23:00, you can choose "Start → Run", enter "AT 23:00 Shutdown -s", which, to 23 points, the computer will appear "System Shutdown" dialog, the default is 30 The second countdown and prompts you to save your job. If you want to shut down in a countdown, you can enter "shutdown.exe -t 3600", which is 60 minutes after 60 minutes, "3600" represents 60 minutes. If you want to cancel, you can enter "Shutdown -a" in the run. In addition, enter "shutdown -i", you can open the Setup Auto Shutdown dialog and set the Auto Shutdown.