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Shutdown Lock Restart Windows XP Command

These commands can be used either from the Windows XP Command Prompt or in a bat command file

To Shutdown your Computer
shutdown -s

To Shutdown and Restart your Computer
shutdown -r

To Shutdown or Restart but delay the command
use the -t nnn minutes option"where nnn is the time in minutes
e.g shutdown -r -t 60
This will restart your computer in 60 minutes

To Lock your computer
Rundll32.exe User32.dll,LockWorkStation    IP