Maybe this command is useful for whom made some program that shuts down, reboot, hibernate, log off, and/or locking the computer in Windows XP by executing it from Windows XP command prompt or ‘console’.

Shutdown:

%windir%\System32\shutdown -s

Reboot:

%windir%\System32\shutdown -r

Log Off:

%windir%\System32\shutdown -l (lowercase L)

Hibernate (only if hibernate feature is enabled in Power Management)

%windir%\system32\rundll32.exe powrprof.dll,SetSuspendState Hibernate

Lock Computer (go to Login Screen without logging off current user)

%windir%\System32\rundll32.exe user32.dll,LockWorkStation

shutdown command’s parameter can be combined with other parameters such as -f (force running application to close withour warning), or -t (time in seconds before shutdown occured). Complete shutdown command parameter can be viewed by typing shutdown whithout any parameters or with shutdown -? from Windows XP command prompt.