are you referring to a hosted game? or the actual physical computer? and if the later- is it local (at home, at work, etc.), or remote (elsewhere in the state, country, region, etc., where you cannot visit it personally)?
ah well then usually you can't, atleast not without admin/root privileges. if you need to do a physical reboot of the machine, you will probably need to ask the system administrator of that computer or service to do that for you. if you need to stop/restart a game usually you can do this sequence of events from the shell account you used to start the game:
ps aux | grep [put game name here] (you can leave out the .dmb part of the game name)
the above will give you some gobbledegook like this:
the second number is what you are looking for, in the above example i'm talking about the 1363. this is the game's process id (pid).
so now that you know the pid of the game, you can kill it off with:
kill -15 1363 <-- 'terminates' the game pid 1363
you could also use -9 instead of -15 -- people tend to use one or the other for various reasons, though the end result is basically the same (ie: the game stops).
hope this is what you were asking for- if not, try again!
you could also use -9 instead of -15 -- people tend to use one or the other for various reasons, though the end result is basically the same (ie: the game stops).
Also, I believe you can do a kill -10 to have DreamDaemon reboot the world.