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Re: Look and See script

On Thu, Apr 11, 2002 at 06:53:19PM -0500, Daniel J. Rychlik wrote:
> I have a mud game that runs on a Debian's system running the 2.2 kernel.
> Occasionally the mud game crashes and stops accepting connections.  I
> have to manually log in to restart the game.  I am wandering if there is
> a way (which I am sure there is) to automatically restart the mud after
> it crashes.  Is their a way to write a script that monitors the behavior
> of the pid or some other kind of process that it runs from to check for
> either yes its running or no its not?   I have honestly looked at trying
> to find an answer for myself and my problem, but I need to be pointed in
> the right direction.  Any information would helpful.  

Merc muds come with a shell script (csh, for some reason) that is
merely a loop around the mud running, with a check for a shutdown.txt
file being created (which the mud does on, well, shutdown, as a signal
to the script) as well as cycling through log files.

I use a perl script that does much the same thing, but also kills the
MUD if it hasn't seen any log output in 3 minutes, under the assumption
that the MUD is stuck in a loop.  (Yeah, yeah, I should make it set an
alarm() and use that like a watchdog timer in the MUD itself, but I
wrote this hack years and years ago and I'm too lazy to do it the
'right' way now. :))

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