Nut upsuser - Jul 2010 - I am a bit confused

I have read the shutdown.txt in the docs directory.  It says that after 
upsmon calls the shutdown command init takes over.  This I understand 
clearly.  However, step 8.

8. init then runs your shutdown script.  This checks for the
   POWERDOWNFLAG, finds it, and tells the UPS driver(s) to power off
   the load.

Since init is shuting down the system, why is the POWERDOWNFLAG needed? 
Why do I need a shutdown script?  init is shuting down everything!

Durwin F. De La Rue
Management Sciences, Inc.
6022 Constitution Ave. NE
Albuquerque, NM  87110
Phone (505) 255-8611

Citeren durwin op mgtsciences.com:
> I have read the shutdown.txt in the docs directory.  It says that after
> upsmon calls the shutdown command init takes over.  This I understand
> clearly.  However, step 8.
>
> 8. init then runs your shutdown script.  This checks for the
>    POWERDOWNFLAG, finds it, and tells the UPS driver(s) to power off
>    the load.
>
> Since init is shuting down the system, why is the POWERDOWNFLAG needed?
> Why do I need a shutdown script?  init is shuting down everything!
Not at all. There is a difference between shutting down the system  
when 'upsmon' has found that the UPS battery is empty and a shutdown  
commanded by an operator. In the first case, the UPS should power off  
(and restart when the power comes back, if possible) in the second  
case the UPS should not be powered off. Other than the POWERDOWNFLAG  
there is no way to tell what has happened.

Best regards, Arjen
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