The correct list for this is sort of fuzzy...

I'd like to set up NetBSD to automatically shut down my UPS during a power
failure... monitoring the UPS is not a problem, but I need to send an
ioctl to the serial port to tell the UPS to shut off power to the computer
after NetBSD has shut down completely.

What's the best way to implement this?  

--
Dan J. Fraser -- dfraser@mother.com 
http://www.mother.com/~dfraser/      
IRC Nick: Optic   Finger me for PGP public key 
Anytime things appear to be going better, you've overlooked something.