UPS options for Linux on a PPC

[John Reinke <ufotofu@southwind.net>]

I was wondering what UPS (Uninterruptable Power Supply) systems everyone
has had luck with. I'm interested in one that commnicates with the computer
to tell it to shutdown when the battery gets low. Ultimately, I'd like it
to communicate with both Linux AND MacOS. Brands and model numbers would be
especially helpful.

Thanks for any suggestions,
john