Jim Perrin wrote:
What I really want of course is for a visual window to popup whenever there are A/C problems, and whenever the A/C has lost power and the UPS battery is getting low.
apcupsd should already do something similar at the console. You should get a warning in your terminal windows stating that you're on battery and blah blah. You can simply modify /etc/apcupsd/apccontrol so that instead of the 'wall' it sends out, it uses gdialog or zenity, which would give you the popup window you want.
Thanks for the tip about changing apccontrol appropriately.