From: Erik Proper (erikp@cs.kun.nl)
Date: 03/21/93 

From: erikp@cs.kun.nl (Erik Proper)
Subject: Re: Notebooks, and powermgt, and ...
Date: Sun, 21 Mar 1993 21:38:12 GMT

Hi all,
   at the moment I am able to detect when my PC is running low on
   energy. About 20 minutes before dying out, it gives a first alarm
   by flipping a bit on an IO port. Shortly before really dying out, it
   flips another bit.

   When the first bit flips, I want to send a message to all tty's
   running at that moment..... but how should this be done (reboot seems
   to do something like that, but I don't have its source).

   Erik