On Tue, Mar 19, 2013 at 12:44 PM, Fred Smith <fredex at fcshome.stoneham.ma.us>wrote: > On Tue, Mar 19, 2013 at 11:10:07AM -0400, m.roth at 5-cent.us wrote: > > Fred Smith wrote: > > > Hi, trying to figure out how the system manages UPS connections. On > both > > > Centos 5.9 and 6.4, merely plugging in a USB UPS device causes an icon > > > to appear in the top panel, and (at least on 5.9, haven't yet tested > > > this in 6.4) when the UPS suffers a power failure the system notices > > > and after a bit does a clean shutdown. > > > > Interesting.... I haven't observed this behavior; certainly not on > > headless servers, though most are on UPSes; nor, when I had a working UPS > > for my workstation, have I seen it. Are you running gnome or KDE? > > > > > > All this without installing ANYTHING extra. > > > > > You mean, like apcupsd? > > Yes, nor "nut" either. > http://www.networkupstools.org/ [ I had to look it up ... so hopefully this will help those other curious people out there. ] > > > > > > question #1: > > > in 5.9 there are two entries in /etc/inittab, one for power fail and > > > the other for power restoration. The default setting for the powerfail > > > entry has it doing a shutdown in 2 minutes. > > <snip> > > > message (when power fails) about the line being too long. So, I created > > > a shellscript that runs both the command to tell XP to go down, > followed > > <snip> > > > When I run this script from the commandline it works just fine. but > when > > > I turn off input power to the UPS it starts the XP shutdown then > within > > > without waiting the specified length of time, initiates the shutdown > > > of Linux. Once the shutdown is done, the UPS powers off, thereby > killing > > > the not-yet-shutdown windoze box. > > > > Thinking about this as I write, I'd guess that it expects the machine > > *receiving* the shutdown to respect the five minute wait. What you might > > want to do is a sleep 300 before sending the command. > > <snip> > > just to be sure I'm clear: the shutdown command appears to be sent > to windows, as I desire. then instead of honoring the "+5" in the > local shutdown command it shuts down immediately. > > but if I just run the identical script from a commandline it does > exactly what I think it should: (1) tells windows to shut down then (2) > waits 5 mins before shutting down Linux. > > -- > ---- Fred Smith -- fredex at fcshome.stoneham.ma.us----------------------------- > "For him who is able to keep you from falling and to present you before > his > glorious presence without fault and with great joy--to the only God our > Savior > be glory, majesty, power and authority, through Jesus Christ our Lord, > before > all ages, now and forevermore! Amen." > ----------------------------- Jude 1:24,25 (niv) > ----------------------------- > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > -- ---~~.~~--- Mike // SilverTip257 //