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. > > > 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) -----------------------------