On Sun, Aug 18, 2024 at 07:00:52AM -0500, Dale wrote

Walter Dnes wrote:

My current manual hibernation script is...

#!/bin/bash
sync
sudo /usr/sbin/hibernate

The one thing I wish I could figure out how to set up, once power
is lost, wait 2 minutes, maybe 5 minutes, then power off even if
the battery still has lots of power left.

I asked Mr. Google. APCUPSD has an ONBATTERDELAY command that does
something only if the battery is in use (i.e. AC power is off) for at
least a certain specified length of time..

P. S.� Your little script looks like something I'd come up with.� Simple
but works.� ;-)� LOL�

The solution for NUT appears to be to launch a countdown script rather
than do an immediate kill. The examples I saw were exceedingly complex, designed to handle all sorts of outlier cases. Here's the barebones
simplest I think you can get away with. It launches as soon as
ONBATTERY is detected. It has a main loop that runs up to 60 seconds
(i.e. "sleep 1" x 60). If it falls through the bottom of the loop
(counter = 0), it executes a "hibernate" (or "shutdown" if you prefer).
If if detects battery not in use (i.e. AC power back on) before
60 seconds, it'll exit entirely. ***WARNING*** I HAVE NOT TESTED THIS
CODE. I don't have a machine with a UPS running NUT

###################################################

in /etc/nut/upsmon.conf on client change to this

NOTIFYCMD "/etc/nut/countdown"
NOTIFYFLAG ONBATT EXEC

/etc/nut/countdown looks like so (counter = 60 ==> 60 seconds)

###################################################

#!/bin/bash
counter=60

while [ ${counter} -gt 0 ]
do
output=$(upsc [email protected] ups.status)
if echo "$output" | grep -q "OB"
then
sleep 1
counter--
else
exit
fi
done
/usr/sbin/hibernate

###################################################

NOTES:
* status output may change between versions
* adjust IP address as appropriate for your system
* make sure to mark the script executable
* you may have to set up and invoke sudo for "hibernate"
or "shutdown" if the NUT daemon is not root

--
There are 2 types of people
1) Those who can extrapolate from incomplete data

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On Sun, Aug 18, 2024 at 04:06:41PM -0500, Dale wrote

I think I get what your script does.� When Nut sees onbatt then it
executes your script because of the NOTIFYCMD option.� The script then
waits 60 seconds then executes what is under 'done'.

Could one change the 60 seconds to say 300 seconds?

At the top of the script is the line "counter=60". Change that to "counter=300". The script does a "sleep 1" (1 second delay) each pass
through the "while" loop. Note that it also checks...

if echo "$output" | grep -q "OB"

...on each pass through the loop. ***IF AC POWER IS RESTORED BEFORE THE COUNTDOWN FINISHES*** the battery is no longer in use and the "if"
returns false. It then executes the "else" portion of the loop on that
pass and exits the script without taking any action. I don't want to
hibernate or shutdown for a short 5-second power blip.

--
There are 2 types of people
1) Those who can extrapolate from incomplete data

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