Required. This must be above any AT lines. This script is started to invoke commands when your timers are triggered. It receives a single argument which is the name of the timer that caused it to trigger.
This sets the file name of the FIFO that will pass communications between processes to start and stop timers. This should be set to some path where normal users can't create the file, due to the possibility of symlinking and other evil.
NOTE: if you are running Solaris or similar, the permissions that upssched sets on this file are not enough to keep you safe. If your OS ignores the permissions on a FIFO, then you MUST put this in a protected directory!
Another thing to think about: upsmon doesn't run the NOTIFYCMD as root unless you run it with -p. So, upssched will probably run as nobody or similar unless you give upsmon another user with -u. Either way, you have to set PIPEFN to something that ONLY the resulting upsmon user can access.
The stock version of this file ships with PIPEFN disabled to make you visit this portion of the documentation and think about how your system works before potentially opening a hole.
AT notifytype upsname command
This will perform the command command when the notifytype and upsname match the current activity. Possible values for command are:
START-TIMER timername interval
will pass the argument timername as an argument to your CMDSCRIPT.
gone for 10 seconds AT COMMBAD * START-TIMER upsgone 10
stop the timer before it triggers AT COMMOK myups@localhost CANCEL-TIMER upsgone
The NUT (Network UPS Tools) home page: http://www.exploits.org/nut/