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Operating Systems OS X (Apple) Are you sure you want to quit Safari? Post 303032436 by hicksd8 on Monday 18th of March 2019 06:21:29 AM
Old 03-18-2019
I appreciate that what I pointed to is really old stuff but I do know that a top design agency which uses lots of Macs and Linux workstations has UPS's installed that, when a power outage occurs, runs the whole studio on battery backup for an hour and then lands all the boxes gracefully. Failure to land gracefully is not an option. They use Safari all the time so how does that work? The APC service runs a script to shutdown.
 
NEWAPC(8)						      Network UPS Tools (NUT)							 NEWAPC(8)

NAME
newapc - Driver for American Power Conversion Smart Protocol UPS equipment NOTE
This man page only documents the hardware-specific features of the newapc driver. For information about the core driver, see nutupsdrv(8). SUPPORTED HARDWARE
newapc should recognize all recent APC models that use a serial protocol at 2400 bps. This is primarily the Smart-UPS, Matrix-UPS and Back-UPS Pro lines. Older APC models may work better with the apcsmart driver. The driver attempts to support every bell and whistle of the APC reporting interface, whether or not this is strictly sensible. Some older hardware may only report a handful of variables. This is usually not a bug - they just don't support anything else. CABLING
This driver expects to see a 940-0024C cable or a clone by default. You can switch to the 940-0095B dual-mode cable support with the cable= definition described below. If your 940-0024C cable is broken or missing, use this diagram to build a clone: http://www.exploits.org/nut/library/cables/940-0024C.jpg EXTRA ARGUMENTS
This driver supports the following optional settings in the ups.conf(5): cable=940-0095B Configure the serial port for the APC 940-0095B dual-mode cable. sdtype=num Use shutdown type num, according to this table: 0: soft shutdown or powerdown, depending on battery status 1: soft shutdown followed by powerdown 2: instant power off 3: power off with grace period Modes 0 and 1 will power up the load when power returns. Modes 2 and 3 will keep the load turned off when the power returns. BUGS
Some older APC UPS models return bogus data in the status register during a front panel test. This is usually detected and discarded, but some other unexpected values have occasionally slipped through. AUTHOR
Nigel Metheringham <Nigel.Metheringham@Intechnology.co.uk> (drawing heavily on the apcsmart driver by Russell Kroll). SEE ALSO
The core driver: nutupsdrv(8) The apcsmart driver: apcsmart(8) Internet resources: The NUT (Network UPS Tools) home page: http://www.exploits.org/nut/ NUT mailing list archives and information: http://lists.exploits.org/ Tue Oct 22 2002 NEWAPC(8)
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