====== UPS on Linux ======
http://www.die.net/doc/linux/man/man8/genericups.8.html

====== UPS on FreeBSD ======
http://tedslin.blogspot.com/2006/07/blog-post.html

http://mail.lsps.tp.edu.tw/%7Egsyan/freebsd2001/ups.html

http://mcwu.net/blog/2004/09/33/

https://www.daemon-land.idv.tw/phpBB2/viewtopic.php?p=238

====== Network UPS Tools (NUT) ======
http://eu1.networkupstools.org/