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Shell Programming and Scripting
assigning a variable containing hostname
Post 65650 by muthukumar on Monday 7th of March 2005 10:54:13 PM
03-07-2005
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LEARN ABOUT OPENSOLARIS
upsc
UPSC(8) NUT Manual UPSC(8) NAME
upsc - example lightweight UPS client SYNOPSIS
upsc -l | -L [host] upsc ups [variable] upsc -c ups DESCRIPTION
upsc is provided as a quick way to poll the status of a UPS server. It can be used inside shell scripts and other programs that need UPS data but don't want to include the full interface. OPTIONS
-l host List all UPS names configured at host, one name per line. The hostname defaults to "localhost". You may optionally add a colon and a port number. -L host As above, list all UPS names configured at host, including their description provided by the remote upsd(8) from ups.conf(5). The hostname defaults to "localhost". You may optionally add a colon and a port number to override the default port. -c ups Lists each client connected on ups, one name per line. ups Display the status of that UPS. The format for this option is upsname[@hostname[:port]]. The default hostname is "localhost". variable Display the value of this variable only. By default, upsc retrieves the list of variables from the server and then displays the value for each. This may be useful in shell scripts to save an additional pipe into grep. EXAMPLES
To list all variables on an UPS named "myups" on a host called "mybox", with upsd(8) running on port 1234: $ upsc myups@mybox:1234 battery.charge: 100.0 battery.voltage: 13.9 battery.voltage.nominal: 13.6 . . . To list the UPSes configured on this system, along with their descriptions: $ upsc -L apc: Back-UPS 500 ppro2: Patriot Pro II To retrieve the status for all UPSes connected to mybox, using Bourne-shell syntax: $ for UPS in `upsc -l mybox:1234`; do upsc $UPS ups.status done To list clients connected on "myups": $ upsc -c myups 127.0.0.1 ::1 192.168.1.2 DIAGNOSTICS
upsc will either print a list of UPS names, a list of all supported variables and their values on the UPS, or an error message. If you receive an error, make sure you have specified a valid UPS on the command line, that upsd(8) is really running on the other host and that no firewalls are blocking you. HISTORY
Earlier versions of this program used the upsfetch library and UDP sockets to talk to upsd. This version of upsc uses the new upsclient library, which only talks TCP. This is why upsct no longer exists. SEE ALSO
upsd(8) INTERNET RESOURCES
The NUT (Network UPS Tools) home page: http://www.networkupstools.org/ Network UPS Tools 05/21/2012 UPSC(8)