Upon Alarm Detection Execute Shell Command

[AnotherBrian]

I want to trigger the execution of a command (e.g., C program, shell script, etc) when motion is detected.

Is there an easy way to do this?

[Alan87i]

I did by running a script that tails the message log in ubuntu. for the monitor name and "gone into alarm"

Code: Select all

#!/bin/bash
tail -f /var/log/messages | grep --line-buffered 'frontdoor.*Gone into alarm state' | while read line; do aplay /dog1.wav; done

The only problem is the message log restarts every day so I have to tell cron to restart the script .
Many thinks to the members that helps @ at LQ.org

[MJN]

IThe only problem is the message log restarts every day so I have to tell cron to restart the script .

Check out the man page for your version of tail. There are --retry and --follow-name options which allow you to cater for the logfile rotation.

Mathew