Starting XBMC on hdmi access

[Fred]

Okay I have build this script now as a work around. This script runs forever and should start XBMC on hdmi access and shut it down when the channel is changed away from the hdmi again. The code is below and this code doesn't start or stop anything yet but just prints stuff for debugging.

I would like to get some advice on this, maybe you know a better solution.

Code:

#!/bin/bash
while true

do

cec_client=`cec-client -m | egrep -m 1 '0f:86:30:00|0f:80:00:00:30:00|0f:80:30:00:00:00'`

echo "${cec_client}"

if (( `echo $cec_client | grep -c "0f:86:30:00|0f:80:00:00:30:00"` > 0 ));then
    echo "turning on and waiting"
    sleep 60
    echo "waiting over, restarting"
elif (( `echo $cec_client | grep -c "0f:80:30:00:00:00"` > 0 ));then
    echo "turning off and waiting"
    sleep 60
    echo "waiting over, restarting"
else
    echo "error, restarting" #this is true when there is a segmentation fault
fi

done

I would also like to extend it with option to wait an x amount of time before shutting down, if hdmi is accessed within that time cancel shutdown. But for this I should be able to do actions while cec-client is still running, I don't know how to do that.