Command execution when HDMI or composite is detected

[matchaman]

I have two script files, called hdmi and rca. They're basically doing a dirty job for preparing my setup for HDMI and composite (CRT TV).

./hdmidoes the following:

#!/bin/bash
mv /opt/retropie/configs/all/{videomodes.cfg,videomodes1.cfg}
mv /opt/retropie/configs/all/retroarch/shaders/shaders/{crt-pi1.glsl,crt-pi.glsl}

And ./rca is this:

#!/bin/bash
mv /opt/retropie/configs/all/{videomodes1.cfg,videomodes.cfg}
mv /opt/retropie/configs/all/retroarch/shaders/shaders/{crt-pi.glsl,crt-pi1.glsl}

Videomodes.cfg contains 240p signal settings which is a no-no for HDTVs while renaming crt-pi results in easily switching on/off my default shader that looks terrible on a CRT TV.

I'm pretty happy with those but I have to run each script everytime I switch cables. Any solution for them to be executed on boot when each output is detected? Thanks in advance.

[mitu]

@matchaman Have you tried playing with the tvservice command to check if the HDMI is connected ? You could run the hdmi script if the HDMI is on, or the rca script otherwise.

$ tvservice -s
[HDMI CEA (16) RGB lim 16:9], 1920x1080 @ 60.00Hz, progressive

[matchaman]

Thanks :)

It seems that tvservice -s outputs the info to egrep so I simply addedthe following lines to rc.local before exit 0

if (/usr/bin/tvservice -s | /bin/egrep 'HDMI|DVI') ; then
/home/pi/hdmi
else
/home/pi/rca
fi

Simple and neat!