A shell script for LibreELEC to automatically stop Kodi playback when the HDMI monitor is disconnected / turned off

monitor-check.sh

#!/bin/sh

# Usage:
# 1. Save the script to /storage/monitor-check.sh
# 2. Execute: chmod +x /storage/monitor-check.sh
# 3. Execute: crontab -e and put in this line (runs this script once a minute):
#    * * * * * /storage/monitor-check.sh
# 4. Execute: systemctl restart cron
# 5. Make sure that the cron job is working by checking the journal (journalctl  -xe -u cron)

if [ $(cat /sys/class/drm/card0-HDMI-A-1/status 2>/dev/null) = "disconnected" ]; then
        kodi-send --action stop
fi