Power on/off your TV through your Raspberry PI

rpi-tv.sh

#!/bin/sh

CECCLIENT=$(which cec-client)

power_on () {
	echo "on 0" | $CECCLIENT -s -d 1 >/dev/null
}

power_off () {
	echo "standby 0" | $CECCLIENT -s -d 1 >/dev/null
}

is_powered_on ()
{
	echo "pow 0" | $CECCLIENT -s | grep "TV (0): power status changed from 'unknown' to 'on'" >/dev/null
}

case $1 in
	stop)
		power_off
	;;
	start)
		is_powered_on || power_on
	;;
	status)
		if is_powered_on
		then
			echo "TV is powered on"
		else
			echo "TV is powered off"
		fi
	;;
	*)
		echo "Usage: $0 start|stop|status" >&2 && exit 2
	;;
esac

exit 0