OLD=`cat /sys/class/leds/beagleboard\:\:usr0/trigger`
echo “Valor atual: $OLD”
echo “none” > /sys/class/leds/beagleboard\:\:usr0/trigger
while :;
do
echo 0 > /sys/class/leds/beagleboard\:\:usr0/brightness
sleep 1
echo 1 > /sys/class/leds/beagleboard\:\:usr0/brightness
sleep 1
done