Controlling the systems LEDs

Blink the green LED:

root@dss11:~# echo timer > /sys/class/leds/green/trigger 
root@dss11:~# echo 10 > /sys/class/leds/green/delay_on 
root@dss11:~# echo 2000 > /sys/class/leds/green/delay_off

Manual control:

echo 255 > /sys/class/leds/blue/brightness
echo 0 > /sys/class/leds/blue/brightness