--- /dev/null
+#!/bin/bash
+
+if [ "`id -u`" != "0" ]; then
+ exec sudo "${0}"
+fi
+
+if [ ! -d "/sys/class/gpio/gpio18" ]; then
+ echo 18 >/sys/class/gpio/export
+fi
+
+echo out >/sys/class/gpio/gpio18/direction
+echo 0 >/sys/class/gpio/gpio18/value
+sleep 0.2
+echo 1 >/sys/class/gpio/gpio18/value
+sleep 2