#!/bin/sh PIN=$1 VALUE=$2 PIN_FILE=/sys/class/gpio/gpio$PIN if [ -z "$PIN" -o -z "$VALUE" ]; then exit 1 fi echo $PIN >/sys/class/gpio/export if [ $(cat $PIN_FILE/direction) = "out" ]; then echo $VALUE >$PIN_FILE/value fi echo $PIN >/sys/class/gpio/unexport