#!/bin/bash
# author: makefu
# fetch the status from the website
CURR=` wget "http://shackspace.de/sopen.gif" -O - 2>/dev/null | md5sum | awk '{print $1}'`
# reference md5sum of a green 1x1 pixel
REF="d8ced8c4a470ea0098a2b0d7b19c06b2" 
[ "$CURR" == "$REF" ] && echo -e "shack is \e[1;32mOPEN\e[0m" && exit 0
[ "$CURR" != "$REF" ] && echo -e "shack is \e[1;31mCLOSED\e[0m" && exit 1