#!/bin/bash
TMPDIR=/tmp
wget -q http://checkip.dyndns.org/index.html --output-document=/tmp/new.ip
 if [ "`cat /tmp/new.ip`" = "`cat /tmp/old.ip`" ]
 then echo "No new IP" > /dev/null ;
 else wget -q http://''fenn'':''password''@members.dyndns.org/nic/update?hostname=''fenn''.dyndns.org --output-document=/tmp/upd.ip
 echo "New IP";
 cat /tmp/upd.ip;
 rm /tmp/upd.ip;
 fi
 rm -f /tmp/old.ip
 mv /tmp/new.ip /tmp/old.ip