IpChecker Daemon

#!/bin/bash

function child()
{
while true; do
        filename='currentip.txt'
        oldIp=`cat $filename`
        currentIp=`curl http://bot.whatismyipaddress.com/`
        if [ $oldIp != $currentIp ]
        then
                echo "$(date)\tIp address has changed, sending mail. (Old: $oldIp | New: $currentIp)" >> mailerlog.log
                php sendMailTest.php $currentIp
                echo $currentIp > $filename
        fi
        sleep 12h
done
}


child&
kill $$ #Kill parent and leave child running
exit 0