updatechecker.sh

#!/bin/bash

# edit this, should be login details for sms.se and your phone number
loginnumber="0701234567"
password="abc123"
sendTo="0701234567"

# you shouldn't have to edit anything beyond this point

if [ $# != 1 ]; then
        echo "Usage: $0 <url>"
        exit
fi

page=$1
tmpSum=/tmp/updatechecker/sum
tmpFile=/tmp/updatechecker/file
tmpCookie=/tmp/updatechecker/cookie

if [ ! -e /tmp/updatechecker/ ]; then
        echo -n "Creating /tmp/updatechecker/..."
        mkdir /tmp/updatechecker
        echo " done!"
fi

echo -n "Downloading file..."
wget -O $tmpFile $page 2&> /dev/null
echo " done!"

if [ -f $tmpSum ]; then
        echo -n "Comparing checksums..."
        oldSum=`cat $tmpSum`
        currentSum=`md5sum $tmpFile | cut -d " " -f1`
        echo " done!"

        if [ "$oldSum" != "$currentSum" ]; then
                echo -n "Sums differ, alerting via sms..."

                wget -O - "http://www.sms.se/action.php?action=login" --post-data "cellphone=$mnumber&password=$password&buttonName=x" --keep-session-cookies --save-cookies $tmpCookie 2&> /dev/null
                wget -O - "http://www.sms.se/action.php?action=sendsms&type=1" --post-data "tocellphone=$sendTo&text=$meddelande2&remaining=160&thesubmit=x" --load-cookies $tmpCookie 2&> /dev/null
                wget -O - "http://www.sms.se/action.php?action=logout" --load-cookies $tmpCookie 2&> /dev/null

                echo " done!"

        else
                echo "Sums are the same, do not alert..."
        fi


fi

echo $currentSum > $tmpSum