#!/bin/bash

wget http://www.yahoo.com

n_count=`cat index.html | wc -l`

o_count=`cat index.html.BU | wc -l`

echo "Counting lines..."

if [ $o_count -gt $n_count ]; then

        echo "The web page has more lines now"

elif [ $o_count -lt $n_count ]; then

        echo "The web page has less lines now"

else

        echo "The web page has the same number of lines"

fi

echo "Old count is $o_count, the new count is $n_count"
echo "Backing up ..."
cat index.html > index.html.BU

echo "Cleaning up..."
rm -rf index.html

echo "Done"