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bash-3.00$ cat compare.sh
#NOTE : 1.Filename must not have space for the script to work.
# 2.Script wont work if symlinks are there instead of proper filenames.

#!/bin/bash
#set -x
...

Here is a little BASH trick to avoid these problems...

#!/bin/bash

function myLoop()
{
echo $1 |
while read WORD
do
echo $WORD|egrep "[0-9]" 2>/dev/null 1>/dev/null
...