#!/bin/bash

echo "Enter File Name : \c "

read fileName
if [ -f $fileName ]
then
str=`cat $fileName`
len=`echo $str|wc -c`
i=$len
while [ $i -ge 1 ]
do
temp=$temp`echo $str|cut -c $i`
i=`expr $i - 1`
done
echo $temp>Result_ex2f.txt
cat Result_ex2f.txt
else
echo "file [ $fileName ] not exist in \c "
pwd
fi