#!/bin/bash  


#take file name from user
#and store the input in f variable
echo "Enter the file name :"
read f

#take starting line from user 
#and store the input in s variable
echo "Enter the starting line :"
read s 

#take ending line from user 
#and store the input in e variable
echo "Enter the ending line :"
read e

#printing the specified lines to console.
sed -n $s,$e\p $f