Hi varalaxmibbnl,
Several good advice has been given, however comparing the content of the files you presented in your original post.
I can see that file1 is contained in file2 in such a way that if the two files are saved in different arrays, one can use splice to get the difference of the files like: 

use warnings;
use strict;
use Inline::Files;

my @file1 = <DATA1>; # updated

my @file2 = <DATA2>; # updated

print $_ for splice @file2, $#file1 - 1, $#file2;

__DATA1__
hi
1
hw
r 
u
hi
2
hw
r
u


__DATA2__
hi
1
hw
r
u
hi
2
hw
r
u
hi
3
hw
r
u

[download]
NOTE:
This might not work like you wanted, if the lines of the first file doesn't follow just like that of the second file.

Updated: Change chomp(my @file1 = <DATA1>);
chomp is really not needed here, as pointed out by hdb

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me

In reply to Re: difference between two files by 2teez
in thread difference between two files by varalaxmibbnl

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