I have 2 files and i want to diff the two files such that i have 3 files at the end of the diff
1. UniqueDataInFile1

2. UniqueDataInFile2

3. CommonData
This is the code that i have come up with so far...it is not right and i am not clear on how i can iterate till eof of first file and look for the item in file1 in file2. Will appreciate any pointers, help here and no i am not trying to get someone to do my homework. TIA 

my $infile1="infile1.txt";
my $infile2="infile2.txt";


open INFILE1, '<', $infile1 or die "could not open '$infile1' $!";
open INFILE2, '<', $infile2 or die "could not open '$infile2' $!";

open (FileA, ">DataFromFile1.txt") || die "Unable to open TextInFile1O
+nly.txt for writing \n";
#open (FileB, ">DataFromFile2.txt") || die "Unable to open TextInFile1
+Only.txt for writing \n";
open (FileC, ">CommonDataFromTwoFiles.txt") || die "Unable to open Tex
+tInFile2Only.txt for writing \n";

my @dataInFile1=<INFILE1>;
my $val;
my @ArrayA;
my $last_element;

while(my $line=<INFILE2>)
{
 if ($line=~ m/$dataInFile1[0]/i)
 {

     print FileC $dataInFile1[0];
        push @dataInFile1, shift @dataInFile1;
 }
}

[download]

infile1
--------

yahoo

google

msn,/br.
abc

infile2
--------

yahoo

google

safeway

walmart

kmart

output1
--------

msn

abc

output2
--------

safeway

walmart

kmart

output3
--------
yahoo
google

In reply to Diff 2 files and print output to file by Anonymous Monk

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