Hi Two files, if the first line and the first column are the same, print this line, the second line, the third line,the fourth line. What's wrong with me? 

 01.txt
>SR1.2
>SR1.3

02.txt
>SR1.1 HWI-ST
ATGCTGCT
TCGTCGAT
CTGATCAGCTAC
>SR1.2 HWI-ST0
TTTTGCTGCT
TCGTTGGG
CTTTATCAGCTAC
>SR1.3 HWI-ST0787
GGGGGCTGCT
AATCGTCGAT
AACTGATCAGCTAC

result
>SR1.2 HWI-ST0
TTTTGCTGCT
TCGTTGGG
CTTTATCAGCTAC
>SR1.3 HWI-ST0787
GGGGGCTGCT
AATCGTCGAT
AACTGATCAGCTAC



#!/usr/bin/perl -w
use strict;
open(IN1,"01.txt") || die "Cannot open this file";
my @lines1 = <IN1>;
open(IN2,"02.txt") || die "Cannot open this file";
my @lines2 = <IN2>;
my $i=0;
open(OUT,">out01") || die "Cannot open this file";
for my  $item1(@lines1){
        chomp $item1;
        my@tmp1=split(/\s+/, $item1);
for my  $item2(@lines2){
        chomp $item2;
        my @tmp2=split(/\s+/, $item2);
                if ($tmp1[0] eq $tmp2[0]){
                        print OUT $lines2[$i],"\n",$lines2[$i+1],$line
+s2[$i+2],$lines2[$i+3];
                        last;
                }
        $i++;
}
print OUT "\n";

}

close(IN1);
close(IN2);
close(OUT);

[download]
Thanks in advance!

In reply to Two files, if the first line and the first column are the same, print this line, the second line, the third line,the fourth line. by yueli

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