http://www.perlmonks.org?node_id=817035

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---

#!/bin/perl -w
use strict;

my $file1 = "../../../180_top_height_snps_annotatedwextra.afrd.efrd.al
+l.lsrd.txt";
my $file2 = "../../../EXETER-HEIGHT-ALL-MAC3-20091217-stderr.1.rsIDsal
+l.nor2.ma.afrd.efrd.lsrd.tbl";
my @badones;
my @array1;
my %hash2;

open (INPUT1, $file1) || die "Cannot open $file1";

while (<INPUT1>) {
        my @infoparse = split(/\s+/);
        chomp (@infoparse);
        push (@array1, \@infoparse);
}

close(INPUT1);


@array1 = sort {$array1[$a]->[3] <=> $array1[$b]->[3]} (@array1);
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