#!/usr/bin/perl
use strict;
use warnings;


open (IN,"testdata.dat") or die;
open (OUT,">>./someRN.txt") or die;
my $i=1;


while (<IN>) {
chomp;
if ($i>=2&&$i<=4) { #..1000.2000........LZ...........
 print OUT "$_\n";
 }
 $i++;
}


seek(IN,0);


$i=1;
while (<IN>) {
chomp;
if ($i>=6&&$i<=8) { #..1000.2000........LZ...........
 print OUT "$_\n";
 }
 $i++;
}




close IN;
close OUT;