#!/usr/bin/perl -w
use strict;

find_serv ();
sub find_serv
{
@ARGV == 2 || die "usage: $0 INDEX_FILE  '.com'\n";
my ( $INDEX_FILE, $com ) = @ARGV;
my $list = "grep 'href=' $INDEX_FILE|" ;

 open (my $HAN, "$list" ) || die "Cannot open '$INDEX_FILE' because:: 
+$!";
   while (<$HAN>) {
       chomp $_;
  my @array = split (/\//, $_);
  if ($array[2] =~ /$com/ ){
    my  $sorted =  $array[2];
    system (sort -u $scalar); # - doesn't work
#print "$_\n" for sort { versioncmp($a,$b) } $sorted;
  }}

}

#END

sorted file should look like
www.google.ie
www.icq.com
www.....

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In reply to how to sort uniq $array[2] by auto_w

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