Well, what have you tried? Counting the ids in the loop can be done with $ids{$person}++; and you can output the list with 
foreach (keys %ids) {
   print "$_ $ids{$_} id\'s\n";
}

[download]
Which of these two were you having trouble with?

In reply to Re: Simple perl counter by matija
in thread Simple perl counter by cosmicsoup

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