After locating the 15 character long values .There are when i have the same 15 character long value reapeated number of times !!!! Now i wish to find only the unique ones occurence of it. I found this code on the web. What do you suggest me here.

%seen = ();
 @uniq = ();
 foreach $item (@proc_name1) {
     unless ($seen{$item}) {
       $seen{$item} = 1;
       push (@uniq, $item);
    }
 }
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