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  1. or download this
    read FILE, $myinput, 12;
    my($var1, $var2, $var3, $var4) = unpack('A3A3A3A3', $myinput);
    ...
    print "$var2\n";
    print "$var3\n";
    print "$var4\n";
    
  2. or download this
    Use of uninitialized value in concatenation (.) or string at myscript.
    +pl line 20.