If we combine the suggestion above with a little knowledge of Perl builtins and command-line options, we get 

 perl -lne 'print if length == 15 and not /(.).*\1/' /usr/share/dict/w
+ords

[download]
Well, you asked for succinct... <grin>

Update: added auto-chomp (shame, shame).


If God had meant us to fly, he would *never* have given us the railroads.
    --Michael Flanders

In reply to Re: Coffee time quiz by ChemBoy
in thread Coffee time quiz by perlmoth

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