Good idea, but removing the hard coding of file names perhaps gives.... 

perl -ne "
$ARGV eq $ARGV[0] ?
    $h{$_}++ : 
        $h{$_} ? 0 : print;
" small.txt large.txt

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In reply to Re^2: a one-liner for this trivial problem? by space_monk
in thread a one-liner for this trivial problem? by Anonymous Monk

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