based on my original code! (:
perl -ne '/(\S*)\s+(\S*)/;(!$h{$1})?$h{$1}=$2:print "$1 $h{$1} $2\n";' file1 file2


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"one who asks a question is a fool for five minutes; one who does not ask a question remains a fool forever."

mk at perl dot org dot br

In reply to Re^2: comparing two files for duplicate entries by mk.
in thread comparing two files for duplicate entries by Angharad

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