perl -lape'BEGIN{%$=map/\S+/g,`cat file2`}$F[2]=${$}{$F[2]}||$F[2];$_=
+"@F"' file1

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HTH. HAND.

In reply to Re: Matching column in different files to create a third one by JavaFan
in thread Matching column in different files to create a third one by Anonymous Monk

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