> sort -t, -k 5 | sed 's/,/ /g' | uniq -f4 -w13
$ sort -t"," -k5,5 -u input_file

Hmmm, my manpage only listed -k=POS . Is -k=POS1[,POS2] a recent addition ? Doesn't really matter, that machine got blown away last night for a full upgrade anyway, so the new(er) version of sort will be available
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Michael O'Keefe                      |          [EMAIL PROTECTED]
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