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Date: Fri, 13 Aug 2010 17:23:06 +0200
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From: "Len Conrad" <lconrad@Go2France.com>
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Subject: awk problem
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I readfile or pipe this text, in any line order:

rm90.steampick.info
fgce172.lanejive.info
smailer1.service.govdelivery.com
fl49.orangetalon.info
pollux.carespecial.info

into a program to remove subdomains down to domain.tld :

awk 'FS="." { print $(NF-1)"."$NF }'

and get the first line doubled rather than processed like the other lines:

rm90.steampick.info.rm90.steampick.info
lanejive.info
govdelivery.com
orangetalon.info
carespecial.info

thanks
Len