$ echo -e "GET /automation/n09230945.asp HTTP/1.0rnHost: whatismyip.comrn" | nc whatismyip.com 80 | tail -n1

• <a href="http://www.commandlinefu.com/commands/view/3962/get-your-external-ip-address">View this command to comment, vote or add to favourites
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by David Winterbottom (<a href="http://codeinthehole.com">codeinthehole.com)

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URL: <a href="http://feedproxy.google.com/~r/Command-line-fu/~3/7xln2n56mnk/get-your-external-ip-address">http://feedproxy.google.com/~r/Command-line-fu/~3/7xln2n56mnk/get-your-external-ip-address<h6 class="zemanta-related-title" style="font-size: 1em;">Related articles by Zemanta <ul class="zemanta-article-ul"> <li class="zemanta-article-ul-li"><a href="http://www.computer-realm.net/how-find-computers-ip/">How to Find Out Your Computer&#8217;s IP (computer-realm.net) <div class="zemanta-pixie" style="margin-top: 10px; height: 15px;"><a class="zemanta-pixie-a" title="Reblog this post [with Zemanta]" href="http://reblog.zemanta.com/zemified/42c8d78f-7105-47fc-9f21-6df9065a21a3/"><img class="zemanta-pixie-img" style="border: medium none; float: right;" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/reblog_e29.png" alt="Reblog this post [with Zemanta]" /><span class="zem-script more-related pretty-attribution">