On Thu, 3 Jun 2010 17:35:39 -0400, adeffs.mythtv at gmail.com said: > but it's a 200+meg file, so I'm not quite sure how to do > that easily... $ grep -n '842217516-0000-00-00 00:00:00-44-2125431' dumpfile That will tell you the line numbers in the dumpfile that have the duplicate keys. Can you take it from there?