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<?xml version="1.0" encoding="utf-8"?>
<gpx version="1.1" creator="navsys logger"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns="http://www.topografix.com/GPX/1.1"
        xsi:schemaLocation="http://www.topografix.com/GPS/1/1
        http://www.topografix.com/GPX/1/1/gpx.xsd">
<metadata>
  <name>NavSys GPS logger dump</name>
  <author>Amaury Jacquot</author>
  <copyright>BSD or GPL v 2.0</copyright>
</metadata>
<trk>
  <trkseg>
   <trkpt lat="11.111111" lon="-2.222222">
    <ele>nan</ele>
    <time>2010-08-31T11:10:41Z</time>
    <fix>2d</fix>
   </trkpt>

gpxlogger | awk -F \" '/<trkpt/ { print "http://maps.google.com/maps?q="$2","$4 }'

sed -rn '/<trkpt lat="/{s%.* lat="([^"]+)" lon="([^"]+)">.*%http://maps.google.com/maps?q=\1,\2%;p}'