Convert IP addresses (e.g. from httpd logs) to GeoJSON

geoip.sh

#!/bin/bash -eu
echo {\"type\": \"GeometryCollection\", \"geometries\": [
sep=
while read ip ; do
	coordinates=$(curl -s freegeoip.net/csv/$ip | csvtool col 9,8 -)
	echo $sep{\"type\": \"Point\", \"coordinates\": [$coordinates]}
	sep=,
done
echo ]}