Notes
How to install ADS-B Exchange software
$ sudo bash -c "$(wget -q -O - https://raw.githubusercontent.com/wiedehopf/adsb-scripts/master/readsb-install.sh)"
$ wget -O /tmp/axfeed.sh https://raw.githubusercontent.com/adsbxchange/adsb-exchange/master/install.sh
$ sudo bash /tmp/axfeed.sh
$ wget -O /tmp/axstats.sh https://raw.githubusercontent.com/adsbxchange/adsbexchange-stats/master/stats.sh
$ sudo bash /tmp/axstats.sh