When I'm on a train, over 4G, and the connection drops in and out, I want to know:
How bad is my connection?
Travelping pings a well known server every 5 seconds and reports the time (or timeout).
cd ~/bin curl -O https://raw.githubusercontent.com/jonatanblue/travelping/master/travelping chmod +x travelping
$ travelping time=22.216 ms time=15.983 ms time=14.186 ms time=16.080 ms time=13.095 ms ...