Small wrapper script around ping that reports periods of connectivity loss and rates of packet loss.
Just run python ct.py google.com
Best to use the IP address of the first hop after your router to test your line connectivity.
Output looks like this:
2021-09-29 13:49:44 Packet loss (last 15 mins): 0.0%
2021-09-29 14:02:06 possible lost packet(s): last icmp_seq received was 35345, just received 35347
2021-09-29 14:02:06 7 seconds elapsed since last successful ping
2021-09-29 14:04:45 Packet loss (last 15 mins): 0.33%
Run with -h to see options.