While named somewhat poorly for what it is sometimes used for SIGQUIT can be used for this. Ping uses it for statistics reporting in the middle of pinging. You can use Ctrl+\ in the terminal to send it. E.g.

    $ ping google.com
    PING google.com (172.217.5.110) 56(84) bytes of data.
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=1 ttl=54 time=4.04 ms
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=2 ttl=54 time=4.04 ms
    2/2 packets, 0% loss, min/avg/ewma/max = 4.037/4.039/4.037/4.042 ms
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=3 ttl=54 time=4.16 ms
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=4 ttl=54 time=4.06 ms
    4/4 packets, 0% loss, min/avg/ewma/max = 4.037/4.076/4.054/4.164 ms
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=5 ttl=54 time=4.19 ms
    64 bytes from sfo03s07-in-f110.1e100.net (172.217.5.110): icmp_seq=6 ttl=54 time=4.20 ms
    ^C
    --- google.com ping statistics ---
    6 packets transmitted, 6 received, 0% packet loss, time 11ms
    rtt min/avg/max/mdev = 4.037/4.114/4.195/0.068 ms