root@DietPi:~# ping -4 -c 1 one.one.one.one
PING one.one.one.one (1.0.0.1) 56(84) bytes of data.
64 bytes from one.one.one.one (1.0.0.1): icmp_seq=1 ttl=60 time=10.3 ms
--- one.one.one.one ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 10.333/10.333/10.333/0.000 ms
root@DietPi:~# ping -4 -c 1 1.1.1.1
PING 1.1.1.1 (1.1.1.1) 56(84) bytes of data.
64 bytes from 1.1.1.1: icmp_seq=1 ttl=60 time=51.7 ms
--- 1.1.1.1 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 51.693/51.693/51.693/0.000 ms
root@DietPi:~# ping -4 -c 1 dns9.quad9.net
PING dns9.quad9.net (149.112.112.9) 56(84) bytes of data.
64 bytes from dns9.quad9.net (149.112.112.9): icmp_seq=1 ttl=56 time=42.6 ms
--- dns9.quad9.net ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 42.643/42.643/42.643/0.000 ms
root@DietPi:~# ping -4 -c 9.9.9.9
Usage: ping [-aAbBdDfhLnOqrRUvV64] [-c count] [-i interval] [-I interface]
[-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos]
[-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option]
[-w deadline] [-W timeout] [hop1 ...] destination
Usage: ping -6 [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface]
[-l preload] [-m mark] [-M pmtudisc_option]
[-N nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize]
[-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline]
[-W timeout] destination
root@DietPi:~#