x x x xdeMacBook-Pro:~ x x x x$ ping 1.1.1.1
PING 1.1.1.1 (1.1.1.1): 56 data bytes
64 bytes from 1.1.1.1: icmp_seq=0 ttl=63 time=5.270 ms
64 bytes from 1.1.1.1: icmp_seq=1 ttl=63 time=2.746 ms
64 bytes from 1.1.1.1: icmp_seq=2 ttl=63 time=2.730 ms
64 bytes from 1.1.1.1: icmp_seq=3 ttl=63 time=2.689 ms
64 bytes from 1.1.1.1: icmp_seq=4 ttl=63 time=2.875 ms
64 bytes from 1.1.1.1: icmp_seq=5 ttl=63 time=2.886 ms
^C
--- 1.1.1.1 ping statistics ---
6 packets transmitted, 6 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 2.689/3.199/5.270/0.929 ms
x x x xdeMacBook-Pro:~ xxxx$
很不错啊