[root@localhost ~]# cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
192.168.0.200 test01
[root@localhost ~]# ping -c 4 localhost
PING localhost.localdomain (127.0.0.1) 56(84) bytes of data.
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=0 ttl=64 time=0.053 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=1 ttl=64 time=0.059 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=2 ttl=64 time=0.460 ms
64 bytes from localhost.localdomain (127.0.0.1): icmp_seq=3 ttl=64 time=0.068 ms
--- localhost.localdomain ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 0.053/0.160/0.460/0.173 ms, pipe 2 |