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How to use ping Linux command

The ping command uses the ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_RESPONSE from a host or gateway. ECHO_REQUEST datagrams (“pings”) have an IP and ICMP header, followed by a struct timeval and then an arbitrary number of “pad” bytes used to fill out the packet.


Check if a host is up with IPv6 address

$ ping -6 www.google.com

Check whether a remote host is up with 3 seconds interval and 5 times

$ ping -c 5 -i 3 www.google.com

Check local network by ping localhost

$ ping 0