ping(1M)                        TCP/IP 5.4.2                        ping(1M)


NAME
       ping - check Internet network node

SYNOPSIS
       /usr/bin/ping host [ timeout ]

DESCRIPTION
       The ping command tests whether a node on an Internet network is up
       and working, though the upper layers of TCP/IP need not be up.  This
       program sends an ICMP echo packet to host using a RAW socket
       interface, expecting the required ICMP response.  If the ICMP packet
       is sent and received correctly, then a message is printed saying that
       host is alive.  If there are errors locating host, creating the
       socket, sending the message, or receiving the message, an error
       message is printed.

       The ping continues testing the network until timeout seconds have
       elapsed or until an answer is received.  The default timeout is 20
       seconds.  The host argument can be a name or an Internet address.

EXAMPLE
           $ ping harpo
           harpo is alive (This line is returned.)

SEE ALSO
       ruptime(1C).































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