NAME
     ping - ask a host whether it is there

SYNOPSIS
     ping [ -c count ] host

DESCRIPTION
     Ping sends ICMP echo requests to host and prints what comes back:

          PING gnu.org (208.118.235.148): 56 data bytes
          64 bytes from 208.118.235.148: icmp_seq=1 time=87.200 ms

     Host may be a name, which is resolved, or a dotted-quad address, which is
     not.  Four requests are sent by default, one a second, each waited on for
     a second before it counts as lost.  A summary of packets sent, packets
     received, loss, and the minimum, average and maximum round-trip time
     follows the last reply.

     Ping speaks to the network directly rather than through /net/tcp, so it
     works on a deck with its own IPv4 stack -- the WiFi build.  On a deck
     whose network is borrowed from a crystal over BLE there is no local ICMP
     to send from, and ping says so and stops.

OPTIONS
     -c count
          Send count requests instead of four.

KEYS
     ctrl-C
          Stop early.  The statistics for what has been sent so far are still
          printed.

EXAMPLES
     ping gnu.org
     ping -c 10 192.168.1.1

SEE ALSO
     attune(1), nc(1), con(1)

NOTES
     The exit status is zero if at least one reply arrived, so ping can be
     used as a test in a script.

     A host that does not answer is not necessarily down; plenty of them drop
     ICMP on purpose.  If you want to know whether a service is up, dial it
     with nc(1).

FRST Computer                                                          PING(1)
