PING(
System Manager's Manual: iputils PING(
NAME
ping, ping6 - send ICMP ECHO_REQUEST to network hosts
SYNOPSIS
ping [-LRUbdfnqrvVaAB] [-c count] [-m mark] [-i interval] [-l
preload] [-p pattern] [-s packetsize] [-t ttl] [-w deadline] [-F
flowlabel] [-I interface] [-M hint] [-N nioption] [-Q tos] [-S snd‐
buf] [-T timestamp option] [-W timeout] [hop ...] destination
DESCRIPTION
ping 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.
ping6 can also send Node Information Queries (RFC4620).
OPTIONS
-a Audible ping.
-A Adaptive ping. Interpacket interval adapts to round-trip
time, so that effectively not more than one (or more, if
preload is set) unanswered probes present in the network.
Minimal interval is 200msec for not super-user. On networks
with low rtt this mode is essentially equivalent to flood
mode.
-b Allow pinging a broadcast address.
-B Do not allow ping to change source address of probes. The
address is bound to one selected when ping starts.
-m mark
use mark to tag the packets going out. This is useful for
variety of reasons within the kernel such as using policy
routing to select specific outbound processing.
Manual page ping(
line 1 (press h for help or q to quit)