8(PING) 8(PING)
NAME
ping - probe the Internet
SYNOPSIS
ip/ping [-alq] [ -i interval ] [ -s size ] [ -n nping ]
destination
DESCRIPTION
Ping sends ICMP echo requests to a network destination
(which has the syntax accepted by sys-dial(2)). The target
host, if up, should send a corresponding reply. By default,
one line is printed for each reply, containing the sequence
number (starting at 0) of the message it answers, the round
trip time for that reply, the average round trip time so
far, and the `time to live' value from the reply packet.
The options are:
-a include source and destination IP addresses in the out-
put
-i interval
send requests with the given interval between messages,
in milliseconds (default: 1 second)
-l list only lost messages
-n nping
send nping messages in all (default: 32)
-q suppress per-packet output, giving summary data only
-s size
send request packets of the given size in bytes
(default: 64, minimum 32)
SOURCE
/appl/cmd/ip/ping.b
SEE ALSO
sys-dial(2), ip(3)
DIAGNOSTICS
Ping yields an error status if any request had no corre-
sponding reply.
BUGS
Works only on native Inferno and when hosted on Plan 9,
owing to the lack of access to ICMP on other hosted systems.
Page 1 Plan 9 (printed 12/21/24)