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 dial(2)). The target host,
if up, should send a corresponding reply. By default, one
line is printed for each reply, containing the sequence num-
ber (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
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 4/26/24)