
Ping
Ping (pîng)
A river, about 563 km (350
mi) long, of western Thailand. It is a major tributary of the Chao Phraya.
ping
ping (pîng) noun
1.A sharp, high-pitched
sound, as that made by a bullet striking metal.
2.knock.
verb, intransitive
pinged, pinging, pings
To make a sharp, high-pitched,
metallic sound.
[Imitative.]
ping1
ping (ping) noun
1. Acronym for Packet Internet
Groper. A protocol for testing whether a particular computer is connected
to the Internet by sending a packet to its IP address and waiting for a
response. The name actually comes from submarine active
sonar,
where a sound signal- called a "ping"- is broadcast, and surrounding objects
are revealed by their reflections of the sound.
2. A UNIX utility that implements
the ping protocol. Also called ping program.
ping2
ping (ping) verb
1. To test whether a computer
is connected to the Internet using the ping program.
2. To test which users on
a mailing list are current by sending e-mail to the list asking for a response.
ping (noun)
roll: booming, clang, ping,
reverberation,
resonance
resonance: ping, ring, ting-a-ling,
chime
ping (verb)
roll: reverberate, clang,
ping, ring, sing, sing in the ear
resound: ping, ring, ding
Ping of Death
Ping of Death (pêng`
ev deth') noun
A form of Internet vandalism that
entails sending a packet that is substantially larger than the usual 64 bytes
over the Internet via the ping protocol to a remote computer. The size of the
packet causes the computer to crash or reboot.
Beloved to
network
administrators around the world, Ping was originally a utility that worked with
the legendary BSD version of Unix created at Berkeley, but is now an essential
part of almost every operating system. Functionally, it is the simplest of tools
-- it sends a single packet of
information
to an
Internet
address to see if that address is reachable. As a debugger of Internet connections,
Ping was/is invaluable.
Ping's usefulness was so
important that the term quickly became a part of geek jargon. To "ping"
a person meant to
contact
that person via any means. "Ping me again if you don't hear from me about
your question tomorrow," one
hacker
might say to another.
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Engineers at
Goddard Space Flight Center in Greenbelt, Md., successfully contacted UoSAT-12
spacecraft through a ground station in Surrey, England, using
Internet
ping packets. The project, called Operating Missions as
Nodes
on the Internet (OMNI), was the first
time
that a spacecraft ever had its own Internet address and was a fully RFC-compliant
active node on the Internet.
ping
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[from the submariners' term
for a sonar
pulse]
1. n. Slang term for a small
network
message (ICMP ECHO) sent by a computer to check for the presence and alertness
of another. The Unix command ping(8) can be used to do this manually (note
that ping(8)'s author denies the widespread folk etymology that the name
was ever intended as acronym for `Packet INternet Groper'). Occasionally
used as a
phone
greeting. See ACK, also ENQ. 2. vt. To verify the presence of. 3. vt. To
get the attention of. 4. vt. To send a message to all members of a mailing
list requesting an ACK (in order to verify that everybody's addresses are
reachable). "We haven't heard much of anything from Geoff, but he did respond
with an ACK both times I pinged jargon-friends." 5. n. A
quantum
packet of happiness. People who are very happy tend to exude pings; furthermore,
one can
intentionally
create pings and aim them at a needy party (e.g., a depressed person).
This sense of ping may appear as an exclamation; "Ping!" (I'm happy; I
am emitting a quantum of happiness; I have been struck by a quantum of
happiness). The form "pingfulness", which is used to describe people who
exude pings, also occurs. (In the standard abuse of
language,
"pingfulness" can also be used as an exclamation, in which case it's a
much stronger exclamation than just "ping"!). Oppose blargh.
The funniest use of `ping'
to date was described in January 1991 by Steve Hayman on the
Usenet
group comp.sys.next. He
was trying to isolate a faulty cable segment on a TCP/IP Ethernet hooked
up to a NeXT machine, and got tired of having to run back to his console
after each cabling tweak to see if the ping packets were getting through.
So he used the sound-recording feature on the NeXT, then wrote a script
that repeatedly invoked ping(8), listened for an echo, and played back
the recording on each returned packet. Result? A program that caused the
machine to repeat, over and over, "Ping ... ping ... ping ..." as long
as the network was up. He turned the volume to maximum, ferreted through
the building with one ear cocked, and found a faulty tee connector in no
time.
- _The New
Hacker's
Dictionary_
by
Eric
S. Raymond
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