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 Ping 

Ping is the name of a computer network tool used on TCP/IP networks (such as the Internet). It provides a basic test of whether a particular host is operating properly and is reachable on the the network from the testing host. It works by sending ICMP packets to the target host and listening for replies; its operation is vaguely analogous to sonar in submarines, hence the name.

The tool was written by Mike Muuss.

Related network tools include traceroute.

Sample ping output

Below is a sample output where we ping the wikipedia.com server: 

 tux@debian:~$ ping -c 5 wikipedia.com
 PING wikipedia.com (130.94.122.195): 56 data bytes
 64 bytes from 130.94.122.195: icmp_seq=0 ttl=235 time=284.3 ms
 64 bytes from 130.94.122.195: icmp_seq=1 ttl=235 time=292.9 ms
 64 bytes from 130.94.122.195: icmp_seq=2 ttl=235 time=289.7 ms
 64 bytes from 130.94.122.195: icmp_seq=3 ttl=235 time=282.4 ms
 64 bytes from 130.94.122.195: icmp_seq=4 ttl=235 time=272.0 ms

 
 --- wikipedia.com ping statistics ---
 5 packets transmitted, 5 packets received, 0% packet loss
 round-trip min/avg/max = 272.0/284.2/292.9 ms
 tux@debian:~$

External Link

Ping is also a character in the book The Story about Ping[?], by Marjorie Flack[?] and Kurt Wiese[?] (see slashdot review (http://slashdot.org/books/99/01/31/1246212.shtml))

down.html">down.html">down some time. Why shouldn't we have a picnic.html">picnic down at the river?" "Oh, yes, let's!" Bunty cried, with sparkling eyes. "I'm sure we could manage it especially as it's Saturday, and Pip "Two of you could go/go.html">go and get some food. Tell Martha you are all set--then you go on. Two others can watch if the coast's clear corner of the road we're safe." It seemed feasible enough, and in a very short time the preparations to get Judy safely away, and Bunty had been stationed on the back then, if all was well, to bring the big billy and a bread loaf, meditative fowl, and reviewed the events of the last few exciting tell. Perhaps it was the lie he had told his father, and which was courage oozed away every time he thought of that riding-whip. Perhaps it was the reaction after the great excitement. Or it may deeds on Judy's behalf evoked from the others. They did not seem to alluded to them or drew public attention to his scars. Two or was standing waiting he turned down his stockings.html">stockings and gazed at these splashing down on one extended bare leg. "Judy likes Pip best, and says I'm a greedy pig--nobody cares!" Another great fat tear gathered and fell. "Have you taken root and marvelling at his rare and exceeding quietness. Bunty started, guiltily, and pulled up his stockings. "I'm not doin' nothin'," he said aggrievedly, after a minute's at all. I'm goin' to a picnic." "Ah, indeed!" said the Captain. "You looked as if you were was it?" Bunty turned a little pale, but remarked again he "wasn't doin' .

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