How to find hostname from a given IP address in LAN?

Ruby
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how to find hostname from a given IP address in LAN ?

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Pokkai D. wrote:
| how to find hostname from a given IP address in LAN ?

Reverse DNS lookup.

Phillip G.
Twitter: twitter.com/cynicalryan

~ - You know you’ve been hacking too long when…
…you stare blankly at the screen and your fingers type “rwho” without
any help from your brain. …you get tired of screens full of worthless
information scrolling so you alias rwho. …you subconsciously start
typing “/usr/ucb/rwho” to bypass your alias. …you alias
/usr/ucb/rwho, but bypass that alias simply by inserting extra "/"s.
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Phillip G. wrote:

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Pokkai D. wrote:
| how to find hostname from a given IP address in LAN ?

Reverse DNS lookup.

Phillip G.
Twitter: twitter.com/cynicalryan

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how by using rwho ?
can you give a small example

thank you

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Hi,
----- Original Message -----
From: “Pokkai D.” [email protected]
Newsgroups: comp.lang.ruby
To: “ruby-talk ML” [email protected]
Sent: Tuesday, April 15, 2008 7:32 PM
Subject: how to find hostname from a given IP address in LAN ?

how to find hostname from a given IP address in LAN ?

Posted via http://www.ruby-forum.com/.

C:\Documents and Settings\phasis>irb
irb(main):001:0> Socket::getaddrinfo(‘210.180.98.85’,nil)[0][2]
=> “ns.hananet.net”

Regards,

Park H.

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thank you

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On Tue, Apr 15, 2008 at 1:39 PM, Pokkai D. [email protected]
wrote:

Phillip G. wrote:

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Pokkai D. wrote:
| how to find hostname from a given IP address in LAN ?

Reverse DNS lookup.

http://support.microsoft.com/kb/164213
RFC 1035, section 3.5