How to Determine my Internet IP Address

I'm looking for a reasonably future-proof way to find the IP address of
a machine as seen from the Internet.

This worked once but not now. It was probably removed due to excessive
traffic:

wget -O- http://cfaj.freeshell.org/ipaddr.cgi 2>/dev/null

Other suggestions please?

Has any organisation decided to save the world and provide a
script-parseable IP address of the requesting machine?

--
Dave Farrance

On Sun, 04 Jun 2006 10:57:16 GMT, Dave Farrance <(E-Mail Removed)> wrote:

>I'm looking for a reasonably future-proof way to find the IP address of
>a machine as seen from the Internet.

host 82.33.49.20
20.49.33.82.in-addr.arpa domain name pointer 82-33-49-20.cable.ubr05.stav.blueyonder.co.uk.

Grant.
--
http://bugsplatter.mine.nu/

Grant <(E-Mail Removed)> wrote:

>On Sun, 04 Jun 2006 10:57:16 GMT, Dave Farrance <(E-Mail Removed)> wrote:
>
>>I'm looking for a reasonably future-proof way to find the IP address of
>>a machine as seen from the Internet.
>
>host 82.33.49.20
>20.49.33.82.in-addr.arpa domain name pointer 82-33-49-20.cable.ubr05.stav.blueyonder.co.uk.

Hmm. Not exactly future proof, or much good for a script, is it?

Maybe a script to post to alt.test on a free newsserver like aioe.org
and to search for, read, and parse the headers? :-)

--
Dave Farrance

["Followup-To:" header set to comp.unix.shell.]
On Sun, 04 Jun 2006 10:57:16 GMT, Dave Farrance
<(E-Mail Removed)> wrote:
> I'm looking for a reasonably future-proof way to find the IP address of
> a machine as seen from the Internet.
>
> This worked once but not now. It was probably removed due to excessive
> traffic:
>
> wget -O- http://cfaj.freeshell.org/ipaddr.cgi 2>/dev/null
>
> Other suggestions please?
>
> Has any organisation decided to save the world and provide a
> script-parseable IP address of the requesting machine?
>
ifconfig


--
The sum of the intelligence of the world is constant. The population is,
of course, growing.

In comp.unix.shell Dave Farrance <(E-Mail Removed)>:
> I'm looking for a reasonably future-proof way to find the IP address of
> a machine as seen from the Internet.

> This worked once but not now. It was probably removed due to excessive
> traffic:
>
> wget -O- http://cfaj.freeshell.org/ipaddr.cgi 2>/dev/null

> Other suggestions please?

> Has any organisation decided to save the world and provide a
> script-parseable IP address of the requesting machine?

There are numerous if you can't find it out from the inside:

lynx -dump http://www.mediacollege.com/internet.../show-ip.shtml \
| awk '/is:/{print $NF}'

Though there's no guarantee if this won't change.

--
Michael Heiming (X-PGP-Sig > GPG-Key ID: EDD27B94)
mail: echo (E-Mail Removed) | perl -pe 'y/a-z/n-za-m/'
#bofh excuse 95: Pentium FDIV bug

Michael Heiming <michael+(E-Mail Removed)> wrote:

>lynx -dump http://www.mediacollege.com/internet.../show-ip.shtml \
> | awk '/is:/{print $NF}'

>Though there's no guarantee if this won't change.

Thanks, that works. I guess that it's the best that can be expected,
even if change is odds-on in the next few years. I've searched out a
few more sites that respond similarly:

lynx -dump http://www.formyip.com/ | awk '/IP is/{print $NF}'

lynx -dump http://www.showipaddress.com/ \
| awk '/IP address:/{print $NF}'

lynx -dump http://www.auditmypc.com/whats-my-ip.asp \
| awk '/current IP/{print $NF}'

lynx -dump http://www.edpsciences.org/htbin/ipaddress \
| awk '/IP address is/{print $NF}'

lynx -dump http://www.pcmesh.com/ip-check.cgi \
| awk '/REMOTE_ADDR/{print $2}'

--
Dave Farrance

Michael Heiming <michael+(E-Mail Removed)> writes:
>
> In comp.unix.shell Dave Farrance <(E-Mail Removed)>:
>> I'm looking for a reasonably future-proof way to find the IP address of
>> a machine as seen from the Internet.
>
>> This worked once but not now. It was probably removed due to excessive
>> traffic:
>>
>> wget -O- http://cfaj.freeshell.org/ipaddr.cgi 2>/dev/null
>
>> Other suggestions please?
>
>> Has any organisation decided to save the world and provide a
>> script-parseable IP address of the requesting machine?
>
> There are numerous if you can't find it out from the inside:
>
> lynx -dump http://www.mediacollege.com/internet.../show-ip.shtml \
> | awk '/is:/{print $NF}'
>
> Though there's no guarantee if this won't change.

I think WhatIsMyIP.com is the most obvious one, but there's no
guarantee this won't change either. It's been my experience that the
plain text emitted by lynx -dump changes with upgrades to lynx
too. Since it's not that hard to parse the HTML itself, something like

perl -MLWP::Simple -le '$_=get q(http://www.whatismyip.com/); \
print $1 if /Your IP Is ((\d{1,3}\.){3}\d{1,3})/'

might be slightly less fragile than

lynx -dump http://whatismyip.com | awk '/Your IP Is/{print $NF}'

Tim

On Sun, 04 Jun 2006 13:10:01 GMT, Dave Farrance <(E-Mail Removed)> wrote:

>Grant <(E-Mail Removed)> wrote:
>
>>On Sun, 04 Jun 2006 10:57:16 GMT, Dave Farrance <(E-Mail Removed)> wrote:
>>
>>>I'm looking for a reasonably future-proof way to find the IP address of
>>>a machine as seen from the Internet.
>>
>>host 82.33.49.20
>>20.49.33.82.in-addr.arpa domain name pointer 82-33-49-20.cable.ubr05.stav.blueyonder.co.uk.
>
>Hmm. Not exactly future proof, or much good for a script, is it?

Point is, your machine knows what it is, but you looking outside
instead of inside -- and you have a lousy sense of humour

Grant.
--
http://bugsplatter.mine.nu/

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Dave Farrance wrote:
> I'm looking for a reasonably future-proof way to find the IP address of
> a machine as seen from the Internet.

FWIW, I put together some automation, and used the 'free' personal webpage
provided by my ISP to give myself a 'rendesvous' site and redirect webpage.
You can find the details in an article I wrote for Linux Gazette issue 104
(http://linuxgazette.net/105/pitcher1.html).

HTH
- --
Lew Pitcher

Master Codewright & JOAT-in-training | GPG public key available on request
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.
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Lew Pitcher wrote:
> Dave Farrance wrote:
>>> I'm looking for a reasonably future-proof way to find the IP address of
>>> a machine as seen from the Internet.
>
> FWIW, I put together some automation, and used the 'free' personal webpage
> provided by my ISP to give myself a 'rendesvous' site and redirect webpage.
[snip]

I just realized that the technique I used in the article is probably overkill
for your problem. You can take a look at a simpler procedure that I wrote
about for The Slack World, issue 4 at
http://slackworld.berlios.de/04/essence-2.html

HTH
- --
Lew Pitcher

Master Codewright & JOAT-in-training | GPG public key available on request
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.
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