[gentoo-user] [way OT] determining date of web pages

[gentoo-user] [way OT] determining date of web pages

[reader]

I should probably know this having been an active computer user for a
decade or more but ...never really looked into it.

How can I tell ahead of time or quickly what the vintage of a webpage
that looks interesting is?

I often find when looking for some kind of consumer good like a DVR or
something that the hot item I'm reading about was posted in 2004 after
having spent a 1/2 hr reading to that point.

Or worse yet... never really see any indication of when something was
written.

Here is an example page:
 http://dvr.about.com/od/capturetvwithacomputer/ht/htnti.htm

How can I tell quickly when this was written?

A related point is how accurate is it to use the google advanced
search and specify `last 3 mnths' or the like?

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Re: [gentoo-user] [way OT] determining date of web pages

[Benno Schulenberg]

reader@newsguy.com wrote:
> How can I tell ahead of time or quickly what the vintage of a
> webpage that looks interesting is?

In general: you can't.  If a page does not contain the date it was 
made, there's no other way to find out.

> Here is an example page:
>  http://dvr.about.com/od/capturetvwithacomputer/ht/htnti.htm
>
> How can I tell quickly when this was written?

This particular one's easy: it contains a meta tag with 21-Aug-2006 
in it.  Use Ctrl+U in Firefox or Konqueror to see the source text.

> A related point is how accurate is it to use the google advanced
> search and specify `last 3 mnths' or the like?

Zero.  Several times I've tried using it, but still pages and posts 
from 2005, 2004 and older show up.  It's useless.

Benno
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Re: [gentoo-user] [way OT] determining date of web pages

[Arturo 'Buanzo' Busleiman]

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Benno Schulenberg wrote:
>> Here is an example page:
>>  http://dvr.about.com/od/capturetvwithacomputer/ht/htnti.htm
>>
>> How can I tell quickly when this was written?

Well, just to add more ideas to this thread, you can always check the "Date" header returned by the
HTTP protocol after requesting that URL: (put this in one line)

buanzo@bbs ~ $ printf "GET /od/capturetvwithacomputer/ht/htnti.htm HTTP/1.0\nHost:
dvr.about.com\n\n" | nc dvr.about.com 80 | head |grep -E --color=yes ^Date
Date: Fri, 17 Nov 2006 12:06:52 GMT

(try removing the head and grep at the end, and replace by less, so you can see the headers and the
html in the request's body).

- --
Arturo "Buanzo" Busleiman - Consultor Independiente en Seguridad Informatica
Me caso este 1ro de diciembre: Lista de Casamiento Numero 37520 en todos los FRAVEGA!! :)
http://www.buanzo.com.ar | http://www.vivamoslavida.com.ar : Portal no-comercial del buen vivir!

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Re: [gentoo-user] [way OT] determining date of web pages

[Arturo 'Buanzo' Busleiman]

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Arturo 'Buanzo' Busleiman wrote:
> Well, just to add more ideas to this thread, you can always check the "Date" header returned by the

I forgot to mention that, depending on the web server, the date might have nothing to do with the
requested file... additionally, check all the headers, as some webservers do provide extra
informacion about a document.

In short: check the headers. Firefox + webdeveloper extension can show you the headers more easily.

- --
Arturo "Buanzo" Busleiman - Consultor Independiente en Seguridad Informatica
Me caso este 1ro de diciembre: Lista de Casamiento Numero 37520 en todos los FRAVEGA!! :)
http://www.buanzo.com.ar | http://www.vivamoslavida.com.ar : Portal no-comercial del buen vivir!

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=PTMt
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Re: [gentoo-user] [way OT] determining date of web pages

[Alan E. Davis]

Galeon (web browser) included "bookmarklets" (search google).  One
bookmarklet checks "page freshness".  It didn't work on frames, but
apparently there is a version that does work on frames.  I don't know
whether the bookmarklet is accurate, however.  Perhaps it uses methods
mentioned above to determine the date of inception of a page.

[<Blatant plug> Galeon is much faster for me than any other browser
for a number of reasons.  It was inevitable, therefore, that its
development has been discontinued.</Blatant plug>

Alan Davis

On 11/17/06, Arturo 'Buanzo' Busleiman <buanzo@buanzo.com.ar> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Arturo 'Buanzo' Busleiman wrote:
> > Well, just to add more ideas to this thread, you can always check the "Date" header returned by the
>
> I forgot to mention that, depending on the web server, the date might have nothing to do with the
> requested file... additionally, check all the headers, as some webservers do provide extra
> informacion about a document.
>
> In short: check the headers. Firefox + webdeveloper extension can show you the headers more easily.
>
> - --
> Arturo "Buanzo" Busleiman - Consultor Independiente en Seguridad Informatica
> Me caso este 1ro de diciembre: Lista de Casamiento Numero 37520 en todos los FRAVEGA!! :)
> http://www.buanzo.com.ar | http://www.vivamoslavida.com.ar : Portal no-comercial del buen vivir!
>
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.5 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
>
> iD8DBQFFXaa8AlpOsGhXcE0RAlEgAJ9xSxMODViFQCJYhcJkkQYuHnq5KgCeK/z2
> o+WYAwYLbaVyVdufKfCBnsM=
> =PTMt
> -----END PGP SIGNATURE-----
> --
> gentoo-user@gentoo.org mailing list
>
>


-- 
Alan Davis, Kagman High School, Saipan  lngndvs@gmail.com     1-670-256-2043

I consider that the golden rule requires that if I like a program I
must share it with other people who like it.
                                          --------Richard Stallman
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[gentoo-user] Re: [way OT] determining date of web pages

[reader]

"Arturo 'Buanzo' Busleiman" <buanzo@buanzo.com.ar> writes:

> printf "GET /od/capturetvwithacomputer/ht/htnti.htm HTTP/1.0\nHost:
> dvr.about.com\n\n" | nc dvr.about.com 80 | head |grep -E --color=yes ^Date
> Date: Fri, 17 Nov 2006 12:06:52 GMT

It appears your second post might be closer to right.  That the date
doesn't really reflect anything usefull.

Here I get:
      Fri, 17 Nov 2006 16:48:57 GMT

Appears to be updated but not related to content.

Thanks for the developer extension tip.

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[gentoo-user] Re: [way OT] determining date of web pages

[reader]

"Alan E. Davis" <lngndvs@gmail.com> writes:

> Galeon (web browser) included "bookmarklets" (search google).  One
> bookmarklet checks "page freshness".  It didn't work on frames, but
> apparently there is a version that does work on frames.  I don't know
> whether the bookmarklet is accurate, however.  Perhaps it uses methods
> mentioned above to determine the date of inception of a page.
>
> [<Blatant plug> Galeon is much faster for me than any other browser
> for a number of reasons.  It was inevitable, therefore, that its
> development has been discontinued.</Blatant plug>

Trying your pet I find I can't even import bookmarks and get the
expected result....
thumbs down  : )

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[gentoo-user] Re: [way OT] determining date of web pages

[Regis Decamps]

reader@newsguy.com wrote:

> How can I tell ahead of time or quickly what the vintage of a webpage
> that looks interesting is?
> 
> I often find when looking for some kind of consumer good like a DVR or
> something that the hot item I'm reading about was posted in 2004 after
> having spent a 1/2 hr reading to that point.
> 

I agree with other poster saying the resource headers may give you a 
date. Unfortunately, with dynamic page rendering (eg PHP), this can give 
you the current time.

That's why http://archive.org/ will actually give a better answer IMO.

-- 
Régis

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