Do you use PAR files when downloading binaries from Usenet?

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BKoT
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Post by BKoT » 01/02/02, 10:44 am

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On 2002-01-02 17:44, bob wrote:
Only thing is--I don't know if I can explain it. This thread'll help a lot though.
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You can send a note to the author (midnight@fluidstudios.com) and he can give you a good, concise explanation to use (he's good at that) or just pull some info from the website. http://www.fluidstudios.com/fsraid.html
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bob
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Post by bob » 01/02/02, 1:05 pm

Will do--thanks for posting and for taking the time to explain... Much appreciated.

Gerry
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Post by Gerry » 01/02/02, 5:31 pm

Firstly I have gotta say WOW, it certainly does seem like magic. At first I totally didn't understand the concept, but once explained it seems amazing and an incredible time saver. Thanx for all the explinations.

<b>Bob</b>, I believe you can't really explain it fully in the daily update, unless you use the word magic many times over. However after reading the sentance below on the FSRaid site, I now believe that we are trying to understand the wrong thing. I think our answers lie (at least initally) in how the rar file format works...

"<i>PAR files contain very rigorous fingerprinting data on the original file set, so with a tool like FSRaid, you can accurately determine which of your original files is valid, which are corrupt, etc.</i>"

...<b>BKoT</b>, please let me know if I'm wrong, and if so would it work with split zip files or any other type of split file?
I answer rhetorical questions for my own enjoyment.

BKoT
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Post by BKoT » 01/03/02, 2:20 am

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On 2002-01-03 01:31, Gerry wrote:
I think our answers lie (at least initally) in how the rar file format works...

"<i>PAR files contain very rigorous fingerprinting data on the original file set, so with a tool like FSRaid, you can accurately determine which of your original files is valid, which are corrupt, etc.</i>"

...<b>BKoT</b>, please let me know if I'm wrong, and if so would it work with split zip files or any other type of split file?

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The beauty of using par files is that, no, it isn't <u>required</u> that you build them against sets of rar files. Rar seems to have become the standard in the newsgroups for posting binaries, and it was in the newsgroups where the par concept really took off, so it just seems that par needs rar to exist.

You can build par sets against <b>any</b> groups of files. If you wanted to, you could build a par set against the entire contents of c:Windows, just remembering that each file in that par set will be as large as the largest file in the folder. In my case, I've got 383 files in that folder, the largest one being 94 meg. With that many files, a 10% ratio works out to 39 files, each of which would end up being 94 meg in length. Now, creating 3.6 gig of new files is pretty dumb, and I wouldn't expect anyone to actually do that. <IMG SRC="/phpBB/images/smiles/icon_smile.gif">

My point is, files to create par sets for don't <i>need</i> to be groups of split files, but the concept works best when the groups <i>are</i> split files only because all of the files (except for one usually) are the exact same size.
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Post by Gerry » 01/03/02, 3:48 am

Wow, well in that case I truely am baffled and I'm going to have to reasearch into how par files work or it will never stop bugging me.

So anyway.. which do you like better Par files or lemurs? <IMG SRC="/phpBB/images/smiles/icon_smile.gif">
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Post by BKoT » 01/03/02, 4:09 am

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On 2002-01-03 11:48, Gerry wrote:

So anyway.. which do you like better Par files or lemurs? <IMG SRC="/phpBB/images/smiles/icon_smile.gif">

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<IMG SRC="/phpBB/images/smiles/icon_lol.gif"> Oh, definately lemurs. Par files are handy and all, but lemurs are just so cool. <IMG SRC="/phpBB/images/smiles/icon_smile.gif">
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