On Thu, 1 Nov 2007, Bruno Wolff III wrote:
On Wed, Oct 31, 2007 at 13:19:40 -0600,
Robin Laing <Robin.Laing@xxxxxxxxxxxxxxx> wrote:
True but rar will also create parity blocks to check and repair the
split files.
I find it difficult to believe that this is the right place to introduce
redundancy. Including a hash with each part so that you can detect broken
ones is useful. Sending out multiple copies seems like a waste of bandwidth.
And if you really want to do this, wouldn't it be easier to just post them
multiple times?
His description is not correct.
Rar is a compression scheme. The parity blocks are created by a different
tool. The advantage to rar is that it will split into multiple files, as
well as handle long file names and all the other features that modern
compression users want. It has checksums to determine damage, but not
recovery information. For that you use par2.
I use unrar and par2cmdline and they work fine. (With the exception of
the rare damaged par file. Moving to a different par recovery tool
usually solves that problem.)
--
Q: Why do programmers confuse Halloween and Christmas?
A: Because OCT 31 == DEC 25.
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