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Re: [Bug-wget] Problem using GNU Wget 1.11.4 Windows version


From: Anthony Bryan
Subject: Re: [Bug-wget] Problem using GNU Wget 1.11.4 Windows version
Date: Mon, 19 Mar 2012 12:19:35 -0400

On Sun, Mar 18, 2012 at 6:24 PM, JD <address@hidden> wrote:
> When using wget with the -c option, it does recover and resume the download
> after network failures. However, after it finishes the download (in my case
> downloading
> Fedora-16-i386-DVD.iso), I run the sha256sum on the downloaded ISO and it is
> completely different to the value stored in the file of CHECKSUMS on the
> same
> page URL - http://mirrors.kernel.org/fedora/releases/16/Fedora/i386/iso/
>
> I downloaded this iso at least twice, with the same result - the sha256sum
> performed on the file does not match the one at the above URL, and nor
> does it match the result of sha256sum performed on the previous downloads
> of the iso file.
>
> So, something is not right with wget!!

JD, errors can pop up in a number of places during the download process.

there are 3 things you can do to fix the download: rsync, bittorrent,
or metalink.

using the latest version of wget is always better than not, but you
can't fix this download with wget. (by that, I mean if you've kept the
error file & not deleted it).
wget will be fine if no errors occur, but the larger the download the
more likely you are to run into an error (probably). & you have
already gotten errors at least twice.

many Linux distributions use metalink or bittorrent for these large
ISO downloads to correct errors & for other features like mirror
usage.

I would suggest using aria2 & the attached metalink file. aria2 is a
command line downloader like wget.

Fedora already provides metalinks for all their files, but
unfortunately they don't include all the repair information, just the
sha256sum to detect errors.

http://mirrors.fedoraproject.org/metalink?path=pub/fedora/linux/releases/16/Fedora/i386/iso/Fedora-16-i386-DVD.iso

-- 
(( Anthony Bryan ... Metalink [ http://www.metalinker.org ]
  )) Easier, More Reliable, Self Healing Downloads

Attachment: Fedora-16-i386-DVD.iso.meta4
Description: Binary data


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