Re: xorriso and the "-md5 on" option
On Sat, 21 Dec 2019 20:34:42 +0000
Brian <ad44@cityscape.co.uk> wrote:
I trust you have already pulled in and used the checksum file(s) for the
iso itself. If those fail to verify, there isn't much point in
proceeding.
> I am extracting files from a Debian ISO as follows:
>
> xorriso -osirrox on -md5 on -indev debian-10.2.0-i386-DVD-10.iso
> -extract pool/main test/
xorriso strikes me as a bit of overkill. I usually just mount the iso
image and treat it as a read-only file system. But as long as it
works for you... .
The first thing I do after mounting it is verify the checksums in situ
in the image. Something like:
mount foo.iso /mnt
cd /mnt
shaXXXsum --q -c filename.shaXXXsums
>
> Will the files in test/ have the same md5sum as the ones in the ISO?
> Obviously, I am looking to obtain uncorrupted files.
>
> What will the output show if there is a problem with extraction?
>
Each the output line for each file that fails will have the word FAIL
in all caps. You can use the --quiet option (--q for short) to have the
program spit out only problematic results.
--
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https://charlescurley.com/blog/
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