On Sat, 21 Dec 2019 23:10:45 +0000 Brian <a...@cityscape.co.uk> wrote:
> Basically, I want to compare the MD5sum (or shaXXXsum) for each > file in the ISO with the MD5sum for each extracted file. Either > during extraction or afterwards. Why? You said earlier, > Will the files in test/ have the same md5sum as the ones in the ISO? > Obviously, I am looking to obtain uncorrupted files. It's only on final delivery, after you've extracted the individual files, that you really care about their integrity. If you get two different checksums for the same file you know you have a problem, but not where it is. (Although the chances of extracting a corrupt file and having it fixed is vanishingly small.) The main reason to verify the files earlier is to save you the time and effort of further extraction before you can test them. You mentioned using jigdo. Doesn't jigdo verify each file as jigdo pulls it in? I think the process of pulling in the packages would have the greatest chance of corruption, not building the ISO images or extracting from them. I don't know what you're up to, but you might look into apt-cacher or apt-cacher-ng (I use the latter) as an alternative to jigdo, and let apt handle the whole checksum effort. -- Does anybody read signatures any more? https://charlescurley.com https://charlescurley.com/blog/
