unix folx: i have two directories of about 70k files each and i want to diff them at file granularity such that the diff output goes into a new directory as a "patch" applied onto the newer directory. how do this

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they're binary files, i don't mean .patch patch, i mean "here's a directory of all the files that are different in the newer directory compared to the older directory"

@shaderphantom oh, uh, to get a list of files that differ you'd want

diff -qr

not at a computer rn to figure out how turn that into an actual directory structure srry

@bossposs this is actually the perfect building block, ty

@bossposs welp, nevermind, that only gives a diff on existence, not whether the content changed

@shaderphantom @bossposs For differences and patches on binary files, you probably want to use xdelta, not diff.
I have never used it, so I can't tell you more about it or if it meets your needs.

@Feufochmar @bossposs xdelta won't work because the files are compressed and double encrypted (yes.)

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