Actually, magika does tell you quite well what you need to know. .yjf could
be something comparable to a JPEG, .kfx seems to be very similar to a BMP
image. .meta seems to be just a JSON text file. .mf could be too, but at
least it will be a text file. The rest is unknown binary data you'll
probably have no way of handling, they will be proprietary. But of course
you can still try the magic bit variant, maybe that can tell you if someone
was already able to write something to handle it.
Am Fr., 28. Juni 2024 um 01:18 Uhr schrieb Van Snyder <
van.sny...@sbcglobal.net>:
> Thanks to Richard for the suggestion to try magika:
>
> # find ./ -type f -exec ~/.local/bin/magika {} \;
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.sdr/Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23bbd37f35b4b251f45c1bf42879a62d70.yjf:
> Unknown binary data (unknown) [Low-confidence model best-guess: JPEG image
> data (image), score=28]
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.sdr/data/.pagination.cache/887fcb7c:
> Unknown binary data (unknown) [Low-confidence model best-guess: PE
> executable (executable), score=71]
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.sdr/YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.mf:
> Generic text document (text) [Low-confidence model best-guess: JSON
> document (code), score=59]
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.sdr/Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23bbd37f35b4b251f45c1bf42879a62d70.yjr:
> Unknown binary data (unknown) [Low-confidence model best-guess: Intel 80386
> COFF (executable), score=76]
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.sdr/AssetDownloadMetadata.meta:
> JSON document (code)
> Whence-Energy-2_YI5JSRVWOVJ5MO6EWC57GJKTBZLXXI23.kfx: Unknown binary data
> (unknown) [Low-confidence model best-guess: BMP image data (image),
> score=89]
>
> So except for one file, it's still a mystery what e-mailing a PDF to a
> Kindle reader with "convert" (without quotes) in the subject actually
> produces. The Kindle reader can read it, but so far nothing else I've tried
> can. In the end, I want to edit it and re-publish it on Amazon.
>
>
