Fwd: [darktable-user] .jpg file verifier

[Michael]

isn't that a linux thing? He's probab;y on windows which means he will
need to install cygwin or something similar first.
     https://itsfoss.com/run-linux-commands-in-windows/
then figure out how to install convert

On Sat, Apr 3, 2021 at 5:56 PM KOVÁCS István <k...@kovacs-telekes.org> wrote:
>
> One way to 'verify' the data is to decode the file. The following
> command will try to convert the JPG into PNM, but will not actually
> write the output file. If an error occurs, it'll be printed. E.g. for
> an intentionally corrupted file:
> kofa@eagle:~$ convert /tmp/test.jpg -format pnm - >/dev/null
> convert-im6.q16: Corrupt JPEG data: premature end of data segment
> `/tmp/test.jpg' @ warning/jpeg.c/JPEGWarningHandler/386.
>
> You can get 'convert' from ImageMagick or from GraphicsMagick.
>
> Kofa
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