you may have an attribute (immutable) set. Try 'man chattr'. HTH

On Tuesday, October 24, 2023, Fred <fred@???> wrote:

> Hello,
>
> I have some files on a NAS box that have funky permissions that prevent
> access to them. They can't be read by xpdf or others.
>
> root@ragnok:/home/fred# ls -l /mnt/dns321/pdf_6/ELCON_UL9_cap.pdf
> -rw------- 1 501 501 451089 Feb 17 2009 /mnt/dns321/pdf_6/ELCON_UL9_ca
> p.pdf
>
> root@ragnok:/home/fred# chown fred /mnt/dns321/pdf_6/ELCON_UL9_cap.pdf
> chown: changing ownership of '/mnt/dns321/pdf_6/ELCON_UL9_cap.pdf':
> Permission denied
>
> root@ragnok:/home/fred# chmod 664 /mnt/dns321/pdf_6/ELCON_UL9_cap.pdf
> chmod: changing permissions of '/mnt/dns321/pdf_6/ELCON_UL9_cap.pdf':
> Permission denied
>
> How to force change of permissions and/or ownership?
>
> Best regards,
> Fred
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