Can't chmod +g on a directory

[Colin Law]

On Tue, 15 Oct 2024 at 16:21, Steve Matzura <sm at noisynotes.com> wrote:
>
> "jim" and "bob" are two directories in /home owned by root and in the root group. They both have subdirectories called uploads. /home/jim/uploads is owned by jim in the jim group and has protection mask 755 (drwx-rx-rx). /home/bob/uploads is owned by bob but in another group entirely, and its protection mask is 774 (rwxrwxr--). I want to change /home/jim/uploads to the same permissions as /home/bob/uploads, but whenever I "sudo chmod +g /home/jim/uploads", nothing happens.

chmod is just for setting the permissions for the group that owns the
file.  If you want to change the group you have to use chown.

Colin L.