Dear bug-hunters, This message maybe totally useless but maybe a confirmation if similar received.
Chown gave an "Operation not permitted" "error" but seems to have worked as expected anyway. Maybe a system glitch or a chown bug so just fyi. Intention: change root:root to root:users on dir struct command: sudo chown -R root:users /run/media/user_name/long_disk_number/* ( so mounted through /run/media but an internal disk i.e. no external usb, or such ) chown went happily on its way but with a message in between: chown: changing ownership of ‘/run/media/rest_/of_/path_/filename ': Operation not permitted Puzzling, but no time to look into it immediately. After sys power off ( and later on again ) I did an "ls -hal" on that specific file: it had become root:users after all; surprisingly ! To check if I had not checked a wrong (rightly changed) filename I did a "find -not -group users" on the dir struct which did not come up with any ( by chown ) missed file, so all seems well after all. Also a replay of the command for that (already changed to root:users file) worked without no problem. Also2 changing that file to root:dialout and back again to root:users showed no problem. in conclusion: ??? background info: chown (GNU coreutils) 8.22 Best regards, A. Colijn