On 14/06/18 13:23, Dennis Lee Bieber wrote:
> On Thu, 14 Jun 2018 12:04:01 +0100, RobH  declaimed the
> following:
>
>> pi@raspberrypi:/mnt $ sudo chown -R 777 /mnt/CCTV
>
>  Unless you have a user named "777" those parameters are wrong.
> http://www.linfo.org/chown.html
> """
>   The basic syntax for using chown to change owners is
>
>      chown [options] new_owner object(s)
> """
>
>
>> drwxr-xr-x 3 777 root 4096 Jun  5 09:50 CCTV
>                ^^^ ^^^^
>
> ^^^ user name
> ^^^^ group name
>
>  Try
>
> chown -R pi /mnt/CCTV
>
>  Or (untried) create a new group (call it NASuser), chown the mount
> point to that group, and then add pi user to the new group.
>
>
>  That 777 looks like you are trying to set permission levels (the rwx
> stuff you see on the left). That command is chmod
>
https://www.linode.com/docs/tools-reference/tools/modify-file-permissions-with-
chmod/
>
>
>
>

I have changed 777 to 775.

The reason I used it was because I didn't want any problems with no
permissions either writing the file to my NAS box and viewing the file
as a user

chown -R pi /mnt/CCTV
returns this:

chown: changing ownership of '/mnt/CCTV/PiZero/dht.cpp': Operation not
permitted
chown: changing ownership of
'/mnt/CCTV/PiZero/2018-06-14_10.12.34.h264': Operation not permitted
chown: changing ownership of
'/mnt/CCTV/PiZero/2018-050-23_17.m%.19.h264': Operation not permitted

I used sudo chmod without any errors.

Using this eample, does the group have to be named, as in g= name of group??

chmod -R +w,g=rw,o-rw, ~/group-project-files/

I'l have to buy a book on this subject before I can go any further with it.
I did hope that google would give the answer, but yet.

Thanks

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