[Samba] Samba4 creating share and setting permissions without windows tools

[Diego Llovet]

Hello,

I need a way to set permissions to share folder without to use RSAT, I've
not found anything about that.

The samba wiki said that

---------------------
Change permissions on folders of a share


Changes of permissions are done using the classic *nix tools 'chmod',
'chown' and 'chgrp'.

Example:

 Code:

# mkdir /srv/samba/Demo/Example/
# chown foobar:DemoGroup /srv/samba/Demo/Example/
# chmod 2770 /srv/samba/Demo/Example/

-------------------

I created a group DemoGroup with "samba-tool group add DemoGroup"
Then, when I did
Code:

chown foobar:DemoGroup /srv/samba/Demo/Example/

I got this error
 Code:

chown: invalid group: "DemoGroup"

What must I do to allow groups created by samba-tool works with chown??

How can I do to assign permissions to a shared folder from command line
using the power of samba4?

Thank you in advance