Samba quick question

Hallo I have a Samba server running in my Lan (mainly for file and print service). This server will act as a PDC (don’t ask why…).
So, I have a question: Under a share I can use the “read list” and “write list” options with groups (eg @users). Is that group a Linux or Samba group? If it’s the later, am I forced to use the net groupmap command, or it is sufficient to have a group name in the /etc/group file? Should I add samba/linux users to that group (with net rpc) or is sufficient to have the group membership set in the linux?
Thank you

You might get a better understanding of “@group” (which really ought to be expressed “+group”) by reading the segment Special Purpose Modifications for Enhanced Privacy and/or Security in this tutorial: Samba Server and Suse / openSUSE: HowTo Configure a Professional File Server on a SOHO LAN

Apart from that, read also the segments “valid users”, “read list” and “write list” in the file smb.conf here: link to smb.conf

You can reference Linux groups as you say with the @ symbol. So @users or whatever. The users though to be able to access those share rights must be samba users, either local in or in ldap.

Yes, I know about the users. The question was about the groups. Because from the Samba documentation is not clear. Thank you for your answer.

What do you mean by “+group”? I haven’t see that before… :\