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Using groups in TrueNAS can be an efficient way of managing permissions for many similar user accounts. See users for managing users. The interface provides management of UNIX-style groups. If the network uses a directory service, import the existing account information using the instructions in Directory Services.
To see saved groups, go to Accounts > Groups
By default, groups that are built in to the system are hidden. To see built-in groups, click  : and SHOW.
Adding a New Group
To create a new group, go to Accounts > Groups and click ADD.
Each group is assigned a Group ID (GID). Enter a number above 1000 for a group with user accounts. The GID cannot be changed later. Groups used by a service must have an ID that matches the default port number used by the service.
Next, enter a descriptive name for the group.
Group names cannot begin with a hyphen (
-) or contain a space, tab, or these characters:
, : + & # % ^ ( ) ! @ ~ * ? < > =.
The dollar sign (
$) can only be used as the last character of the username.
By default, the Permit Sudo option is unset. When set, it allows group members to act as the root account by using sudo. It is recommended to leave this unset.
The option Samba Authentication is set by default. This option allows group members to be used for SMB permissions and authentication.
Finally, the Allow Duplicate GIDs option is unset by default. This allows groups to have duplicate group IDs. Leaving this option unset is recommended.
Group Member Management
After a group is created, user accounts can then be added or removed from the group. To manage existing group membership, go to Accounts > Groups, click , and MEMBERS.
To add user accounts to the group, select them from the list of All users and click . Multiple users can be selected by holding ctrl while clicking each user.
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