What is the default group in Ubuntu?

group sudo
By default, the initial user created by the Ubuntu installer is a member of the group sudo which is added to the file /etc/sudoers as an authorized sudo user. If you wish to give any other account full root access through sudo, simply add them to the sudo group.

What is the default user group in Linux?

primary group
A user’s primary group is the default group the account is associated with. Directories and files the user creates will have this Group ID. A secondary group is any group(s) a user is a member of other than the primary group.

What group are users automatically added to in Ubuntu?

By default, system users are placed in the nogroup group. To place the new system user in an already existing group, use the –gid or –ingroup options.

What is Plugdev group?

plugdev: Allows members to mount (only with the options nodev and nosuid, for security reasons) and umount removable devices through pmount. netdev: Members of this group can manage network interfaces through the network manager and wicd.

Which groups belong to an user in Linux?

There are two types of groups in Linux: Primary Group: The primary group is the main group associated with the user account. Each user must be a member of a single primary group. Secondary Group: The second group is used to grant additional rights to the user. Each user can become a member of a multiple secondary group.

How do you add user in group in Linux?

Only root or users with sudo access can add a user to a group. To add an existing user to a secondary group, use the usermod -a -G command followed the name of the group and the user: For example, to add the user linuxize to the sudo group, you would run the following command: Always use the -a (append) option when adding a user to a new group.

How to manage users with groups in Linux?

How To Manage Groups And Users On Linux Create New Groups. Creating new groups isn’t something many users do, as most Linux distributions don’t need it. Delete Groups. If you have no use for a certain group on your Linux PC, it’s a good idea to delete it. Add/Remove Users To Groups. To add existing users to a newly created group, you’ll need to make use of the usermod command. Manage Users.

Can user have multiple groups on Linux?

A user can be a member of one primary and one or several secondary (supplementary) groups in Linux. The file ‘/etc/group’ defines group membership for each user in the Linux system.