How do I change my primary group in Linux?
- Create a New User: useradd or adduser.
- Get User ID and Groups Information: id and groups.
- Change the Primary Group of a User: usermod -g.
- Add or Change Users in Secondary Groups: adduser and usermod -G.
- Create or Delete a Group in Linux: groupadd and groupdel.
How find primary and secondary group in Linux? There are multiple ways to find out the groups a user belongs to. The primary user’s group is stored in the /etc/passwd file and the supplementary groups, if any, are listed in the /etc/group file. One way to find the user’s groups is to list the contents of those files using cat , less or grep .
What is the default group in Linux? The two main types of groups are primary groups and secondary groups. 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.
How do I manage users and groups in Linux?
- adduser : add a user to the system.
- userdel : delete a user account and related files.
- addgroup : add a group to the system.
- delgroup : remove a group from the system.
- usermod : modify a user account.
- chage : change user password expiry information.