How to add user to another group in Ubuntu?
106783
Bionic - Group addition using usermod -aG doesn't take effect until the next reboot
30061
How should I add users non-interactively?
53476
How to give root power to another user
38693
Is there a command to list all users? Also to add, delete, modify users, in the terminal?
125708
How can I become active in the Ubuntu Community
144629
From command line on macOS, how to add a user group to the Sharing and Permissions list for a directory?
58077
How to Make Multi User Objects Single User?
39690
Logins aren't syncing across Availability Groups
133891
Cannot add a new user
67852
How do I set up new users with skel
26787
Precedence of user and group owner in file permissions
58523
Why is the output from `groups` different from `groups user` if Im currently logged in as user?
100812
How to remove a user from a group?
105614
Lost supplementary user groups for GUI login session
143872
How to force group ownership on samba share?
124273
Change user id and group id ownership of files within a tarball?
145528
priority of the Linux group & user