ToolsUser ManagementOn this pageUser ManagementUser and Permission Management who List of active users passwd whoami - active user group create group list of groups a user in How to create a user https://linuxize.com/post/how-to-create-users-in-linux-using-the-useradd-command/ Password, password directory and Shell /etc/passwd User without a group Not possible. a group with the username is created. https://askubuntu.com/questions/853399/can-we-have-a-user-without-a-primary-group