Users & Permissions

Graphical steps for creating another user account in GNOME Settings, including account type, password and parental controls.

Explains what sudo does, how to install it and add a user to the sudo group, and how to safely edit sudoers rules with visudo and /etc/sudoers.d.

Describes Debian's special system groups, how to list a user's groups and add members, and which groups (like disk or sudo) carry serious privileges.

Describes /etc/passwd, /etc/shadow and /etc/group, how to edit them safely, and the tools for changing, locking and disabling accounts and managing groups.