Available User Privileges
Although the privileges discussed in this section are partially administrative in nature, they relate to privileges that users may want on regular workstations. The permissions in question support access to hardware such as modems, sound cards, printers, and scanners.
On Ubuntu distributions, user privileges to special hardware are implemented through group memberships. While those groups are listed in /etc/group, a clearer description is available in the Ubuntu Users Settings tool, accessible in the GUI with the users-admin command. If you don’t have this utility installed, it is in the gnome-system-tools package, which can be added after the installation. Figure 4-1 shows the group listing in this utility.
FIGURE ...
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