Ok, let's narrow down the list to the document:

These groups provide users with direct access to various hardware components and system resources.

audio: Grants direct access to audio devices, such as sound cards and microphones. 🔊
brlapi: Provides access to Braille display devices through the BrlAPI (Braille Application Programming Interface), allowing applications to interact with Braille terminals.
disk: Allows direct, low-level access to storage devices like hard drives and USB drives. This is a powerful group, and members could potentially damage filesystems.
gpio: (General Purpose Input/Output) Grants access to the GPIO pins on a system, commonly used on single-board computers like the Raspberry Pi for interfacing with electronic components.
input: Grants read-only access to input devices like keyboards, mice, and joysticks, allowing applications to capture input events directly.
plugdev: (Pluggable Devices) Allows non-root users to mount and unmount removable storage devices like USB flash drives and external hard drives.
render: Provides direct rendering access to graphics hardware (GPUs). This is essential for applications like games and 3D modeling software to perform hardware-accelerated rendering. 🎮
spi: (Serial Peripheral Interface) Grants access to the SPI bus, a communication protocol used to interact with various hardware chips and sensors.
video: Grants access to video capture and output devices, such as webcams and the framebuffer of graphics cards. 📹

These groups are related to user permissions and privileges on the system.

users: A standard group that often serves as the default group for new users. Its permissions are generally set to allow members to access shared directories and files.
wheel: A special group that, particularly on older or BSD-derived systems, is used to control which users can use the su command to gain root privileges. On most modern Linux distributions, sudo is the preferred method for privilege escalation.

These groups manage networking and inter-process communication.

dbus: (Desktop Bus) Allows processes to communicate with each other. It is a fundamental part of modern Linux desktops for tasks like sending notifications or signalling hardware changes.
network: Can provide privileges related to managing network interfaces and connections, though its specific function can vary between distributions.
uucp: (Unix-to-Unix Copy) A legacy group related to the UUCP protocol for transferring files and sending email between Unix systems. It is not commonly used in modern systems.

These groups are typically created and used by specific applications or services to manage permissions.

docker: Allows a user to run Docker commands and manage Docker containers without needing to use sudo. Granting this permission is a security consideration, as it effectively provides root-level access to the host system. 🐳
nix-users: A group associated with the Nix package manager. Members of this group can install and manage software in the Nix store.
realtime: Allows processes started by its members to run with real-time scheduling priority. This is critical for applications that require very low latency, such as professional audio production software.

Document necessary groups on linux #55

Description