# Hummer12007/brightnessctl

A program to read and control device brightness

Repository: https://github.com/Hummer12007/brightnessctl
Canonical: https://ross.abutalabs.com/products/brightnessctl
Language: C
License: NOASSERTION
License Family: other
Topics: brightness, backlight, linux, wayland
Last push: 2024-12-16T23:46:22+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3810, "days_push": 625, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1257, forks 63 (observed 2026-08-28T04:04:09.335113+00:00)

## What it is
brightnessctl is a small C utility for reading and controlling device brightness on Linux, covering backlight and LED class devices. It works without sudo via udev rules, suid, or systemd-logind, and supports Wayland environments.

## Use cases
- change screen brightness from the command line
- adjust backlight on Wayland without sudo
- list available brightness devices
- dim or disable backlight on lid close
- script brightness changes with machine-readable output
- control LED brightness on Linux

## When to choose
- you need a lightweight CLI brightness control on Linux
- you use Wayland where traditional brightness tools fall short
- you want to script or hotkey brightness changes
- you need brightness control without running sudo each time

## When to avoid
- you need to control external monitor brightness without a DDC/CI kernel driver
- you need a GUI brightness slider
- you are on a non-Linux platform

## Facets
- artifact type: cli-tool
- maturity: stable
- function: cli, developer-tools
- domain: operating-systems, hardware
- platform: cli
- tags: backlight, brightness-control, wayland, led, system-utility, command-line, linux

## Member repositories
- Hummer12007/brightnessctl (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:09.335113+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:07:10.028078+00:00, confidence not recorded.
  - readme: https://github.com/Hummer12007/brightnessctl (fetched 2026-08-28T04:04:09.335113+00:00, sha 7335afcfde51)
- Data as of 2026-08-30T08:39:29.467469+00:00.