# brightness を Homebrew, MacPorts でインストール

brightness のインストール経路、実行ファイル、メタデータ、AI エージェント向けセキュリティノートを確認します。

## インストール

```sh
sudo av install brew:brightness
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install brightness
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install brightness
```

  証拠: MacPorts ports tree: sysutils/brightness/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1

## パッケージ情報

- **パッケージキー:** brew:brightness
- **パッケージマネージャ:** Homebrew
- **バージョン:** 1.2
- **ソース概要:** Change macOS display brightness from the command-line
- **ホームページ:** <https://github.com/nriley/brightness>
- **リポジトリ:** <https://github.com/nriley/brightness>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- brightness (エイリアス)

## インストール挙動

- Bottle: 利用不可

## バージョンと鮮度

- ページ生成日: 2026-08-03
- マネージャ版: 1.2
## プロジェクトの歴史と使われ方

brightness is a macOS command-line utility for reading and setting display brightness from scripts or the terminal.

### プロジェクトの歴史

The nriley/brightness repository was created in February 2014, with release 1.2 published in August 2015. The README describes a focused utility for controlling all internal and some external displays from the command line.

Its maintenance history mirrors macOS display API changes. The README notes that documented APIs worked through macOS 10.12.3, then Night Shift in 10.12.4 required an undocumented method, and Apple Silicon Macs later required another undocumented method.

### 採用の歴史

brightness became a durable small utility for macOS automation users. It is packaged in Homebrew and MacPorts according to the input package facts, has hundreds of GitHub stars, and Homebrew analytics reported several thousand installs over the prior year at lookup time.

### 使われ方

Users run simple commands such as `brightness 1`, `brightness 0.5`, or `brightness -l` to set or list display brightness. The README cautions that displays not controllable through macOS Displays settings generally cannot be controlled by the tool either.

### パッケージ好きにとっての重要性

brightness is the archetypal tiny macOS system utility package: a single-purpose binary that exists because shell scripts and automation tools need access to a GUI-era hardware setting. Its significance is not breadth, but longevity across changing macOS display internals.

### タイムライン

- 2014: Repository created.
- 2015: Release 1.2 published.
- 2017: README documents the macOS 10.12.4 Night Shift-era API break and workaround.
- 2021: Repository history includes Universal 2 build work for Apple Silicon.
- 2026: Homebrew stable version reported as 1.2.

### Related projects

- Homebrew and MacPorts distribute brightness for macOS users.
- macOS display APIs and IOKit-style display enumeration are the system interfaces around which the utility operates.
- Shell scripts, launch agents, and automation workflows are common consumers of this kind of command-line brightness control.

### ソース

- <https://formulae.brew.sh/api/formula/brightness.json>
- <https://github.com/nriley/brightness>
- <https://raw.githubusercontent.com/nriley/brightness/master/README.md>
- source_facts.package-manager


## セキュリティノート

narrow executable package without higher-risk signals.

- **Geiger リスク:** グリーン / 低
- narrow executable package without higher-risk signals

## 他のパッケージマネージャ記録

- MacPorts - brightness: normalized package name match | MacPorts ports tree: sysutils/brightness/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1


## Combined YAML source

View the package source record on GitHub. [combined/brightness.yml](https://github.com/mxcl/pkgdb/blob/main/combined/brightness.yml)


## ソース

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- external package-manager database matches
- cross-ecosystem install command graph