# yj を Homebrew, apk, MacPorts, Nix でインストール

yj 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:yj
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install yj
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install yj
```

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

### Linux

- apk (92%):

```sh
sudo apk add yj
```

  証拠: Alpine Linux edge package indexes: yj from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz

- Nix (92%):

```sh
nix profile install nixpkgs#yj
```

  証拠: nixpkgs package indexes: pkgs/by-name/yj/yj/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

## パッケージ情報

- **パッケージキー:** brew:yj
- **パッケージマネージャ:** Homebrew
- **バージョン:** 5.1.0
- **ソース概要:** CLI to convert between YAML, TOML, JSON and HCL
- **ホームページ:** <https://github.com/sclevine/yj>
- **リポジトリ:** <https://github.com/sclevine/yj>
- **最終更新:** 2026-07-25T21:32:49+02:00
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- yj (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: 5.1.0
## プロジェクトの歴史と使われ方

yj is a Go command-line converter between YAML, TOML, JSON, and HCL. Its defining package-nerd feature is preserving map order across conversions, a detail that matters when config files need to remain readable or diffable.

### プロジェクトの歴史

The project was published in March 2017 and reached v1.0 immediately. Its release line then expanded through v2.0 in 2018, v3 and v4 in 2019, and v5 in 2020-2022 as the supported format libraries and conversion semantics matured.

The v5.0.0 release notes mark the major turning point: conversions between all formats began preserving map order, TOML moved to a 1.0 release candidate, YAML moved to yaml.v3, and the maintainer noted that order preservation required manually parsing library ASTs. v5.1.0 updated TOML support to TOML 1.0.0 and adjusted the Go module path.

### 採用の歴史

yj is adopted by users who need shell-friendly data-format conversion without writing one-off scripts. The README documents Homebrew installation, release binaries for macOS, Linux, and Windows, a Docker image, and use as Go packages for converting data formats into ordered Go objects.

### 使われ方

The yj CLI reads from stdin and uses compact two-letter flags to choose source and destination formats, such as YAML to JSON, JSON to YAML, TOML to HCL, or HCL to JSON. It also includes options for JSON indentation, HTML escaping, YAML key parsing, and NaN/Inf handling.

### パッケージ好きにとっての重要性

yj matters because it lives in the config-file conversion niche where jq, yq, hcl tools, and ad hoc scripts overlap. For package catalogs, it is a clean example of a small executable that bridges infrastructure formats rather than owning one format ecosystem.

Order preservation is its standout detail: many converters can translate syntax, but fewer try to preserve human-authored map order across YAML, TOML, JSON, and HCL.

### タイムライン

- 2017-03: Repository created and v1.0 released.
- 2018-06: v2.0 released.
- 2019-01: v3.0 and v3.1.0 released.
- 2019-05: v4.0.0 released.
- 2020-07: v5.0.0 adds map-order preservation across all formats.
- 2022-04: v5.1.0 updates TOML support to 1.0.0 and module path to v5.

### Related projects

- YAML, TOML, JSON, and HCL: the four formats yj converts among.
- jq and yq-style tools: neighboring command-line data transformation tools.
- HashiCorp HCL: infrastructure configuration format supported by yj.

### ソース

- <https://api.github.com/repos/sclevine/yj - repository creation date and description.>
- <https://api.github.com/repos/sclevine/yj/releases - release tags and publication dates.>
- <https://api.github.com/repos/sclevine/yj/releases/tags/v5.0.0 - order-preservation release notes.>
- <https://api.github.com/repos/sclevine/yj/releases/tags/v5.1.0 - TOML 1.0.0 and Go module path release notes.>
- <https://github.com/sclevine/yj - README describes supported formats, flags, installation, Docker image, and Go package use.>


## 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

- Nix - yj: normalized package name match | nixpkgs package indexes: pkgs/by-name/yj/yj/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- apk - yj - 1.2.4-r0: normalized package name match | Alpine Linux edge package indexes: yj from https://dl-cdn.alpinelinux.org/alpine/edge/community/x86_64/APKINDEX.tar.gz | Command line tool that converts YAML to JSON | https://github.com/bruceadams/yj
- MacPorts - yj: normalized package name match | MacPorts ports tree: textproc/yj/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/yj.yml](https://github.com/mxcl/pkgdb/blob/main/combined/yj.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