# jenv を Homebrew, MacPorts, pacman, scoop でインストール

jenv 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:jenv
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install jenv
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install jenv
```

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

### Linux

- pacman (92%):

```sh
sudo pacman -S jenv
```

  証拠: Arch Linux sync databases: jenv from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

### Windows

- Scoop (92%):

```sh
scoop install extras/jenv
```

  証拠: Scoop official bucket manifest trees: bucket/jenv.json from https://api.github.com/repos/ScoopInstaller/Extras/git/trees/master?recursive=1

## パッケージ情報

- **パッケージキー:** brew:jenv
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.6.0
- **ソース概要:** Manage your Java environment
- **ホームページ:** <https://github.com/jenv/jenv>
- **リポジトリ:** <https://github.com/jenv/jenv>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- jenv (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: 0.6.0
## プロジェクトの歴史と使われ方

jenv is a shell-oriented Java environment manager. Its README describes it as an updated fork of jenv adapted from rbenv, focused on switching Java versions and setting JAVA_HOME at global, directory-local, or per-shell scope without installing Java itself.

### プロジェクトの歴史

The public GitHub repository for jenv was created in 2013. The project documentation names Gildas Cuisinier as maintainer and frames the repository as a continuation of an earlier beloved Java environment manager rather than a from-scratch package installer.

The release stream visible on GitHub shows a compact Unix shell tool that continued to receive maintenance releases through the 0.5.x and 0.6.x series. Release notes for 0.6.0 include fixes around shim behavior, shell support, install instructions, and the addition of a command for selecting a Java version for one command invocation.

### 採用の歴史

jenv became useful in Java shops because the JDK landscape is fragmented: Android, server, build, and legacy projects often require different Java majors on the same developer machine. Its README explicitly calls out Android tools using Java 8 while server applications use later releases, which explains its fit with project-local version files.

Homebrew, MacPorts, pacman, and Scoop package metadata in the input show that jenv escaped a single-source install workflow and became a cross-package-manager convenience for developers who already install JDKs through their platform tooling.

### 使われ方

A typical jenv workflow is to install the shell hooks, add already-installed JDK homes with `jenv add`, enable the export plugin when JAVA_HOME management is desired, and use `jenv global`, `jenv local`, or `jenv shell` to select the active version. `jenv local` writes a `.java-version` file in the working tree.

### パッケージ好きにとっての重要性

jenv matters to package-manager users because it deliberately does less than SDKMAN-style installers: it manages shims and environment selection, while Homebrew or the operating system installs Java. That separation makes it a small glue package with outsized value on machines that carry several vendor and versioned JDKs.

### タイムライン

- 2013: Public GitHub repository created for jenv/jenv.
- 2020: GitHub release 0.5.3 appears in the release stream.
- 2025: GitHub release 0.6.0 records shim, install, and shell-support maintenance.

### Related projects

- The README explicitly traces jenv's style to rbenv. It also sits beside Homebrew, MacPorts, SDKMAN-style Java installers, and vendor OpenJDK packages rather than replacing them.

### ソース

- <https://api.github.com/repos/jenv/jenv>
- <https://formulae.brew.sh/formula/jenv>
- <https://github.com/jenv/jenv>
- <https://github.com/jenv/jenv/releases>


## 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


## Configuration and credential file locations

These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval.


## Configuration files

- Unix: ./.java-version
## 他のパッケージマネージャ記録

- pacman - jenv - 0.6.0-1: normalized package name match | Arch Linux sync databases: jenv from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | Manage your Java environment | https://github.com/jenv/jenv
- MacPorts - jenv: normalized package name match | MacPorts ports tree: java/jenv/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1
- Scoop - extras/jenv: normalized package name match | Scoop official bucket manifest trees: bucket/jenv.json from https://api.github.com/repos/ScoopInstaller/Extras/git/trees/master?recursive=1


## Combined YAML source

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


## ソース

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