# bas55 を Homebrew でインストール

bas55 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:bas55
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install bas55
```

  証拠: local Homebrew formula metadata

## パッケージ情報

- **パッケージキー:** brew:bas55
- **パッケージマネージャ:** Homebrew
- **バージョン:** 2.0
- **ソース概要:** Minimal BASIC programming language interpreter as defined by ECMA-55
- **ホームページ:** <https://jorgicor.niobe.org/bas55/>
- **最終更新:** 2026-06-13T01:03:14+02:00
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- bas55 (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: 2.0
## プロジェクトの歴史と使われ方

bas55 is a small implementation of ECMA-55 Minimal BASIC. It provides a command-line interpreter and editor with line renumbering, aiming to preserve and test the standardized subset of BASIC rather than extend it into a modern dialect.

### プロジェクトの歴史

The official manual identifies bas55 as an ECMA-55 Minimal BASIC System and documents version 2.0, updated on 6 May 2023. The project homepage hosts the current 2.0 source, Windows package, online manual, NEWS file, older source archives back through 1.01, and a link to the GitHub source repository.

The NEWS file shows active development across the mid-2010s through 2023. Much of that history is conformance work: fixing parsing, numerical behavior, editor behavior, and bundled National Bureau of Standards test cases so the interpreter behaves consistently across systems.

### 採用の歴史

bas55 is niche by design, but it is packaged by Homebrew according to the input metadata, and the official homepage provides source and Windows builds directly. Its audience is people who want a portable ECMA-55 environment, not people looking for a general BASIC with graphics or platform-specific extensions.

The homepage also points users to John Gatewood Ham's ECMA-55 compiler and learning materials, placing bas55 inside a small ecosystem of Minimal BASIC preservation and education tools.

### 使われ方

Users start bas55 at the command line and enter numbered BASIC lines in editor mode, then run, list, save, load, and renumber programs. The manual's tutorial begins with the traditional two-line HELLO, WORLD program and documents ECMA-55 restrictions such as upper-case program text and required END statements.

There is no documented persistent configuration file or credentials store; usage is interactive or file-based through the interpreter and editor.

### パッケージ好きにとっての重要性

bas55 matters to package nerds because it is a tiny language runtime whose value is standards fidelity. It packages an old standardized programming environment as a modern CLI, with bundled tests and changelog entries focused on portability and repeatable behavior.

It is also a good example of long-tail Homebrew content: not a mainstream runtime, but a preserved computing artifact that becomes easy to install with one command.

### タイムライン

- 2015: NEWS entries show active conformance and portability work on the interpreter.
- 2018: Project website moved to jorgicor.niobe.org and libedit support was documented.
- 2020: Numeric behavior was made more consistent across platforms and tests.
- 2023: Version 2.0 changed the project license to GPLv3-or-later and added GNU Readline support.
- 2023: The official manual was updated for bas55 2.0.

### Related projects

- ECMA-55 is the Minimal BASIC standard implemented by bas55.
- The official homepage links to John Gatewood Ham's ECMA-55 Minimal BASIC compiler and learning material as related software and documentation.
- The National Bureau of Standards Minimal BASIC test programs are referenced by the homepage and NEWS file as a conformance resource.

### ソース

- <https://github.com/jorgicor/bas55>
- <https://jorgicor.niobe.org/bas55>
- <https://jorgicor.niobe.org/bas55/NEWS>
- <https://jorgicor.niobe.org/bas55/bas55.html>
- source_facts.package-manager


## セキュリティノート

generalized runtime or code generation signal.

- **Geiger リスク:** yellow / 中
- generalized runtime or code generation signal


## Combined YAML source

View the package source record on GitHub. [combined/bas55.yml](https://github.com/mxcl/pkgdb/blob/main/combined/bas55.yml)


## ソース

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