# cidr を Homebrew, apt, MacPorts でインストール

cidr 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:cidr
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install cidr
```

  証拠: local Homebrew formula metadata

- MacPorts (94%):

```sh
sudo port install cidr
```

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

### Linux

- Debian apt (92%):

```sh
sudo apt install cidr
```

  証拠: Debian stable package indexes: cidr from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz

## パッケージ情報

- **パッケージキー:** brew:cidr
- **パッケージマネージャ:** Homebrew
- **バージョン:** 2.3.0
- **ソース概要:** CLI to perform various actions on CIDR ranges
- **ホームページ:** <https://github.com/bschaatsbergen/cidr>
- **リポジトリ:** <https://github.com/bschaatsbergen/cidr>
- **最終更新:** 2026-07-27T22:04:00+02:00
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- cidr (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: 2.3.0
## プロジェクトの歴史と使われ方

cidr is a small Go command-line tool for inspecting, counting, checking, and subdividing IPv4 and IPv6 CIDR prefixes.

### プロジェクトの歴史

The GitHub repository was created in September 2022, and the first GitHub release followed that month. The README defines the tool around CIDR explanation, address containment, address counting, overlap checks, and division into smaller networks.

### 採用の歴史

The README documents Homebrew installation, Debian and Ubuntu packages for newer releases, and prebuilt binaries for Linux, macOS, and Windows. The batch input also records MacPorts packaging.

### 使われ方

Typical commands include explaining a CIDR range, testing whether an address belongs to a range, counting addresses, checking whether two prefixes overlap, and dividing a prefix into distinct networks. The README examples cover both IPv4 and IPv6.

### パッケージ好きにとっての重要性

cidr is package-nerd useful because it packages common subnet arithmetic into a simple cross-platform CLI, replacing shell snippets or ad hoc web calculators in scripts, package tests, and network automation.

### タイムライン

- 2022: Public GitHub repository and v0.1.0 release.
- 2023: v1.x releases established the CLI line.
- 2024: v2.0.0 released.
- 2025: v2.3.0 released.

### Related projects

- Related tools in this batch include cidr2range, cidrmerge, and IPinfo CLI's IP-range helper binaries.

### ソース

- <https://github.com/bschaatsbergen/cidr#readme>
- <https://api.github.com/repos/bschaatsbergen/cidr>
- <https://api.github.com/repos/bschaatsbergen/cidr/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

## 他のパッケージマネージャ記録

- Debian apt - cidr - 2.2.0-2+b9: normalized package name match | Debian stable package indexes: cidr from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | Simplifies IPv4/IPv6 CIDR network prefix management | https://github.com/bschaatsbergen/cidr
- MacPorts - cidr: normalized package name match | MacPorts ports tree: net/cidr/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/cidr.yml](https://github.com/mxcl/pkgdb/blob/main/combined/cidr.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