# ipinfo を Homebrew, Nix, winget でインストール

ipinfo 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:ipinfo
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install ipinfo
```

  証拠: local Homebrew formula metadata

### Linux

- Nix (92%):

```sh
nix profile install nixpkgs#ipinfo
```

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

### Windows

- winget (92%):

```sh
winget install --id ipinfo.ipinfo -e
```

  証拠: Windows Package Manager source index: ipinfo.ipinfo from https://cdn.winget.microsoft.com/cache/source.msix

## パッケージ情報

- **パッケージキー:** brew:ipinfo
- **パッケージマネージャ:** Homebrew
- **バージョン:** 1.2
- **ソース概要:** Tool for calculation of IP networks
- **ホームページ:** <https://kyberdigi.cz/projects/ipinfo/>
- **生成日時:** 2026-08-03T19:37:03+00:00

## 実行可能ファイル

- ipmatch (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

Kyberdigi ipinfo is a small C utility for IPv4 network calculations, accompanied by `ipmatch` for checking whether an address belongs to a subnet or represents a network or broadcast address.

### プロジェクトの歴史

The official Kyberdigi page describes ipinfo as a Linux-first C program for calculating network address, broadcast address, wildcard address, prefix length, usable host ranges, and address counts from an IP address and mask.

The project page lists version 1.0 in 2004, version 1.1 in 2013, and version 1.2 in 2014. It also records a license change: version 1.0 under the GPL, and version 1.1 and later under the Beerware license.

### 採用の歴史

The package is obscure but durable: its value is the classic Unix shape of a tiny calculator binary plus a companion matcher, easy to build with make and gcc and easy for package managers to wrap.

### 使われ方

Users run `ipinfo` with an address and optional mask or prefix to print network-derived values, or use flags to select a specific output such as netmask, prefix, broadcast, host count, or host range.

`ipmatch` handles the related membership test: whether an address belongs to a subnet, is the network address, or is the broadcast address.

### パッケージ好きにとっての重要性

This is the non-API `ipinfo` package, not IPinfo.io's `ipinfo-cli`. The distinction matters because both expose network-oriented commands, but Kyberdigi ipinfo is a local subnet calculator whose Homebrew executable is `ipmatch` in the supplied metadata.

Its significance is mostly historical and practical: a tiny pre-cloud networking helper with a Beerware license and a name that now collides with a much larger IP intelligence brand.

### タイムライン

- 2004: Version 1.0 released.
- 2013: Version 1.1 released.
- 2014: Version 1.2 released.

### Related projects

- ipcalc and sipcalc occupy similar subnet-calculation territory.
- IPinfo CLI is unrelated despite the similar package name in some package managers.

### ソース

- <https://kyberdigi.cz/projects/ipinfo/>


## セキュリティノート

broad file, network, media, or database tool signal.

- **Geiger リスク:** blue / 中
- broad file, network, media, or database tool signal

## 他のパッケージマネージャ記録

- Nix - ipinfo: normalized package name match | nixpkgs package indexes: pkgs/by-name/ip/ipinfo/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- winget - ipinfo.ipinfo: normalized package name match | Windows Package Manager source index: ipinfo.ipinfo from https://cdn.winget.microsoft.com/cache/source.msix


## Combined YAML source

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