# logswan を Homebrew, apt でインストール

logswan 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:logswan
```

追加のインストールコマンド:

### macOS

- Homebrew (100%):

```sh
brew install logswan
```

  証拠: local Homebrew formula metadata

### Linux

- Debian apt (92%):

```sh
sudo apt install logswan
```

  証拠: Debian stable package indexes: logswan 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:logswan
- **パッケージマネージャ:** Homebrew
- **パッケージマネージャページ:** <https://formulae.brew.sh/formula/logswan>
- **バージョン:** 2.1.17
- **ソース概要:** Fast Web log analyzer using probabilistic data structures
- **ホームページ:** <https://www.logswan.org>
- **リポジトリ:** <https://github.com/fcambus/logswan>
- **上流ドキュメント:** <https://www.logswan.org/>
- **ライセンス:** BSD-2-Clause
- **ソースアーカイブ:** <https://github.com/fcambus/logswan/archive/refs/tags/2.1.17.tar.gz>
- **最終更新:** 2026-07-02T00:18:32Z
- **生成日時:** 2026-07-08T07:18:31+00:00

## 実行可能ファイル

- logswan (cli)
- logswan (エイリアス)

## 依存関係

- jansson
- libmaxminddb

## ビルド依存関係

- cmake

## インストール挙動

- post-install フック: 未定義
- Bottle: 利用可能 対象 arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux

## バージョンと鮮度

- ページ生成日: 2026-07-08
- マネージャ版: 2.1.17
- マネージャ更新日: 2026-07-02
- ローカルデータ: OK
- 上流リポジトリ: https://github.com/fcambus/logswan
- 検出された最新: 2.1.17 (最新)
## プロジェクトの歴史と使われ方

Logswan is a fast web-log analyzer focused on very large log files, especially API logs. It uses probabilistic data structures, including HyperLogLog counters, to keep memory use constant while estimating unique visitors.

### プロジェクトの歴史

Frederic Cambus develops Logswan as intentionally opinionated software. The README states design goals of speed, memory efficiency, and simple code, and documents deliberate constraints such as Common Log Format support and byte-level reporting without rounded units.

The official GitHub repository was created in June 2015. The project remains small and C-focused, with Jansson and libmaxminddb as key dependencies and JSON output as its primary integration surface.

### 採用の歴史

Logswan's adoption is modest but practical: the README lists packages for OpenBSD, NetBSD, FreeBSD, Debian, Ubuntu, Void Linux, Gentoo, and Homebrew. The supplied package facts also show Homebrew, Debian, and Ubuntu entries.

The official GitHub repository shows a long-lived niche project with hundreds of stars, a small fork count, and regular releases through the 2.1.x series.

### 使われ方

The CLI form is `logswan [-ghv] [-d db] logfile`, with `-` accepted for standard input. Output goes to standard output as JSON, making it easy to redirect into other tools.

GeoIP lookups are optional through `-g` and `-d db`. The README documents the default GeoIP2 database directory under `${CMAKE_INSTALL_PREFIX}/share/dbip`, but this is a data-file lookup rather than a Logswan configuration file.

### パッケージ好きにとっての重要性

Logswan is interesting to package maintainers because it is a small, security-minded C tool with clear dependencies, sandboxing notes for OpenBSD pledge, optional seccomp, and deterministic JSON output. It is the opposite of a sprawling analytics stack.

### タイムライン

- 2015: Official GitHub repository created.
- 2021: 2.1.12 release published.
- 2025: 2.1.15 release published.
- 2026: 2.1.16 release published.

### Related projects

- Logswan belongs to the family of web-log analyzers, but its README differentiates it by using HyperLogLog counters and by avoiding broad format support.

### ソース

- <https://api.github.com/repos/fcambus/logswan>
- <https://github.com/fcambus/logswan#readme>
- <https://github.com/fcambus/logswan/releases/tag/2.1.16>
- <https://www.logswan.org/>
- source_facts.package-manager


## 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

## ソースデータベース詳細

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** logswan
- **Version Scheme:** 0
- **Revision:** 0
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** stable

## 他のパッケージマネージャ記録

- Debian apt - logswan - 2.1.15-1: normalized package name match | Debian stable package indexes: logswan from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | fast Web log analyzer using probabilistic data structures | https://github.com/fcambus/logswan
- Ubuntu apt - logswan - 2.1.14-2: normalized package name match | Ubuntu 24.04 LTS package indexes: logswan from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | fast Web log analyzer using probabilistic data structures | https://github.com/fcambus/logswan


## 関連リンク

- [Terminal utility packages](https://www.automicvault.com/ja/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Text processing packages](https://www.automicvault.com/ja/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata.
- [Networking and protocol packages](https://www.automicvault.com/ja/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata.
- [Database and data packages](https://www.automicvault.com/ja/pkg/database-data-tools/) - Matched database, SQL, migration, or data-store metadata.
- [libmaxminddb](https://www.automicvault.com/ja/pkg/brew/libmaxminddb/) - Runtime dependency declared by Homebrew.
- [cmake](https://www.automicvault.com/ja/pkg/brew/cmake/) - Build dependency declared by Homebrew.
- [apache-arrow](https://www.automicvault.com/ja/pkg/brew/apache-arrow/) - Shares av.db curated category or tags: analytics, cli, data.
- [cubejs-cli](https://www.automicvault.com/ja/pkg/brew/cubejs-cli/) - Shares av.db curated category or tags: analytics, cli, data.
- [duckdb](https://www.automicvault.com/ja/pkg/brew/duckdb/) - Shares av.db curated category or tags: analytics, cli, data.
- [hive](https://www.automicvault.com/ja/pkg/brew/hive/) - Shares av.db curated category or tags: analytics, cli, data.
- [metabase](https://www.automicvault.com/ja/pkg/brew/metabase/) - Shares av.db curated category or tags: analytics, cli, data.
- [monetdb](https://www.automicvault.com/ja/pkg/brew/monetdb/) - Shares av.db curated category or tags: analytics, cli, data.
- [opensearch](https://www.automicvault.com/ja/pkg/brew/opensearch/) - Shares av.db curated category or tags: analytics, cli, data.
- [opensearch-dashboards](https://www.automicvault.com/ja/pkg/brew/opensearch-dashboards/) - Shares av.db curated category or tags: analytics, cli, data.
- [goaccess](https://www.automicvault.com/ja/pkg/brew/goaccess/) - Local package facts share a topical domain. Shared terms: analysis, analytics, analyzer, cli, libmaxminddb.
- [avro-c](https://www.automicvault.com/ja/pkg/brew/avro-c/) - Local package facts share a topical domain. Shared terms: cli, data, jansson.

## Combined YAML source

View the package source record on GitHub. [combined/logswan.yml](https://github.com/automic-vault/db/blob/main/combined/logswan.yml)


## ソース

- Nucleus package database
- Geiger risk classifier
- package-page enrichment
- curated package history
- package version freshness
- av.db category and tag curation
- package relationship graph
- external package-manager database matches
- cross-ecosystem install command graph