# zsync を Homebrew, apt, dnf, MacPorts, Nix, pacman, zypper でインストール
zsync 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:zsync
```
追加のインストールコマンド:
### macOS
- Homebrew (100%):
```sh
brew install zsync
```
証拠: local Homebrew formula metadata
- MacPorts (94%):
```sh
sudo port install zsync
```
証拠: MacPorts ports tree: net/zsync/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1
### Linux
- Debian apt (92%):
```sh
sudo apt install zsync
```
証拠: Debian stable package indexes: zsync from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
- dnf (92%):
```sh
sudo dnf install zsync
```
証拠: Fedora Rawhide package metadata: zsync from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst
- Nix (92%):
```sh
nix profile install nixpkgs#zsync
```
証拠: nixpkgs package indexes: pkgs/by-name/zs/zsync/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- pacman (92%):
```sh
sudo pacman -S zsync
```
証拠: Arch Linux sync databases: zsync from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz
- zypper (92%):
```sh
sudo zypper install zsync
```
証拠: openSUSE Tumbleweed package metadata: zsync from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst
## パッケージ情報
- **パッケージキー:** brew:zsync
- **パッケージマネージャ:** Homebrew
- **バージョン:** 0.7.2
- **ソース概要:** File transfer program
- **ホームページ:**
- **リポジトリ:**
- **最終更新:** 2026-07-25T21:51:00+02:00
- **生成日時:** 2026-08-03T19:37:03+00:00
## 実行可能ファイル
- zsync (エイリアス)
- zsyncmake (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: 0.7.2
## プロジェクトの歴史と使われ方
zsync is a differential download tool that applies the rsync algorithm on the client side over ordinary HTTP. It lets users update a large local file by downloading only changed byte ranges from a web server that publishes a small .zsync metadata file.
### プロジェクトの歴史
Colin Phipps developed zsync to solve a distribution problem rather than a private synchronization problem. The original site contrasts it with rsync: rsync is designed for synchronizing data between machines, while zsync is aimed at distributing one file from a server to many downloaders without running a special server daemon.
The project was originally released in 2004. The technical paper describes the core idea as client-side rsync: the server performs one-off checksum precomputation into a control file, while each client uses HTTP range requests to fetch only missing content.
The 0.7 line is a rewrite of the program. The current site notes that it is less mature than the 0.6.x line, removed older look-inside-compressed-file support, and keeps development history in the GitHub repository.
### 採用の歴史
zsync's best-known adoption niche is large-file distribution where many users already have yesterday's or last week's file: Linux installation images, daily builds, virtual-machine images, and other release artifacts. The server page explicitly calls out daily Linux installer or live images as a good fit.
The project never became a general directory-sync replacement, and its own documentation says multiple-file support is not planned. That boundary is part of its packaging identity: zsync is a small CLI for one-file HTTP distribution, with zsyncmake producing the metadata publishers need.
### 使われ方
Publishers run zsyncmake against a target file to generate a .zsync control file containing the precomputed checksums and one or more URLs for the full content. The web server must make both the .zsync metadata and the full target available, and should support HTTP Range requests.
Users run zsync against the .zsync URL. The client scans existing local data, downloads only missing ranges from the target URL, and reconstructs the new file. The design is most effective when old and new files share content and when compression is piecewise or rsync-friendly.
### パッケージ好きにとっての重要性
zsync is package-nerd significant because it attacks bandwidth costs at the distribution layer using boring web hosting. It asks maintainers to publish one extra metadata file, not to operate rsync infrastructure or invent a new protocol.
It is also a good example of a package whose constraints matter as much as its feature list: single-file distribution, HTTP range behavior, stable target content, and compression choices all determine whether the package is magic or useless.
### タイムライン
- 2004: zsync originally released.
- 2000s: 0.0.x through 0.6.x releases accumulated on the official download page.
- 0.7.0: Rewrite line introduced, with the project warning that it may be less mature than 0.6.x.
- 0.7.2: Current version listed on the official download page.
### Related projects
- Related projects and technologies include rsync, rdiff, HTTP/1.1 range requests, gzip --rsyncable, Linux distribution ISO publishing, update systems, and mirror networks.
### ソース
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## セキュリティノート
zsync に一致するローカルシークレット処理マニフェストは見つかりませんでした。将来の対応で安定したパッケージ URL を使えるよう、Nucleus パッケージメタデータはここに公開されています。
## 他のパッケージマネージャ記録
- Debian apt - zsync - 0.6.2-8: normalized package name match | Debian stable package indexes: zsync from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | client-side implementation of the rsync algorithm | http://zsync.moria.org.uk/
- Nix - zsync: normalized package name match | nixpkgs package indexes: pkgs/by-name/zs/zsync/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - zsync - 0.6.2-5build1: normalized package name match | Ubuntu 24.04 LTS package indexes: zsync from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | client-side implementation of the rsync algorithm | http://zsync.moria.org.uk/
- dnf - zsync - 0.6.5-2.fc45: normalized package name match | Fedora Rawhide package metadata: zsync from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | a file transfer program using the same algorithm as rsync over HTTP | https://zsync.moria.org.uk/
- pacman - zsync - 0.6.5-1: normalized package name match | Arch Linux sync databases: zsync from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | A file transfer program that's able to connect to rsync servers | https://zsync.moria.org.uk/
- zypper - zsync - 0.6.3-1.5: normalized package name match | openSUSE Tumbleweed package metadata: zsync from https://download.opensuse.org/tumbleweed/repo/oss/repodata/50b07339cb64c8ed4091bdbabddadc1ff5737b090e478818a195b40d8a3292861a879139b4a3987c31109699fde9fbf4a716367ddf4eef77da75f96e3193d6ed-primary.xml.zst | Client-side Implementation of the Rsync Algorithm over HTTP | https://zsync.moria.org.uk/
- MacPorts - zsync: normalized package name match | MacPorts ports tree: net/zsync/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/zsync.yml](https://github.com/mxcl/pkgdb/blob/main/combined/zsync.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