# zssh を Homebrew, apt, dnf, MacPorts, Nix, pacman でインストール
zssh 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:zssh
```
追加のインストールコマンド:
### macOS
- Homebrew (100%):
```sh
brew install zssh
```
証拠: local Homebrew formula metadata
- MacPorts (94%):
```sh
sudo port install zssh
```
証拠: MacPorts ports tree: comms/zssh/Portfile from https://api.github.com/repos/macports/macports-ports/git/trees/master?recursive=1
### Linux
- Debian apt (92%):
```sh
sudo apt install zssh
```
証拠: Debian stable package indexes: zssh from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz
- dnf (92%):
```sh
sudo dnf install zssh
```
証拠: Fedora Rawhide package metadata: zssh 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#zssh
```
証拠: nixpkgs package indexes: pkgs/by-name/zs/zssh/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- pacman (92%):
```sh
sudo pacman -S zssh
```
証拠: Arch Linux sync databases: zssh from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz
## パッケージ情報
- **パッケージキー:** brew:zssh
- **パッケージマネージャ:** Homebrew
- **バージョン:** 1.5c
- **ソース概要:** Interactive file transfers over SSH
- **ホームページ:**
- **生成日時:** 2026-08-03T19:37:03+00:00
## 実行可能ファイル
- zssh (エイリアス)
- ztelnet (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: 1.5c
## プロジェクトの歴史と使われ方
zssh is a SourceForge-era terminal utility that wraps an interactive SSH session with ZMODEM file-transfer support. Its companion command, ztelnet, applies the same idea to telnet.
### プロジェクトの歴史
The project was registered on SourceForge on 2000-06-27 and is credited on the homepage to Matthieu Lucotte. Its public homepage and SourceForge page describe zssh as Zmodem SSH: a way to transfer files to or from a remote machine while staying inside an already-authenticated secure shell session.
zssh's design reflects an older Unix remote-login workflow. Instead of opening a second terminal and running scp, it inserts a tty/pty layer between the user and local ssh process, then switches that channel between normal shell mode and local file-transfer commands after an escape sequence.
### 採用の歴史
zssh never became a replacement for scp, sftp, or rsync, but it remained packaged because it solved a specific interactive problem: moving files during a live remote shell session when re-authentication or another connection was inconvenient.
Its continued presence in package systems is a classic preservation case for small Unix tools: the upstream release is old, the protocol it depends on is older still, but a narrow workflow still exists for users who know exactly why they want ZMODEM over an SSH terminal.
### 使われ方
A user starts zssh much like ssh. During the remote shell session, pressing the configured escape sequence opens zssh's local prompt, where builtins such as rz and sz hook local transfer programs into the SSH channel. The FAQ emphasizes that ssh, sz, and rz must be available, with rz/sz required on both local and remote machines.
The practical failure modes are terminal-oriented: escape-key conflicts, non-8-bit-clean pty chains, incompatible rz/sz versions, and programs such as remote screen sessions interfering with the transparent channel.
### パッケージ好きにとっての重要性
zssh matters to package nerds as a fossil of a transitional era between dial-up/BBS-style ZMODEM habits and modern encrypted remote administration. It packages an old terminal file-transfer protocol as a composable Unix wrapper around ssh.
It is also a reminder that packaging sometimes preserves workflows rather than fashionable software: a tiny C program, readline-style local prompt, and external rz/sz dependency can remain useful long after the upstream website stops looking modern.
### タイムライン
- 2000-06-27: zssh project registered on SourceForge.
- 2003-09-24: zssh 1.5c listed as the latest release on the project homepage.
- 2013-03-21: SourceForge project page records the last project update.
### Related projects
- Related tools and protocols include OpenSSH, telnet, scp, sftp, rsync, lrzsz, rz, sz, and the ZMODEM protocol.
### ソース
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## 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
- Debian apt - zssh - 1.5c.debian.1-10+b1: normalized package name match | Debian stable package indexes: zssh from https://deb.debian.org/debian/dists/stable/main/binary-amd64/Packages.xz | interactive file transfers over ssh | https://zssh.sourceforge.net/
- Nix - zssh: normalized package name match | nixpkgs package indexes: pkgs/by-name/zs/zssh/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1
- Ubuntu apt - zssh - 1.5c.debian.1-10build2: normalized package name match | Ubuntu 24.04 LTS package indexes: zssh from https://archive.ubuntu.com/ubuntu/dists/noble/universe/binary-amd64/Packages.gz | interactive file transfers over ssh | https://zssh.sourceforge.net/
- dnf - zssh - 1.5c-22.fc45: normalized package name match | Fedora Rawhide package metadata: zssh from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/07190dc5ae9f35ae73866675fed6d95fe6e8d9fe22c9d7cdf85862cb2ed24a4c-primary.xml.zst | SSH and Telnet client with ZMODEM file transfer capability | http://zssh.sourceforge.net/
- pacman - zssh - 1.5c-15: normalized package name match | Arch Linux sync databases: zssh from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz | SSH and Telnet client with ZMODEM file transfer capability | http://zssh.sourceforge.net/
- MacPorts - zssh: normalized package name match | MacPorts ports tree: comms/zssh/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/zssh.yml](https://github.com/mxcl/pkgdb/blob/main/combined/zssh.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