How to Install and Use sshx in Linux for Collaborative Real-Time Terminal Session Sharing

Pair programming, remote troubleshooting, and technical mentoring often require multiple engineers to collaborate inside a command-line environment simultaneously. While traditional tools like tmux or screen paired with SSH allow multi-user shell sharing, they require complex firewall port forwarding, SSH key distribution, and identical terminal window geometries. If a collaborator is behind a strict corporate NAT or using a mobile device, connecting via raw SSH is often impossible.

sshx is a modern, lightweight, open-source terminal sharing tool written in Rust that enables instant collaborative shell sessions over the web. With a single command, sshx creates an end-to-end encrypted link that collaborators can open in any modern web browser—complete with multiplayer cursor presence, real-time shared typing, an infinite canvas, and zero port-forwarding requirements.

Key Architectural Advantages of sshx

• Zero Configuration: No public IP address, dynamic DNS, or router port-forwarding needed; connections route automatically through secure WebSocket relays.
• Multiplayer Cursors: View real-time coloured cursor positions, selections, and typing activity of all connected participants.
• Infinite Workspace Canvas: Open multiple distinct terminal panes inside an expansive, zoomable web canvas rather than being confined to a single fixed window.
• End-to-End Cryptography: All terminal traffic is encrypted client-side using modern TLS/AES primitives, ensuring intermediate relays cannot read commands or keystrokes.
• Cross-Platform Browser Access: Teammates do not need Linux or sshx installed to assist you; they simply open the generated URL in Chrome, Safari, Edge, or Firefox.

Installing sshx on Linux

Method 1: Direct Installation Script (Quickest)

The developers maintain a standalone installer script that automatically detects your architecture (AMD64 or ARM64) and installs the binary:

curl -sSf https://sshx.io/get | sh

The script installs the compiled binary into ~/.local/bin/sshx or /usr/local/bin/sshx depending on user permissions.

Method 2: Using the Cargo Toolchain

If you have the Rust development environment configured, install directly via Cargo:

cargo install sshx

Method 3: Downloading Pre-Built Binaries

Download pre-compiled binaries directly from GitHub releases for automated server deployments:

# Download latest release
wget https://github.com/ekzhang/sshx/releases/latest/download/sshx-x86_64-unknown-linux-musl.tar.gz

# Extract binary
tar -xzf sshx-x86_64-unknown-linux-musl.tar.gz

# Move to system path
sudo mv sshx /usr/local/bin/

# Verify version
sshx --version

Starting and Sharing a Collaborative Session

1. Launching an Instant Session

To begin sharing your current terminal, simply run:

sshx

sshx connects to the encrypted relay network and prints a unique URL in your console:

$ sshx
  ➜  Link:  https://sshx.io/s/AbC123XyZ#secret_key
  ➜  Shell: /bin/bash

Copy the generated URL and send it to your trusted collaborator. When they open the link in any web browser, they are instantly connected to your active terminal session.

2. Interacting inside the Web Canvas

The web interface provides an expansive collaborative workspace:

• Typing & Execution: Both you and your collaborators can type commands simultaneously. Each user’s cursor is assigned a distinct colour and name tag.
• Multiple Panes: Click the New Terminal button in the browser to spawn additional shell windows running on your Linux host.
• Chat & Notes: Use the built-in sidebar to send quick text notes and code snippets without cluttering the active shell command line.

3. Ending the Session

To terminate the session and immediately revoke all web access, press Ctrl + D or type exit in the initiating terminal window. Alternatively, press Ctrl + C in the console running sshx.

Feature Comparison: sshx vs Traditional Remote Tools

Feature	sshx	tmux over SSH	tmate
Client Requirement	Web Browser only	SSH Client + Key	SSH Client or Web
Port Forwarding	None required	Mandatory (Port 22)	None required
Multiplayer Cursors	Yes (Coloured real-time cursors)	No	No
Multi-Window Canvas	Infinite 2D spatial canvas	Fixed grid splits only	Fixed grid splits only
Self-Hostable Relay	Yes (via sshx-server)	Native	Yes

Self-Hosting an Internal sshx Server

For enterprise environments with strict data sovereignty policies where traffic cannot transit public relays, you can self-host the lightweight sshx-server container internally:

# Run self-hosted relay on internal Docker infrastructure
docker run -d -p 8080:8080 ekzhang/sshx-server:latest

To connect clients to your private internal server, use the --server flag:

sshx --server https://sshx.internal.yourdomain.com

By simplifying remote pairing into a secure, zero-friction web experience, sshx revolutionises command-line collaboration and technical incident response on Linux systems.