Tmux Terminal
Control interactive terminal sessions and TUI apps via tmux
What You Can Do
You can automate terminal interactions with tmux to test interactive applications like ralph-tui, manage long-running processes across session steps, and capture live terminal output for validation or QA reporting. This skill lets you send keystroke sequences, read screen state, and keep processes alive between Claude prompts—essential for testing TUI workflows that require navigation, input, and real-time feedback.
Features
start new sessions without attaching to them
type commands, navigate menus, send special keys (Enter, Ctrl-C, Tab, arrows)
read terminal state to verify app behavior and parse results
keep web servers, watch modes, or CLI loops alive across steps
automate navigation and input for ralph-tui and similar TUI apps
kill sessions when done to prevent resource leaks
capture specific line ranges to extract relevant state from complex screens
Example Output
Example 1: Testing ralph-tui Navigation
Session started: ralph-tui
Command sent: cargo run -p ralph-tui
Screen output captured:
┌─────────────────────┐
│ Select Option: │
│ > Option A │
│ Option B │
└─────────────────────┘
Navigation: Down arrow sent
Updated screen:
┌─────────────────────┐
│ Select Option: │
│ Option A │
│ > Option B │
└─────────────────────┘
Example 2: Long-Running Web Server
Session: dev-server
Command: npm run dev
Output: Server listening on http://localhost:3000
Status: ✓ Ready for requests
Example 3: Parsing Multi-Line Output
Captured 200 lines from session
Filtered output:
Test Results:
✓ Test 1 passed
✓ Test 2 passed
✗ Test 3 failed: timeout
What's Included
- SKILL.md: complete tmux command reference with session lifecycle, keystroke patterns, and TUI interaction workflows
- ralph-tui testing template: ready-to-use patterns for navigating and testing interactive CLI apps
- Long-running process checklist: steps for starting, monitoring, and cleaning up background processes
- Screen capture & parsing guide: techniques for extracting output from noisy terminal sessions
- Special key reference: tmux key codes for Enter, Ctrl-C, arrows, Tab, and Escape
Who It's For
- QA engineers testing interactive CLI applications and TUI workflows
- Backend developers automating terminal-based testing and server validation
- DevOps engineers managing and monitoring long-running processes programmatically
- Full-stack developers building and validating terminal UI components
- Build/test automation engineers creating reproducible CLI testing suites
Best For
- Automated testing of TUI applications (ralph-tui, ncurses-based apps, etc.)
- Validating long-running processes (web servers, watch mode, CLI loops)
- Capturing and parsing live terminal output for QA reports
- Simulating user interactions with interactive CLI prompts
- Managing persistent terminal sessions across multiple Claude steps
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