licod.io - Linux Command of the Day

Master Linux one command at a time. Daily lessons with examples and pro tips.

🚀 What is this?

A minimalist website that teaches you one essential Linux command every day. No ads, no tracking, no BS. Just pure command-line knowledge delivered daily with:

• 42 curated commands - Essential Linux/Unix tools every user should know
• Daily rotation - New command each day using seeded shuffle
• Practical examples - Real-world usage patterns you can copy
• Pro tips - Expert tricks to level up your terminal skills
• Terminal UI - Authentic typing animation and command-line feel
• Works offline - PWA support, install as an app

🎯 Why?

Learning Linux can be overwhelming. This site teaches you one command at a time, making it easy to build muscle memory without information overload.

💻 Tech Stack

• 100% Vanilla - No frameworks, zero dependencies, pure HTML/CSS/JS
• Blazing fast - <50KB total, loads in <100ms
• Offline-first - Service Worker PWA
• Mobile optimized - Responsive design, works great on phones

🛠️ Development

Local Setup

# Clone the repo
git clone https://github.com/yourusername/licod.git
cd licod

# Serve locally
python3 -m http.server 8000
# Open http://localhost:8000

Project Structure

licod/
├── index.html           # Main HTML
├── style.css            # Styles + animations
├── script.js            # App logic
├── sw.js               # Service worker (cache version here!)
├── manifest.json       # PWA manifest
├── commands_en.json    # Command data (auto-generated)
├── data/               # Source markdown files (42 commands)
├── create_commands.sh  # Generates data/*.md files
├── collect_en.sh       # Converts .md → commands_en.json
└── bump-cache.sh       # Auto-bumps Service Worker version

🔧 Adding New Commands

See CONTRIBUTING.md for detailed workflow.

Quick version:

1. Edit create_commands.sh and add your command
2. Run ./create_commands.sh && ./collect_en.sh
3. Bump cache: ./bump-cache.sh
4. Commit and push

📦 Deployment

This site deploys automatically via GitHub → Netlify:

1. Push to main branch on GitHub
2. Netlify auto-deploys
3. Live on licod.io in ~30 seconds

Important: Always run ./bump-cache.sh before pushing CSS/JS changes so users get the latest version!

🤝 Contributing

Contributions welcome! Whether it's:

• Adding new commands
• Improving examples
• Fixing typos
• Better pro tips

Please read CONTRIBUTING.md first.

📊 Performance

• Total size: 42 KB (uncompressed), ~15 KB gzipped
• Load time: <100ms on WiFi, <500ms on 4G
• Lighthouse: 95-100 scores across all metrics
• SEO: Full meta tags, sitemap, robots.txt

🎨 Design Philosophy

• Minimal - No clutter, focus on the command
• Fast - Instant load, smooth animations
• Accessible - High contrast, readable fonts
• Authentic - Feels like a real terminal

📄 License

MIT License - feel free to fork and make your own version!

☕ Support

Enjoying licod.io? Buy me a coffee

---

Made with ❤️ for the Linux community

Visit the live site: licod.io