Chapter_27

📘 Chapter 27 – Git & GitHub Basics

Git and GitHub help you track code history, collaborate with others, and publish projects online.

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🔹 What is Git?

• A version control system → tracks changes in code
• Allows you to undo mistakes, work with multiple versions

🔹 What is GitHub?

• A cloud service for hosting Git repositories
• Provides collaboration, issue tracking, pull requests, CI/CD

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🔹 GitHub Desktop Basics

1. Clone a Repository

• Open GitHub Desktop → File → Clone Repository
• Paste repo link (e.g., https://github.com/user/repo.git)
• Choose a local folder → Clone

2. Make Changes

• Edit files in your local editor (VS Code, etc.)
• GitHub Desktop will show changes under Changes

3. Commit & Push

• Write a commit message → Click Commit to main
• Click Push origin → Uploads changes to GitHub

4. Pull Changes

• If someone else updated repo → Click Fetch origin → Pull

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🔹 Visual Diagram

Local PC  <---clone---  GitHub Cloud Repo
↑                         ↓
commit + push         fetch + pull

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🧠 Summary

• Clone = Download repo
• Commit = Save snapshot of code
• Push = Upload changes to GitHub
• Pull = Download latest changes