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Introduction

What is Git?

Git is a version control system. It keeps a complete history of your project. Each saved snapshot is called a commit. If something breaks, you can see exactly what changed, who changed it and when, and undo it.

Why every developer uses Git

  • Undo mistakes: go back to any earlier version of any file.
  • Experiment safely: try new ideas on a separate branch without touching working code.
  • Teamwork: many people can work on the same project at once.
  • Backup: push your code to GitHub and it's safe even if your laptop dies.
  • Portfolio: your GitHub profile shows employers what you've built.

Git vs GitHub

GitGitHub
WhatA toolA website
Runs onYour computerThe internet
DoesTracks changesStores Git projects online, adds pull requests, issues, collaboration