What is Git?

Git is a distributed version control system that tracks changes to your code over time.

Why Use Git?

• Track Changes: See what changed, when, and by whom
• Collaboration: Work with others without overwriting code
• Backup: Your code history is always saved
• Branching: Work on features in isolation
• Undo Mistakes: Easily revert to previous versions

Key Concepts

Repository (Repo)

A repository is a folder that Git tracks. It contains all your project files and the complete history of changes.

Commit

A commit is a snapshot of your project at a specific point in time. Each commit has:

• A unique hash (ID)
• A message describing the change
• The author and timestamp
• A pointer to the previous commit

Branch

A branch is an independent line of development. The default branch is usually called main or master.

Try the Git Terminal

Practice Git commands in this interactive terminal:

Common Commands Overview

Command	Description
git status	Show current state
git add	Stage changes
git commit	Save changes
git log	View history
git branch	Manage branches

Exercise: Run Your First Commands

Try running git status and git log --oneline: