Intro to Git

Git is an open source, distributed, version control system designed for speed and efficiency.

A git repository is two things

• A key value store mapping checksum → file
• A tree talking about how those checksums correspond to versions, branches, etc.

To the User..

A magic directory with lots of filesystem features.

git init

Creates a new git repository

  - project/
      + .git/
      - README
  

The git repository lives in .git

Interact with the repository with a staging process

When you commit it bumps up the "version" of your repository.

Demo

• git init
• git status
• git add
• git commit

Talking to Other Repositories

• git remote add URL
• git clone URL
  • automatically adds URL as "origin"
• git push REMOTE BRANCH
• git pull REMOTE BRANCH

Demo

• git clone
• git pull
• git push

Exercise 1