CodeCrafters CodeCrafters

Build your own Git

Learn about git objects, plumbing commands and more

Start Building
git git git git git git git

In this challenge, you'll build a Git implementation that can initialize a repository, create commits and clone a public repository from GitHub. Along the way, you'll learn about the .git directory, Git objects (blobs, commits, trees etc.), packfiles, Git's transfer protocols and much more.

Stages

Initialize the .git directory

In this stage, you'll implement the git init command. You'll initialize a git repository by creating a .git directory and some files inside it.

Very easy
We'd expect a proficient developer to take < 5 minutes to complete this stage.
Read a blob object

In this stage, you'll read a blob from your git repository by fetching its contents from the .git/objects directory.

You'll do this using the first of multiple "plumbing" commands we'll encounter in this challenge: git cat-file.

Medium
We'd expect a proficient developer to take 30 minutes to 1 hour to complete this stage.
show all...
“ Found out about CodeCrafters from a colleague. It's a tutorial site that has you build your own version of things like Git and Docker from scratch. A cool way to build a stronger mental model of how those tools work. avatar Beyang Liu CTO, Sourcegraph “ Never in my life have I needed something so much and not known until I received it. avatar Lacronicus Reddit user