1. Introduction to Git and GitHub
Mathieu Benoit

2. Why use Git Git, like SVN, is a Version control system
pyEudetAnalysis and AllPix now sitting on a CERN SVN server :
Centralized
Require some kind of CERN ID
Not very collaborative
In practice, people do develop nice things but do not contribute back
Lack of feedback
No incentive

3. Why use Git SVN : Centralized server, All commits go to server
Discourage contribution!
My code is too ugly !
I’m not finished just yet!
Nobody cares about what I do anyway …
SVN Repository
commit
commit
commit
My code
Your code
His code

4. Why use Git A CERN based repo Git Hub Decentralized :
Each repo contains all the others
You can keep record of your change locally, work on multiple version
My Repo

5. Why use Github
GitHub is a Git repository web-based hosting service which offers all of the functionality of Git as well as adding many of its own features. Unlike Git which is strictly a command-line tool, Github provides a web-based graphical interface and desktop as well as mobile integration. It also provides access control and several collaboration features such as wikis, task management, and bug tracking and feature requests for every project.
GitHub offers both paid plans for private repositories, and free accounts, which are usually used to host open source software projects. As of 2014, Github reports having over 3.4 million users, making it the largest code host in the world.
GitHub has become such a staple amongst the open-source development community that many developers have begun considering it a replacement for a conventional resume and some employers require applications to provide a link to and have an active contributing GitHub account in order to qualify for a job

6. Some projects on GitHub
ROOT :
EUTelescope :
EUDAQ :
CERNOPs :
CMSSW :
Etc …

7. Social aspect of Github
Social network-like interface
Follow other people work (“friends”)
Favors sharing , commenting
Statistics, various useful plots

8. Demo https://github.com/mathieubenoit/aGitDemo