1. Version Control with Git
Version Control with Git

2. Why track/manage different versions of code?

3. Backup: Undo or refer to old stuff

4. Branch: Maintain old release while working on new

5. Collaborate: Work in parallel with teammates

6. SWEBOK Knowledge Areas
Software Requirements
Software Design
Software Construction
Software Testing
Software Maintenance
Software Configuration Management
Software Engineering Management
Software Engineering Process
Software Engineering Models and Methods
Software Quality
Software Engineering Professional Practice
Software Engineering Economics
Computing Foundations
Mathematical Foundations
Engineering Foundations
Today’s topic

7. Version Control Systems (VCSs)
Help you track/manage/distribute revisions
Standard in modern development
Examples:
Revision Control System (RCS)
Concurrent Versions System (CVS)
Subversion (SVN)
Git
older
Our focus
newer

8. Version Control Hosting Services
Enable sharing version control repos
Internet/Web based
Examples:
SourceForge
Bitbucket
GitLab
GitHub
Our focus

9. GitHub-User Perspective
You
GitHub
Working Dir

10. GitHub-User Perspective
You
GitHub
Working Dir
Local Repos

11. GitHub-User Perspective
You
GitHub
Working Dir
Local Repos
Remote Repos

12. Using GitHub to Collaborate
Remote Repos
GitHub

13. Questions to answer How organized? You GitHub What operations?
Working Dir
Local Repos
Remote Repos
What operations?

14. Repo Organization

15. Commits (from oldest to newest; hashes as commit IDs)
Repo Organization
Commits (from oldest to newest; hashes as commit IDs)

16. Snapshot of all files at each commit
Repo Organization
Snapshot of all files at each commit

17. Repo Organization
Branch (last commit)

18. Current Version in Working Dir
Local repos also have...
HEAD
Current Version in Working Dir

19. Local Repo Operations You init add/commit log … Working Dir
Local Repos

20. How commit works...
Before
HEAD

21. How commit works...
After
HEAD

22. Remote Repo Operations
You
GitHub
Working Dir
clone
push
pull
remote
...
Local Repos
Remote Repos

23. Learn the Core Local/Remote Operations
Demo Videos:
tutorial/demo-04-git-local.html
tutorial/demo-05-git-branches.html
tutorial/demo-06-git-remote.html

24. Summary Version Control Systems Git and GitHub Repo Structure
Local/Remote Repo Operations
Commit Semantics