Starting with Git & GitHub
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Introduction to Git & GitHub. Agenda: - What’s a Version Control System? - What the heck is Git? - Some Git commands - What’s about GitHub? - Git in Action!
![Git Commands
Getting and Creating projects
init
To create a git repository from an existing
directory of files
$ git init
clone
If you want to get a copy of a project, you
need to clone it
$ git clone [url]](https://image.slidesharecdn.com/startingwithgitgithub-131022152321-phpapp01/85/Starting-with-Git-GitHub-21-320.jpg)
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Starting with Git & GitHub
- 1. #BeeTalks Starting with Git & GitHub Nicolás Tourné @nicotourne CTO of BeeReal Tandil, Argentina - 2013
- 2. Agenda • • • • • What’s a Version Control System? What the heck is Git? Some Git commands What’s about GitHub? Git in Action!
- 3. What’s a Version Control System? “An application that allows you to record changes to your codebase in a structured and controlled fashion.”
- 4. Why do I need that? • • • Makes it way easier to undo errors / roll back to earlier versions of code Makes it way easier to share a codebase between developers without creating conflicts Makes it way easier to deploy changes from development to staging or production environments
- 5. Popular Version Control Systems • • • • • • CVS - Concurrent Version System SVN - SubVersioN Git Mercurial Bazaar LibreSource
- 6. What the heck is Git? • • • • • Distributed Source Control system Open source, free (GNU GPL V2) Originally developed by Linus Torvalds for the development of the Linux Kernel in 2005 Focus on speed and efficiency Quite a unique design and therefore sometimes a bit scary and difficult to understand
- 7. What the heck is Git? • • • • Save snapshots, no differences Branching (lightweight & fast) Automatic merge of files Used on personal or very large projects, and for all size of teams
- 8. Distributed Development • • • Every Git working directory contains the complete repository and history and full revision tracking capabilities You’re not dependent on a central server and you don’t have to be online It’s extremely fast - much faster than SVN, CVS and other systems
- 9. Centralized vs Distributed Development SVN / CVS - Centralized development Central John Peter Bob Carl
- 10. Centralized vs Distributed Development Git - Distributed development John Peter Bob Carl Central
- 11. A Git Sample 1. A new git is initialized as a remote repository John Remote repository master C0 Peter
- 12. A Git Sample 2. John and Peter clone the git repository John Remote repository Peter master master master C0 C0 C0
- 13. A Git Sample 3. John does a commit John Remote repository Peter master master master C1 C0 C0 C0
- 14. A Git Sample 4. John does a push John Remote repository Peter master master master C1 C1 C0 C0 C0
- 15. A Git Sample 5. Peter does a pull John Remote repository Peter master master master C1 C1 C1 C0 C0 C0
- 16. A Git Sample 6. John does a commit & push John Remote repository Peter master master master C2 C2 C1 C1 C0 C0 C0 C0
- 17. A Git Sample 7. Peter does a commit John Remote repository Peter master master master C2 C2 C3 C1 C1 C1 C0 C0 C0
- 18. A Git Sample 8. Peter does a pull (fetch & merge) John Remote repository Peter master master master C2 C2 C4 C1 C1 C0 C0 C2 C3 C1 C0
- 19. A Git Sample 9. Peter does a push John Remote repository Peter master master master C2 C4 C4 C1 C0 C2 C3 C2 C3 C1 C1 C0 C0
- 20. A Git Sample 10. John does a pull John Remote repository Peter master master master C4 C4 C4 C2 C3 C2 C3 C2 C3 C1 C1 C1 C0 C0 C0
- 21. Git Commands Getting and Creating projects init To create a git repository from an existing directory of files $ git init clone If you want to get a copy of a project, you need to clone it $ git clone [url]
- 22. Git Commands Basic Snapshotting git add You have to add file contents to your staging area before you can commit them $ git add index.php git status View the status of your files in the working directory and staging area $ git status
- 23. Git Commands Basic Snapshotting git diff Shows diff of what is staged and what is modified but unstaged $ git diff git commit Records a snapshot of the staging area $ git commit -m “My comment”
- 24. Git Commands Basic Snapshotting git reset Undo changed and commits $ git reset git rm Remove files from the staging area $ git rm index.php
- 25. Git Commands Basic Snapshotting git mv Git doesn’t track file renames $ git mv index.php index.html git stash Save changes made in the current index and working directory for later $ git stash
- 26. Git Commands Branching and Merging git branch List, create and manage branches $ git branch $ git branch QA git checkout Switch to a new branch context $ git checkout QA $ git checkout -b live
- 27. Git Commands Branching and Merging git merge Merge a branch context into your current one $ git branch $ git merge QA git log Show commit history of a branch $ git log
- 28. Git Commands Branching and Merging git tag Tag a point in history as important $ git tag -a v1.0
- 29. Git Commands Sharing and Updating Projects git fetch Download new branches and data from remote repository $ git fetch git pull Fetch from a remote repo and try to merge into the current branch $ git pull
- 30. Git Commands Sharing and Updating Projects git push Push your new branches and data to a remote repository $ git push
- 31. What's about GitHub? • • • It’s a Git repository hosting service… but it adds many of its own features While Git is a command line tool, GitHub provides a web-based graphical interface It also provides access control and several collaboration features, such as wikis and basic task management tools
- 32. What's about GitHub? • • • By default, all projects are public and free. In you want a private project, then pay You can clone any public repository, follow projects and developers, post comments, etc It’s becoming the Facebook’s for developers
- 33. Git in Action! Go to your computer and start playing... 1. Create a new repository on GitHub 2. Clone this repository 3. Add new files 4. Commit and push them 5. Create a new branch and merge files
- 34. Thank you for your attention! Questions? Just tweet me @nicotourne or mail me at [email protected] beerealit.com
- 35. More info at... Official Git site http://git-scm.com Some slides http://www.slideshare.net/jomikr/quick-introduction-to-git http://www.slideshare.net/reallyordinary/intro-to-git-for-drupal-7 http://www.slideshare.net/anildigital/git-introduction http://www.slideshare.net/chacon/getting-git Git commands http://gitref.org/basic GitHub site http://github.com