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GIT
                              git the basics right




                                  david krmpotić



Saturday, November 28, 2009
What is GIT?



                    • source control system
                    • distributed
                    • offline




Saturday, November 28, 2009
Git is not....




Saturday, November 28, 2009
Git is not....




Saturday, November 28, 2009
GIT vs SVN




Saturday, November 28, 2009
Basics




Saturday, November 28, 2009
Basics




Saturday, November 28, 2009
Basic Commands

                    • git init
                    • git clone
                    • git add + git commit
                    • git push
                    • git pull
                    • git log


Saturday, November 28, 2009
Git log




Saturday, November 28, 2009
Everything is local




Saturday, November 28, 2009
Staging Area (index)

                    • an intermediate step
                    • allows flexibility
                    • build commits the way you want




Saturday, November 28, 2009
Why is it better than X?
                    • cheap local branching
                    • everything is local
                    • fast
                    • small space
                    • staging area
                    • any workflow
                    • GitHub
                                              http://whygitisbetterthanx.com
Saturday, November 28, 2009
Branching

                    • git branch develop
                    • git merge develop




Saturday, November 28, 2009
FAST




Saturday, November 28, 2009
Time to Take The Time!



                    • if you want to go faster,
                      stop and learn GIT




Saturday, November 28, 2009
Source Control
                                 Taxonomy




Saturday, November 28, 2009
DAG (no deltas)




Saturday, November 28, 2009
Source Control
                                 Taxonomy




Saturday, November 28, 2009
Workflow




                               svn style
Saturday, November 28, 2009
Integration Manager
                                   Workflow




Saturday, November 28, 2009
Dictator and
                     Lieutenants Workflow




                              Linux kernel development
Saturday, November 28, 2009
Object Database


                    • blob
                    • tree
                    • commit
                    • (tag)



Saturday, November 28, 2009
SHA

                    • Each object is identified by a SHA-1
                      hash of its contents




Saturday, November 28, 2009
Blob




Saturday, November 28, 2009
Tree




Saturday, November 28, 2009
Commit




Saturday, November 28, 2009
Saturday, November 28, 2009
Immutable objects




Saturday, November 28, 2009
Repository Internals




Saturday, November 28, 2009
Branching commands


                    • git branch
                    • git checkout
                    • git merge
                    • git rebase



Saturday, November 28, 2009
Remotes




                                        = remote branch
                                        They take the form (remote)/(branch).
                                        For instance, if you wanted to see
                                        what the master branch on your origin
                                        remote looked like as of the last time
                                        you communicated with it, you would
                                        check the origin/master branch.




Saturday, November 28, 2009
Tools




Saturday, November 28, 2009
Resources

              • gitready.com
              • O’Reilly: Version Control with Git
              • PeepCode: Git
              • whygitisbetterthanx.com
              • gitcasts.com/git-talk
              • progit.org
              • david@strelovod.com
Saturday, November 28, 2009

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David Krmpotic: Git