Why Git

Why Git? A quick trip down the Git rabbit hole. Mark Guzman mg@hasno.info @segy http://hasno.info Thursday, March 4, 2010

What is Git Distributed Version Control Fast (small C core) Popular (Github) Stupid Content Tracker Thursday, March 4, 2010

Beneﬁts Easier Merging Cheap fast branching Speed Checkout size Maintains an easily usable history Redundancy by default Thursday, March 4, 2010

Why Merging Tracking Matters History Matters Why did Bob change 10 ﬁles in his branch 3 weeks back? Why did you change some of the same ﬁles in yours? How will you know a year down the road? Thursday, March 4, 2010

File Based Change Tracking Thursday, March 4, 2010

Changeset Tracking ✴Git treats all your changes as a single ChangeSet. ✴It uses a SHA-1 hash of the changes to identify them ✴Eg: commit 7ef55e41f1cf529e47723d869233492077c94896 Thursday, March 4, 2010

Stupid Content Tracking Simple object relationships. Tree (folder) -> Blob (ﬁle data) Thursday, March 4, 2010

Commits -> Trees Thursday, March 4, 2010

Refs (Branches) Refs -> Commits -> Trees -> Blobs Thursday, March 4, 2010

Staging The Index (Staging Area) allows you to organize Does the comment make sense for the commit? Thursday, March 4, 2010

Centralized Workﬂow Central Repository is treated as a hub for changes. It would drive automated builds. Thursday, March 4, 2010

Distributed Workﬂow You can pull from any compatible* source Thursday, March 4, 2010

Branch & Merge tracking Branch with changes Merged Tree Thursday, March 4, 2010

Rebase? Take my commits and replay them after the HEAD of another branch. Thursday, March 4, 2010

Windows Tools TortoiseGit Git Extensions msysgit Git Cheetah git-gui gitk Thursday, March 4, 2010

Live Demo Time. Thursday, March 4, 2010

Notes from the Trenches Learning curve Server setup easier on linux Submodules != svn externals Watch our for detached HEAD Be EXTREMELY careful with a force push. Thursday, March 4, 2010

Force things at your own risk. Thursday, March 4, 2010

Why I choose Git. Merging with history Quick branch switching Stashing and Staging Best SCM I’ve used so far. Thursday, March 4, 2010

Questions References http://git-scm.com http://github.com http://code.google.com/p/tortoisegit/ http://code.google.com/p/gitextensions/ http://marklodato.github.com/visual-git-guide/ http://progit.org/book/ http://www.timdavis.com.au/git/setting-up-a-msysgit-server-with-copssh-on- windows/ Thursday, March 4, 2010

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Why Git

by Mark Guzman on Mar 06, 2010

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Why Git — Presentation Transcript