Git for Windows Orlando Code Camp, 2013 Ovidiu Dimulescu @odimulescu speakerdeck.com/odimulescu

• SCMs Evolution • Benefits • Storage Model • Repositories Layout • Operations Flow • Setup • Questions? Agenda

About @odimulescu • Working on the Web since 1997 • • Organizer for JaxMUG.com • Co-Organizer for Jax Big Data meetup

1st Generation - RCS, SCCS • Single file-based operations • Local only 2nd Generation – CVS, SVN, TFS • Multi-file based operations • Centralized client / server architecture • Merge before commit 3rd Generation – Git, Hg, Bzr, Arch • Multi-file based operations • Decentralized / Distributed architecture • Commit before merge SCMs Evolution

• Tendency towards more concurrency • DVCS get most of the buzz and innovation Open Source: Git, Mercurial Commercial: Kiln, Veracity, PlasticSCM • 2nd Gen VCS advances are slowing down Last SVN major release took 2 years Trends

• Actively developed ecosystem • Ton of free good docs • Cool kids are doing it: • Hosted repos: • Cross-platform: • Deployment tool: • Marketable skill Git Benefits - By Marketplace

• Fast (logs, diffs, etc.) • Facilitates experimentation – Fast branch creation and switching – Easy merge and re-merge – Stashing Commit before merge • Code artist, driver seat • Multitasking Git Benefits - For Developers

• Large binaries that change often: games, CAD, etc. – git-annex – git-media • Security concerns, entire repository is stored locally • Extremely large projects, a full local copy is not feasible – shallow clones – sparse checkouts – submodules – subtree ?

Storage Model

Git Other Storage Model - Versioning

• Each file revision is stored as a unique BLOB object. The object identifier is an SHA-1 hash of its content. • Git is content-addressable file-system that has a notion of versions • Versions are snapshots of the entire tree • Object database: BLOBs, TREEs, COMMITs, TAGs Storage Model - Internals

• Everyone has direct commit access • Uses a familiar paradigm • Minimal overhead and bottlenecks • Works well for most teams Repositories Layout - Centralized

1. Project maintainer is sole committer to the reference repository 2. Contributors clone (fork) that repository and makes changes 3. Contributor commits those changes to their own public copy 4. Contributor asks the projects maintainer to apply changes 5. Project maintainer reviews, merges & commits to ref. repository Repositories Layout - Hierarchical

Operations Flow - Local

No content

Operations Flow - Merging $ git merge origin

$ git rebase origin Operations Flow - Rebasing

$ git cherry-pick C3 Operations Flow - Cherry-picking

Windows Setup

Hierarchical System wide Per User Per Project Common Settings • Identity - Name + Email • Ignored files • End of line settings Configuration Basics

Configuration Basics - EOL * Images Credit: http://blog.subgit.com/tag/autocrlf/ Since 1.7.2 - Attributes text - on / off eol - how Pre 1.7.2 - core.autocrlf true false input

Official client - git-scm.com GitHub for Windows - windows.github.com Tortoise Git - code.google.com/p/tortoisegit Git Extensions - code.google.com/p/gitextensions EGit for Eclipse - www.eclipse.org/egit Visual Studio Tools for Git - bit.ly/VvYiak * SourceTree - www.sourcetreeapp.com * Clients - Gratis

SmartGit - http://www.syntevo.com/smartgit/index.html Clients - Have you ?

Git <-> Svn - Built-in Git <-> TFS - www.git-tfs.com, 3rd Party, Win only Git <-> TF - gittf.codeplex.com, MS, Java based Git <-> Hg - hg-git.github.com Git <-> Perforce - Built-in Bridges to other VCSes

Clients - Side by Side Official Git CLI, Git-GUI, Gitk Built-in bridges: svn, perforce WinExplorer integration (git-cheetah) Aliases support UI tools limited Github for Windows Easy integration with GitHub All in one installer (Git, Posh-Git) “Clone in Windows” browser button Dumbed down functionality Git Extensions All in one installer (Git, KDiff3) Visual Studio integration, 2005 - 2012 WinExplorer integration Staging support TortoiseGit Good interface WinExplorer integration Hides Git operations

Visual Studio Tools for Git - bit.ly/vstools4git 2012 Update 2 (CTP) SourceTree - www.sourcetreeapp.com Mac only Windows Private Beta Clients - Exciting*

• Uber fast, full history & versioning locally • Commit before merge is liberating • Multi-platform, enables different workflows • Well documented and integrated • Marketable skill Summary

Visual Studio Tools for Git, MSDN Git Extensions, Henk Westhuis Git-TF, CodePlex Git Presentations, Steve Chacon Pro Git Book, Steve Chacon Pragmatic Guide to Git, Travis Swicegood References

Official Documentation ProGit.org GitMagic GitReady.com GitRef.org Version Control by Example Visual Git Reference Try Git Resources

Questions ? Ovidiu Dimulescu @odimulescu speakerdeck.com/odimulescu