Git Without Puns
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see http://chicagoalt.net/event/June2009Meeting-GitWithoutPuns
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Git Without Puns
- 1. --- +++ Chicago ALT.NET June 10th 2009 Sergio Pereira sergio@sergiopereira.com http://sergiopereira.com/blog @sergiopereira 1
- 2. Linux kernel development Linus Torvalds, mid-2005 Replaces BitKeeper Perl C 2
- 3. msysGit: wizard-style installer installer or macports packaged (apt, yum, rpm) 3
- 4. compile from source! 4
- 5. Git on Windows 5
- 6. 6
- 7. 1st class citizens Local or remote Low ceremony No politics, no conventions Branch, branch, branch 7
- 8. Download deltas Local merge (fast) No magic for conflicts Tracks change authors and committer 8
- 9. • HTTP, HTTPS • GIT • File system • SSH • rsync • patch files ;) 9
- 10. .git Git Object directory commands database Repository Compression High level (porcelain) Encryption Configuration Blobs References Trees Low level Commits (plumbing) Hooks Tags 10
- 11. • Secure Hash Algorithm • Global identity • Authenticity da9973c6f9600d90e64aac647f3ed22dfd692f70 11
- 12. BLOB using System.IO; public class Whatever { // … } 5,811 bytes d56210fee9133… 12
- 13. TREE blob web.config 4df3bb723… blob global.asax aee87dc6a… tree bin d1c4a7220… tree images 6f32f4409… … 301 bytes 61bcb4a4f922e… 13
- 14. COMMIT tree 4df3bb723… parent aee87dc6a… author Joe Dev <joe@acme.com> 2009-04-03 13:45 -0600 committer Zack Fu <zack@acme.com> 2009-04-07 09:03 -0800 Added ability to pay with international credit cards… 1,082 bytes cbc72a29fd… 14
- 15. TAG type commit object cbc72a29fd… name v1.9.23 tagger Zack Fu <zack@acme.com> 2009-04-06 17:56 -0800 This release contains the improvements made to… 221 bytes 836dd4aa… 15
- 16. Git Object Model 16
- 17. commit: cbc72a29… tree: 61bcb4a4… tree: 8e6ac483… d56210fe… ca579aa3… ef49a6c6… 17
- 18. commit: cbc72a29… commit: b3a90c64… parent tree: 61bcb4a4… tree: 4d5fee12… tree: 8e6ac483… d56210fe… tree: 385de46a… ca579aa3… ef49a6c6… 37bf5ee1… 18
- 19. working directory index master git add git commit git push origin/master 19
- 20. *D F E E E E D D D C C C C B B B B A A A A MERGE REBASE 20
- 21. Gitting Getting to work 21
- 22. SHA fragment Remote name git cat-file commit a6ed git log origin/master git log refs/remotes/origin/master Branch name Tag name git log some-branch git log v2.2.5 git log refs/heads/some-branch git log refs/tags/v2.2.5 22
- 23. By date Caret parent git ls-tree "master@{3 days ago}" git ls-tree my-branch^ git ls-tree master@{yesterday} git ls-tree my-branch^2 git ls-tree master@{2009-04-22} git ls-tree my-branch^^^^ By sequence Tilde parent git ls-tree master@{3} git ls-tree my-branch~3 [^^^] git ls-tree master~3^2~4 23
- 24. Natural dev2 dev1 dev4 dev3 24
- 25. Central Repo dev2 dev1 shared dev4 dev3 25
- 26. Benevolent blessed Dictator dev1 boss dev2 lead1 dev3 lead2 dev4 26
- 27. Integration dev1 dev1' Manager boss' boss dev2 dev2' dev3 dev3' 27
- 28. GitHub: Social Forking 28
- 29. 29
- 30. (see you next month to learn more about Fluent NHibernate) 30