Quick Git Talk

Transcript

1. Learn You Some Git Not Your Average Git Talk

2. GIT IS NOT REVISION CONTROL SOFTWARE

3. GIT is a filesystem

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6. Content Addressable Filesystem

7. "Who are you and why are you still talking?"

8. •I am called Randall •I know more about git than

   you •Probably... maybe...
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10. •I am called Randall •I know more about git than

    you •Probably... maybe... •I work at AWS •I tweet @jrhunt •I wrote gitshots •I write great commit messages

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13. •I am called Randall •I know more about git than

    you •Probably... maybe... •I work at AWS •I tweet @jrhunt •I wrote gitshots •I write great commit messages •8 major patches to GIT •All of them rejected.

14. HALP! Wat is git?

15. GIT IS MAGIC •Easy Context Switching •Role-based codelines •Feature based

    workflow •Easy Experimentation

16. Distributed
 Version Control

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20. working directory git add -p files staging area

21. git commit -m "holla" staging area git database

22. Git Saves You From Yourself

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24. DEMO

25. DO YOUR WORK IN BRANCHES!

26. NO REALLY. git checkout -b feature

27. Content Addressable Filesystem

28. git hash-object refs.c sha1(a77458f2f6eb108a90a1cf3d2cc4a771549c05f9)

29. Your Content Is Your Address

30. SHA1 1. Add Data 2. Add More Data 3. Mix

    it all around 4. Get a magic number "unique" (mostly) 160 bits of ADDRESS MATH!

31. BRANCHES ARE REFERENCES TO COMMITS

32. COMMITS ARE POINTERS TO TREES

33. TREES ARE POINTERS TO TREES AND BLOBS

34. BLOBS ARE ZLIB COMPRESSED FILES

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36. DIRECTED ACYCLIC GRAPH

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38. RECAP • Commits -> N pointers to parents, date, metadata

    • Trees -> Point to trees where leaf nodes are blobs • Blobs -> ZLIB compressed files RECAP RECAP

39. THIS IS NOT A TOILET

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41. commit, branch, log, diff, add, etc.

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43. hash-object, cat-file, ls-tree, (un)pack

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45. GIT QUESTIONS?

46. I GIT ANSWERS