Intro to Git and GitHub
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Are you curious what Git and GitHub are? Let Matthew McCullough of GitHub show you in just a few short minutes and a series of instructive graphics.
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Intro to Git and GitHub
- 1. Introduction to Git & GitHub by Matthew McCullough
- 8. a brief history of Git
- 10. “Cool kids” version control system
- 11. Open Source
- 12. bash scripts ☛ C code
- 13. ≉
- 15. I'm an egotistical bastard, and I name all my projects after myself. First Linux, now git. -Linus Torvalds “ ”
- 16. GitHub a RIA for Git
- 17. Social coding, within the Enterprise
- 19. Version control as a virtual appliance
- 21. Desktop tools as HTML5 components
- 23. In-browser syntax highlighted code editing
- 25. Conversations on proposed code changes
- 28. setting up a Git Repo
- 29. No daemon
- 30. No special repo area
- 32. > cd myproj > git init Initialized empty Git repository in /stuff/myproj/.git/
- 34. Typical SCMs use deltas
- 35. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B
- 36. CVS, Subversion, darcs & Mercurial
- 38. Checkin Checkin Checkin Checkin Checkin Checkin Checkin Checkin Checkin Checkin Checkin Delta storage gets slower as the history of a file gets longer
- 39. Git uses Directed Acyclic Graphstorage
- 40. cp -r srcfolder srcfolder.prev
- 41. Copy of the entire tree per checkin
- 42. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 43. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 44. hardlinks to existing identical blobs
- 45. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 46. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 47. zlib deflates every blob at commit
- 48. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 49. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 50. zlib deflates entire repo
- 51. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 52. v1 v2 v3 v4 File A File B File C File A File B File B File C v5 File A File BFile B File A File A File C File C File C
- 53. 2100 MBbecame 205 MB Act I
- 54. Add and Commit
- 58. > git add <FILENAME>
- 60. > git status # On branch master # Initial commit # Changes to be committed: # (use "git rm --cached <file>..." to unstage) # new file: myfile.txt
- 62. > git commit -m”<MESSAGE>” [master (root-commit) 498cc44] My first commit 1 files changed, 5 insertions(+), 0 deletions(-) create mode 100644 myfile.txt
- 66. > git branch <BRANCHNAME>
- 70. > git checkout <BRANCHNAME> Switched to branch 'mybranch'
- 75. 9AB223D28B1AA46EF1780B22F304982E39872C34 <html> <body> <p>This is a test</p> <img src="http://ai.com/ icon.gif"> </body> </html>
- 76. 9AB223D28B1AA46EF1780B22F304982E39872C34 <html> <body> <p>This is a test</p> <img src="http://ai.com/ icon.gif"> </body> </html>
- 77. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 78. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 79. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 80. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 81. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 82. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 83. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 84. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 85. tree tree: 7e8b1 web blob: 9ab16 index.html a10b3 tree blob: 8d162 logo.jpg blob: 51d22 draw.js 7e8b1commit tree: a10b3 parent: nil author: Fird committer: Matthew message: Major refactoring of the web content. c67db blob<html> <body></body> </html> 9ab16 blob //Some more javascript var renderSize 51d22 blob 7D 8D B3 7F BD 12 9F E9 7B 78 9D 3F 5C A6 72 CB 8d162
- 86. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 87. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 88. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 89. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 90. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 91. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 92. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 93. v1 v2 v3 commit tree: 9a87b parent: nil author: Fird committer: Matthew message: Major refactoring of the Javascript rendering engine. c67db commit tree: b22c1 parent: c67db author: Tim committer: Fird message: Minor update to HTML 9bd21 commit tree: b22c1 parent: 9bd21 author: Johnny committer: Joe message: New language transations 1c2d7
- 95. developer A
- 96. developer A developer B
- 97. developer A developer B
- 98. developer A developer B
- 99. blessed repo developer A developer B
- 118. Git’s notable users
- 125. Introduction to Git & GitHub by Matthew McCullough