Git and Github: version control for the 21st century

Presented at PyLadies Montreal.

Transcript

1. PyLadies Montréal :: October 22, 2013
   version control for the 21st century
   and
   :
   

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2. about me
   - Wendy Liu
   - Math & CS at McGill
   - 2.5 years experience with Git
   

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3. what is git?
   

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4. what is git?
   version control system!
   

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5. svn/perforce: local vs. remote
   comparison to other systems
   

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6. svn/perforce: local vs. remote
   hg/bzr: faster, more control
   comparison to other systems
   

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7. svn/perforce: local vs. remote
   hg/bzr: faster, more control
   cvs/rcs: no comparison
   comparison to other systems
   

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8. backup_dec_1_2012.zip backup_dec_8_2012.zip backup_dec_15_2012.zip
   backup_dec_22_2012.zip backup_dec_29_2012.zip backup_jan_5_2012.zip
   backup_jan_12_2012.zip backup_jan_19_2012.zip backup_jan_26_2012.zip
   

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9. report_v1.doc report_v2.doc report_v3.doc report_v4.doc
   

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10. keeps track of changes
    enter git.
    

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11. keeps track of changes
    extremely flexible
    enter git.
    

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12. keeps track of changes
    extremely flexible
    developed by linus torvalds
    enter git.
    

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13. keeps track of changes
    extremely flexible
    developed by linus torvalds
    completely free to use (and open source!)
    enter git.
    

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14. keeps track of changes
    extremely flexible
    developed by linus torvalds
    completely free to use (and open source!)
    primarily command-line
    enter git.
    

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15. website
    what is github?
    

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16. website
    collaborative coding, via git
    what is github?
    

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17. website
    collaborative coding, via git
    (mostly) free to use
    what is github?
    

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18. website
    collaborative coding, via git
    (mostly) free to use
    major part of developer ecosystem (esp. OSS)
    what is github?
    

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19. why git?
    

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20. why git?
    diffs
    

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21. why git?
    diffs
    backups
    

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22. why git?
    diffs
    backups
    collaboration
    

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23. what git can do for you
    versioning
    easy collaboration
    blame
    tracking down bugs
    safe experimentation
    statistics
    

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24. what github can do for you
    issue-tracking
    even easier collaboration
    remote backups
    access your files from anywhere
    graphical, easy-to-use UI
    

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25. now: how git works
    

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26. repository
    directory on filesystem
    just metadata (changes)
    manual grouping of changes
    

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27. commit
    group of logically-related changes
    1 or more files (add/delete/modify)
    

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28. staging index
    CHANGES I WANT IN MY NEXT COMMIT
    ALL THE OTHER CHANGES
    

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29. git commit -m 'test'
    CHANGES I WANT IN MY NEXT COMMIT
    ALL THE OTHER CHANGES
    a new commit, with message 'test'
    

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30. CHANGES I WANT IN MY NEXT COMMIT
    ALL THE OTHER CHANGES
    the commit with message 'test'
    (nothing here yet)
    

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31. git demo
    

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32. github demo
    

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33. further resources
    help.github.com
    gitimmersion.com
    git-scm.com/book
    try.github.com
    git man pages (git help, git help [command])
    github.com/Gazler/githug
    

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34. thanks!
    @dellsystem
    

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