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Git for-fun-and-productivity
- 1. kartzontech For Fun And Productivity Karthik Sirasanagandla
- 2. kartzontech
- 5. Space Compactness kartzontech Mozilla repo. 12 GB in SVN Mozilla repo. 420 MB in Git
- 9. Git Server kartzontech *Best place to look for to set up git server is http://git-scm.com/book/en/Git-on-the-Server
- 11. kartzontech Any cons? And what's the way out?
- 12. kartzontech • Git Workflow is different • Be ready to UN-LEARN • Un-sophisticated UI clients • Git CLI is cool and friendly. Use It! • Git is not a server by itself. • That’s unlike SVN, CVS, etc. • But, that’s okay - really!
- 14. kartzontech Nearly everything is local Browse logs Compare Diff Local Commits Local Branches
- 17. kartzontech • 40-digit alphanumeric “object name” • look like 70a114563ec375ff9ecf335fdc4ac27027a454b4 • SHA 1 hash of the object contents • SHA 1 is a cryptographic hash function • SHA 1 helps determine object uniqueness SHA - The Foundation
- 18. kartzontech • Blob • file contents • chunk of binary data • doesn’t have any attributes • .. not even file name • renaming file doesn’t change this object • its location independent (in directory tree) • Want to see blob contents? git show <sha_of_blob> 4 Object Types - The Blob
- 19. kartzontech • Tree • represents contents of a (sub-)directory • has pointers to blobs and other (sub-)trees • Want to see Tree contents? git [show | ls-tree] <sha_of_tree> 4 Object Types - The Tree
- 20. kartzontech • Commit • links physical state of tree w/ • a description of how we got there (link to parent) and • why (the commit message) • Want to not just see but examine your Commit? git log --pretty=raw git show -s --pretty=raw <sha_of_commit> 4 Object Types - The Commit
- 21. kartzontech Visualizing Git Object Model Need a Demo?
- 22. kartzontech • Tag • A way to mark your commit as ‘special’ 4 Object Types - Tag Learn in your leisure..
- 24. kartzontech • Copy EXISTING repo. $ git clone <url_of_remote_repo> • Create NEW repo $ mkdir <new_proj_name> $ cd <new_proj_name> $ git init • Check current state of your repo $ git status Kick-startYour Work
- 25. kartzontech Persist to your local repo $ git add [filename | foldername] $ git commit -m <my_message> Modify And Commit
- 26. kartzontech • Rollback change BEFORE staging $ git checkout <file_name> • Rollback change AFTER staging $ git reset HEAD <file_name> $ git checkout <file_name> Modify And Rollback
- 28. kartzontech • Delete a file in repo $ rm <file_name> $ git rm <file_name> $ git commit -m <commit_message> Remove it from my repo!
- 29. kartzontech Hasty Dev, I am.. Instead of adding log files to .gitignore, I hurriedly added them to index (staging area). $ git add -A . $ git status # On branch my_pet_feature # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # new file: errors.log # new file: out.log Now.. what do I do? QUIZ (Shit that happens..)
- 30. kartzontech Don’t you worry! Simply “remove the files from index” $ git rm --cached *.log $ git status # On branch my_pet_feature # Untracked files: # (use "git add <file>..." to include in what will be committed) # errors.log # out.log
- 31. kartzontech
- 32. kartzontech I confess! I not only added but did a local commit as well $ git add -A . $ git commit -m “bad commit” QUIZ (Shittier things happen as well)
- 33. kartzontech No worries!..You are SAFE!!! $ git reset --soft HEAD^ $ git status # On branch my_pet_feature # Changes to be committed: # (use "git reset HEAD <file>..." to unstage) # modified: abc.txt # new file: errors.log # new file: out.log $ git rm --cached *.log $ git status # On branch my_pet_feature # Untracked files: # (use "git add <file>..." to include in what will be committed) # errors.log # out.log Alternatively: $ git reset HEAD^ $ git status # On branch my_pet_feature # Untracked files: # (use "git add <file>..." to include in what will be committed) # errors.log # out.log
- 34. kartzontech
- 36. kartzontech
- 37. kartzontech The Routine 1. Show me latest commits git log 2. Show me the last 2 commits git log -2 3. Show me the patch introduced with each commit git log -p 4. Show me just the commit messages git log --pretty=oneline git log --oneline
- 38. kartzontech The Fun Stuff 1. Show me the commits for last 2 weeks git log --since=2.weeks 2. Show me the commits before 3 months git log --before=3.months 3. Show me the commits authored by ‘karthik’ only git log --author=karthik 4. Show me just the commit where the commiter is ‘karthik’ git log --committer=karthik
- 39. kartzontech QUIZ: Do Try It At Home :) 1. Show me commits made during the first two days of this week git log _______________________ 2. Show me the commits made since the last half hour git log _______________________ 3. Show me the commits authored by ‘karthik’ for the last 10 days git log _______________________ 4. Show me just the commits where the commiter is ‘karthik’ and author is ‘ganesh’ git log _______________________ 5. I’ve a commit (with sha a1fix) to fix a high priority bug in Production. I need to merge these changes in other developmental branches as well. What is the efficient way to do it? 6. I’ve made some really bad local commits in my feature branch. Can I undo it?
- 40. Git Server kartzontech git init --bare new_repo_name.git Client 1: git remote add origin <url> git push origin master git clone <url> Client 2:
- 41. kartzontech Resources and Recommendations 1. Pro Git by Scott Chacon 2. http://git-scm.com/book (FREE online version of Pro Git) 3. http://git-scm.com/docs 4. http://try.github.io (Got 15 minutes and want to learn Git?) 5. Git in the Trenches by Peter Savage (http://cbx33.github.io/gitt/) 6. https://git.wiki.kernel.org/index.php/GitSvnComparsion 7. http://blog.jessitron.com/
- 42. kartzontech I would really appreciate your feedback... Please do feel free to drop a note at SpeakerRate (http://speakerrate.com/talks/25891-git-for-fun-and-productivity)