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Git basic stanley hsiao 2010_12_15

Git Basic2 provides resources for learning Git including books like Pro Git and tools like TortoiseGit. It discusses chapters from Pro Git including Getting Started and Git Basics. Git Basics is recommended as the chapter to read first to get started with Git. The document also covers understanding git log output, the detached head state, and differences between merging and rebasing branches in Git.

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Git Basic2 Stanley Hsiao 2010.12.15
Caution!! • Note that this is not a step-by-step tutorial • Contains only some concepts and illustrations
Resource • Books – Progit • Online book written by Scott Chacon – The Git Community Book • maintained by Scott Chacon • Interface Tools – http://git-scm.com/tools • TortoiseGit (Windows) – TortoiseGit is a port of the popular TortoiseSVN project to Git.
Pro git http://progit.org/book/ • 1. Getting Started – 1.1 - About Version Control – 1.2 - A Short History of Git – 1.3 - Git Basics – 1.4 - Installing Git – 1.5 - First-Time Git Setup – 1.6 - Getting Help – 1.7 - Summary • 2. Git Basics – 2.1 - Getting a Git Repository – 2.2 - Recording Changes to the Repository – 2.3 - Viewing the Commit History – 2.4 - Option Description of Output – 2.5 - %s Subject – 2.6 - Option Description – 2.7 - Option Description – 2.8 - Undoing Things – 2.9 - Working with Remotes – 2.10 - Tagging – 2.11 - Tips and Tricks – 2.12 - Summary
Git Basics • Chapter 2 • Git Basics • If you can read only one chapter to get going with Git, this is it. – 2.1 - Getting a Git Repository git init, git clone – 2.2 - Recording Changes to the Repository git status, git add, git commit – 2.3 - Viewing the Commit History git log, – 2.4 - Option Description of Output – 2.5 - %s Subject – 2.6 - Option Description – 2.7 - Option Description – 2.8 - Undoing Things git reset – 2.9 - Working with Remotes git remote, git fetch, git push – 2.10 - Tagging git tag, git show, – 2.11 - Tips and Tricks git …. – 2.12 - Summary
Single user version control
Outline • Basic Command of revision control software • Review Branch in git – Understanding git log – Detached Head State • Merge VS. Rebase
Basic Commands generate Soft repository local reba clone pull push checkout update lock add remove move copy merge commit revert bundle ware init branches se file cp Unk [then init / init - fetch checko reba Git clone push branch clone pull now add rm mv ] git merge commit bundle -bare [72] ut se n add[7 3]
Git Basics • Nearly Every Operation Is Local
REVIEW BRANCH IN GIT
Head
Review of Branch
What is the difference between a tag and a branch in git? • From the theoretical point of view: – tags are symbolic names for a given revision. – branches are symbolic names for line of development.
Git overview https://github.com/swem/training-for-using-git/
git log
git log –decorate=full
git log –decorate=full
Understanding git log • refs/heads/master • refs/heads/new_branch • HEAD • refs/remotes/origin/master • refs/remotes/origin/new_branch • tag: refs/tags/v0.1 • tag: refs/tags/v0.2 • Recommend reading especially http://progit.org/book/ch3-5.html
“Detached head” state
“Detached head” state • git checkout – Branchhead Example: git checkout my_bch – Arbitrary commit Example: git checkout 48eeb5 • “Detached head” state
“Detached head” state • Examining an old version without creating a new branch • it means the HEAD file points directly to a commit, not to a symbolic reference.
“Detached head” state it means the HEAD file points directly to a commit, not to a symbolic reference.
“Detached head” state Pros Cons • easy way to check out a • The issue is that you particular version without generally don’t want to having to make up a name work in a detached head for the new branch. environment, because it’s • You can still create a new easy to lose changes. branch (or tag) for this version later if you decide to.
MERGE VS. REBASE
Merge Branch BEFORE AFTER
Rebase Branch BEFORE AFTER
Rebase Branch • Do not rebase commits that you have pushed to a public repository. – http://progit.org/book/ch3-6.html
Multi-user version control
Remote • open source software hosting facilities: – http://en.wikipedia.org/wiki/Comparison_of_ope n_source_software_hosting_facilities • One of these – GitHub
github • SSH channel – Get help with generating ssh keys http://help.github.com/
github
github
git push • Example in http://www.kernel.org/pub/software/scm/git/ docs/git-push.html • git push (remote) (branch): – Example: git push origin my_branch • you have to explicitly push the branches you want to share.
git push • you have to explicitly push the branches you want to share. – That way, you can use private branches for work you don’t want to share, and push up only the topic branches you want to collaborate on.
References • http://progit.org/book/ • http://www.kernel.org/pub/software/scm/git/ docs/user-manual.html

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Git basic stanley hsiao 2010_12_15

  • 1.
    Git Basic2 StanleyHsiao 2010.12.15
  • 2.
    Caution!! • Note thatthis is not a step-by-step tutorial • Contains only some concepts and illustrations
  • 3.
    Resource • Books – Progit • Online book written by Scott Chacon – The Git Community Book • maintained by Scott Chacon • Interface Tools – http://git-scm.com/tools • TortoiseGit (Windows) – TortoiseGit is a port of the popular TortoiseSVN project to Git.
  • 4.
    Pro git http://progit.org/book/ • 1. Getting Started – 1.1 - About Version Control – 1.2 - A Short History of Git – 1.3 - Git Basics – 1.4 - Installing Git – 1.5 - First-Time Git Setup – 1.6 - Getting Help – 1.7 - Summary • 2. Git Basics – 2.1 - Getting a Git Repository – 2.2 - Recording Changes to the Repository – 2.3 - Viewing the Commit History – 2.4 - Option Description of Output – 2.5 - %s Subject – 2.6 - Option Description – 2.7 - Option Description – 2.8 - Undoing Things – 2.9 - Working with Remotes – 2.10 - Tagging – 2.11 - Tips and Tricks – 2.12 - Summary
  • 5.
    Git Basics • Chapter2 • Git Basics • If you can read only one chapter to get going with Git, this is it. – 2.1 - Getting a Git Repository git init, git clone – 2.2 - Recording Changes to the Repository git status, git add, git commit – 2.3 - Viewing the Commit History git log, – 2.4 - Option Description of Output – 2.5 - %s Subject – 2.6 - Option Description – 2.7 - Option Description – 2.8 - Undoing Things git reset – 2.9 - Working with Remotes git remote, git fetch, git push – 2.10 - Tagging git tag, git show, – 2.11 - Tips and Tricks git …. – 2.12 - Summary
  • 6.
  • 7.
    Outline • Basic Commandof revision control software • Review Branch in git – Understanding git log – Detached Head State • Merge VS. Rebase
  • 8.
    Basic Commands generate Soft repository local reba clone pull push checkout update lock add remove move copy merge commit revert bundle ware init branches se file cp Unk [then init / init - fetch checko reba Git clone push branch clone pull now add rm mv ] git merge commit bundle -bare [72] ut se n add[7 3]
  • 9.
    Git Basics • NearlyEvery Operation Is Local
  • 10.
  • 11.
  • 12.
  • 13.
    What is thedifference between a tag and a branch in git? • From the theoretical point of view: – tags are symbolic names for a given revision. – branches are symbolic names for line of development.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
    Understanding git log • refs/heads/master • refs/heads/new_branch • HEAD • refs/remotes/origin/master • refs/remotes/origin/new_branch • tag: refs/tags/v0.1 • tag: refs/tags/v0.2 • Recommend reading especially http://progit.org/book/ch3-5.html
  • 19.
  • 20.
    “Detached head” state •git checkout – Branchhead Example: git checkout my_bch – Arbitrary commit Example: git checkout 48eeb5 • “Detached head” state
  • 21.
    “Detached head” state •Examining an old version without creating a new branch • it means the HEAD file points directly to a commit, not to a symbolic reference.
  • 22.
    “Detached head” state itmeans the HEAD file points directly to a commit, not to a symbolic reference.
  • 23.
    “Detached head” state Pros Cons • easy way to check out a • The issue is that you particular version without generally don’t want to having to make up a name work in a detached head for the new branch. environment, because it’s • You can still create a new easy to lose changes. branch (or tag) for this version later if you decide to.
  • 24.
  • 25.
  • 26.
  • 27.
    Rebase Branch • Donot rebase commits that you have pushed to a public repository. – http://progit.org/book/ch3-6.html
  • 28.
  • 29.
    Remote • open sourcesoftware hosting facilities: – http://en.wikipedia.org/wiki/Comparison_of_ope n_source_software_hosting_facilities • One of these – GitHub
  • 30.
    github • SSH channel – Get help with generating ssh keys http://help.github.com/
  • 31.
  • 32.
  • 33.
    git push • Examplein http://www.kernel.org/pub/software/scm/git/ docs/git-push.html • git push (remote) (branch): – Example: git push origin my_branch • you have to explicitly push the branches you want to share.
  • 34.
    git push • youhave to explicitly push the branches you want to share. – That way, you can use private branches for work you don’t want to share, and push up only the topic branches you want to collaborate on.
  • 35.