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Git

Questions

  • What is git?
  • What is the difference between Git, GitHub and GitLab?
  • What are 3 areas: Working directory, Staging area, Repository?
  • Branches
    • What is a branch?
    • Why do we need branches?
    • What does it mean to create a branch and delete a branch (what happens)?
    • How to view the list of branches?
    • How to change a branch?
    • How to create a branch?
    • How to rename a branch?
    • How to delete a branch?
  • What is the .gitignore file for?
  • git config: what allows you to do and what are the three configuration levels?
  • What they do, how and why to use the commands:
    • add
    • commit
      • How and under what conditions can a commit be made without explicitly writing git add before it?
      • How to write a message for a commit without opening an editor?
    • push
    • fetch
    • merge
      • What is fast-forward merge?
      • What do the --squash and --no-ff flags do?
    • pull
  • What is a Pull Request (or Merge Request)?
  • How to see the history of commits?
  • Talk about the object model (blob, tree, commit, tag) and .pack files.
  • What is "The Three Trees" (The HEAD, The Index, The Working Directory)?
  • How to undo changes? Where is which method worth applying? Tell in this context about the commands:
    • checkout
    • reset
    • revert
      • How to reverse merge commit?
      • How to find out the parents of a merge commit?
    • clean
    • rm
  • How can I change the history of commits? Where is which method worth applying? Tell in this context about the commands:
    • commit with the flag --amend
    • cherry-pick
    • fitler-branch
    • rebase
      • What is an interactive rebase mode? What does he allow to do?
      • What are the dangers when using rebase?
    • What they do, how to use, and when commands are useful:
      • stash
      • reflog
      • bisect
  • How to cancel a merge commit?
  • What are HEAD and detached HEAD? What do HEAD ^, HEAD ~, HEAD @ {1} mean?
  • What is Git flow, what examples do you know?

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