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Git Kata: Git objects

Objects are stored in <repository>/.git/objects in subfolders matching the first two chars of the sha. fc1da6e8f is therefore the file: .git/objects/fc/1da6e8f.

git cat-file inflates and shows the content of what ever ref you pass it. -p asks cat-file to pretty-print the content of an object.

git ls-tree master . inflates and lists the content of a folder.

Task

  1. Use git log to find the sha of a commit
  2. Locate the file in the .git folder
  3. What is in the file?
  4. Use git cat-file -p <sha> to inflate and view the content.
  5. Use git cat-file to look at the tree referenced in your commit
  6. Use git cat-file to look at the parent commit
  7. Do these commands work in the .git folder? Do you have to be in there?
  8. Compare cat-file looking at a tree object to using ls-tree on a commit
  9. How does it look on an older commit compared to what you have in HEAD?