Understanding Git — Behind the Command Line
summary
Live demo unpacks Git’s object model step by step: creating blobs with git hash-object, inspecting them with git cat-file, building trees with git write-tree and making a commit by updating refs, showing that every object is a SHA‑1 hash of its content, a commit stores a root tree, metadata, and a parent pointer, and that branches are just cheap refs. The demo shows full-file snapshots, automatic packfile delta compression via git repack, and that unreferenced objects are garbage‑collected — practical, low‑level mechanics and commands.
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chapters (15)
- 0:00Intro
- 1:15Git is hard
- 2:37Git tracks
- 4:24Git history
- 11:25Git Repository
- 22:20Metadata
- 28:38History
- 29:48Commit
- 33:53Delta Chain
- 35:25Counting Objects
- 36:11What is Git
- 39:16Keeping your history readable
- 41:08Freedom of workflow
- 42:13Example
- 49:13Summary
