Understanding Git — Behind the Command Line

on YouTube ↗55m

" summary

Explains Git as a content tracker whose core is a directed acyclic graph (DAG) of commits where each commit points to a tree of directories and blobs (files), all addressed by SHA-1 hashes; demonstrates low‑level plumbing: git hash-object -w, git cat-file -p, git update-index --add, git write-tree, git commit-tree, update-ref plus normal git add/commit, and shows garbage collection/packfiles (one pack contained eight objects). Emphasizes Git stores full snapshots (not deltas), enables reorder/cleanup with cherry-pick, reset --hard and rebase, and notes the UNIX 2038 timestamp limit (Jan 19 2038).

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" chapters (12)

1. 0:00Start
2. 4:08What Is a Tree
3. 11:40Plumbing Commands
4. 13:20Git Init Command
5. 23:53Unix Epoch
6. 29:56Create a Committee Using the Regular Commands
7. 31:02Create a Branch
8. 33:13Git Commit
9. 34:19Octopus Merge
10. 38:24Garbage Collection
11. 43:29Having a Clear History of Your Source Code Is a Good Thing
12. 44:09How Can You Keep a History Readable

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