Here's a preview from my zine, Oh Shit! Git!! If you want to see more comics like this, sign up for my saturday comics newsletter or browse more comics!
read the transcript!
Let’s start with some fundamentals! If you understand the basics about how git works, it’s WAY easier to fix mistakes. So let’s explain what a git commit is!
Every git commit has an id like 3f29abcd233fa, also called a SHA (“Secure Hash Algorithm”).
A SHA refers to both:
- the changes that were made in that commit (see them with git show)
- a snapshot of the code after that commit was made
No matter how many weird things you do with git, checking out a SHA will always give you the exact same code. It’s like saving your game so that you can go back if you die You can check out a commit like this:
git checkout 3f29abk
SHAS are long but you can just use the first 6 chars
This makes it way easier to recover from mistakes!
person at 10 am: ok, let’s commit, that’s a2992b
person at 11 am: I really screwed up this file, let’s go back to the version from a2992b
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