git

Updating a repository from the command-line.

References

github starter course
github cli -- this ("gh") is not the same as "git"
- if you're on a Mac, "git" should already be installed

$ git clone https://github.com/YOUR-USERNAME/YOUR-REPOSITORY

References:

After you make a change in to your local repository, you commit the changes and add a message

$ git commit . -m "I made a small but super-important change to such and such."

To check the status of current repo

$ git status

To review the commit history

$ git log

To checkout a previous commit

$ get checkout <tag/branch/commit id>

To reset to a previous commit (and lose everything since then!)

$ get reset --hard <tag/branch/commit id>

References:

Branches allow you to develop outside the main branch. This is good for experimenting and/or collaborating.

$ git branch
- list branches, including current branch
- default branch is usually "main"
- if you haven't created any branches, that'll be the only one
$ git branch demo
- create the "demo" branch
$ git checkout demo
- switch to the demo branch
You need to specify the upstream for the branch before you can "push" or "pull"
We're not going to be using the workflow for branches, at least not now.

To merge a branch

$ git commit . -m "I made a such-and-such a change"
$ git checkout main
$ git merge demo

References:

You update the repository by "pushing to origin". This is okay if you're the only one working on the project.

$ git push origin main

If you've made a change, then you need first to commit

$ git commit . -m "I've made a such-and-such a change"  
$ git push origin main