git init, the file was not being tracked by Git.
git add .
Readme.md, you use
git add Readme.md.
git commit -m "first commit"command.
git committells Git that all the files staged are ready to be committed so it is time to take a snapshot.
-m "first commit"is the commit message.
-mis shorthand for message while the text inside the parenthesis is the commit message.
git remote add origin https://github.com/ykang/BDE2022.git
git branch -M main
git push -u origin main
main, you can open a pull request.