how to add git to existing folder code example

Example: add github repo

create a new repository on the command line
echo "# {Repo Name}" >> README.md
git init
git add README.md
git commit -m "first commit"
git branch -M main
git remote add origin https://github.com/cdcdianne/ReactJS-TheMovieDB.git
git push -u origin main
                
push an existing repository from the command line
git remote add origin https://github.com/cdcdianne/ReactJS-TheMovieDB.git
git branch -M main
git push -u origin main