how to push project folder to github code example

Example 1: git push existing repo

cd existing_folder
git init
git remote add origin https://gitlab.com/abc.git
git add .
git commit -m "Initial commit"
git push -u origin master

Example 2: pushing to github

git add .
git commit -m "First commit"
git push origin master

Example 3: how to add a repository to github

git & github