how to push existing github repository 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: upload new repo to git

echo "# Can-I-Shop-2" >> README.md
git init
git add .
git commit -m "first commit"
git remote add origin https://github.com/username/projectname.git
git push -u origin master