how to add a git remote to an existing project code example

Example 1: 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

Example 2: turn a folder into a git repo

$ git filter-branch --prune-empty --subdirectory-filter FOLDER-NAME  BRANCH-NAME 
  # Filter the specified branch in your directory and remove empty commits
  > Rewrite 48dc599c80e20527ed902928085e7861e6b3cbe6 (89/89)
  > Ref 'refs/heads/BRANCH-NAME' was rewritten

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Misc Example