title: How to git add a whole folder
body: <p>I'm new to git and I am trying to git add my whole working directory but I receive the error message: </p>
  
  <blockquote>
    <p><strong>fatal</strong>: pathspec 'folder' did not match any files.</p>
  </blockquote>
  
  <p>I'm in the working dir when I do this command, what am I doing wrong?
  Also, is it good practice to commit the whole folder instead of file by file?
  Thank you</p>