title: What does `echo prefix = ~/.node >> ~/.npmrc` mean?
body: <p>I'm reading this <a href="https://stackoverflow.com/a/18277225/3290121">stackoverflow answer</a> on running <code>yo</code> and <code>npm</code> without <code>sudo</code> by saving their results in <code>~/.node</code>. </p>
  
  <p>It uses <code>echo prefix = ~/.node &gt;&gt; ~/.npmrc</code>, and I'd like to know what each symbol means and how they work together in this case.</p>