title: sudo gem install cocoapods Stuck
body: <p>I can't use sudo gem install cocoapods and it has no response. I have even removed all cocoapods and try again. it is not okay. </p>
  
  <p>Some link in stackoverflow say I need to do like this. It is still not okay.</p>
  
  <pre><code>sudo chown -R $(whoami) /usr/local
  </code></pre>
  
  <p>How shall I do?</p>