title: npm "failed to parse json"
body: <p>When I'm trying to install express with npm I always get the following error:</p>
  
  <pre><code>Failed to parse json
  No data, empty input at 1:1
  File: /root/.npm/inherits/2.0.1/package/package.json
  Failed to parse package.json data.
  package.json must be actual JSON, not just JavaScript.
  
  This is not a bug in npm.
  Tell the package author to fix their package.json file. JSON.parse
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <pre><code> sudo npm install -g express
  </code></pre>
  
  <p>OS is Ubuntu 12.04 (precise) armhf</p>