title: How to extract this specific text/json *only* using grep
body: <p>So I have this json file that's an output from a  previous command:</p>
  
  <pre><code>{
      "upload": {
          "status": "INITIALIZED", 
          "contentType": "application/octet-stream", 
          "name": "mobile.apk", 
          "created": 1511111178.799, 
          "url": "https://amazonaws.com/arn%358%3Aproject%3A0030e-0a929/uploads/arn%3Aaws%3??/33bgb", 
          "type": "ANDROID_APP", 
          "arn": "arn:aws:devicefarm:us-west-2:588:upload:0000-aaa-bg01-11ab11/1feebbb-1a1a"
      }
  }
  </code></pre>
  
  <p>I want to extract the "arn" value, including the quotes, so the value:</p>
  
  <pre><code>"arn:aws:devicefarm:us-west-2:588:upload:0000-aaa-bg01-11ab11/1feebbb-1a1a"
  </code></pre>
  
  <p>Should be returned. I'll also need a separate command to extract the url value also, so the following needs to be returned:</p>
  
  <pre><code>"https://amazonaws.com/arn%358%3Aproject%3A0030e-0a929/uploads/arn%3Aaws%3??/33bgb"
  </code></pre>
  
  <p>So I need 2 separate commands for these values. I've tried all different combinations of grep and I've not got anything to work yet.</p>
  
  <p>I only want to use grep for the command, my situation won't allow to install any tools.</p>
  
  <p>Thank you!</p>