title: Apply regex on JQ
body: <p>I´m using jq to get a json and get some values.</p>
  
  <p>I have this string </p>
  
  <pre><code>   "arn:aws:ecs:eu-west-1:foo:task/blablabla"
  </code></pre>
  
  <p>And I want to get the substring from task/ and then return just blablabla</p>
  
  <p>For now I have this regex.</p>
  
  <pre><code> (.*task?)\/(.*$)
  </code></pre>
  
  <p>Which give me two groups.</p>
  
  <p>Any idea how using jq I can apply this regex and get the second group?</p>
  
  <p>Regards</p>