title: Go regex find substring
body: <p>I have a string:</p>
  
  <pre><code>s := "root 1 12345 /root/pathtomyfolder/jdk/jdk.1.8.0.25 org.catalina.startup"
  </code></pre>
  
  <p>I need to grep the version number to a string</p>
  
  <p>Tried,</p>
  
  <pre><code>var re = regexp.MustCompile(`jdk.*`)
  func main() {
  matches := re.FindStringSubmatch(s)
  fmt.Printf ("%q", matches)
  }
  </code></pre>