title: xmlstarlet sel output new line between values
body: <p>I have the following XML</p>
  
  <pre><code>&lt;process id="test"&gt;
  
  &lt;/process&gt;
  &lt;process id="test2"&gt;
  
  &lt;/process&gt;
  </code></pre>
  
  <p>I do get the correct values from the attributes but I want to have them separated on by a new line for further processing.</p>
  
  <p>When using the command </p>
  
  <pre><code>xmlstarlet sel -t -v "count(process/@id" "example.xml)"
  </code></pre>
  
  <p>I can see the two are separated because it does return 2</p>
  
  <p>The command used to  retrieve the attributes is the following</p>
  
  <pre><code>xmlstarlet sel -t -v "process/@id" "example.xml"
  </code></pre>
  
  <p><strong>Question :</strong> </p>
  
  <p>Can the output be returned with a new line for each attribute?
  If not could it be done with xmllint?</p>