title: What does %defattr mean in RPM spec files?
body: <p>While creating RPMs, the RPM spec files have a directive <code>%defattr</code> . I know that it defines the default attributes for the files that are installed by that RPM. If I write the <code>%defattr</code> as below, what does it mean?</p>
  
  <pre><code>%defattr(-testuser, testuser)
  </code></pre>