title: How can I redirect wp-admin to another url
body: <p>How can I redirect user from <code>wp-admin</code> to another custom page, for example I want to redirect this url:</p>
  
  <pre><code>http://example.com/wp-admin
  </code></pre>
  
  <p>to:</p>
  
  <pre><code>http://example.com/custom
  </code></pre>