title: Rewriting multiple wordpress installs on the same domain
body: <p>I have two Wordpress installations I need to serve:</p>
  
  <ul>
  <li><code>/</code> to <code>/var/www/sales</code></li>
  <li><code>/blog/</code> to <code>/var/www/blog</code></li>
  </ul>
  
  <p>There are a couple caveats:</p>
  
  <ol>
  <li><code>/</code> is a brand new installation.</li>
  <li><code>/blog</code> is being migrated over from another server.</li>
  </ol>
  
  <p>We're using Apache 2 with a basic (default?) configuration to serve files from <code>/var/www/</code>.</p>
  
  <p>How do we server these applications so that legacy <code>/blog</code> URLs are served exactly the same as they were (i.e <code>/blog/category/yada</code> -> <code>/blog/category/yada</code>), while <strong>all other requests</strong> are handled by the brand new installation.</p>