title: Installing the Eclipse OpenCL plugin without Internet access
body: <p>I: ...</p>
  <ul>
  <li>have some (relatively recent) version of Eclipse</li>
  <li>Want to install the <a href="https://marketplace.eclipse.org/content/opencl-development-tool" rel="nofollow noreferrer">OpenCL development tool plugin</a></li>
  <li>have the Update site URL: <a href="http://p2.ngms.hu/releases/luna" rel="nofollow noreferrer">http://p2.ngms.hu/releases/luna</a></li>
  <li>don't have an Internet connection on the target machine</li>
  <li>can copy files to the target machine</li>
  <li>have another machine, connected to the Internet through a proxy, to work on (but it may not be the same OS distribution, same hardware etc. as the target machine.)</li>
  </ul>
  <p>and I'm failing to manage to install the plugin.</p>
  <p>I've tried <a href="https://mcuoneclipse.com/2014/07/03/replicating-an-eclipse-update-site-for-offline-usage/" rel="nofollow noreferrer">this guide</a> on replicating an update site for offline usage, but - the replication command did not work for me, on a Linux system:</p>
  <pre><code>/opt/eclipse/eclipse -application org.eclipse.equinox.p2.metadata.repository.mirrorApplication -source  http://replicate.me.com/path -destination /path/to/local-mirror
  </code></pre>
  <p>this just started Eclipse.</p>
  <p>If I try to visit the update site URL, I get a &quot;connection reset&quot; message (although, to be honest - I'm behind a proxy, so maybe that's the reason for that.)</p>
  <p>So, how can I download (and install) this plugin?</p>