title: How do I silently install a 7-zip self-extracting archive to a specific directory?
body: <p>The <a href="https://github.com/downloads/oneclick/rubyinstaller/DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe" rel="noreferrer">Ruby Devkit</a> is a 7-zip based self-extracting archive.</p>
  
  <p>I would like to invoke it silently without having to install 7-Zip to extract the files to a folder of my choosing, so that I can script the installation. I imagine it to be something like:</p>
  
  <pre><code>cmd&gt; DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe /silent /dir="C:\DevKit"
  </code></pre>
  
  <p>But that, of course, doesn't work. What command line flags must I use to silently extract this archive into a folder of my choice?</p>