title: Using PowerShell variable for example in FTP.exe
body: <p>How do you use powershell variables when you run program in it? Is it simply not possible?</p>
  
  <p>Example:</p>
  
  <pre><code>$url = "test.com"
  ftp
  ftp&gt; open $url
  
  Unknown host $url.
  </code></pre>