title: How do I open an Explorer window in a given directory from cmd.exe?
body: <p>I see how to launch <a href="http://ss64.com/nt/syntax-run-commands.html" rel="noreferrer">many other programs</a> from a batch file, but I can't find a command like <a href="http://developer.apple.com/mac/library/documentation/Darwin/Reference/ManPages/man1/open.1.html" rel="noreferrer"><code>open</code></a> on Mac OS X.  Does such a tool exist on Windows?  Powershell, or a Windows API call from an executable would also work.</p>
  
  <p>Or, put another way, how can I invoke Windows default "Open" handler for a file from a batch file or powershell script?</p>