title: what's the cygwin/Windows equivalent of Linux' notify-send
body: <p>Linux has the command <a href="http://manpages.ubuntu.com/manpages/karmic/man1/notify-send.1.html"><code>notify-send</code></a> for sending user notifications to the desktop manager. (In many environments, these show up as pop-ups in the corner of the screen, along with low battery warnings and other system messages.) I use it in monitoring and back-up scripts.</p>
  
  <p>Cygwin doesn't seem to have lib-notify, so is there a Windows equivalent for this command? Web searching has lead me to articles about running batch files from Windows' system tray/notification area, or attempts to clean the system tray up from a batch file, but I haven't found a way to produce unobtrusive user messages from background processes.</p>