title: Spark: Trying to run spark-shell, but get 'cmd' is not recognized as an internal or
body: <p>I'm trying to install Spark on my Windows desktop. Everything should work fine, but I get an error "'cmd' is not recognized as an internal or external command... "</p>
  
  <p>I installed Scala, Java JDK and unzipped Spark tgz in C:\, but for some reason can't get Spark to start in cmd. Any ideas? </p>
  
  <p><img src="https://i.stack.imgur.com/k9qru.png" alt=""></p>