title: Run a remote command on all Jenkins slaves via Masters's script console
body: <p>I want to run same shell command (very simple shell commands like <code>ls</code>) on all the UNIX slaves 
  which are connected to the master by using the master's script console.</p>
  
  <p>How can I do this using groovy?</p>
  
  <p>Want to do something like this: <a href="https://wiki.jenkins-ci.org/display/JENKINS/Display+Information+About+Nodes">Display Information About Nodes</a>
  but instead of displaying information, I want to also run some simple UNIX commands on each slave and print the results.</p>