title: Powershell set a variable and print but nothing
body: <pre><code>SET ML_PATH=E:\Workspace\Handson-ml2
  echo $ML_PATH
  </code></pre>
  <p>printed nothing.</p>
  <pre><code>echo &quot;ML_PATH = $ML_PATH&quot;
  </code></pre>
  <p>printed just:<br>
  ML_PATH =</p>
  <p>How could i set a variable in powershell and print the variable like echo of linux?</p>