title: System.getProperty returns null for defined property
body: <p>I have a property <code>TOOLS_DIR</code> that i exported in bash</p>
  
  <p>I have the following line in my java file:</p>
  
  <pre><code>String toolsDir = System.getProperty("TOOLS_DIR");
  </code></pre>
  
  <p>Why is this returning null? is the a compatibility issue with linux or something?</p>