Difference between ${my_variable} and $my_variable in a Jenkins project
<p>Is there a difference when using variables in a Jenkins project between this:</p>

<p><code>node index.js ${arg}</code></p>

<p>and this:</p>

<p><code>node index.js $arg</code></p>

<p>Where arg is a parameter for the project.</p>

<p><strong>Update:</strong>
Interesting to note that it's not Jenkins-specific.</p>

<p>I think this question should remain as others may assume it's something to do with Jenkins.</p>