title: Run bash script before build started
body: <p>I have a parent pom file which declares some modules, like</p>
  
  <pre><code>&lt;modules&gt;
      &lt;module&gt;execution&lt;/module&gt;
      &lt;module&gt;model&lt;/module&gt;
  &lt;/modules&gt;
  </code></pre>
  
  <p>The thing is there is a bash script <code>bootstrap.sh</code> on the same level as the parent <code>pom.xml</code> which I want to execute before the builiding of the modules listed above is started. </p>
  
  <p>Is it possible to do so with maven? Or there is another way to have the <code>bootstrap.sh</code> executed before the compilation of the modules begins.</p>