title: Laravel 5 schedule job every 30 seconds
body: <p>I am using Laravel schedule to run cron jobs.</p>
  
  <p>In my crontab I have added (with correct path to my project):</p>
  
  <pre><code>* * * * * php /path/to/artisan schedule:run &gt;&gt; /dev/null 2&gt;&amp;1
  </code></pre>
  
  <p>Now my App\Console\Kernel.php looks like:</p>
  
  <pre><code>protected function schedule(Schedule $schedule)
  {
          $schedule-&gt;command('investments:calculate_interests')-&gt;everyMinute();
          $schedule-&gt;call('\App\Http\Controllers\UsersController@testEvent')-&gt;everyMinute();
  }
  </code></pre>
  
  <p>Using it like that I successfully run jobs every minute. But how I can change it to run them on every 10 or 20 or 30 seconds?</p>