title: is Shell scripts execution synchronous?
body: <p>By default Shell scripts execution is synchronous in behaviour?</p>
  
  <pre><code>Script1
  Script2
  </code></pre>
  
  <p>I have a script1 which will take more than 4 mins to complete and the next job is dependant on this.(Similar to producer and consumer problem).</p>
  
  <p>Wanted to know whether the script2 waits till script1 complete the execution.</p>