title: shell scripts use & using multicore？
body: <p>I am now using GNU parallel in company's project,I wonder if a shell function written like this will use the multicore?</p>
  
  <pre><code>shell_function arg1 arg2 &amp;
  
  shell_function arg3 arg4 &amp;
  
  shell_function arg5 arg6 &amp;
  </code></pre>
  
  <p>this will using multicore?</p>