title: Angular Cli - How do I rebuild my project
body: <p>How do I rebuild my project in Angular.  I build it first with ng build, yet cannot perform that command again as it wont let me change the folder.</p>
  
  <p>I get this error message :
  EPERM: operation not permitted, lstat</p>
  
  <p>Is there another command such as ng build update ? </p>