title: Decompile Linux shell commands
body: <p>This question is reverse of <a href="https://stackoverflow.com/questions/13909141/linux-to-define-custom-shell-command">Linux to define Custom Shell Command?</a> </p>
  
  <p>I know we can read the documentation about most of the commands using man/info/help/?.
  Is there any way to "decompile" any shell command and know how it executes.</p>