Arguments

 

file_spec

   The full file specification of a new image to be activated in the
   child process.
 

argv

   An array of pointers to null-terminated character strings.
   These strings constitute the argument list available to the new
   process. By convention, argv[0] must point to a string that is
   the same as the new process filename (or its last component).
   argv is terminated by a NULL pointer.