/sys$common/syshlp/helplib.hlb CC, Run-time functions, system  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Passes a given string to the host environment to be executed by a
  command processor.  This function is nonreentrant.

  Syntax:

       #include <stdlib.h>

       int system (const char *string);