text: /*
   *	$Id: unistd.h $
   */
  
  #ifndef __UNISTD_H__
  #define __UNISTD_H__
  
  #include <sys/compiler.h>
  #include <sys/types.h>
  
  extern char *environ[];
  #define isatty(fd) fchkstd(fd)
  #define unlink(a) remove(a)
  
  
  /* Archaic version of execl(), used in the earlier C implementations */
  /* At the moment only CP/M is supported with a single "argument", the original fn name was exec() */
  extern int __LIB__ execl (const char *command, const char *args) __smallc;
  
  /* (Work in progress): Execute a command passing the argument structure */
  extern int __LIB__ execv (const char *command, const char *args[]) __smallc;
  
  
  
  #endif
  