System Level I/O Functions in the C Library
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	access		access(path, amode)

*	close		close(fildes)

*	creat		creat(path, mode)

	dup		dup(fildes)

	fcntl		fcntl(fildes, cmd, arg)

	fstat		fstat(fildes, buf)

	ioctl		ioctl(fildes, request, arg)

*	lseek		lseek(fildes, offset, where)

*	open		open(path, oflag, mode)

*	read		read(fildes, buf, nbytes)

	stat		stat(path, buf)

*	unlink		unlink(path)

*	write		write(fildes, buf, nbytes)


	* indicates a minimal set of I/O functions required for all systems.



Additional I/O functions defined in Unix(tm) include:

	dup2, link, lock, mknod, mount, seek, sync, tell, umask, umount.