9.  Appendix A

9.1.  read_8192

#define	BUFSIZ 8192
main( argc, argv)
char **argv;
{
	char buf[BUFSIZ];
	int i, j;

	j = open(argv[1], 0);
	for (i = 0; i < 1024; i++)
		read(j, buf, BUFSIZ);
}

9.2.  write_4096

#define	BUFSIZ 4096
main( argc, argv)
char **argv;
{
	char buf[BUFSIZ];
	int i, j;

	j = creat(argv[1], 0666);
	for (i = 0; i < 2048; i++)
		write(j, buf, BUFSIZ);
}

9.3.  write_8192

#define	BUFSIZ 8192
main( argc, argv)
char **argv;
{
	char buf[BUFSIZ];
	int i, j;

	j = creat(argv[1], 0666);
	for (i = 0; i < 1024; i++)
		write(j, buf, BUFSIZ);
}

9.4.  rewrite_8192

#define	BUFSIZ 8192
main( argc, argv)
char **argv;
{
	char buf[BUFSIZ];
	int i, j;

	j = open(argv[1], 2);
	for (i = 0; i < 1024; i++)
		write(j, buf, BUFSIZ);
}