ftok.c

让你了解Unix进程间的通信是如何实现的

#include	"unpipc.h"

int
main(int argc, char **argv)
{
	struct stat	stat;

	if (argc != 2)
		err_quit("usage: ftok <pathname>");

	Stat(argv[1], &stat);
	printf("st_dev: %lx, st_ino: %lx, key: %x\n",
		   (u_long) stat.st_dev, (u_long) stat.st_ino,
		   Ftok(argv[1], 0x57));

	exit(0);
}