#include #include main(int argc, char *argv[]) { int r; if(argc != 4) { printf("Usage: mknod file major minor"); exit(1); } r=mknod(argv[1], S_IFCHR|0777, makedev(atoi(argv[2]), atoi(argv[3]))); if(r < 0) { perror("mknod"); exit(1); } }