ttydev
ttydev = NODEV;
ttydev = sb.st_rdev;
if (!all && ttydev == NODEV && pid == -1 && !Uflag) {
} else if (ttydev != NODEV) {
flag = ttydev;
dev_t ttydev;
dev = ttydev("com0");
dev = ttydev("com0");
cnset(ttydev("fb0"));
cnset(ttydev("fb0"));
dev = ttydev("com0");
dev_t ttydev(char *);
dev = ttydev(cmd.argv[1]);
dev = ttydev(cmd.argv[1]);