[...]
open("/dev/scull0", O_RDONLY)           = 4
fstat(4, {st_mode=S_IFCHR|0664, st_rdev=makedev(253, 0), ...}) = 0
read(4, "MAKEDEV\natibm\naudio\naudio1\na"..., 16384) = 4000
read(4, "d2\nsdd3\nsdd4\nsdd5\nsdd6\nsdd7"..., 16384) = 3421
read(4, "", 16384)                      = 0
fstat(1, {st_mode=S_IFCHR|0600, st_rdev=makedev(3, 7), ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(1, "   7421 /dev/scull0\n", 20)   = 20
close(4)                                = 0
_exit(0)                                = ?