Instructions?

How do you use this program, link it against `dietlibc`, and test it?

```
$ ./getty
usage: getty 1
       getty vc/1
       getty /dev/tty1
$ ./getty 1
getty: could not chown/chmod tty device
$ ./getty vc/1
getty: could not chown/chmod tty device
$ ./getty /dev/tty1
getty: could not chown/chmod tty device
```