- printf ("Usage: %s [-d /dev/devname] [-i] [-v] [-o plot-file.dat]\n", program_name);
- printf (" -d CD/DVD device name, default is /dev/devname\n");
+ printf ("Usage: %s [-d /dev/devname] [-i] [-v] [-p] [-o plot-file.dat]\n", program_name);
+ printf (" -d CD/DVD device name, default is /dev/cdrom\n");