Command: file -s /dev/{c,dv}d*

/dev/cdrom:  symbolic link to `hdb'
/dev/cdrom1: symbolic link to `hdd'
/dev/cdrw:   symbolic link to `hdb'
/dev/cdrw1:  symbolic link to `hdd'
/dev/dvd1:   symbolic link to `hdd'
/dev/dvdrw1: symbolic link to `hdd'