What's the shortest command to find a volume's BSD device name ( /dev/disk*s* )?

Question

What's the easiest way to find out that, for example, /Volumes/Foo lives in /dev/disk0s2 ?

EDIT: mount is probably a more semantically satisfying answer, but it doesn't get much shorter than df

Answer 1

Or df -h, which will show usage as well. diskutil list will show available disks.

Answer 2

Try:

mount

Answer 3

alias a letter to.... than you'll have one letter command