Listing devices - quick question

[Patton Echols]

I'm writing up my notes for someone who asked about data recovery and 
I'm having a serious brain fade.  It's the part about discovering the 
device that you just plugged in.  I know I can use
$ fdisk -l to list devices or
$ blkid to do the same and more.  But there is something that lists the 
last system events, you run this command, then plug the usb device, then 
run it again and see what got added to the end of the list.  Anyone want 
to throw out the name for an idiot?

-- PE