I often thought that a cat could be named /bin/cat. After all, many cats seem to enjoy being in boxes or bins!
https://en.wikipedia.org/wiki/Peripheral_Interchange_Program
]CATALOG
And my next dog after the way you warm restart DOS after you hit RESET with Integer Basic ROMs and get thrown into Woz's system monitor:
*3D0G
So probably three-quarters of the people who remembered them in, say, 01990, still remember them. You remember all those guys, and the occasional gal, you saw at computer stores and user group meetings at the time? Most of them are still alive, and most of them still remember them. They're just harder to find because places like HN have filled up with MBAs.
(I remember ]CATALOG but not *3D0G.)
Ed is the standard Unix text editor.