Before I got hooked on UNIX in 1977, I used a Univac Exec8 system.
You “cataloged” (created) a file with the @CAT command.
Other, file operations were done by the File Utility Routine/Program 
Utility Routine:  FURPUR
(sort of like pip on steroids).

I decided that if I ever got a CAT, it would be named FURPUR.   That 
happened when I was working for Rutgers.   Not having any UNIVACs 
around, the name escaped notice until the EE department hired a guy from 
the University of Maryland who says “You have a cat named FURPUR?”