zlacker

In the earliest references, it was "concatenate". It wasn't until 7th edition UNIX (1979) that "catenate" was given.

References:

- 1971 draft (pre 1st edition) of the paper that would become the well-known 1974 CACM UNIX paper (earliest documentation on `cat` that I can find): https://www.tuhs.org/Archive/Distributions/Research/McIlroy_... (tune in on page 28)

- 6th edition cat(1) man page (1975): http://man.cat-v.org/unix-6th/1/cat

- 7th edition cat(1) man page (1979): http://man.cat-v.org/unix_7th/1/cat

>>LukeSh+(OP)
Latin root word "catena", meaning "chain".

>>swoopi+IR1
Latin root "con-" ("com-") meaning "with," or "together." As in, "concatenate" means something like, "chain together."

https://www.etymonline.com/word/com-

https://www.etymonline.com/word/concatenate