In the earliest references, it was "concatenate". It wasn't until 7th edition UNIX (1979) that "catenate" was given. References: - 1971 draft (pre 1st editio

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_v0/UnixEditionZero-OCR.pdf 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 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 http://man.cat-v.org/unix_7th/1/cat