OK, but at that point it&#x27;s equally possible that it stands for &quot;catharsis&quot; and represents a file, previously being kept inwardly on disk, being released to standard output. The command doesn&#x27;t predate UNIX, so it&#x27;s a very narrow window of time for Ritchie to have gotten it wrong. And I have not seen any claims from the 1970s or 1980s that the command stands for &quot;catenate&quot;.