On Sun, 26 Jun 2011 05:29 +0400, "Mike Korbakov" <mike-...@yandex.ru> wrote: > sorry first link must be > http://www.freebsd.org/cgi/man.cgi?query=nl&apropos=0&sektion=1&manpath=FreeBSD+8.2-RELEASE&format=html > in which we can see: > > STANDARDS > The nl utility conforms to IEEE Std 1003.1-2001 (``POSIX.1''). > > HISTORY > The nl utility first appeared in AT&T System V Release 2 UNIX.
I could be mistaken, but I'm pretty sure nl predates cat -n.
