Yes. It is confirmed by a change in the init man page between v6 and
v7. This can be seen in the TUHS archive.
On Fri, Jan 20, 2023 at 5:46 PM ron minnich <rminnich(a)gmail.com> wrote:
I am trying to remember when fd 2 (aka stderr) became a thing. I have a vague memory that
it was post-v6 but that may be way off.