On Fri, Jan 9, 2015 at 3:57 PM, Ronald Natalie <ron@ronnatalie.com> wrote:
The symbol table was commonly used, but that was not so good if you didn't boot from /unix.

IIRC that we stuffed the pathname that we booted with somewhere, so that ps could find it.   All of this is very hazy now, too many different UNIX systems and different hacks over the years ;-)