I'm looking for Linux ports of historic Bourne shell versions (other than the Heirloom shell, which implements the SVR4/SVID3 level of the shell). For curiosity and research, I want to dig into the internals of historic shell code.
Specifically: I'm looking for historic versions of the Bourne shell that have been ported to Linux. I'm not looking for modern reimplementations, "Bourne Compatible shells", "Bourne Again shell", "C-shell/T-C-shell", or "Korn shell".
thanks.
jcyang.