[Toybox] [Nommu] Week ending June 27ish. - pdksh

[lamiaworks]

pdksh's origin goes all the way back to Digital research's MP/M, the 
multi-user version of CP/M 3.0 and that goes back to the mid-1970's. But 
pdksh only goes back to the early 1980's when CP/M was being overtaken 
by other operating systems and MP/M had a push with the help of others 
to 'deal with the intruders' with the help of others like David Korn. It 
didn't work unfortunately!