Source : Free On-Line Dictionary of Computing

pdksh
     
        Version 4.9
     
        interpreter
     
        Simon J. Gerraty 
     
        comp.sources.misc volume 4
     
        It is not intended to be the ultimate shell but rather a
        usable ksh work alike.
     
        conformance:	Almost identical to ksh88, but missing arrays
     
        E-mail: Simon J Gerraty  (zen.void.oz.au
        is down)
     
        ports:		Sun, 386bsd, ?
     
        1993/10/11