Shadow file was definitely from quite a while ago. Can't remember exact date, but might have been around time of SVR4 intro. I know because I remember going "

Shadow file was definitely from quite a while ago. Can't remember exact date, but might have been around time of SVR4 intro. I know because I remember going "ugh", but without investigating the reason why it (shadow) was introduced :) - which was of course wrong on my part.