Re: I'm always pleased when BSD get a mention
TOPS-10, VMS etc. came from a particular school of thought where commands had consistency. So once you had learnt the general format and vocabulary it was generally very easy to either locate the right command for what you were wanting to do and get the parameters right. Obviously, CP/M and PC/MS-DOS borrowed and created a much-simplified command set. Unix was very much counter-culture being intentionally designed for two-finger typists and commands made obscure so you had to read the 'manual'.