Terry Slattery took time (after 15 years) and wrote a short history of Cisco CLI. I've been involved with Cisco's software (it was remarketed as IOS in mid-nineties) for a few years and for me the CLI as we know it today was one of the best features introduced in IOS release 9.21 (I was ecstatic when I've got my hands on the first code during the beta tests). So now that I know who's responsible, I can only say “Thanks, Terry!”
Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.