Regarding the lack of a CLI in Mac OS/System 7 as mentioned in the preface: There was the MPW shell, basically an extended C shell. It was available for free, b

Regarding the lack of a CLI in Mac OS/System 7 as mentioned in the preface: There was the MPW shell, basically an extended C shell. It was available for free, but had to be installed as an extra. (It came as part of the Macintosh Programmer's Workshop [0], but could be run stand-alone.) – Mentioning it just to get the word out. :-) [0] https://en.wikipedia.org/wiki/Macintosh_Programmer%27s_Workshop https://en.wikipedia.org/wiki/Macintosh_Programmer%27s_Works...