Ingo Schwarze wrote: > su(I) goes back all the way to v1: (...) It wasn't in v0 PDP-7 UNIX though: > https://www.tuhs.org/Archive/Distributions/Research/McIlroy_v0/UnixEditionZero.txt
>From that text file's Introduction: >> Besides the system proper, the major programs available under >> UNIX are an assembler, a text editor based on QED, a symbolic >> debugger for examining and patching faulty programs, and "B", a >> higher level language resembling BCPL. The then newly-invented B. :) No, not C, B. Ancestral note: Machine code begat assembly; and assembly begat Speedcoding; and Speedcoding begat Fortran and his brethren; and Fortran begat Algol and his son. And Algol the Younger begat CPL; and CPL begat BCPL; and at the dawn of the Age of Unix, BCPL begat B, of whom was born C, which is called with cc, and C sys-compilst. (with apologies to Matthew the Evangelist)
