I wonder what the most user-friendly 1980s command-line interface was.
#Commodore 8-bit machines had some extremely gnarly syntax for doing anything involving disk drives.
#Unix was and remains infamous for extremely non-obvious command and option names.
#MSDOS at least had reasonable-ish command names like COPY and ERASE, but option names have the same problem as Unix.
Was there anything friendlier?