Here’s another angle on Perl, perhaps more on topic for TUHS. Let’s accept for a minute
that Perl filled the void between C and shell scripts, and that there was a latent need
for a scripting language like this on Unix.
The shell, awk, sed, etc. had arrived at more or less fully formed versions by 1980. Perl
(and TCL) did not appear until the very end of the 1980’s. What filled the gap in that
decade, if anything?
Ancient Unix has ‘bs’
https://en.wikipedia.org/wiki/Bs_(programming_language) but this
seems to have had very little use.
Paul