History of Programing Languages in 1 Sentence
one guy, works with unix tools grep sed bash etc, got fed up. Tried to improve it. that's the gist of perl history.
the history of python is, one guy, worked with ABC lang, got fed up, tried to improve it, and begot python, then think it's greatest lang.
the history of ruby is, Matz saw perl, thought it's powerful but syntax bad, and want to improve it, with emacs lisp influence.
the history of PHP is, a kid created his Pretty Home Page ~1997, CGI with perl scripts. then it became PHP.
these in contrast to ocaml, which has origin in theorem proving, the heart of compute science.