ocamllex -version (return code: 0)
The OCaml lexer generator, version 4.04.0
ocamllex --help (return code: 0)
usage: ocamllex [options] sourcefile
-ml Output code that does not use the Lexing module built-in automata interpreter
-o <file> Set output file name to <file>
-q Do not display informational messages
-v Print version and exit
-version Print version and exit
-vnum Print version number and exit
-help Display this list of options
--help Display this list of options