That will install a version of OCaml and the Findlib add-on and OPAM package manager.
- If you're using Ubuntu "Utopic" (14.10), there's [a note on the OPAM home page](https://github.com/ocaml/opam)
+ If you're using Ubuntu "Utopic" (14.10), there's [a note on the OPAM home page](https://opam.ocaml.org/doc/Install.html)
warning that its version of OPAM is broken, and not to use it. Here's how you can get (OCaml and) OPAM from a newer repository:
sudo apt-get install -y software-properties-common