[FIXED] How to retrieve all available environment variables?

Issue

Is there a way in OCaml to retrieve all available environment variables?

The OCaml stdlib provides the following in the Sys module:

val getenv : string -> string

But it only show if an env var is available. Is there a way to list all variables in the environment?

Solution

You need to use Unix.environment from the unix library (distributed with the OCaml system). Example:

>   ocaml unix.cma
        OCaml version 4.03.0

# Unix.environment ();;
- : string array = ...

Answered By - Daniel Bünzli

Answer Checked By - Clifford M. (PHPFixing Volunteer)