---
layout: page
published: true
noToc: false
noComments: false
noDate: false
title: Fun - os_env.fun — overview
subtitle: Documentation for os_env.fun — overview
description: Documentation for os_env.fun — overview
permalink: /documentation/examples/os_env/
lang: en
tags:
- example
- os_env
---


What it shows
- Reading and writing environment variables from the operating system.

How to run
- export FUN_LIB_DIR="./lib"
- ./build_debug/fun examples/os_env.fun
- Or: fun examples/os_env.fun