#    
## Overview
In Ruby, the **`ENV[name]`** method is used to return the value for the environment variable `name`. If it does not exist, it returns nothing. If the `name` is invalid, it throws an error.
## Syntax
``` ruby
ENV[name]
```
## Parameters
* `name`: This is the name of the environment variable we want to get the value of.
## Return value
It returns the value of the environmental variable `name`. If it's not found or if it doesn't exist, it returns nothing.
## Code example


# create some environment variables
ENV["G"] = "Google"
ENV["N"] = "Netflix"
ENV["A"] = "Apple"
ENV["A"] = "Amazon"
ENV["M"] = "Meta"
ENV["FOO"] = ""

# get values of some environment variables
puts ENV["G"]
puts ENV["M"]
puts ENV["FOO"]
puts ENV["A"]

# 
## Explanation
* **Line 2–7**: We create some environment variables.
* **Line 10–13**: We print the values of the environment variables to the console.

What is the ENV[name] method in Ruby?

Returns value of an environment variable by name; returns nothing if not found or invalid.