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			# path-key [![Build Status](https://travis-ci.org/sindresorhus/path-key.svg?branch=master)](https://travis-ci.org/sindresorhus/path-key)

			> Get the [PATH](https://en.wikipedia.org/wiki/PATH_(variable)) environment variable key cross-platform

			It's usually `PATH`, but on Windows it can be any casing like `Path`...


			## Install

			```
			$ npm install path-key
			```


			## Usage

			```js
			const pathKey = require('path-key');

			const key = pathKey();
			//=> 'PATH'

			const PATH = process.env[key];
			//=> '/usr/local/bin:/usr/bin:/bin'
			```


			## API

			### pathKey(options?)

			#### options

			Type: `object`

			##### env

			Type: `object`<br>
			Default: [`process.env`](https://nodejs.org/api/process.html#process_process_env)

			Use a custom environment variables object.

			#### platform

			Type: `string`<br>
			Default: [`process.platform`](https://nodejs.org/api/process.html#process_process_platform)

			Get the PATH key for a specific platform.


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