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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. --- <div align="center"> <b> <a href="https://tidelift.com/subscription/pkg/npm-path-key?utm_source=npm-path-key&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a> </b> <br> <sub> Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies. </sub> </div>