https://gruntjs.com/getting-started
Grunt and Grunt plugins are installed and managed via npm, the Node.js package manager. Grunt 0.4.x requires stable Node.js versions >= 0.8.0.
Before setting up Grunt ensure that your npm is up-to-date by running npm update -g npm (this might require sudo on certain systems).
If you already have installed Grunt and are now searching for some quick reference, please checkout our Gruntfile example and how to configure a task.
Using Grunt 0.3? Please see Grunt 0.3 Notes
In order to get started, you‘ll want to install Grunt‘s command line interface (CLI) globally. You may need to use sudo (for OSX, *nix, BSD etc) or run your command shell as Administrator (for Windows) to do this.
npm install -g grunt-cliThis will put the grunt command in your system path, allowing it to be run from any directory.
Note that installing grunt-cli does not install the Grunt task runner! The job of the Grunt CLI is simple: run the version of Grunt which has been installed next to a Gruntfile. This allows multiple versions of Grunt to be installed on the same machine simultaneously.
Grunt: The JavaScript Task Runner
原文：https://www.cnblogs.com/chucklu/p/14147157.html