Grunt install and npm

Grunt and npm

Node.js is javacsript based environment, whcih can use to create webserver and networked applivcation.
You can also use it to perform helpful tasks on your computer such as concatenating and minifying JavaScript files and 
compiling Sass files into CSS.

NPM is a “package manager” that makes installing Node “packages” fast and easy. A package, also called a module, is just a code library that extends Node by adding useful features. For example, the “request” module simplifies the process of making HTTP requests so you can easily get web resources from other sites.

NPM is installed when you install Node.js®.

https://treehouse.github.io/installation-guides/mac/node-mac.html
https://treehouse.github.io/installation-guides/mac/homebrew

You can follow above 2 links for referring the Node and npm installation.

Once you have installed the node.js and npm. you need to run the below command.

npm install 

npm install will install all modules listed as dependencies in package.json.

Try running the grunt command. If you are getting the error message. Then try to install the grunt in the system.

For installing grunt, please use below command.

npm install -g grunt-cli
 
If you are getting the error, then try by sudo command for getting the admin privilege.
 
sudo npm install -g grunt-cli

This will finish the grunt installation in the project.

Grunt is javascript task runner, it is used to automate the repeated task like minification, compilation, unit testing, linting, etc.
it makes your task more easier., Once you have configured the, task runner will do most of the repeated job.
Hundreds of plugins are available in the grunt ecosystem. many of the task you needed are already available as grunt plugin.