$ sudo npm install gulp-concat-css
$ sudo npm install -g gulp-concat-css

If want to update the gulp-concat-css package execute the command as below,

$ sudo npm update gulp-concat-css

Update package globally,

$ npm install -g gulp-concat-css

Git clone:

$ sudo  git clone https://github.com/rektide/gulp-concat-css.git

$ sudo  npm install -g ./gulp-concat-css

gulp-concat-css@2.3.0 /usr/lib/node_modules/gulp-concat-css

How to remove gulp-concat-css package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall gulp-concat-css

Basic Information of gulp-concat-css NPM Package: