$ sudo npm install gulp-uglifycss
$ sudo npm install -g gulp-uglifycss

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

$ sudo npm update gulp-uglifycss

Update package globally,

$ npm install -g gulp-uglifycss

Git clone:

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

$ sudo  npm install -g ./gulp-uglifycss

gulp-uglifycss@1.0.8 /usr/lib/node_modules/gulp-uglifycss

How to remove gulp-uglifycss package :

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

$ sudo npm uninstall gulp-uglifycss

Basic Information of gulp-uglifycss NPM Package: