$ sudo npm install gulp-imagemin
$ sudo npm install -g gulp-imagemin

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

$ sudo npm update gulp-imagemin

Update package globally,

$ npm install -g gulp-imagemin

Git clone:

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

$ sudo  npm install -g ./gulp-imagemin

gulp-imagemin@4.0.0 /usr/lib/node_modules/gulp-imagemin

How to remove gulp-imagemin package :

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

$ sudo npm uninstall gulp-imagemin

Basic Information of gulp-imagemin NPM Package: