$ sudo npm install paypal-rest-sdk
$ sudo npm install -g paypal-rest-sdk

If want to update the paypal-rest-sdk package execute the command as below,

$ sudo npm update paypal-rest-sdk

Update package globally,

$ npm install -g paypal-rest-sdk

Git clone:

$ sudo  git clone https://github.com/rektide/paypal-rest-sdk.git

$ sudo  npm install -g ./paypal-rest-sdk

paypal-rest-sdk@1.7.1 /usr/lib/node_modules/paypal-rest-sdk

How to remove paypal-rest-sdk package :

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

$ sudo npm uninstall paypal-rest-sdk

Basic Information of paypal-rest-sdk NPM Package: