$ sudo npm install protractor
$ sudo npm install -g protractor

If want to update the protractor package execute the command as below,

$ sudo npm update protractor

Update package globally,

$ npm install -g protractor

Git clone:

$ sudo  git clone https://github.com/rektide/protractor.git

$ sudo  npm install -g ./protractor

protractor@5.2.0 /usr/lib/node_modules/protractor

How to remove protractor package :

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

$ sudo npm uninstall protractor

Basic Information of protractor NPM Package: