$ sudo npm install ssh2
$ sudo npm install -g ssh2

If want to update the ssh2 package execute the command as below,

$ sudo npm update ssh2

Update package globally,

$ npm install -g ssh2

Git clone:

$ sudo  git clone https://github.com/rektide/ssh2.git

$ sudo  npm install -g ./ssh2

ssh2@0.5.5 /usr/lib/node_modules/ssh2

How to remove ssh2 package :

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

$ sudo npm uninstall ssh2

Basic Information of ssh2 NPM Package: