command [CMD] in Terminal
CMD in Terminal $node 30+40 70 $ npm view underscore $npm view underscore version $npm install underscore $npm uninstall underscore $npm install underscore@1.0.4 // make own package: $npm init Enter all detail and goto folder the "package.json" // to install package in ur project $npm install underscore --save it will reflect to "package.json" npm install express@4.16.2 --save