node -v

npm -v

npm install -g cnpm --registry=https://registry.npm.taobao.org

npm init [-f|--force|-y|--yes]

PS F:\Projects\Libing.Portal> npm init
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.See `npm help json` for definitive documentation on these fields
and exactly what they do.Use `npm install <pkg> --save` afterwards to install a package and
save it as a dependency in the package.json file.
Press ^C at any time to quit.
name: (Libing.Portal) libing.portal
version: (1.0.0)
description:
entry point: (index.js) main.js
test command:
git repository:
keywords:
author: libing
license: (ISC) MIT
About to write to F:\Projects\Libing.Portal\package.json:
{"name": "libing.portal","version": "1.0.0","description": "","main": "main.js","scripts": {"test": "echo \"Error: no test specified\" && exit 1"},"author": "libing","license": "MIT"
}Is this ok? (yes)

npm install --help

npm install (with no args, in package dir)
npm install [<@scope>/]<pkg>
npm install [<@scope>/]<pkg>@<tag>
npm install [<@scope>/]<pkg>@<version>
npm install [<@scope>/]<pkg>@<version range>
npm install <folder>
npm install <tarball file>
npm install <tarball url>
npm install <git:// url>
npm install <github username>/<github project>aliases: i, isntall
common options: [--save|--save-dev|--save-optional] [--save-exact]

npm install angular

npm install angular@1.2.32

npm install angular -S

"dependencies": {"angular": "^1.6.4"
},

npm install angular -D

"devDependencies": {"angular": "^1.6.4"
}

npm install

npm uninstall -help

npm uninstall [<@scope>/]<pkg>[@<version>]... [--save|--save-dev|--save-optional]

npm uninstall angular -S

npm list

npm outdated

npm update [-g] [<pkg>...]

npm view [<@scope>/]<pkg>[@<version>] [<field>[.subfield]...]

npm view angular