npm install -g n 报错

Question

为了更新nodejs安装n模块，但是报了如下错误，这是为什么呢？

C:\Windows\System32>npm i -g n
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\node.exe" "C:\\node_modules\\npm\\bin\\npm-cli.js" "i" "-g"
n"
npm ERR! node v6.11.0
npm ERR! npm  v3.10.10
npm ERR! code EBADPLATFORM

npm ERR! notsup Unsupported platform for n@2.1.7: wanted {"os":"!win32","arch":
any"} (current: {"os":"win32","arch":"x64"})
npm ERR! notsup Valid OS:    !win32
npm ERR! notsup Valid Arch:  any
npm ERR! notsup Actual OS:   win32
npm ERR! notsup Actual Arch: x64

npm ERR! Please include the following file with any support request:
npm ERR!     C:\Windows\System32\npm-debug.log

Answer 1

一看你就没仔细的看文档，n模块不支持windows系统。
https://www.npmjs.com/package/n
图下边括号的内容，自己翻一下。

Answer 2

npm -install xxx -g // "xxx"表示的是你要装的模块

Answer 3

n一般就是指你要下载的模块，比如jquery