1、命令用法
Usage:
npm config set <key>=<value> [<key>=<value> ...]
npm config get [<key> [<key> ...]]
npm config delete <key> [<key> ...]
npm config list [--json]
npm config edit
2、"global" config from D:\Program Files\nodejs\node_modules\node_global\etc\npmrc
3、"user" config from C:\Users\Administrator\.npmrc
