mac下安装cnpm淘宝镜像

cnpm：官网

(事先已经安装了node，有npm)查看官网，提示安装需运行命令：npm install -g cnpm --registry=https://registry.npm.taobao.org

mac上运行 后发现错误：

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules/cnpm

npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules
npm ERR! path /usr/local/lib/node_modules/cnpm
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/usr/local/lib/node_modules/cnpm'
npm ERR!  { Error: EACCES: permission denied, access '/usr/local/lib/node_modules/cnpm'
npm ERR!   stack: 'Error: EACCES: permission denied, access \'/usr/local/lib/node_modules/cnpm\'',
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/usr/local/lib/node_modules/cnpm' }
npm ERR!
npm ERR! Please try running this command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/jinlong_zhang/.npm/_logs/2017-11-24T08_12_04_304Z-debug.log

解决办法：mac需要安装权限，命令前加上sudo即可

，即：

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

不报错，出现cnpm版本号，即成功安装

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