问题描述：

前一次创建利用命令行创建ionic项目一次性成功，第二次没有运行：

$ npm install -g ionic cordova

直接运行：

ionic start ionicDemo

出现上图错误：

× Running command - failed!
Exception: npm ERR! path C:\work\ionicdemo\node_modules\fsevents\node_modules
npm ERR! code EPERM
npm ERR! errno -4048
npm ERR! syscall scandir
npm ERR! Error: EPERM: operation not permitted, scandir 'C:\work\ionicdemo\node_modules\fsevents\node_modules'
npm ERR! at Error (native)
npm ERR! { Error: EPERM: operation not permitted, scandir 'C:\work\ionicdemo\node_modules\fsevents\node_modules'
npm ERR! at Error (native)
npm ERR! stack: 'Error: EPERM: operation not permitted, scandir \'C:\\work\\ionicdemo\\node_modules\\fsevents\\node_modules\'\n at Error (native)',
npm ERR! errno: -4048,
npm ERR! code: 'EPERM',
npm ERR! syscall: 'scandir',
npm ERR! path: 'C:\\work\\ionicdemo\\node_modules\\fsevents\\node_modules' }
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! C:\Users\admin\AppData\Roaming\npm-cache\_logs\2017-08-12T13_57_00_472Z-debug.log

解决办法：

几经折腾使用下面方法即可：

# rm -rf node_modules
# npm clean cache

# npm install -g ionic cordova

#ionic start ionicdemo