[求助] Ionic 安装不能： Error: EACCES: permission denied, uv_cwd

$ sudo npm install -g ionic /usr/local/bin/ionic -> /usr/local/lib/node_modules/ionic/bin/ionic > [email protected] install /usr/local/lib/node_modules/ionic/node_modules/node-sass > node scripts/install.js shell-init: error retrieving current directory: getcwd: cannot access parent directories: Permission denied path.js:424 var path = (i >= 0) ? arguments[i] : process.cwd(); ^ Error: EACCES: permission denied, uv_cwd at Error (native) at Object.posix.resolve (path.js:424:50) at startup (node.js:91:32) at node.js:962:3 npm ERR! Darwin 15.3.0 npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "ionic" npm ERR! node v4.3.1 npm ERR! npm v2.14.12 npm ERR! code ELIFECYCLE npm ERR! [email protected] install: `node scripts/install.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the [email protected] install script 'node scripts/install.js'. npm ERR! This is most likely a problem with the node-sass package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node scripts/install.js npm ERR! You can get their info via: npm ERR! npm owner ls node-sass npm ERR! There is likely additional logging output above. npm ERR! Please include the following file with any support request: npm ERR! /Users/elviscai/npm-debug.log