安装 sails 问题 Mac OS

本人 Nodejs 小白 因项目需要 需要搭建 NodejS + sails 环境 输入以下 指令 npm -g install sails

提示下面的错误 我已经是在root下 > sails@0.11.0 preinstall /usr/local/lib/node_modules/sails

node ./lib/preinstall_npmcheck.js

sh: node: command not found npm ERR! Darwin 14.3.0 npm ERR! argv "node" "/usr/local/bin/npm" "-g" "install" "sails" npm ERR! node v0.12.4 npm ERR! npm v2.10.1 npm ERR! file sh npm ERR! code ELIFECYCLE npm ERR! errno ENOENT npm ERR! syscall spawn

npm ERR! sails@0.11.0 preinstall: node ./lib/preinstall_npmcheck.js npm ERR! spawn ENOENT npm ERR! npm ERR! Failed at the sails@0.11.0 preinstall script 'node ./lib/preinstall_npmcheck.js'. npm ERR! This is most likely a problem with the sails package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node ./lib/preinstall_npmcheck.js npm ERR! You can get their info via: npm ERR! npm owner ls sails npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request: npm ERR! /private/var/root/npm-debug.log