title: Have to use sudo while using node command in osx
body: <p>I just installed node.js in osx, finding that I have to use sudo before executing any node command, which causes big inconvenience. I think the problem is that my current system account   does't have the permission to execute node command, which I guess could be resolved by authorisation. Yet, I don't know how to do it. Anyone knowing how to authorise? Thanks in advance!</p>