Npm install -g cordova ionic Error

[brandyshea]

It’s a permissions error. You need to prepend the command with sudo, or change ownership of the /usr/local/lib/node_modules/cordova directory (and any other directories that give EACCES errors).

For example:

sudo chown -R isathish /usr/local/lib/node_modules/cordova/

See these posts for more help:

Cannot install ionic on my mac using the node.js

Problems with Getting Started - Step One