npm WARN checkPermissions Missing write access to /usr/local/lib/node_modules

Question

I am trying to install monaca with this command.

npm install -g monaca

But right after getting these errors:

Answer 1

add following lines to ~/.bashrc after installing npm:

npm set prefix ~/.npm
PATH="$HOME/.npm/bin:$PATH"
PATH="./node_modules/.bin:$PATH"

Execute following line after changes:

source ~/.bashrc

and as mentioned by @contemplator avoid using sudo