I want to debug some globally installed packages, both in Python as well as Node. I checked my environment variables in windows as well as on ubuntu, but 
could not find them declared in the environment variables.
Firstly, how do I find their locations.
Secondly, how do I know which file is executed when I call some globally declared package. e.g:
For Node:  
grunt someFile.js 
For Python:
syntribos someFiles.conf