Can't use npm installed packages from command line
Solution 1:
Try to install like this, then you don't need the sym link. If I were you I'd delete it, because you might not get the updates automatically and always have to "relink" it.
Try it like this:
aptitude install nodejs
apt-get install npm
aptitude install nodejs-legacy
Then try to install npm packages
npm install -g bunyan
npm install -g forever