NPM install express. Error: No compatible version found
Update your npm
npm install -g npm
This was a bug in an earlier version of npm: https://github.com/npm/npm/issues/4984
You may get warnings when you update. Run the update one more time and you should see a clean npm install.
You want to run the latest node (currently 0.10.22). Try these steps to get the newest version:
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs -y # newer nodejs package includes npm
And then try again on npm install express
.