The best one liner for what MEAN stack is given in the following picture.
MEAN stack is more like LAMP.
M = MongoDB
E = ExpressJS
A = AngularJS
N = NodeJS
There has been a lot of development from Google for the AngularJS and NodeJS. They are minimalistic and javascript based, for now cutting edge web development tools.
For installing MEAN stack in ubuntu, follow the commands to set up your MEAN Stack. I deployed my server in Digitalocean which is like my obsessed service for cloud deployment.
Install MongoDB
#~ sudo apt-get install mongodb
Install NodeJS and Npm
#~ sudo apt-get install nodejs npm
and create a symlink
#~ sudo ln -s /usr/bin/nodejs /usr/bin/node
Install Bower
#~ sudo npm install -g bower
Install Grunt
#~ sudo npm install -g grunt-cli
Install MEAN
sudo npm install -g mean-cli
Init your first App
$ mean init testApp
type in your IPaddress with port 3000
http://xxx.xxx.xxx.xxx:3000