Node.js & express install on BBB(Beagle Bone Black)

Install Nodejs & expressjs ON Beagle Bone Black

Ref video : http://www.youtube.com/watch?v=tbgBN2y5_wI - 2012
in my case, just $apt-get install nodejs

sudo apt-get install python-software-properties python g++ make
sudo add-apt-repository ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get install nodejs

Ref : https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager#ubuntu-mint-elementary-os


Just my install case,


$apt-get install nodejs
$apt-get install npm
$npm install express -g

and i will make express project, but error..

-bash: express: command not found


??????????????????????????????????????????????????

so, i found that,
http://stackoverflow.com/questions/23002448/express-command-not-found
sudo npm install -g express-generator

success!

and 

$cd node_m && npm install

End!