Ubuntuの下でNodejs開発環境を準備する.

~ sudo apt-get install nodejs
~ sudo apt-get install npm
 ap-getによってnodejsをインストールした で:~node-vが れます:The program'node'can be found in the following package: * node * nodejs-legacyTry:ap-get install  :
sudo ln -s `which nodejs` /usr/local/bin/node    
   Express:

With Express 4, the application generator was removed and is now available as 'express-generator.' 
So you need to ：npm install -g express-generator instead.