转自:https://rtcamp.com/tutorials/nodejs/node-js-npm-install-ubuntu/

Compiling is way to go for many but I am mostly in hurry so following works for me!

Adding Chris Lea’s Repo

Using Launchpad repo by Chris Lea just run following commands

apt-get install python-software-properties
apt-add-repository ppa:chris-lea/node.js
apt-get update

node.js install

apt-get install nodejs

Check node.js version

node -v

Outputs

v0.10.20

npm install

Above command should install npm.

Check npm version

npm -v

Outputs

1.4.3

If for some reason, if you see npm is not installed, you may try running:

apt-get install npm

(updated on 20 Feb 2014. After this comment from dodyrw