The steps below outline how to quickly install Node.js 0.10.17 onto a new Arduino YUN.

First, you'll need to connect to the Arduino YUN via SSH

Next, you'll want to make sure all the packages are up to date

opkg update  

Go to the /tmp directory

cd /tmp  

Download the package file for Node.js 0.10.17 using wget

wget http://codybonney.com/files/packages/ipk/node_v0.10.17-2_ar71xx.ipk  

Download and install the uclibcxx package

opkg install uclibcxx  

Install the Node.js package file

opkg install node_v0.10.17-2_ar71xx.ipk  

Node.js should now be installed to your Arduino YUN!