Find and install latest node from source on Ubuntu.

install.bash

#!/bin/bash
echo "Finding latest version."
VERSION=`curl -s http://nodejs.org/dist/latest/SHASUMS.txt | awk '/node-v/ {print $2}' | head -1 | sed s/node-v// | sed s/-/\ / | awk '{print $1}'`
echo "Preparing to install node-v$VERSION"

url="http://nodejs.org/dist/v"$VERSION"/node-v"$VERSION".tar.gz"

echo "GET" $url
curl $url | tar -zxf -

cd "node-v"$VERSION

# Doing Deps
echo "Installing deps."
# For some reason everything after apt-get requires explicit &&
apt-get -y install build-essential openssl libssl-dev pkg-config && 
echo "Finished deps." &&

# Time to Install
./configure &&
make &&
make install &&
cd .. &&
rm -rf node-v$VERSION &&
node --version &&
exit

instructions.txt

curl -s https://gist.githubusercontent.com/mikeal/4eaae8d796c6bf486154/raw/install.bash | bash

At line 15, you could add set -e which will exit with an error if any command fails (returns nonzero).