Complete installation instructions have since been uploaded here by Nodesource. It is copied below for your reference. Instructions are the same for updating to the latest version.
Node.js v9.x:
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 6.x on older distros
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_9.x | bash -
apt-get install -y nodejs
Node.js v8.x:
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 6.x on older distros
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_8.x | bash -
apt-get install -y nodejs
Node.js v7.x:
NOTE: Debian Wheezy and Ubuntu Precise packages are NOT available for this release. Please reference running Node.js >= 4.x on older distros
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_7.x | bash -
apt-get install -y nodejs
Node.js v6.x:
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 4.x on older distros.
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_6.x | bash -
apt-get install -y nodejs
Node.js v5.x:
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 4.x on older distros.
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_5.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_5.x | bash -
apt-get install -y nodejs
Node.js v4.x:
NOTE: If you are using Ubuntu Precise or Debian Wheezy, you might want to read about running Node.js >= 4.x on older distros.
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_4.x | bash -
apt-get install -y nodejs
Node.js v0.12:
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_0.12 | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_0.12 | bash -
apt-get install -y nodejs
Node.js v0.10:
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_0.10 | sudo -E bash -
sudo apt-get install -y nodejs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_0.10 | bash -
apt-get install -y nodejs
io.js v3.x:
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_iojs_3.x | sudo -E bash -
sudo apt-get install -y iojs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_iojs_3.x | bash -
apt-get install -y iojs
io.js v2.x:
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_iojs_2.x | sudo -E bash -
sudo apt-get install -y iojs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_iojs_2.x | bash -
apt-get install -y iojs
io.js v1.x:
Note: this branch of io.js is not actively maintained and is not recommended for production use.
# Using Ubuntu
curl -sL https://deb.nodesource.com/setup_iojs_1.x | sudo -E bash -
sudo apt-get install -y iojs
# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_iojs_1.x | bash -
apt-get install -y iojs