Install nodejs and npm using the binaries. This is useful for installing the latest version of node on RaspberryPi.

install.sh

# Download the right version from here: https://nodejs.org/dist
# Raspberry Pi 1: armv6
# Raspberry Pi 2: armv7
# Raspberry Pi 3: armv8

# Extract
tar -xzvf node-v5.7.0-linux-armv6l.tar.gz;

# Move folder
sudo mv node-v5.7.0-linux-armv6l /opt/node

#Create symlinks to node && npm
sudo ln -s /opt/node/bin/node /usr/bin/node;
sudo ln -s /opt/node/bin/node /usr/sbin/node;
sudo ln -s /opt/node/bin/node /sbin/node;
sudo ln -s /opt/node/bin/node /usr/local/bin/node;
sudo ln -s /opt/node/bin/npm /usr/bin/npm;
sudo ln -s /opt/node/bin/npm /usr/sbin/npm;
sudo ln -s /opt/nodejs/bin/npm /sbin/npm;
sudo ln -s /opt/nodejs/bin/npm /usr/local/bin/npm;