Install Node.JS on Mac OS X or Linux

node_reinstall.sh

NUMBER_OF_CPU_CORES=2
BASHRC=~/.profile

# Remove old Node.JS installation
rm ~/local/*/node* -rf
rm ~/.node_libraries -rf
sudo rm /usr/local/*/node* -rf
sudo rm /usr/*/node* -rf


# Install Node.JS
mkdir -p ~/local/{bin,lib,share}
mkdir -p ~/local/share/man

cd ~/
git clone git://github.com/joyent/node.git
cd node
./configure --prefix=~/local
make -j ${NUMBER_OF_CPU_CORES}
make install


# Put node in your path
echo 'PATH=~/local/bin/:${PATH}' >> ${BASHRC}
source ~/.profile


# Install npm
cd ~/
curl http://npmjs.org/install.sh | sh