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cd ~
sudo apt-get update
sudo apt-get install git-core curl build-essential openssl libssl-dev
git clone https://github.com/joyent/node.git
cd node
./configure
make
sudo make install
node -v
sudo ln -s $HOME/node/ /usr/local/lib/node
curl -k https://npmjs.org/install.sh | sudo sh
npm -v
npm install less

#if it's fail
sudo chmod 777 -R node
npm install less

sudo echo 'PATH=$PATH:$HOME/node_modules/less/bin' >> ~/.bashrc