下载nodejs
https://nodejs.org/dist/v4.6.0/node-v4.6.0-linux-x64.tar.gz
解压
tar -zxvf node-v4.6.0-linux-x64.tar.gz
移动到/opt/下
mv node-v4.6.0-linux-x64 /opt/
创建链接
ln -s /opt/node-v4.6.0-linux-x64/bin/node /usr/local/bin/node
