Ubuntu 安装Node.js

 #下载nodejs wget https://npm.taobao.org/mirrors/node/v4.4.4/node-v4.4.4-linux-x64.tar.xz #解压 tar -xJf node-v4.4.4-linux-x64.tar.xz  #拷贝至/opt/目录  sudo mv node-v4.4.4-linux-x64 /opt/ #添加环境变量和淘宝源 sudo vi ~/.bashrc +export PATH=/opt/node-v4.4.4-linux-x64/bin:$PATH +alias cnpm="npm --registry=https://registry.npm.taobao.org \    --cache=$HOME/.npm/.cache/cnpm \    --disturl=https://npm.taobao.org/dist \    --userconfig=$HOME/.cnpmrc" #刷新环境变量 source ~/.bashrc