在Ubuntu16运行npm命令报下面的错误：
ERROR: npm is known not to run on Node.js v4.2.6 Node.js 4 is supported but the specific version you're running has a bug known to break npm. Please update to at least ${rel.min} to use this version of npm. You can find the latest release of Node.js at https://nodejs.org/
解决方法
尝试重新安装npm
卸载
sudo apt remove nodejs npm
重新安装 Node 6
curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
sudo apt-get install -y nodejs
或者重新安装Node 8
curl -sL https://deb.nodesource.com/setup_8.x | sudo -E bash -
sudo apt-get install -y nodejs