apt-get update指令更新不了或者更新比较慢

更新镜像源为163

  1. mv /etc/apt/sources.list /etc/apt/sources.list.bak && \
  2.     echo "deb http://mirrors.163.com/debian/ stretch main non-free contrib" >/etc/apt/sources.list && \
  3.     echo "deb http://mirrors.163.com/debian/ stretch-updates main non-free contrib" >>/etc/apt/sources.list && \
  4.     echo "deb http://mirrors.163.com/debian/ stretch-backports main non-free contrib" >>/etc/apt/sources.list && \
  5.     echo "deb-src http://mirrors.163.com/debian/ stretch main non-free contrib" >>/etc/apt/sources.list && \
  6.     echo "deb-src http://mirrors.163.com/debian/ stretch-updates main non-free contrib" >>/etc/apt/sources.list && \
  7.     echo "deb-src http://mirrors.163.com/debian/ stretch-backports main non-free contrib" >>/etc/apt/sources.list && \
  8.     echo "deb http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib" >>/etc/apt/sources.list && \
  9.     echo "deb-src http://mirrors.163.com/debian-security/ stretch/updates main non-free contrib" >>/etc/apt/sources.list