通过more /etc/*release* 查看系统版本
（需要下载对应的系统版本） mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/ Centos-6.repo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/ Centos-7.repo转载于:https://www.cnblogs.com/linlianhuan/p/9923285.html
