摘要： 1.卸载redhat自带的yum组件[root@localhost ~]# rpm -qa|grep yum|xargs rpm -e --nodeps2.查看系统版本[root@localhost ~]# lsb_release -a 显示为：Red Hat Enterprise Linux Server release 6.1 于是找对应的CentOS6.1 但是在http://mirrors.ustc.edu.cn/centos/6.0/readme看到This directory (and version of CentOS) is depreciated. For normal u. 阅读全文