RedHat Enterprise Linux 6.4使用Centos 6的yum源问题 作为一名新手,学习Linux已经一个月了,其间遇到了不少问题,而今天笔者遇到的问题是 #yum install pam-devel #This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Setting up Install Process…