Ta上传的资源 (0)

1.查看系统本身存在的版本rpm-qa|grepyum2.卸载centos7上存在的yum安装源包rpm-e源包--nodeps3.下载yum源包(http://mirrors.163.com/centos/7/os/x86_64/Packages/)yum-metadata-parser-1.1.