配置epel-release源解决办法 配置epel-release源yum install epel-releaseyum install R 报错 解决办法 CentOS 8.3: powertools CentOS 8.4: PowerTools dnf install 'dnf-command(config-manager)' -yyum config-manager --set-enabled powertoolsyum install R https://zhuanlan.zhihu.com/p/409715035