Centos 9 Stream 配置清华大学源 清华大学源配置链接步骤123456cd /etc/yum.repos.d/dnf install perlvi update_mirror.plperl ./update_mirror.pl /etc/yum.repos.d/centos*.repodnf install -y epel-releasednf clean all && dnf makecache安装12dnf instal -y neofetchdnf instal -y nginx