1.如果是安装本地的rpm包
(1)dnf install 会自动处理依赖
(2)rpm -ivh xx.rpm直接安装。
2.如果想强制安装旧版本的rpm
rpm -Uvh --oldpackage [filename]
--oldpackage allows you to install older package
-U means upgrade, but in this case it will just replace the other version.
if you use -i instead of -U you will end up with both versions installed.