有点困惑。
rpm -U和rpm -F之间的差异是什么？
手册页说-U升级包
-F，–freshen = +如果已经安装了升级包
比较
rpm {-U|--upgrade} [install-options] PACKAGE_FILE ... This upgrades or installs the package currently installed to a newer version. This is the same as install, except all other version(s) of the package are removed after the new package is installed.
至
rpm {-F|--freshen} [install-options] PACKAGE_FILE ... This will upgrade packages, but only ones for which an earlier version is installed.