In an RPM file, some files which are contained may be tagged as %config or %noreplace.
These options are important when updating (as well as uninstalling) RPMs. Especially if you install an updated version of an RPM onto a machine where an earlier version has already been installed you want to be sure you don't overwrite any configuraion files which come with the RPM package for initial installation but may have been changed by the administrator or user since installation.
In an RPM file, some files which are contained may be tagged as %config or %noreplace.
These options are important when updating (as well as uninstalling) RPMs. Especially if you install an updated version of an RPM onto a machine where an earlier version has already been installed you want to be sure you don't overwrite any configuraion files which come with the RPM package for initial installation but may have been changed by the administrator or user since installation.
There are some more directives, check http://www.rpm.org/max-rpm/s1-rpm-inside-files-list-directives.html for details.