svndumpfilter is a command-line utility for removing history from a Subversion dump file by either excluding or including paths beginning with one or more named prefixes. For details, see the section called “svndumpfilter”.
Options in svndumpfilter are global, just as they are in svn and svnadmin:
--drop-empty-revsIf filtering causes any revision to be empty (i.e., causes no change to the repository), removes these revisions from the final dump file.
--renumber-revsRenumbers revisions that remain after filtering.
--skip-missing-merge-sourcesSkips merge sources that have been removed as part of the filtering. Without this option, svndumpfilter will exit with an error if the merge source for a retained path is removed by filtering.
--preserve-revpropsIf all nodes in a revision are removed by filtering
              and --drop-empty-revs is not passed,
              the default behavior of svndumpfilter
              is to remove all revision properties except for the date
              and the log message (which will merely indicate that the
              revision is empty).  Passing this option will preserve
              existing revision properties (which may or may not make
              sense since the related content is no longer present in
              the dump file).
--quietDoes not display filtering statistics.