svnadmin is the administrative tool for monitoring and repairing your Subversion repository. For detailed information on repository administration, see the maintenance section for the section called “svnadmin”.
Since svnadmin works via direct repository access (and thus can only be used on the machine that holds the repository), it refers to the repository with a path, not a URL.
Options in svmadin are global, just as they are in svn:
--bdb-log-keep(Berkeley DB-specific.) Disable automatic log removal of database logfiles. Having these logfiles around can be convenient if you need to restore from a catastrophic repository failure.
--bdb-txn-nosync(Berkeley DB-specific.) Disables fsync when
              committing database transactions.  Used with the
              svnadmin create command to create a
              Berkeley DB-backed repository with
              DB_TXN_NOSYNC enabled (which improves
              speed but has some risks associated with it).
--bypass-hooksBypass the repository hook system.
--clean-logsRemove unused Berkeley DB logs.
--force-uuidBy default, when loading data into repository that
              already contains revisions, svnadmin
              will ignore the UUID from the dump
              stream.  This option will cause the repository's
              UUID to be set to the
              UUID from the stream.
--ignore-uuidBy default, when loading an empty repository,
              svnadmin will ignore the
              UUID from the dump stream.  This
              option will force that UUID to be ignored (useful for
              overriding your configuration file if it has
              --force-uuid set).
--incrementalDump a revision only as a diff against the previous revision, instead of the usual fulltext.
--parent-dir
          DIRWhen loading a dump file, root paths at
              DIR instead of
              /.
--pre-1.4-compatibleWhen creating a new repository, use a format that is compatible with versions of Subversion earlier than Subversion 1.4.
--pre-1.5-compatibleWhen creating a new repository, use a format that is compatible with versions of Subversion earlier than Subversion 1.5.
--revision (-r)
          ARGSpecify a particular revision to operate on.
--quietDo not show normal progress—show only errors.
--use-post-commit-hookWhen loading a dump file, runs the repository's
              post-commit hook after finalizing each newly loaded
              revision.
--use-post-revprop-change-hookWhen changing a revision property, runs the
              repository's post-revprop-change hook after changing the
              revision property.
--use-pre-commit-hookWhen loading a dump file, runs the repository's
              pre-commit hook before finalizing each newly loaded
              revision.  If the hook fails, aborts the commit and
              terminates the load process.
--use-pre-revprop-change-hookWhen changing a revision property, runs the
              repository's pre-revprop-change hook before changing the
              revision property.  If the hook fails, aborts the
              modification and terminates.