svnadmin setuuid — 重置版本库的UUID。
Reset the repository UUID for the repository located at
REPOS_PATH.  If
NEW_UUID is provided, use that as the new
repository UUID; otherwise, generate a brand-new UUID for the repository.
If you've svnsynced /var/svn/repos
to /var/svn/repos-new and intend to use
repos-new as your canonical repository, you may want to
change the UUID for repos-new to the UUID of
repos so that your users don't have to check out a new
working copy to accommodate the change:
$ svnadmin setuuid /var/svn/repos-new 2109a8dd-854f-0410-ad31-d604008985ab
As you can see, svnadmin setuuid has no output upon success.