Subversion - svnadmin dump remote url

I have Subversion repository that contains multiple projects, and now I'm trying to separate each project into it's own repository.

system:

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 5.11 (Tikanga)
# rpm -q subversion
subversion-1.6.11-12.el5_10
# 

subversion:

$ svnadmin dump http://svn/repo1/proj1/
svnadmin: E205000: 'http://svn/repo1/proj1/' is a URL when it should be a local path
$ 

according to following document - svnadmin—Subversion Repository Administration

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.

that explains why it didn't work for me. What other alternatives ways to accomplish that?

I guess one of the better solution would be to upgrade to Subversion version 1.7+

# cat /etc/redhat-release 
Red Hat Enterprise Linux Server release 7.0 (Maipo)
# rpm -q subversion
subversion-1.7.14-6.el7.x86_64
# 

As Subversion 1.7+, has following:

svnrdump - Subversion remote repository dumper and loader

And then one can use following:

$ svnrdump dump http://svn/repo1/proj1/ > svn.repo1.proj1