On Wed, Feb 08, 2012 at 06:21:27AM +0900, Masaru Kitajima wrote: > I typed "echo SVN_SSH" then server says "undefined variable". And nothing > found in the files you mentioned.
To me it looks like the problem is happening on the client instead of on the server. If you cannot find anything wrong in your ~/.subversion/config file, maybe you have a bad "ssh =" option in /etc/subversion/config?
