Where are committed files stored on the SVN server file system?

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http://serverfault.com – I have SVN set up and working properly. I can access it via http://domain/home/svn/repo/trunk and I have pulled and committed code with STS. However, if I SSH to the /home/svn/repo/trunk directory I don't see any files other than the ones made on creation of the repository. Where are my committed files stored? (HowTos)