Migrating subversion from a Windows installation to a Linux installation is not just copying the repository structure and files. But it is still quite easy. Here are the steps:

1. Extract the repository data from Windows repository and store it into an OS independant format using the dump command:

   svnadmin dump [repo location] > [dump file]
   ex: svnadmin dump /svn/MyProject > c:\temp\MyProject.dmp

2. Upload the exported file on the Linux system.
3. Create a Subversion repository:

   svnadmin create [repo location]

4. Adjust security settings on the new repository directory (if necessary).
5. Restore the dump file into the new repository:

   svnadmin load [repo location] < [dump file]

Here is an example of loading a dumped file into a Subversion installation for accessing through Apache2 and Ubuntu Server 7.04:

1. create repository:

   sudo svnadmin create /var/svn/MyProject

2. change owner:

   sudo chown -R www-data:www-data /var/svn/MyProject

3. change security:

   sudo chmod -R g+ws /var/svn/MyProject

4. Load dump file:

   sudo svnadmin load /var/svn/MyProject < ~/MyProject.dmp