1. To install SVN server, run this command at the command prompt:
sudo apt-get install subversion libapache2-svn apache2
2. Make the directory where you want to keep the svn repositories:
sudo mkdir /svn
3. edit the dav_svn.conf file:
sudo vim /etc/apache2/mods-enabled/dav_svn.conf
Delete all the data and make it simple like this 
DAV svnSVNParentPath /svnAuthType BasicAuthName "Subversion Repository"AuthUserFile /etc/apache2/dav_svn.passwdRequire valid-user
4. To create a svn user , use the following command:
sudo htpasswd -cm /etc/apache2/dav_svn.passwd username
We only need to use the -c option for the FIRST TIME, when you create a user, after that you will only use the -m option.
5. 下面这一步好象不建议做, 因为会生成嵌套的repository
Move to the folder, where you want to keep your repositories and create your first repository:
cd /svnsudo svnadmin create test_repo
6. Make sure you set the permissions of the /svn directory to apache with the following command:
sudo chown -R www-data:www-data /svn
7. Restart the apache2 service:
sudo /etc/init.d/apache2 restart
