Installing subversion under Apache:

• make apache a member of svn group: usermod -G apache,svn apache
• give apache permissions to /home/svn: chmod g+rwx /home/svn

Backup and restore a repo:

• svnadmin dump repo >repo_svn_dump; bzip2 -9 repo_svn_dump
• or: svnadmin dump repo | bzip2 -c -9 >repo_svn_dump.bz2

Recreate a repo:

• svnadmin create repo
• sudo -u svn bzip2 -d -d repo.bz2 | svnadmin load repo
• modify /etc/httpd/conf.d/repo-svn-authzfile
• you might, but don't need to, restart apache with /etc/rc.d/init.d/httpd restart

This assumes Apache2 and a particular setup found on RedHat Enterprise.

Mark conflict as resolved: svn resolved $file

Update to a version in the past: svn update -r {2004-04-04}

Create a tag:

svn copy https://sumatrapdf.googlecode.com/svn/trunk/ https://sumatrapdf.googlecode.com/svn/tags/release-0.7 -m "Tagging release 0.7."