Upgrading to WordPress 2.5 with subversion

The quickest way to upgrade wordpress is via subversion. Assuming you had already installed your blog via subversion then you can upgrade using the following steps:

Backup your database
Since the wordpress db contains only MyISAM tables, you can backup with a simple file copy.

cd /var/lib/mysql
cp -Rp wordpress/ wordpressBACKUP

Switch to the latest subversion url
Just run the svn switch command. This will add, update and delete scripts as required to bring you to the latest version.

cd /path/to/your/blog
svn switch http://svn.automattic.com/wordpress/tags/2.5/

Run the upgrade script
Finally, run the wordpress upgrade script, which upgrades the database and anything else it might need to do. Simply visit http://www.yoursite.com/blog/wp-admin/upgrade.php