updater

How does it work?

creates backup directory under the ownCloud data directory.
extracts update package content into the backup/packageVersion
makes the copy of the current instance (except data dir) to backup/currentVersion-randomstring
moves all folders except data, config and themes from the current instance to backup/tmp
moves all folders from backup/packageVersion to the current version

git clone git@github.com:owncloud/updater.git
cd updater
make