Taken from here: http://blog.chris.tylers.info/index.php?/archives/17-How-to-Rollback-Package-UpdatesInstallation-on-Fedora.html
Fedora Core 5, like FC4, uses yum for package management. yum is built on top of rpm, and pirut, pup, and yumexare graphical interfaces built on top of yum. Together, these tools provide a simple-to-use, powerful package management system.
One of the least-known secrets about rpm is that it can rollback (undo) package changes. It can take a fair bit of storage space to track the information necessary for rollback, but since storage is cheap, it’s worthwhile enabling this feature on most systems. This is a feature I’ve used several times while writing the book Fedora Linux.
Here’s cut-to-the-chase directions on using this feature:
- To configure yum to save rollback information, add the line tsflags=repackage to /etc/yum.conf.
- To configure command-line rpm to do the same thing, add the line %_repackage_all_erasures 1 to /etc/rpm/macros.
- Install, erase, and update packages to your heart’s content, using pup, pirut, yumex, yum, rpm, and the yumautomatic update service.
- If/when you want to rollback to a previous state, perform an rpm update with the --rollback option followed by a date/time specifier. Some examples: rpm -Uhv --rollback '9:00 am', rpm -Uhv --rollback '4 hours ago', rpm -Uhv --rollback 'december 25'.