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6.5. Yum cache handling behavior changes

By default, yum is now configured to remove headers and packages downloaded after a successful install to reduce the ongoing disk space requirements of updating a Fedora system. Most users have little or no need for the packages once they have been installed on the system. For cases where you wish to preserve the headers and packages (for example, if you share your /var/cache/yum directory between multiple machines), modify the keepcache option to 1 in /etc/yum.conf.