yum system does not require any routine
maintenance. To ensure that
yum operations are
carried out at optimal speed, disable or remove repository
definitions which you no longer require. You may also clear the
files from the
yum caches in order to recover
enable=0 in a definition file to prevent
yum from using that repository. The
yum utility ignores any definition file with
To completely remove access to a repository:
Delete the relevant file from
Delete the cache directory from
yum retains the packages and
package data files that it downloads, so that they may be reused
in future operations without being downloaded again. To purge
the package data files, use this command:
su -c 'yum clean headers'
Run this command to remove all of the packages held in the caches:
su -c 'yum clean packages'
When using these commands, at the prompt, enter the password for
Purging cached files causes those files to downloaded again the next time that they are required. This increases the amount of time required to complete the operation.