applydeltarpm applies a binary delta to either an old rpm or to
on-disk data to re-create a new rpm. The old rpm can be specified
-r option, if no rpm name is provided on-disk data is used. You
-p to make applydeltarpm print the percentage of completion, or
-v to make it more verbose about its operation.
The second an third form can be used to check if the reconstruction
is possible. It may fail if the on-disk data got changed
(deltarpms are created in a way that config file changes do not
matter) or the deltarpm does not match the rpm the delta was generated
-c option selects full (i.e. slow) on-disk checking, whereas
-C only checks if the filesizes have not changed.
Instead of a full deltarpm a sequence id can be given with the
sequence option. Such an id contains all the information that is needed to
do reconstruction checking.
Finally information about a deltarpm can be printed with