APPLYDELTARPM(8)                                                                                                APPLYDELTARPM(8)



NAME
       applydeltarpm - reconstruct an rpm from a deltarpm


SYNOPSIS
       applydeltarpm [-v] [-p] [-r oldrpm] deltarpm newrpm
       applydeltarpm -c|-C deltarpm
       applydeltarpm [-c|-C] -s sequence
       applydeltarpm -i deltarpm


DESCRIPTION
       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 with the -r option, if no rpm name is provided on-disk data is used. You can use -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  with.  The -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 -s sequence option. Such an id contains all  the  informa-
       tion that is needed to do reconstruction checking.

       Finally information about a deltarpm can be printed with the -i option.


MEMORY CONSIDERATIONS
       applydeltarpm was written to work on systems with limited memory.  It uses a paging algorithm to keep the size of in-core
       data low and not bring the system in an out-of-memory situation.


EXIT STATUS
       applydeltarpm returns 0 if the rpm could be recreated or the checking succeeded, it returns 1 and prints an error message
       to stderr if something failed.


SEE ALSO
       makedeltarpm(8), rpm(8)


AUTHOR
       Michael Schroeder <mlsATsuse.de>



                                                            Feb 2005                                            APPLYDELTARPM(8)