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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 information 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 <mls@suse.de>

                               Feb 2005                   APPLYDELTARPM(8)



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