1MAKEDELTARPM(8)             System Manager's Manual            MAKEDELTARPM(8)
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NAME

6       makedeltarpm - create a deltarpm from two rpms
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SYNOPSIS

10       makedeltarpm  [-v]  [-V  version] [-z compression] [-m mbytes] [-s seq‐
11       file] [-r] [-u] oldrpm newrpm deltarpm
12       makedeltarpm [-v] [-V version] [-z compression] [-s  seqfile]  [-u]  -p
13       oldrpmprint oldpatchrpm oldrpm newrpm deltarpm
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DESCRIPTION

17       makedeltarpm  creates  a deltarpm from two rpms. The deltarpm can later
18       be used to recreate the new rpm from either filesystem data or the  old
19       rpm. Use the -v option to make makedeltarpm more verbose about its work
20       (use it twice to make it even more verbose).
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22       If you want to create  a  smaller  and  faster  to  combine  "rpm-only"
23       deltarpm  which  does  not  work  with  filesystem data, specify the -r
24       option.
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26       makedeltarpm normally produces a V3 format deltarpm, use the -V  option
27       to specify a different version if desired. The -z option can be used to
28       specify a different compression method, the default is to use the  same
29       compression method as used in the new rpm.
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31       The -s option makes makedeltarpm write out the sequence id to the spec‐
32       ified file seqfile.
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34       If you also use patch rpms you should use the -p option to specify  the
35       rpm-print  of  oldrpm  and  the  created  patch  rpm. This option tells
36       makedeltarpm to exclude the files that were not included in  the  patch
37       rpm but are not byteswise identical to the ones in oldrpm.
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39       makedeltarpm  can  also  create an "identity" deltarpm by adding the -u
40       switch. In this case only one rpm has  to  be  specified.  An  identity
41       deltarpm can be useful to just replace the signature header of a rpm or
42       to reconstruct a rpm from the filesystem.
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MEMORY CONSIDERATIONS

46       makedeltarpm normally needs about three to four times the size  of  the
47       rpm's uncompressed payload. You can use the -m option to enable a slid‐
48       ing block algorithm that needs mbytes megabytes of memory. This  trades
49       memory  usage  with  the size of the created deltarpm. Furthermore, the
50       uncompressed deltarpm payload is currently also stored in  memory  when
51       this option is used, but it tends to be small in most cases.
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SEE ALSO

55       applydeltarpm(8) combinedeltarpm(8)
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AUTHOR

59       Michael Schroeder <mls@suse.de>
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63                                   Jul 2010                    MAKEDELTARPM(8)