makedeltarpm man page on Oracle

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MAKEDELTARPM(8)						       MAKEDELTARPM(8)

NAME
       makedeltarpm - create a deltarpm from two rpms

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

DESCRIPTION
       makedeltarpm  creates  a deltarpm from two rpms. The deltarpm can later
       be used to recreate the new rpm from either filesystem data or the  old
       rpm. Use the -v option to make makedeltarpm more verbose about its work
       (use it twice to make it even more verbose).

       If you want to create  a	 smaller  and  faster  to  combine  "rpm-only"
       deltarpm	 which	does  not  work	 with  filesystem data, specify the -r
       option.

       makedeltarpm normally produces a V3 format deltarpm, use the -V	option
       to specify a different version if desired. The -z option can be used to
       specify a different compression method, the default is to use the  same
       compression method as used in the new rpm.

       The -s option makes makedeltarpm write out the sequence id to the spec‐
       ified file seqfile.

       If you also use patch rpms you should use the -p option to specify  the
       rpm-print  of  oldrpm  and  the	created	 patch	rpm. This option tells
       makedeltarpm to exclude the files that were not included in  the	 patch
       rpm but are not byteswise identical to the ones in oldrpm.

       makedeltarpm  can  also	create an "identity" deltarpm by adding the -u
       switch. In this case only one rpm has  to  be  specified.  An  identity
       deltarpm can be useful to just replace the signature header of a rpm or
       to reconstruct a rpm from the filesystem.

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

SEE ALSO
       applydeltarpm(8) combinedeltarpm(8)

AUTHOR
       Michael Schroeder <mls@suse.de>

				   Jul 2010		       MAKEDELTARPM(8)
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