pkgdelta man page on Archlinux

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PKGDELTA(8)			 Pacman Manual			   PKGDELTA(8)

       pkgdelta - package delta generation utility

       pkgdelta [options] <package1> <package2>

       pkgdelta is used to create package delta files between two versions of
       the same package. These files are essentially binary patches. pacman(8)
       can download deltas instead of full package upgrades, and use them with
       the previous versions of packages (in the package cache) to synthesize
       the upgraded version of the packages. This likely reduces download
       sizes for upgrades significantly.

       pkgdelta requires xdelta3(1) to do its job.

       --max-delta-size <ratio>
	   Only create delta files if the delta is smaller than ratio *
	   package_size. Possible values: 0.0 to 2.0. Recommended values: 0.2
	   to 0.9. Default value: 0.7

       --min-pkg-size <size>
	   Minimal size of the package file in bytes to be considered for
	   delta creation. Default value: 1048576 bytes = 1MiB. This may be
	   any absolute size in bytes, or a human readable value such as 4 MiB
	   or 3.5MB.

       -q, --quiet
	   Be quiet. Do not output anything but warnings and errors.

	   $ pkgdelta libreoffice-3.3.2-1-x86_64.pkg.tar.xz libreoffice-3.3.2-2-x86_64.pkg.tar.xz

       pacman(8), xdelta3(1)

       See the pacman website at for current
       information on pacman and its related tools.

       Bugs? You must be kidding, there are no bugs in this software. But if
       we happen to be wrong, send us an email with as much detail as possible

       Current maintainers:

       ·   Allan McRae <>

       ·   Dan McGee <>

       ·   Dave Reisner <>

       Past major contributors:

       ·   Judd Vinet <>

       ·   Aurelien Foret <>

       ·   Aaron Griffin <>

       ·   Xavier Chantry <>

       ·   Nagy Gabor <>

       For additional contributors, use git shortlog -s on the pacman.git

Pacman 4.1.2			  2013-06-18			   PKGDELTA(8)

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