advzip

AdvanceCOMP ZIP Compression General(CommAdvanceCOMP ZIP Compression Utility(1)



NAME
       advzip - AdvanceCOMP ZIP Compression Utility

SYNOPSIS
       advzip [-a, --add] [-x, --extract] [-l, --list]
            [-z, --recompress] [-t, --test] [-0, --shrink-store]
            [-1, --shrink-fast] [-2, --shrink-normal] [-3, --shrink-extra]
            [-4, --shrink-insane] [-i, --iter N]
            [-k, --keep-file-time] [-p, --pedantic] [-q, --quiet]
            [-h, --help] [-V, --version] ARCHIVES... [FILES...]
DESCRIPTION
       The main purpose of this utility is to recompress and test the zip
       archives to get the smallest possible size.

       For recompression the 7-Zip (www.7-zip.com) Deflate implementation is
       used. This implementation generally gives 5-10% more compression than
       the zLib Deflate implementation.

       For experimental purpose also the 7-Zip LZMA algorithm is available
       with the -N option. In this case, the generated zips WILL NOT BE USABLE
       by any other program. To make them usable you need to recompress them
       without the -N option. Generally this algorithm gives 10-20% more
       compression than the 7-Zip Deflate implementation.

OPTIONS
       -a, --add ARCHIVE FILES...
              Create the specified archive with the specified files. You must
              specify only one archive.

       -x, --extract ARCHIVE
              Extract all the files on the specified archive. You must specify
              only one archive.

       -l, --list ARCHIVES...
              List the content of the specified archives.

       -z, --recompress ARCHIVES...
              Recompress the specified archives. If the -1, -2, -3, -4 options
              are specified, it´s used the smallest file choice from: the
              previous compressed data, the new compression and the
              uncompressed format. If the -0 option is specified the archive
              is always rewritten without any compression.

       -t, --test ARCHIVES...
              Test the specified archives. The tests may be extended with the
              -p option.

       -k, --keep-file-time
              When recompressing with -z keep the .zip file time.

       -p, --pedantic
              Be pedantic on the zip tests. If this flag is enabled some more
              extensive tests on the zip integrity are done. These tests are
              generally not done by other zip utilities.

       -0, --shrink-store
              Disable the compression. The file is only stored and not
              compressed. This option is very useful to expand the archives of
              .png and .mp3 files. These files are already compressed, trying
              to compress them another time is really a waste of time and
              resource.

       -1, --shrink-fast
              Set the compression level to "fast" using the zlib compressor.

       -2, --shrink-normal
              Set the compression level to "normal" using the 7z compressor.
              This is the default level of compression.

       -3, --shrink-extra
              Set the compression level to "extra" using the 7z compressor.
              You can define the compressor iterations with the -i, --iter
              option.

       -4, --shrink-insane
              Set the compression level to "insane" using the zopfli
              compressor.  You can define the compressor iterations with the
              -i, --iter option.

       -i, --iter N
              Define an additional numer of iterations for the 7z and zopfli
              compressors for modes -3 and -4.  More iterations usually give a
              better compression, but may require a lot more time.  Try for
              example with 10, 15, 20, and so on.

COPYRIGHT
       This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima

SEE ALSO
       advpng(1), advmng(1), advdef(1)



                                        AdvanceCOMP ZIP Compression Utility(1)