The AdvanceZIP compressor(1) The AdvanceZIP compressor(1)
NAME
advzip - The AdvanceZIP compressor
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] [-N, --not-zip] [-p, --pedantic] [-q, --quiet]
[-h, --help] [-V, --version] ARCHIVES... [FILES...]
DESCRIPTION
The main purpose of this utility is to recompress and test the zip ar-
chives 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 com-
pression 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 options are
specified, it's used the smallest file(1,n) choice from: the previous
compressed data, the new compression and the uncompressed for-
mat. If the -0 option is specified the archive is always rewrit-
ten without any compression.
-t, --test ARCHIVES...
Test the specified archives. The tests may be extended with the
-p option.
-N, --not-zip
Use the LZMA algorithm when compressing. The generated zips will
not be readable by any other application!
-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(1,n) is only stored and not com-
pressed. 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(1,2,n) is really a waste of time(1,2,n) and
resource.
-1, --shrink-fast
Set the compression level to "fast".
-2, --shrink-normal
Set the compression level to "normal". This is the default level
of compression.
-3, --shrink-extra
Set the compression level to "extra".
-4, --shrink-insane
Set the compression level to "insane".
COPYRIGHT
This file(1,n) is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima
SEE ALSO
advpng(1), advmng(1), advdef(1)
The AdvanceZIP compressor(1)