1AdvanceCOMP ZIP Compression UGteinleirtayl(1C)ommaAnddvsanMcaenCuOaMlP ZIP Compression Utility(1)
2
6 advzip - AdvanceCOMP ZIP Compression Utility
7
9 advzip [-a, --add] [-x, --extract] [-l, --list]
10 [-z, --recompress] [-t, --test] [-0, --shrink-store]
11 [-1, --shrink-fast] [-2, --shrink-normal] [-3, --shrink-extra]
12 [-4, --shrink-insane] [-i, --iter N]
13 [-k, --keep-file-time] [-p, --pedantic] [-q, --quiet]
14 [-h, --help] [-V, --version] ARCHIVES... [FILES...]
16 The main purpose of this utility is to recompress and test the zip ar‐
17 chives to get the smallest possible size.
18 For recompression the libdeflate implementation is used. This imple‐
20 mentation generally gives 5-10% more compression than the zLib Deflate
21 implementation, and it´s also generally faster.
22 For experimental purpose also the 7-Zip LZMA algorithm is available
24 with the -N option. In this case, the generated zips WILL NOT BE USABLE
25 by any other program. To make them usable you need to recompress them
26 without the -N option. Generally this algorithm gives 10-20% more com‐
27 pression than the zLib Deflate implementation.
28
30 -a, --add ARCHIVE FILES...
31 Create the specified archive with the specified files. You must
32 specify only one archive.
33 -x, --extract ARCHIVE
35 Extract all the files on the specified archive. You must specify
36 only one archive.
37 -l, --list ARCHIVES...
39 List the content of the specified archives.
40 -z, --recompress ARCHIVES...
42 Recompress the specified archives. If the -1, -2, -3, -4 options
43 are specified, it´s used the smallest file choice from: the pre‐
44 vious compressed data, the new compression and the uncompressed
45 format. If the -0 option is specified the archive is always
46 rewritten without any compression.
47 -t, --test ARCHIVES...
49 Test the specified archives. The tests may be extended with the
50 -p option.
51 -k, --keep-file-time
53 When recompressing with -z keep the .zip file time.
54 -p, --pedantic
56 Be pedantic on the zip tests. If this flag is enabled some more
57 extensive tests on the zip integrity are done. These tests are
58 generally not done by other zip utilities.
59 -0, --shrink-store
61 Disable the compression. The file is only stored and not com‐
62 pressed. This option is very useful to expand the archives of
63 .png and .mp3 files. These files are already compressed, trying
64 to compress them another time is really a waste of time and
65 resource.
66 -1, --shrink-fast
68 Set the compression level to "fast" using the zlib compressor.
69 -2, --shrink-normal
71 Set the compression level to "normal" using the libdeflate com‐
72 pressor. This is the default level of compression.
73 -3, --shrink-extra
75 Set the compression level to "extra" using the 7z compressor.
76 You can define the compressor iterations with the -i, --iter
77 option.
78 -4, --shrink-insane
80 Set the compression level to "insane" using the zopfli compres‐
81 sor. You can define the compressor iterations with the -i,
82 --iter option.
83 -i, --iter N
85 Define an additional numer of iterations for the 7z and zopfli
86 compressors for modes -3 and -4. More iterations usually give a
87 better compression, but may require a lot more time. Try for
88 example with 10, 15, 20, and so on.
89
91 This file is Copyright (C) 2002 Andrea Mazzoleni, Filipe Estima
92
94 advpng(1), advmng(1), advdef(1)
95 AdvanceCOMP ZIP Compression Utility(1)