AdvanceCOM...ion Utility(1) General Commands Manual AdvanceCOM...ion Utility(1) NAME advdef - AdvanceCOMP Deflate Compression Utility SYNOPSIS advdef [-z, --recompress] [-0, --shrink-store] [-1, --shrink-fast] [-2, --shrink-normal] [-3, --shrink-extra] [-4, --shrink-insane] [-i, --iter N] [-f, --force] [-q, --quiet] [-h, --help] [-V, --version] FILES... DESCRIPTION The main purpose of this utility is to recompress the data present in the .png, .mng, .gz, .tgz and .svgz files. The internal structure of the files isn't changed. Only the compressed data is modified. OPTIONS -z, --recompress FILES... Recompress the specified files. If the -1, -2, -3, -4 options are specified it's used the smallest file choice from the previous com- pressed data and the new compression. If the -0 option is specified the file is always rewritten without any compression. -0, --shrink-store Disable the compression. The file is only stored and not compressed. The file is always rewritten also if it's bigger. -1, --shrink-fast Set the compression level to "fast" using the zlib compressor. -2, --shrink-normal Set the compression level to "normal" using the libdeflate compres- sor. 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 com- pressors 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. -f, --force Force the use of the new file also if it's bigger. LIMITATIONS The advdef program cannot be used to recompress huge files because it needs to allocate memory for both the complete compressed and uncompressed data. COPYRIGHT This file is Copyright (C) 2003, 2004 Andrea Mazzoleni SEE ALSO advpng(1), advmng(1), advzip(1), gzip(1), bzip2(1) AdvanceCOM...ion Utility(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | LIMITATIONS | COPYRIGHT | SEE ALSO
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