This is the command advdef that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
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 compressed 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 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.
-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
Use advdef online using onworks.net services
