Compression/Archive Utilities.

May 13th, 2015
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Brescia University
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an open source, with an open architecture, for manipulating archives. Has a high compression ratio with the ability to reduce files to 40% more than its alternatives.

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Compression/Archive UtilitiesComparison & ContrastUtility NameOperational DescriptionMost Common Arguments & EffectsAlgorithms Implemented7-Zipan open source, with an open architecture, for manipulating archives. Has a high compression ratio with the ability to reduce files to 40% more than its alternatives. Extra features include password protection as well as adjustable compression levels, compatibility with multiple archive formats. It also provides command line and Graphical user interface. Furthermore it allows integration with window shells, provides the option of self-extraction of archives, and archive headers compression.Command-Line (non-switch)To reduce command lines length, switch options can be utilized.For switch options that take optional string arguments, these arguments must be entered as a token string as the last option in a, to follow 7-zips format. Deflate: Standard LZ77 and Huffman based algorithm. LZ77 works by locating repetitions while Huffman is a form of prefix coding (Feldspar, 1997). The version used is written in C++ and has a hgh compression rate.BZip2: Standard BWT(Burrow-Wheeler Transform) algorithm. Only compresses sngle files. But is more effective than Deflate in most cases.LZMA: Optimized LZ77 algorithm. Its more space-efficient than BZIP2. It performs lossless data compression.PPMD: Effective for compressing files containing natural language. Variant of PPM (Prediction by Partial Matching). Loseless compression algo

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