grzip is a high-performance file compressor based on Burrows-Wheeler Transform, Schindler Transform, Move-To-Front, and Weighted Frequency Counting. It uses the Block-Sorting Lossless Data Compression Algorithm, which has received considerable attention in recent years for both its simplicity and effectiveness. This implementation has a compression rate of 2.234 bps on the Calgary Corpus (14 files) without preprocessing filters. This is essentially an adaptation/extension of GRZipII by Ilya Grebnov.
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Release Notes: The grzip package now includes additional scripts such as grzcat, grzless, and grzdiff. Other minor corrections and enhancements have been made.
Release Notes: The Makefile has been reworked, and all compilation warnings have been removed. This release shoud be 64-bit safe. New options have been added to work with stdin and stdout (allowing it to compress files larger than 2GB on 32-bit systems).
Release Notes: The Makefile has been reworked, and all compilation warnings have been removed. A new -r option for removal of input files has been added. While this is still a work in progress (grzip is reported to be 64-bit unsafe), it is to be noticed that grzip provides very good compression while being generally not much slower than bzip2. For example, one gets a gain of almost 6 megabytes on a recent Linux kernel, and the compression is faster than bzip2 in that case.
No changes have been submitted for this release.