LRZIP is a compression program and library that can achieve very high compression ratios and speed when used with large files using unlimited sized compression windows. It uses the combined compression algorithms of zpaq and lzma for maximum compression, lzo for maximum speed, and the long range redundancy reduction of rzip. It is designed to scale with increases with RAM size, improving compression further. A choice of either size or speed optimizations allows for either better compression than even lzma can provide, or better speed than gzip, but with bzip2 sized compression levels. It also has high grade password protected encryption and full STDIN/STDOUT support.
|Tags||Archiving Compression encryption|
|Operating Systems||POSIX Linux FreeBSD Mac OS X Cygwin|
|Implementation||C C++ asm|
Release Notes: This release adds various fixes for the lrztar wrapper.
Release Notes: Fixes -O not working on lrztar. Makes it less likely to run out of RAM when working with STDIO or using -U on huge files. Fixes corrupt archives being generated from incompressible data or very small files. Fixes endianness on various platforms for MD5 calculation to work. Fixes rare corruption when compressing with lzma from STDIN. Fixes all blank data being generated when compressing from STDIN on OS X. Performance micro-optimizations. Fixes corrupt archives being generated when all the same non-zero bytes exist on large files.
Release Notes: A fix for a broken lrztar in 0.613 was committed.
Release Notes: This release fixes a bug which made massive files show an incorrect md5 value on decompression, compression of ultra-small files to corrupt archives, compilation on various platforms, and a crash related to using -S.
Release Notes: This release has been updated to a new zpaq library backend which is faster and now supports three different compression levels. This significantly increases the maximum compression available by lrzip with -L 9. The include file Lrzip.h used by liblrzip is now properly installed into $prefix/include.