Evgeniy Roshal released a new significant version of the archiver RAR 7.0. The RAR source code continues to be accessiblebut extends under the limiting license agreement. Ready-made assemblies formed for Linux, macOS, Windows, Android and FreeBSD.
From personal experience, RAR7 is still inferior to LZMA2 in terms of compression when using dictionaries up to 4GB, but provides significantly higher compression speeds and support for some features that are not present in, for example, 7-Zip: recovery information and support for fields beyond file modifications , but also the creation and the final discovery. The recently released 7-zip 24.01 archiver fully supports the updated RAR format.
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What new:
- Added support for dictionaries up to 64 gigabytes in size, which will allow you to more efficiently compress very large amounts of data, for example, images of virtual machines. For a dictionary larger than 4 gigabytes, you can specify any size, not just a power of two, as was the case in previous versions. To unpack archives with a dictionary larger than 4GB, RAR/WinRar 7 or higher is required.
- A new algorithm has been added to search for duplicate similar data, which allows you to improve the compression ratio and/or speed up the compression process. It is regulated by the command line option “-mcl(+|-)” (enable/disable) – it is disabled by default.
- Added a new slower algorithm for carefully searching for repetitions, which can be enabled with the “-mcx” option. For compression dictionaries up to 4GB, archives with both options will be supported for decompression by RAR versions starting from version 5.
- The maximum length of file paths in the archive has been increased from 2047 to 65,535 characters.
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