Confusingly enough, the open source RAR decoder is also named unrar.
You can download a source code tarball from RARLAB, but the attached license explicitly forbids you from using the source code to develop any form of RAR encoder.Īnother option is a GPLv2-licensed command-line tool developed by the Gna! project. Since RARLAB’s unrar program is neither free software nor open source, you are unlikely to find it shipping with many Linux distributions. The RARLAB site provides a no-charge proprietary uncompress-only client for Linux called unrar, designed for 32-bit Intel distros in both RPM and Slackware packages, and as standalone binaries for PowerPC, 64-bit Intel, and ARM Linux systems. The RAR situation is a bit more complicated, due to the file format’s proprietary compression scheme. You can extract files from an archive with 7z e myotherfile.7z, but using the e function extracts all files to the current working directory, whereas x preserves their paths. To uncompress an archive, use 7z x myfile.7z. The basic syntax is 7z function options filename.7z. The two have the same syntax and options, differing only in that 7za is a self-contained app compiled only for use with 7z and the essential Unix formats (tar, gzip, bzip2, etc.), while 7z uses a plugin architecture that allows it to support many additional compression formats. For Linux users, the project links to a command-line client package named p7zip that provides two executables, 7z and 7za. The 7-Zip app is open source, but remains Windows-only. The combination of those two features had made them popular choices for online distribution of extremely large files such as ISO images. They also support splitting large archives into multiple small volumes for easier mobility and error recovery. The 7-Zip Windows app and a 7z software development kit are available under the LGPL.īoth formats purport to achieve better compression ratios for common data types than older algorithms. Its native format is 7z, which uses a modern offshoot of the LZ77 compression algorithm. Roshal sells a commercial utility for Windows called WinRAR, but also offers uncompress-only clients for a number of operating systems at no charge.ħ-Zip is a Windows application designed to handle as many compression formats as possible. RAR - short for Roshal Archive - is a proprietary file compression format developed by Eugene Roshal. But with the right software, you can handle these compressed files without much trouble.įirst, a little background. The RAR and 7-Zip file compression formats originated on Windows, so support for them on Linux is not as automatic as it is for old Unix holdovers like Gzip and TAR.
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