7-Zip: Difference between revisions
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| license = GNU GPL/LGPL | | license = GNU GPL/LGPL | ||
| website = | | website = https://www.7-zip.org/ | ||
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{{Infobox tsg | {{Infobox tsg | ||
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==Installation== | ==Installation== | ||
Download and run the installer for your operating system from the [https://www.7-zip.org/download.html]. | Download and run the installer for your operating system from the [https://www.7-zip.org/download.html 7-zip website]. | ||
==Archive formats== | ==Archive formats== | ||
By default, 7-Zip creates 7z-format archives with a .7z file extension. Each archive can contain multiple directories and files. As a container format, security or size reduction are achieved by looking for similarities throughout the data using a stacked combination of filters. These can consist of pre-processors, compression algorithms, and encryption filters. | By default, 7-Zip creates 7z-format archives with a .7z file extension. Each archive can contain multiple directories and files. As a container format, security or size reduction are achieved by looking for similarities throughout the data using a stacked combination of filters. These can consist of pre-processors, compression algorithms, and encryption filters. | ||
The core 7z compression uses a variety of algorithms, the most common of which are bzip2, PPMd, LZMA2, and LZMA. Developed by Pavlov, LZMA is a relatively new system, making its debut as part of the 7z format. LZMA uses an LZ-based sliding dictionary of up to 3840 MB in size, backed by a range coder. | |||
The native 7z file format is open and modular. File names are stored as Unicode. | |||
The 7z file format specification is distributed with the program's source code, in the "doc" sub-directory. | |||