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7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License.
It handles encrypted *.7z, *.arj, *.lrz, *.rar and *.zip archives. Xarchiver uses the Direct Save Protocol XDS for drag and drop file saving. [14] The program acts as a front-end for various commonly installed libraries dealing with the supported compression formats. [15] [16] Xarchiver can't create archives whose archiver is not installed. [7]
7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z introduced in 2001 [12], but can read and write several others.
A self-extracting archive created using 7-Zip. A self-extracting archive (SFX or SEA) is a computer executable program which combines compressed data in an archive file with machine-executable code to extract the information. Running on a compatible operating system, it does not need a suitable extractor in the target computer to extract the data.
ZipGenius 6 is capable of opening a variety of formats commonly used with Linux, such as RPM, TAR, TAR.GZ, TGZ, GZ and 7Z. As regards data security, the archive history file is encrypted, the most recently used files list can be enabled (always or per-session) or disabled, and CryptoZip 2.1 gives encryption algorithms to lock user archives.
The operating systems the archivers can run on without emulation or compatibility layer. Ubuntu's own GUI Archive manager, for example, can open and create many archive formats (including Rar archives) even to the extent of splitting into parts and encryption and ability to be read by the native program.
The 7-Zip implementation uses several variants of hash chains, binary trees and Patricia trees as the basis for its dictionary search algorithm. In addition to LZMA, the SDK and 7-Zip also implements multiple preprocessing filters intended to improve compression, ranging from simple delta encoding (for images) and BCJ for executable code.
Novell Storage Services on Novell NetWare and Linux; NTFS with Encrypting File System (EFS) for Microsoft Windows; ZFS since Pool Version 30; Ext4, added in Linux kernel 4.1 [1] in June 2015; F2FS, added in Linux kernel 4.2 [2] [non-primary source needed] UBIFS, added in Linux kernel 4.10 [3] CephFS, added in Linux kernel 6.6 [4]