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XZ Utils (previously LZMA Utils) is a set of free software command-line lossless data compressors, including the programs lzma and xz, for Unix-like operating systems and, from version 5.0 onwards, Microsoft Windows.
While xz is commonly present in most Linux distributions, at the time of discovery the backdoored version had not yet been widely deployed to production systems, but was present in development versions of major distributions. [6] The backdoor was discovered by the software developer Andres Freund, who announced his findings on 29 March 2024. [7]
Compressing the archive with gzip or xz and zstd is supported. The file extension changes to indicate the compression method. [9] [2] data archive - A tar archive named data.tar contains the actual installable files. Compressing the archive with gzip, bzip2, lzma or xz and zstd is supported. The file extension changes to indicate the ...
In March 2018, Canonical tested [23] the use of zstd as a deb package compression method by default for the Ubuntu Linux distribution. Compared with xz compression of deb packages, zstd at level 19 decompresses significantly faster, but at the cost of 6% larger package files. Support was added to Debian (and subsequently, Ubuntu) in April 2018 ...
The original version of Squashfs used gzip compression, although Linux kernel 2.6.34 added support for LZMA [11] and LZO compression, [12] Linux kernel 2.6.38 added support for LZMA2 compression (which is used by xz), [13] Linux kernel 3.19 added support for LZ4 compression, [14] and Linux kernel 4.14 added support for Zstandard compression. [15]
Archive formats are used by most operating systems to package software for easier distribution and installation ... .tar.bz2, .tar.Z or tar.xz files ... Linux, macOS ...
ISO files larger than 4 GB can be used. Ventoy supports various operating system boot and installation ISO files, including Windows 7 and later, Debian, Ubuntu, CentOS, Red Hat Enterprise Linux (RHEL), Fedora and more than a hundred other Linux distributions; various Unix releases, VMware, Citrix XenServer, etc. have also been tested. [5]
It is possible to install Linux onto most of these file systems. The ext file systems, namely ext2, ext3, and ext4 are based on the original Linux file system. File systems have been developed by companies to meet their specific needs, by hobbyists, or adapted from Unix , Microsoft Windows, and other operating systems.