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Operating system kernel
GNU Mach is an implementation of the Mach microkernel. It is the default microkernel in the GNU Hurd. GNU Mach runs on IA-32 and x86-64 machines. GNU
GNU_Mach
Operating system kernel designed as a replacement for Unix
GNU Hurd is a collection of microkernel servers written as part of GNU, for the GNU Mach microkernel. It has been under development since 1990 by the GNU
GNU_Hurd
Free software collection
X Window System, and the Mach microkernel that forms the basis of the GNU Mach core of GNU Hurd (the official kernel of GNU). With the exception of the
GNU
Free software project
kernel, but abandoned the effort in favour of GNU Mach. Once the kernel and the compiler were finished, GNU was able to be used for program development
GNU_Project
Free general-purpose operating system
Debian GNU/Hurd is a flavor based on the Hurd kernel (which, in turn, runs on the GNU Mach microkernel), instead of the Linux kernel. Debian GNU/Hurd has
Debian
Operating systems based on GNU
GNU variants are operating systems based upon the GNU operating system (i.e. whose components include the GNU C library and system libraries; application
GNU_variants
Standard UNIX utility that prints name and other details about the machine
bundled in GNU coreutils was written by David MacKenzie. The command is available as a separate package for Microsoft Windows as part of the GnuWin32 project
Uname
Operating system
the Mach microkernel was a better underlying design for a server-based operating system.[citation needed] This second attempt evolved into the GNU Hurd
TRIX_(operating_system)
Memory management mechanism
DragonFly BSD (introduced in release 1.0) FreeBSD (introduced in 5.0) GNU Mach Haiku (introduced in alpha 2) Horizon (Nintendo Switch microkernel) HP-UX
Slab_allocation
Operating system microkernel
compared to Mach's 29%. The following is a list of operating system kernels derived from Mach and operating systems with kernels derived from Mach: GNU Hurd
Mach_(kernel)
American activist and programmer (born 1953)
members of the GNU project began using Carnegie Mellon's Mach microkernel in a project called GNU Hurd, which has yet to achieve the maturity level required
Richard_Stallman
Topics referred to by the same term
to: Mach (kernel), an operating systems kernel technology ATI Mach, a 2D GPU chip by ATI GNU Mach, the microkernel upon which GNU Hurd is based Mach, Balochistan
Mach_(disambiguation)
Computer standard for SATA host controllers
4.1), NetBSD (since version 4.0), FreeBSD (since version 8.0), macOS, GNU Mach, ArcaOS, eComStation (since version 2.1), and Solaris 10 (since version
Advanced Host Controller Interface
Advanced_Host_Controller_Interface
Linker for ELF files
and Mach-O (Mac OS X) formats. "gold README: Rewrite, with some notes on unsupported features". 2008-03-25. Retrieved 2020-04-28. It is a GNU program
Gold_(linker)
Security". FreeBSD Handbook. setfacl(1) – FreeBSD General Commands Manual www.gnu.org/software/hurd/faq/smp.html "The Fiasco microkernel - Status". Retrieved
Comparison of operating system kernels
Comparison_of_operating_system_kernels
Hard-coded search path
building binaries that can be freely moved across different folders. The GNU Linker (GNU ld) implements a feature which it calls "new-dtags", which can be used
Rpath
Program for displaying information about object files
c3 ret Computer programming portal GNU Binutils "An Apple Library Primer". Apple Developer Forums. "llvm-otool - Mach-O dumping tool". LLVM Reference. objdump(1) – Linux
Objdump
Unix-like operating system
MachTen is a Unix-like operating system from Tenon Intersystems. It is based on the Mach kernel, 4.4BSD, GNU programming tools, and the X Window System
MachTen
Computer operating system
of code derived from NeXTSTEP, FreeBSD and other BSD operating systems, Mach, and other free software projects' code, as well as code developed by Apple
Darwin_(operating_system)
Assembly-language programming and binary-analysis tools
development tools Mach-O Object file Opcode Portable Executable Software programmed in assembly language "Using as". sourceware.org. GNU Project. Retrieved
List of assembly software and tools
List_of_assembly_software_and_tools
Software for numerical solution of partial differential equations
the global community of users and developers. SU2 is released under the GNU Lesser General Public License (LGPL) version 2.1. SU2 is being developed
SU2_code
Lossless data compression software
utilities) are under different free software licenses such as GNU LGPLv2.1, GNU GPLv2, or GNU GPLv3." LZMA Util, retrieved 25 January 2011 "XZ Utils Release
XZ_Utils
Open-source macOS compatibility layer
of a Mach kernel, mainly Ports IPC handling. Some licensing issues exist [citation needed] in the darling-mach module, as the team are adding GNU GPL modifications
Darling_(software)
Interactive program for design and analysis of airfoils
Given the coordinates specifying the shape of a 2D airfoil, Reynolds and Mach numbers, XFOIL can calculate the pressure distribution on the airfoil and
XFOIL
List of software distributions using the Linux kernel
2025-10-17. Retrieved 2025-11-02. "GNU.org". Archived from the original on 2014-12-16. "FSF adds PureOS to list of endorsed GNU/Linux distributions — Free Software
List_of_Linux_distributions
American computer scientist, Microsoft vice president
of several operating systems such as NeXTSTEP, GNU Hurd, macOS, iOS, OSF/1, and Tru64 UNIX. Rashid's Mach kernel pioneered the concepts of microkernel architecture
Richard_Rashid
Software reverse engineering tool
operating systems. It can also be used as a debugger for Windows PE, Mac OS X Mach-O, and Linux ELF executables. A decompiler plug-in, which generates a high
Interactive_Disassembler
Upper bound on rounding error in floating-point arithmetic
types (since C++11) Floating Types - Using the GNU Compiler Collection (GCC) Decimal Float - Using the GNU Compiler Collection (GCC) "Basic Issues in Floating
Machine_epsilon
Overview of and topical guide to free software
of open-source operating systems AROS BSD Darwin eCos FreeDOS GNU Haiku Inferno Linux Mach MINIX OpenSolaris Plan 9 ReactOS Eclipse F# Free Pascal FreeBASIC
Outline_of_free_software
Family of computer operating systems
software under the GNU General Public License. In addition to their use in the GNU operating system, many GNU packages – such as the GNU Compiler Collection
Unix
Finnish and American software engineer (born 1969)
Version 1.0 was released on 14 March 1994. Torvalds first encountered the GNU Project in the autumn of 1991 when another Swedish-speaking computer science
Linus_Torvalds
Computer operating system
of the Mach kernel developed at Carnegie Mellon University. (Other UNIX and UNIX-like implementations built on top of the Mach kernel are GNU Hurd, NeXTSTEP
Tru64_UNIX
Compiler backend for multiple programming languages
PE/COFF, Mach-O, and WebAssembly in descending order of completeness. lld is faster than both flavors of GNU ld.[citation needed] Unlike the GNU linkers
LLVM
Operating system kernel and predecessor to Mach
1985. Development of Accent led directly to the introduction of Mach, used in NeXTSTEP, GNU Hurd, and modern Apple operating systems including macOS and
Accent_kernel
Operating system
(BAFUG). NeXTBSD is based on the FreeBSD-CURRENT kernel while adding in Mach IPC, Libdispatch, notifyd, asld, launchd, and other components derived from
NextBSD
2010. "NESRomTool::NES ROM Quickstart". sadistech.com. "GNU tar 1.28: Basic Tar Format". gnu.org. "UVOX Universal Voxel Translator - Man Page". tox.land
List_of_file_signatures
Computer approximation for real numbers
unexpectedly harmful, especially w/ -shared". gcc.gnu.org. "Code Gen Options (The GNU Fortran Compiler)". gcc.gnu.org. "Bug in zheevd · Issue #43 · Reference-LAPACK/lapack"
Floating-point_arithmetic
Assembler for the Intel x86 architecture
formats, including COFF, OMF, a.out, Executable and Linkable Format (ELF), Mach-O and binary file (.bin, binary disk image, used to compile operating systems)
Netwide_Assembler
Unix operating system
derivatives of those projects, such as TrueOS. BSD-derived code, along with Mach code, also formed the basis for Darwin; that, in turn, has been incorporated
Berkeley Software Distribution
Berkeley_Software_Distribution
FreeBSD, and NetBSD GNU (also known as GNU/Hurd) Linux (see also List of Linux distributions) (alleged to be GNU/Linux see GNU/Linux naming controversy)
List_of_operating_systems
Computer operating system
adapted the Linux kernel to run as a user-space server hosted on top of the Mach microkernel version 3.0. This "single server" architecture makes the system
MkLinux
Kernel that provides fewer services than a traditional kernel
with Windows 11, uses a hybrid kernel design. As of 2012[update], the Mach-based GNU Hurd is also functional and included in testing versions of Arch Linux
Microkernel
Core of a computer operating system
processes. Some systems that use microkernels are QNX and GNU Hurd. In the case of QNX and GNU Hurd, user sessions can be entire snapshots of the system
Kernel_(operating_system)
Cross-platform document-oriented database
under the Server Side Public License (SSPL). MongoDB is a member of the MACH Alliance. The American software company 10gen began developing MongoDB in
MongoDB
based on the Mach kernel and 4BSD; the ancestor of macOS Apple Inc.'s Darwin, the core of macOS and iOS; built on the XNU kernel (part Mach, part FreeBSD
History of the Berkeley Software Distribution
History_of_the_Berkeley_Software_Distribution
Copy-on-write file system developed by Apple
Simon Gander GNU GPL v2 FUSE Yes No No No No Development has been stalled since March 2023 linux-apfs-rw with apfsprogs Ernesto A. Fernández GNU GPLv2 Linux
Apple_File_System
Package manager for Red Hat systems
(2025-10-23). "The Histories, Similarities and Differences of the APT and DNF GNU/Linux Package Managers". Djere.com. Retrieved 2025-11-24. Edge, Jake (2014-01-15)
DNF_(software)
Open-source implementation of ZFS file system
"Debian GNU/kFreeBSD FAQ". Is there ZFS support?. Archived from the original on September 27, 2013. Retrieved September 24, 2013. "Debian GNU/kFreeBSD
OpenZFS
Minimalist philosophies in hardware and software
Richard (28 October 2002). "My Lisp Experiences and the Development of GNU Emacs". GNU.org. Free Software Foundation, Inc. Archived from the original on 23
Minimalism_(computing)
only for existing software which is impractical to replace, such as the GNU Compiler Collection. NDAs are never considered acceptable. In common with
Comparison of BSD operating systems
Comparison_of_BSD_operating_systems
National laboratory in Albuquerque, New Mexico
parallel atomic/subatomic processes at large scale. It is produced under the GNU General Public License (GPL) and distributed on the Sandia National Laboratories
Sandia_National_Laboratories
Artificial terrain rendering software
Linux, Windows Platform Cross-platform Type Scenery generator License GPL, Version 3, or newer Website picogen.org Repository git.sv.gnu.org/picogen.git
Picogen
Debugger for kernel development
stub implementing low-level operations, with a full-blown debugger such as GNU Debugger (gdb), running on another machine, sending commands to the stub
Kernel_debugger
Combined executable file for multiple processor types or operating systems
and the CPU type and subtype which the Mach-O binary (within the archive) is targeted at. The version of the GNU Compiler Collection shipped with the Developer
Fat_binary
Computational fluid dynamics software package
under the GNU General Public License since 2007, it is based on a co-located finite volume method and can simulate incompressible or low-Mach number dilatable
Code_Saturne
visionOS, and bridgeOS, includes code from FreeBSD and the Mach kernel from Carnegie Mellon Debian GNU/kFreeBSD - [defunct] operating system with a FreeBSD
List of products based on FreeBSD
List_of_products_based_on_FreeBSD
Period when a computer system is available
standard, neither SUS nor POSIX. On Linux, an uptime command is part of GNU coreutils, BusyBox and Toybox. On BSD, the uptime command is hard link to
Uptime
File containing relocatable format machine code
programs take to begin running, and thus the responsiveness for users. The GNU Project's Binary File Descriptor library (BFD library) provides a common
Object_file
Type of software
Plug-in GNU-GPL V2 A.N.T.Landscape BlenderGIS Blender add-on Plug-in GNU-GPL V3 Cedric Lepiller Picogen GPL, Version 3, or newer Sebastian Mach Infinigen
Scenery_generator
IDE including tools for developing software for Apple platforms
limited to Cocoa, Carbon, and Java. Third parties have added support for GNU Pascal, Free Pascal, Ada, C#, Go, Perl, and D. Xcode can build fat binary
Xcode
Component of a computer process
Saltzer (1966) credits Victor A. Vyssotsky with the term "thread". The Mach implementation of threads was described in the summer of 1986. OS/2 1.0,
Thread_(computing)
2024 game show hosted by Rob Lowe
Attribution-Sharealike 4.0 International License (CC BY-SA 4.0) and the GNU Free Documentation License (GFDL) (unversioned, with no invariant sections
The Floor (American game show)
The_Floor_(American_game_show)
Arduinome (software circuit platform) CPU Sim Electric VLSI Design System gLogic GNU Circuit Analysis Package KTechLab Linear Technology (a/d, circuit software
List_of_music_software
Numeric value with an unclear meaning
original on 2022-11-30. Retrieved 2023-03-28. "GNU GRUB Installation, Section 3.4: BIOS installation". Gnu.org. Archived from the original on 2023-03-15
Magic_number_(programming)
American computer scientist
where he and his group worked on systems software such as the GNU compiler tools and the Mach operating system. In 1990, Lepreau became the assistant director
Jay_Lepreau
Family of second-generation microkernels
assembly language code in 1993 created attention by being 20 times faster than Mach. The follow-up publication two years later was considered so influential
L4_microkernel_family
Open source browser engine
the WebCore and JavaScriptCore components, which are available under the GNU Lesser General Public License. As of March 7, 2013, WebKit is a trademark
WebKit
Behavior of projectiles in flight
Atmosphere sea level conditions (air density ρ = 1.225 kg/m³, Mach 1 = 340.3 m/s, Mach 1.2 = 408.4 m/s) predicted this for the projectile velocity and
External_ballistics
Linux kernel security module
released the first version to the open source development community under the GNU GPL on 22 December 2000. The software was merged into the mainline Linux
SELinux
Command line utility of DOS and Microsoft Windows operating systems
HPFS. They replaced fdisk with the Logical Volume Manager (LVM). fdisk for Mach Operating System was written by Robert Baron. It was ported to 386BSD by
Fdisk
Snapshot of computer memory data
is the GNU binutils' objdump. On modern Unix-like operating systems, administrators and programmers can read core dump files using the GNU Binutils
Core_dump
Research distributed operating system
achieved some level of popularity. Several projects seek to replace the GNU operating system programs surrounding the Linux kernel with the Plan 9 operating
Plan_9_from_Bell_Labs
Free and open-source operating system
subsystem being developed is similar to those found in microkernels such as Mach, though it is less complex by design. DragonFly's messaging subsystem has
DragonFly_BSD
2019 operating system version
backgrounds in Photo Booth has been removed. The command-line interface GNU Emacs application has been removed. Built-in support for Perl, Python 2.7
MacOS_Catalina
multiple unit trains. Richard Stallman (born 1953), U.S. – GNU operating system, GNU Emacs, GNU Compiler Collection Ladislas Starevich (1882–1965), Russia/France
List_of_inventors
64-bit extension of x86 architecture
directory names containing x86-64 files. x86_64 The Linux kernel and the GNU Compiler Collection refers to 64-bit architecture as "x86_64". Some Linux
X86-64
Interdisciplinary theory behind quantum computing
Bell's inequality Davisson–Germer Double-slit Elitzur–Vaidman Franck–Hertz Mach–Zehnder Delayed-choice quantum eraser Stern–Gerlach Rutherford Formulations
Quantum_information_science
Free framework for reverse-engineering software
COFF and derivatives, including Win32/64/generic PE ELF and derivatives Mach-O (Mach) and derivatives Game Boy and Game Boy Advance cartridges MZ (DOS) Java
Radare2
Copy-on-write file system
Core 3.0.1 26 b134+ GNU userland NexentaStor Community 3.0.1 26 b134+ up to 18 TB, web admin NexentaStor Community 3.1.0 28 b134+ GNU userland NexentaStor
ZFS
Table inside a master boot record
{{cite web}}: CS1 maint: deprecated archival service (link) "GNU Hurd: Remove UFS support". "GNU Hurd: NEWS 1995". DragonFly BSD commit 794d80a: Change legacy
Partition_type
Method of data analysis
SAS, R, MATLAB, Mathematica, SciPy, IDL (Interactive Data Language), or GNU Octave as well as OpenCV. Matrix D will take the form of an p × p diagonal
Principal_component_analysis
Description of a quantum-mechanical system
qubit CSS GKP quantum convolutional stabilizer Shor Bacon–Shor Steane Toric gnu Entanglement-assisted Physical implementations Quantum optics Cavity QED
Schrödinger_equation
of finite element software packages Open source hp-FEM codes Karban, P., Mach, F., Kůs, P., Pánek, D., Doležel, I.: Numerical solution of coupled problems
Agros2D
Battery-electric full-size car
software (OSS), which is publicly available. Tesla uses OSS like Linux, the GNU toolchain, Buildroot, and community projects like Ubuntu. From 2021, Tesla
Tesla_Model_S
Free and open-source Unix-like operating system
(rump_fs) and as a library plugin for its modular VFS (vfs_rump.lib.so). GNU Hurd; implements multiple rump kernel deployments to get modern device drivers
NetBSD
Disk utility for macOS
drives. Apple Software Restore Logical Disk Manager Palimpsest Disk Utility GNU Parted diskpart fdisk cfdisk sfdisk "Intro to Disk Utility on Mac". Apple
Disk_Utility
Computer operating system
creating a Windows clone for x86 platforms, intended to be released under the GNU General Public License. Started in 1996 by Reece K. Sellin, the project was
Microsoft_Windows
LIST – variable list Mach-O – (no suffix for executable image, .o for object files, .dylib and .bundle for shared object files) Mach-based systems, notably
List_of_file_formats
Isai Scheinberg – IBM engineer, founded PokerStars Bill Schelter – GNU Maxima, GNU Common Lisp John Scholes – Direct functions Randal L. Schwartz – Just
List_of_programmers
Web browser by Apple
and JavaScriptCore are free software and released under the terms of the GNU Lesser General Public License. Some Apple improvements to the KHTML code
Safari_(web_browser)
Translator of computer source code
WordStar 3.0 in September 1981. ARC-Softwaresystems (June 1988). "Aus BASIC mach C: B→C Transpiler" [Turn BASIC into C: B→C Transpiler]. Amiga-Magazin (Advertisement)
Source-to-source_compiler
Interdisciplinary research area
Bell's inequality Davisson–Germer Double-slit Elitzur–Vaidman Franck–Hertz Mach–Zehnder Delayed-choice quantum eraser Stern–Gerlach Rutherford Formulations
Quantum_machine_learning
Email client by Apple
Claws Mail Cleancode eMail Evolution fetchmail fdm Geary getmail GNUMail Gnus Gnuzilla IMP K-9 Mail KMail Mahogany Mailpile Mailx Mailx (Heirloom) Modest
Apple_Mail
Quantum physics of light and matter in a cavity
Bell's inequality Davisson–Germer Double-slit Elitzur–Vaidman Franck–Hertz Mach–Zehnder Delayed-choice quantum eraser Stern–Gerlach Rutherford Formulations
Cavity quantum electrodynamics
Cavity_quantum_electrodynamics
Quantum error correcting code
Bell's inequality Davisson–Germer Double-slit Elitzur–Vaidman Franck–Hertz Mach–Zehnder Delayed-choice quantum eraser Stern–Gerlach Rutherford Formulations
Gottesman–Kitaev–Preskill code
Gottesman–Kitaev–Preskill_code
0.7 Ultrix Unix System III VAXELN 1983 Apple III Plus Coherent DNIX EOS GNU (project start) Lisa Office System 7/7 LOCUS – UNIX compatible, high reliability
Timeline_of_operating_systems
Software
Compuserve Graphics Interchange Format GPR - GoPro Raw (DNG-based) GZ, GZIP - GNU ZIP compressed archive HDP, WDP, JXR - Windows HD Photo / Media Photo / JPEG
ExifTool
Computer operating system
replaced by the open-source GNV (GNU's not VMS) project, which was first included in OpenVMS media in 2002. Amongst other GNU tools, GNV includes a port of
OpenVMS
MacOS framework
Objective-C Cocoa programs in a simple text editor and build it manually with GNU Compiler Collection (GCC) or Clang from the command line or from a makefile
Cocoa_(API)
Integrated software development environment
tools: Interface Builder and Project Builder, which were built on top of the GNU Compiler Collection. Metrowerks responded by porting CodeWarrior to Microsoft
CodeWarrior
GNU MACH
GNU MACH
Boy/Male
Hindu, Indian, Marathi, Sanskrit
Charming; Lovely; Handsome
Boy/Male
Norse
Took refuge in Iceland after several killings he performed.
Girl/Female
Indian, Norse, Tamil
God
Female
Thai/Siamese
Thai name A-GUN means "grape."
Boy/Male
Hindu
An atom
Male
Babylonian
, Adad-Anu.
Girl/Female
Indian
Sweet Like Sugar
Female
Finnish
Estonian and Finnish pet form of Greek Hanna, ANU means "favor; grace."
Boy/Male
Australian, Japanese
Tough; Strong
Boy/Male
Christian, Finnish, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Punjabi, Sanskrit, Sikh, Telugu
An Atom; Angel; Messenger of God; Love; Sky
Girl/Female
Bengali, Celebrity, Finnish, Gujarati, Hindu, Indian, Malayalam, Marathi, Punjabi, Sanskrit, Sikh, Sindhi, Tamil, Telugu, Traditional
Atom; Silence; Favour; Grace; A Prefix; Beauty
Female
African
second-born child.
Boy/Male
Australian, Basque, Farsi, French
Ox; Bull; Cow
Boy/Male
Indian, Sikh
Brave; Wise
Girl/Female
Norse
One of Frigga's ladies in waiting.
Female
Egyptian
, child of Nu.
Girl/Female
Indian
Attribute, Excellence, Merit, Quality, Virtue
Girl/Female
Christian, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sindhi, Telugu
Attractive
Boy/Male
Australian, German, Indian, Punjabi, Scandinavian, Sikh
Warrior
Male
Babylonian
, Anu, is prince; Anammelech.
GNU MACH
GNU MACH
Boy/Male
Muslim
Prince
Girl/Female
Basque, Finnish, French, German, Swedish
Golden Dawn; Wind; Breeze
Boy/Male
Hindu, Indian, Marathi
To Come Forth; Appear
Boy/Male
Hindu, Indian, Marathi
Mountain
Surname or Lastname
English
English : habitational name from any of the many places so named, from Old English nēowe ‘new’ + tūn ‘enclosure’, ‘settlement’. According to Ekwall, this is the commonest English place name. For this reason, the surname has a highly fragmented origin.
Male
Swiss
, man or hero of God.
Male
Arthurian
, (fair, handsome; and, bright, clear, lucid); a Fisher King.
Girl/Female
Indian, Sikh
Work of Heart
Boy/Male
Hindu, Indian
Great
Boy/Male
Australian, German, Greek, Russian
Divine Gift; Gift Form God
GNU MACH
GNU MACH
GNU MACH
GNU MACH
GNU MACH
n.
One of two species of large South African antelopes of the genus Catoblephas, having a mane and bushy tail, and curved horns in both sexes.
pl.
of Genu
n.
A weapon which throws or propels a missile to a distance; any firearm or instrument for throwing projectiles by the explosion of gunpowder, consisting of a tube or barrel closed at one end, in which the projectile is placed, with an explosive charge behind, which is ignited by various means. Muskets, rifles, carbines, and fowling pieces are smaller guns, for hand use, and are called small arms. Larger guns are called cannon, ordnance, fieldpieces, carronades, howitzers, etc. See these terms in the Vocabulary.
n.
A piece of heavy ordnance; in a restricted sense, a cannon.
n.
A bed in a gun carriage.
v. i.
To practice fowling or hunting small game; -- chiefly in participial form; as, to go gunning.
n.
The gnu.
n.
The gnu.
n.
Violent blasts of wind.
n.
The knee.
v. t.
To adjust (a gun) on its carriage; also, to train (a gun) for horizontal firing.
n.
The brindled gnu. See Gnu.
n.
See Gun cotton, under Gun.
n.
The kneelike bend, in the anterior part of the callosum of the brain.
v. t.
To load again, as a gun.
v. t.
The mountings of a gun.