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This is an accepted version of this page This is the latest accepted revision, reviewed on 20 January 2025. Family of Unix-like operating systems This article is about the family of operating systems. For the kernel, see Linux kernel. For other uses, see Linux (disambiguation). Operating system Linux Tux the penguin, the mascot of Linux Developer Community contributors, Linus Torvalds Written ...
A simplified structure of the Linux kernel. File systems are implemented as part of the I/O subsystem. Device nodes correspond to resources that an operating system's kernel has already allocated. Unix identifies those resources by a major number and a minor number, [5] both stored as part of the structure of a node.
The Linux kernel is a free and open source, [11]: 4 Unix-like kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the GNU operating system (OS) which was created to be a free replacement for Unix.
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 January 2025. Software licensed to ensure source code usage rights Open-source software shares similarities with free software and is part of the broader term free and open-source software. For broader coverage of this topic, see open-source-software movement. It has been suggested that this article ...
It can also be installed on a single board computer like the Raspberry Pi. [15] The Linux kernel's support for namespaces mostly [16] isolates an application's view of the operating environment, including process trees, network, user IDs and mounted file systems, while the kernel's cgroups provide resource limiting for memory and CPU. [17]
[10] iOS is the world's second most widely installed mobile operating system, after Android. As of December 2023, Apple's App Store contains more than 3.8 million iOS mobile apps. [11] iOS is based on macOS. Like macOS, it includes components of the Mach microkernel and FreeBSD. [12] [13] It is a Unix-like operating system.
FreeBSD is a free-software Unix-like operating system descended from the Berkeley Software Distribution (BSD). The first version was released in 1993 developed from 386BSD [3] —the first fully functional and free Unix clone—and has since continuously been the most commonly used BSD-derived operating system.