What is the linux kernel version

The linux kernel version refers to the version number of the core program of the Linux operating system. The Linux kernel is an open source operating system kernel, developed with contributions from the Linux open source community led by Linus Torvalds. Each Linux kernel version has a unique identification number, including a major version number, a minor version number, and a revision number. .

The operating environment of this tutorial: Linux5.18.14 system, Dell G3 computer.

The Linux kernel version refers to the version number of the core program of the Linux operating system. The Linux kernel is an open source operating system kernel developed with contributions from the Linux open source community led by Linus Torvalds. Each Linux kernel version has a unique identification number, including a major version number, a minor version number, and a revision number.

The version number of the Linux kernel follows certain naming rules. Usually, changes in the major version number represent major changes to the basic architecture and functionality, changes in the minor version number represent smaller changes, and changes in the revision number are used to fix bugs and add small features. For example, the version number of the Linux kernel can be 4.18.10, where the major version number is 4, the minor version number is 18, and the revision number is 10.

The version number of the Linux kernel will be marked with a unique identifier in the operating system when it is released. This version number is very important in the Linux operating system because it represents the new features, performance optimizations and security fixes brought by different kernel versions. Users can judge whether they need to update the kernel in time based on the version number of the Linux kernel in order to obtain a better user experience and fix known security vulnerabilities.

Each Linux kernel version is managed by a release plan and release cycle to ensure timely updates and fixes. Version updates of the Linux kernel usually occur every few months to a year, depending on the progress of developers working on new features and bug fixes.

The version update of the Linux kernel is an ongoing process. Many developers and contributors in the community continue to submit code, fix bugs and improve functions to improve the performance and stability of the kernel. This open source development model ensures the continuous evolution and improvement of the Linux kernel.

In addition to the official Linux kernel version, there are also branch versions, such as long-term support (LTS) versions and rolling release versions. Long-term support releases typically provide support and maintenance for an extended period of time, while immediate release releases typically see new features and updates released more frequently. Users can choose different versions to meet their needs.

In short, the Linux kernel version refers to the version number of the core program of the Linux operating system. It is very important to understand and choose the Linux kernel version that suits your needs. It will directly affect the performance, stability and security of the system. Users can learn about the latest versions and improvements by constantly paying attention to the dynamics of the Linux community and participating in discussions.

Linux kernel version evolution

1. Early versions (1991-1996)

1. Linux 0.01 (1991): This is the first version of the Linux kernel , only supports Intel 80386 processor and has very basic functions.

2. Linux 0.11 (1991): Based on version 0.01, it added support for some devices and system calls, and was the first version that could run normally.

3. Linux 1.0 (1994): This is the first official stable version, supporting more hardware devices and file systems.

2. Mid-term version (1996-2007)

1. Linux 2.0 (1996): Introduced support for Symmetric Multiprocessing (SMP), enabling Linux to run on multi-processor systems .

2. Linux 2.2 (1999): Introduced support for USB devices and software RAID, improving system scalability and performance.

3. Linux 2.4 (2001): Has better network performance and reliability, introduces firewall and embedded system support.

4. Linux 2.6 (2003): Introduced a series of important improvements, such as kernel threads, support for more file systems (such as Ext3 and XFS) and dynamic loading of device drivers.

5. Linux 2.6.28 (2008): Introduced behavior-based process scheduler and underlying device driver improvements.

3. Modern version (2007-present)

1. Linux 3.x (2011): Introduced functions such as energy management and automatic adjustment of the scheduler, improving system performance.

2. Linux 4.x (2015): Supports more file systems (such as Btrfs and F2FS), introduces new graphics driver model (DRM) and kernel module signatures, etc.

3. Linux 5.x (2019): Introduces a real-time predictive performance scheduler and scalability improvements, supporting more architectures (such as ARM).

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