What does version mean in linux?

In Linux, version means version, which is the version identification number. Each operating system has a version identification number. The version number allows users to understand whether the operating system is the latest version and the functions and facilities provided by the system. The version number can be divided into two parts: a major version number and a minor version number.

#The operating environment of this tutorial: linux7.3 system, Dell G3 computer.

What does version mean in Linux

The version number (version number) is the identification number of the version. Every operating system (or, broadly speaking, every piece of software) has a version number. The version number allows users to know whether the operating system they are using is the latest version and the functions and facilities it provides. Each version number can be divided into two parts: a major version number and a minor version number.

The Linux kernel uses three different version numbering methods.

The first method is used before version 1.0 (including 1.0). The first version was 0.01, followed by 0.02, 0.03, 0.10, 0.11, 0.12, 0.95, 0.96, 0.97, 0.98, 0.99 and then 1.0.

The second method is used from 1.0 to 2.6. The number consists of three parts "A.B.C", A represents the major version number, B represents the minor version number, and C represents the smaller final version number.

The third method, starting from version 2.6.0 in 2004, uses a "time-based" method. Before version 3.0, it was an "A.B.C.D" format. In seven years, the first two numbers A.B, namely "2.6", have remained unchanged, C has increased with the release of new versions, and D represents the number of bug fixes, security updates, and the number of new features and drivers added.

Linux kernel The second method only changes when the kernel changes significantly (it has only happened twice in history, 1.0 in 1994 and 2.0 in 1996). You can judge whether Linux is stable by the number B. The even-numbered B represents the stable version, and the odd-numbered B represents the development version. C represents the number of bug fixes, security updates, new features and drivers.

Taking version 2.4.0 as an example, 2 represents the major version number, 4 represents the minor version number, and 0 represents the final version number with minor changes. In the version number, the version with an even number in the second digit of the serial number indicates that it is a stable version that can be used, such as 2.2.5, while the version with an odd number in the second digit of the serial number has some new things added, and it is not necessarily a very stable version. Stable beta versions such as 2.3.1.

In this way, the stable version is derived from the upgrade version number of the previous beta version, and a stable version will no longer develop after it develops to full maturity.

After version 3.0, there is the "A.B.C" format, B increases with the release of new versions, and C represents the number of bug fixes, security updates, new features and drivers. In the third method, the naming method such that even numbers represent stable versions and odd numbers represent development versions is no longer used. For example: 3.7.0 does not represent the development version, but the stable version.

Related recommendations: "Linux Video Tutorial"

The above is the detailed content of What does version mean in linux?. For more information, please follow other related articles on the PHP Chinese website!