Linux Kernel Version Numbering
Because there are numerous revisions and releases of the Linux kernel and new ones are developed at frequent intervals, it is important to have a system for clearly identifying them.
A kernel is a program that constitutes the central core of a computer operating system and which has complete control over everything that occurs in the system. The Linux kernel was originally developed by Linus Torvalds, who based it on (but did not copy) both UNIX and MINIX (an open source clone of UNIX).
The initial Linux kernels had a very simple numbering system. The first, which was released by Torvalds in September 1991, was designated 0.01. This was followed the next month by the 0.02 kernel. The current version numbering system began with the kernel 1.0, which was released in March 1994.
Linux kernels are now identified by a set of four numbers, sometimes supplemented by several additional characters. The first number denotes the kernelversion. It is changed least frequently, and only when truly major changes in the concept and the code of the kernel occur. In fact, it has been changed only twice in the history of the kernel: in 1994 with version 1.0 and in 1996 with version 2.0.
The second number denotes the major revision of the kernel version. It was formerly the case that even numbers indicated a stable release, that is, one that was deemed fit for production use (i.e., use in a non-experimental environment), such as 1.2, 2.4 or 2.6. Likewise, odd numbers, such as 1.1 or 2.5, have historically represented development releases. They were for testing new features and device drivers until they became sufficiently stable to be included in a stable release. However, this has changed starting with the Linux 2.6.x series, and new feature development now takes place in the same revision number.
The third number indicates the minor revision of the kernel. It is only changed when new features or new drivers are added. The fourth number represents corrections, such as security patches and bug (i.e., error) fixes.
Sometimes the four numbers will be followed by several letters, such as rc1, ac, ck and mm. The letters rc (followed by a number) refer to a release candidateand thus indicate a non-official release. Other letters usually indicate the person responsible for that release, such as Alan Cox, Con Kolivas and Andrew Morton.
As of May 29, 2006 the newest release was 2.6.16.18, which was released on May 22. This superseded 2.6.16.17, which was released on May 20. The first version of the 2.6 kernel, 2.6.0, was released on December 18, 2003, and the current 2.6.16 minor revision was released on March 20, 2006.
There are several ways to determine which release of the kernel is being used on any particular system. Perhaps the easiest is to use the uname command(which reports basic information about a system's hardware and software) with its -r option, that is,
uname -r
Linux Kernel Version Numbering的更多相关文章
- 各个安卓版本 使用的 Linux Kernel Version
Android Version |API Level |Linux Kernel in AOSP --------------------------------------------------- ...
- Linux kernel version dirty
在我们使用git来管理Linux Kernel的时候,在编译的时候会在你的kernel version加上git commit number 有时候还会出现dirty字样,字面意思是内核被污染的意思. ...
- Understanding Linux Kernel version 3 读书笔记
P30, preemptive kernel .kernel threading 和Multithreaded application support没太好理解,我想如果设计个多线程的程序来运行运行 ...
- Linux kernel Wikipedia
http://en.wikipedia.org/wiki/Linux_kernel Development model The current development model of the Lin ...
- Linux Kernel: buffers和cached的区别
The page cache caches pages of files to optimize file I/O. The buffer cache caches disk blocks to op ...
- 【嵌入式开发】 Linux Kernel 下载 配置 编译 安装 及 驱动简介
作者 : 韩曙亮 转载请出名出处 : http://blog.csdn.net/shulianghan/article/details/38636827 一. Linux 内核简介 1. 内核功能简介 ...
- 转 Comparison of Red Hat and Oracle Linux kernel versions and release strings
Originally derived from Red Hat Enterprise Linux (RHEL), Oracle Linux (OL) contains minor difference ...
- ANALYSIS AND EXPLOITATION OF A LINUX KERNEL VULNERABILITY (CVE-2016-0728)
ANALYSIS AND EXPLOITATION OF A LINUX KERNEL VULNERABILITY (CVE-2016-0728) By Perception Point Resear ...
- How to: Compile Linux kernel 2.6
Compiling custom kernel has its own advantages and disadvantages. However, new Linux user / admin ...
随机推荐
- javascript实现图片滚动
闲来无事捣鼓了一个原来的js图片滚动 首先看看 静态页的结构: <body> <a href="javascript: le()">向左</a> ...
- JSP 基础语法
1.JSP简介 含义:是运行在服务器端的java页面,是动态网页技术,开发时采用html嵌套java代码的方式实现的 JSP的执行流程是什么? 翻译阶段:web服务器收到jsp请求时,把jsp文件翻译 ...
- C#:Hashtable和Dictionary
Dictionary<TKey, TValue> () Hashtable() 第一.存储的数据类型 Hashtable不是泛型的,不是类型安全的:Dictionary是泛型的, ...
- Install Google Pinyin on Ubuntu 14.04
Install Google Pinyin on Ubuntu 14.04 I've been spending more and more time on Ubuntu and I'm not us ...
- JS中的各种类型转换规则(转)
JS中的类型转换非常恶心,大家都懂的,不过该学还是要学. 今天看犀牛书看到了转换规则,总结出来. X转字符串.数字.布尔值 X表示各种类型的值,直接上图: 值 转数字 转字符串 转布尔值 undefi ...
- 关于web2py外网访问,图形界面不显示等问题的解决办法
首先系统版本是ubuntu 15.04,系统默认安装了两个版本的python, sudo python web2py.py 默认会调用python2.7版本来执行 会提示 pydo@planpls:/ ...
- 深入SpringBoot:自定义PropertySourceLoader
http://www.jianshu.com/p/5206f74a4406 ********************************* 前言 上一篇文章介绍了SpringBoot的Enable ...
- 【matlab】合并两个cell
a=cell(1,2);a{1}=zeros(1,2);a{2}=zeros(2,2); b=cell(1,2);b{1}=zeros(1,3);b{2}=zeros(1,3);aa=[a,b] ...
- linux笔记:shell基础-bash变量
shell变量设置规则: 变量的分类: 环境变量的设置: 系统常见环境变量: 位置参数变量(用来接收脚本的参数): 预定义变量: 接收键盘输入(将键盘输入的值赋值给变量名): 用declare声明变量 ...
- ubuntu忘记密码怎么办
刚安装了,ubuntu14.04,就想着,如果忘记登录密码,这可不好办,所以测试下开机,刚过bios显示画面,不停的点击,,键盘左边的shift键.(因为刚开始是采用按着不放的办法,结果不灵.所以我不 ...