Brief Introduction to Linux Kernel

Now many of us are familiar with the Linux kernel version number system, but AndriesBrouwer reminds us how it is actually irregular.
The first public version of Linux is October 1991 in 0.02. Two months later, in December 1991, Linus released version 0.11, the first independent kernel that can be used without relying on Minix. One month after the release of version 0.12, the version number jumped to version March on April 9, 0.95, reflecting that the system is becoming mature. Not only that, but two years later, that is, March 1994, the milestone 1.0.0 was completed.
Start to use the two "path" numbering method to mark the development of the kernel. The kernel with an even number, such as 1.0, 2.2, and 2.4, is now 2.6) is stable and the "product" model. At the same time, kernel versions 1.1 and 2.3 with odd numbers are cutting-edge or "developing" kernels. Recently, a stable kernel was released and the development of the new kernel began in a few months. However, 2.5 of development work starts several ten months after 2.4 is completed.
It is hard to say when to launch the 2.7 Linux kernel, but there is a thread to be discussed in KernelTrap.