[Linux kernel] Compile the Linux kernel① (Download the Linux kernel source code of the specified version | Meaning of Linux kernel version number | Major version number | Minor version number | Minor version number | Stable version )

1. Download the Linux kernel

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1. Download the latest version of the Linux kernel

Go to the official Linux kernel website https://www.kernel.org/ to download the Linux kernel, click the yellow "Latest Release" button on the right to download the latest Linux kernel release;

The latest version of the Linux kernel has 122MB;

2. Download the specified version of the Linux kernel

Target: Download $\mathrm{5.6.14}versionoftheLinux$ kernel$;$

• Major version number: $5$
• This version number: $6$
• Minor version number (number of revisions): $14$

In the Linux kernel official website https://www.kernel.org/ page, click the https://www.kernel.org/pub/ link,

Go to the Linux kernel public page, go to https://mirrors.edge.kernel.org/pub/ page,

Click the linux directory, go to the https://mirrors.edge.kernel.org/pub/linux/ page,

Click the kernel link, go to https://mirrors.edge.kernel.org/pub/linux/kernel/ page,

Select the v5.x version, go to https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ page, in this interface you can directly download the linux-5.6.14.tar.gz file, this is $\mathrm{5.6.14}versionLinuxkernelsource$ code$;$

2. The meaning of the Linux kernel version number

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Take $Examplefor$ version$\mathrm{5.6.14}$$:$$\_$$\_$

• Major version number: $5$
• Minor version number: $6$
• Minor version number (number of revisions): $14$

Version stability:

• Stable version: The minor version number is an even number, indicating that this version of the Linux kernel is a stable version that can be used.

• Unstable version: If the minor version number is odd, it means that in this version, a new module has been added, and the stability cannot be guaranteed, such as $\mathrm{5.7.14}istheunstableversion$ ,$\_$