In this chapter, you learned about the Linux kernel in general, about its features and methods of interacting with it. There was also information about debugging and porting features. All this was done to make sure that you would get enough information about the whole ecosystem before interacting with it. It is my opinion that if you understand the whole picture first, it will become easier to focus on the more specific things. This is also one of the reasons that the Yocto Project reference was kept toward the end. You were introduced to how a Linux kernel recipe and a Linux kernel external module are defined and used later by a given machine. More information on Linux kernels will also be available in the next chapter, which will gather all the previously presented information and will show you how a developer can interact with a Linux operating system image.

Besides this information, in the next chapter, there will be an explanation about the organization of the root file system...