Understanding the Linux Kernel, Boot Process and File System Hierarchy
Let us settle in for a session that goes right to the heart of how Linux actually works. We are going to start at the very bottom, with the kernel, and slowly build our way up through hardware management, the boot process, run levels, file types, and finally the file system hierarchy. By the end of this, when you type a command in a Linux shell, you should have a mental picture of what is happening behind the scenes.