How does Linux add functionality on the fly?

Linux Modules is how we add new devices and new features to the Linux kernel when we only want to use them selectively. Maybe one server needs them and another server doesn't. Rather than compile them into the kernel we can simply load them real time, when we need them. Today I am going to look at Loadable Modules in Linux, what came before, why we need them and how do they work. I also describe three commands for inspecting and managing modules on your system.

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