Ydinmoduulit

Ydinmoduulit, often translated as "core modules" or "kernel modules" in English, are a fundamental concept in operating systems, particularly in Unix-like systems such as Linux. They represent pieces of code that can be dynamically loaded into and unloaded from the operating system's kernel at runtime. This dynamic loading capability allows the kernel to be smaller and more efficient, as it only needs to load the code for hardware devices or functionalities that are actually in use.

The primary purpose of ydinmoduulit is to extend the functionality of the kernel without requiring a system reboot. This is especially useful for supporting new hardware devices. When a new piece of hardware is connected, the operating system can load the appropriate ydinmoduuli, which contains the necessary drivers and code to interact with that hardware. Conversely, if a device is no longer needed, its corresponding ydinmoduuli can be unloaded, freeing up system resources.

Common examples of ydinmoduulit include device drivers for graphics cards, network interfaces, sound cards, and storage controllers. They also encompass various other functionalities like file system support, networking protocols, and inter-process communication mechanisms. The ability to manage these modules provides significant flexibility and maintainability for operating systems. Tools like `insmod` and `rmmod` are used in Linux to load and unload these modules, respectively, while `lsmod` lists currently loaded modules. This modular design is a cornerstone of modern operating system architecture.