List any four functions of operating system?

Sure! Here are four functions of an operating system:

1. Process management: The operating system manages the execution of processes, which are programs in execution. It allocates system resources such as CPU time, memory, and input/output devices to different processes, ensuring efficient and fair execution.

2. Memory management: The operating system is responsible for managing the computer's memory. It allocates and deallocates memory space to different processes, tracks the usage of memory, and ensures that processes do not interfere with each other's memory.

3. File system management: The operating system provides a file system that allows users to organize and access their data. It manages files and directories, handles file permissions, and provides mechanisms for file storage, retrieval, and manipulation.

4. Device management: The operating system controls and coordinates the use of input/output devices such as keyboards, mice, printers, and network interfaces. It provides device drivers that enable communication between the hardware devices and the software running on the computer.

These are just a few examples of the functions performed by an operating system.