Note: All the information provided here and in the following blogs is completely my way of understanding things and I have collected them from various sources including books, websites, etc. Functions of an Operating System: Security : Uses techniques like password protection to protect user data and prevent unauthorized access. Control over system performance : Monitors overall system health, records the response time between service requests and system response, helps improve performance, by providing important information needed to troubleshoot problems Job accounting : Keeps track of time and resources used by various tasks and users, which can be used to track resource usage for a particular user or group of users Error detecting aids : Constantly monitors the system to detect errors and avoid malfunctioning of computer system Coordination between software and users : Coordinates and assigns interpreters, compilers, assemblers, and other software to the various users o...