Operating System Services.pptx

Operating System Services

1. Services of Operating System Dr. Gowthami V

2. Services of Operating System Program Execution: Load and execute programs into memory. Provide mechanisms to start, pause, resume, and terminate processes. I/O Operations: Handle input and output operations to and from devices such as disks, printers, and networks. Offer file system services to manage files and directories.

3. File System Manipulation: Provide file creation, deletion, reading, writing, and permission management. Manage file metadata such as timestamps and attributes. Communication Services: Facilitate inter-process communication (IPC) between different processes. Offer mechanisms like pipes, sockets, and message queues for data exchange.

4. Error Detection and Handling: Monitor for errors and exceptions, such as hardware failures or invalid memory accesses. Provide error handling mechanisms to minimize system crashes. Security and Authentication: Implement user authentication and authorization mechanisms. Enforce security policies to control access to system resources.

5. Networking Services: Manage network connections, protocols, and data transmission. Support features like IP addressing, routing, and firewall management. Memory Management: Allocate and manage memory for processes and applications. Implement techniques like virtual memory to optimize memory usage.

6. Process Management: Create, schedule, and terminate processes. Implement process synchronization and communication mechanisms. Device Management: Control and manage hardware devices, such as printers, displays, and storage devices. Provide device drivers to interface with specific hardware components.

7. Time and Clock Services: Provide system timekeeping and scheduling mechanisms. Handle timers and alarms for scheduling tasks and events.