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.