What are the basic services provided by the os?

       An os  provides basic services to the program for execution and owner of the program. Those are-------

       1. To load program into memory and execute it.
       2. File system handling.
       3. Input output operation and resource allocation.
       4. Communication between process biosphere memory or message passing.
       5. Error handling.
       6. Security and and protection.
       7. Record Keeping of user and system.
       8. Memory management.
       9. Process management.
     10. Auto backup and recovery management.