Service provided By An Operating System.

List of five service provided by an operating system. Explain how

each provides convenience to users?

The main purpose of operating system is to provide environment for the execution of programs. Thus an operating system provides certain services to program and the users of those programs.

However , different operating system can provide different set of service. Some of the basis services provided by operating system are:

1. Program execution

· Operating system provides a convenient environment where users can run their programs

· The operating system performs memory allocation to programs, load them into appropriate location so that they can execute. The users need not to worry about all these tasks.

2. I/O Operation

· in order to execute a program,it usually requires an I/O operations. For example , it may need a file and print the output.

· When all these I/O operation are performed users cannot I/O devices.

3. File system manipulation

· The execution of a program may involve reading data from or writing data to file . it may also require to create or delete a certain file.

· The operating system provides all these operation and performs secondary storage management.

4. Communication

· The various process executing on a system

· may have multiple execution flows, different once belonging to difficult threads.

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