BELAJAR BERSAMA

One set of operating-system services provides functions that are
helpful to the user:
1.User interface - Almost all operating systems have a user interface (UI)

2.Program execution - The system must be able to load a program into
memory and to run that program, end execution, either normally or
abnormally (indicating error)

3.I/O operations - A running program may require I/O, which may involve
a file or an I/O device

4.File-system manipulation - The file system is of particular interest.
Obviously, programs need to read and write files and directories, create
and delete them, search them, list file Information, permission
management.