Abstraction used by the kernel to represent and organize the system’s storage resources
Ability to create and delete files
Dynamic growth of files
Protection of file data
Treatment of peripheral devices as files
UNIT I GENERAL OVERVIEW OF THE SYSTEM History − System structure − User perspective − Operating system services − Assumptions about hardware − Introduction to the kernel − Architecture of the UNIX operating system − Introduction to system concepts − Kernel data structures – System administration − Summary and preview.....