The document discusses file concepts, file management, and file attributes. It then discusses single-level, two-level, and tree directory structures. Single-level directories have all files in the same directory and are the simplest structure but have limitations like name collision problems. The document also provides objectives and additional subject materials.

1. File Concept, File Management, File
Attributes
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2. Recap
In the last class, you have learnt
• File access methods
• Directory
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3. • HOME PREVIOUS TOPIC NEXT
• PREVIOUS QUESTION PAPERS FOR OS
• CPP TUTORIALS
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4. Objectives
On completion of this period, you would be able to:
• Understand single level directory structure
• Understand Two level directory structure
• Understand Tree structure directory
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5. SINGLE -LEVEL DIRECTORY
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6. Fig 1 Single- level directory
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7. Features
• Simplest structure
• All files in the same directory
• Easy to support and understand
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8. Limitations
• Name collision problem - files must have unique
names since multiple users share same directory
• Even in case of a single user it is difficult to
remember all file names and create files with
unique names
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9. Other subject materials
• Web designing
• Micro processors
• C++ tutorials
• java
home
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10. Other subject materials
• Web designing
• Micro processors
• C++ tutorials
• java
home
http://raj-os.blogspot.in/