The document discusses various operations that can be performed on a directory in a file system, including searching for a file, creating a new file, deleting a file, listing the contents of a directory, renaming a file, and traversing the file system. It also notes that directories should allow all files and subdirectories to be accessible and that the entire file system should be backed up regularly for reliability.

1. Operations on a Directory
• Search for a file
• Create a file
• Delete a file
• List a directory
• Rename a file
• Traverse the file system
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2. Operations on a directory
1. Search for a file
• Find the entry for a particular file
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3. Operations on a directory
2. Create a file
• Create new file and add to directory
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4. Operations on a directory
3. Delete a file
• Remove a file when no longer needed
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5. Operations on a directory
4. List a directory
• List the files in a directory and the contents of the directory entry for each file
in the list
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6. Operations on a directory
5. Rename a file
• Change name of a file as per user’s request
• Position within the directory may also change
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7. Operations on a directory
6. Traverse the file system
• Every directory and every file within a directory structure
should be accessible
• For reliability, entire file system should be saved at regular
intervals on a backup device
• Magnetic tape is the commonest backup device
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8. Summary
In this class, you have learnt:
- Sequential Access
- Direct Access
- Index file, primary index and
secondary index
Directory
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9. Frequently Asked Questions
1. Explain sequential file access method.
2. Explain direct access method
3. What is an index file
4. Explain file system organization
5. Explain various operations on a directory
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