Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

question about unix file system

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers question about unix file system
# 1  
Old 09-08-2011
question about unix file system
Hi,
The file system unix use a multilevel indexes access to disk, 12 direct blocks, 1 single indirect block, 1 double indirect block, 1 triple indirect block:
Assuming a:
block = 512 bytes,
pointer = 4 byte,
and there is a file of 200 blocks,
how many disk access is needed to read the block number 13 with direct disk access?
And how many disk access is needed to read this file sequentially form first block to 150?

I think that is needed 1 disk access to read the block 13 and 150 disk accesses to read the file sequentially.

Is it right?
# 2  
Old 09-08-2011
Do not post classroom or homework problems in the main forums. Homework and coursework questions can only be posted in this forum under special homework rules.

Please review the rules, which you agreed to when you registered, if you have not already done so.

More-than-likely, posting homework in the main forums has resulting in a forum infraction. If you did not post homework, please explain the company you work for and the nature of the problem you are working on.

If you did post homework in the main forums, please review the guidelines for posting homework and repost.

Thank You.

The UNIX and Linux Forums.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Solaris

Basic question regarding root file system copy to another disk

Hello, I am creating a new disk using the following command: dd if=/dev/zero of=/export/home/ramdisk/0 bs=512 count=4096k after creating the disk, i tool a ufsdump of a solaris 10 filesytem (disk size 512MB) ufsdump -cvf /export/home/ufsdump/sol_orig /and then restored the dump files onto... (10 Replies)
Discussion started by: Zam_1234
10 Replies

2. UNIX for Dummies Questions & Answers

Question on Veritas file system..

Hi, I am on Solaris 10 server which is running Veritas. It's E420 server with two drives. I don't know much about Veritas. The other guy who works on this, on vacation this week. :-) Any way, looks like I have hard drive issue on the server. When I do iostat -E. I see this. sd0... (4 Replies)
Discussion started by: samnyc
4 Replies

3. Shell Programming and Scripting

UNIX file system to Linux file system migration

We would be migrating UNIX file system to Linux file system. We do have many directory and sub directories with files. after migrating unix to linux file system , i want to make sure all the files has been copied ? What would be the best approach to validate directory ,sub-directory and file... (1 Reply)
Discussion started by: balajikalai
1 Replies

4. UNIX for Dummies Questions & Answers

Unix directory system calls question

I'm currently studying for my exam, and is practicing with sample exam questions. However there is a question asking "Name THREE UNIX Directory system calls" and the answer given is "opendir, closedir and readdir", however the next question ask "Why is a write directory system call not included... (1 Reply)
Discussion started by: Izzy123
1 Replies

5. Programming

question about empty directories in unix system

how is it possible for a directory to be empty and still have a size greater than 0 in bytes... i made a shell script that shows info about all files/directories and this is what came up the last one is the size, here its showing 1024 in the for loop i did something like for h in * .*; do ... (4 Replies)
Discussion started by: omega666
4 Replies

6. Solaris

File system - question?

Hello, I have few questions about file system in Unix and Linux. 1. What's the difference between Unix and Linux in their file system? Are they the same? 2. Is in Unix directory for administrator "/root" - like in Linux - Ubuntu or not? 3.Where is the users directory in Unix? Is it... (2 Replies)
Discussion started by: niki22
2 Replies

7. Programming

compare XML/flat file with UNIX file system structure

Before i start doing something, I wanted to know whether the approach to compare XML file with UNIX file system structure. I have a pre-configured file(contains a list of paths to executables) and i need to check against the UNIX directory structure. what are the various approches should i use ? I... (6 Replies)
Discussion started by: shafi2all
6 Replies

8. UNIX for Dummies Questions & Answers

solaris File system question ( UFS )

Hello all, I'm ufs file system, how can u use the same disk in another machine with the data in tact? to make it clear, I've an ufs FS in a mount point /file1 ( 8GB). now they decide to reintall the OS. After the reinstall, how can i get the same data as it is? will mounting the disk as /file1... (3 Replies)
Discussion started by: i2admin
3 Replies

9. IP Networking

I have some question on unix system

Dear all, If I login to a Unix system (general user account), will the unix system generate a history file? If positve, will it stored the IP adress also? Thanks and Regards Penny Li ;) (2 Replies)
Discussion started by: PennyLi
2 Replies

10. UNIX for Dummies Questions & Answers

Dummie Question, Can anyone take a screen shot of a UNIX system?

Since i have never seen one of these systems, i am just curious of how it looks. Btw if unix is not a GUI then is it possible to take a screenshots (4 Replies)
Discussion started by: Punk18
4 Replies
Login or Register to Ask a Question