X bytes of 0, Y bytes of random data, Z bytes of 5, T bytes of 1. ??


 
Thread Tools Search this Thread
# 1  
X bytes of 0, Y bytes of random data, Z bytes of 5, T bytes of 1. ??

Hello guys. I really hope someone will help me with this one..


So, I have to write this script who:
- creates a file home/student/vmdisk of 10 mb
- formats that file to ext3
- mounts that partition to /mnt/partition
- creates a file /mnt/partition/data. In this file, there will be:
- X bytes of 0
- Y bytes of random data
- Z bytes of 1
- T bytes of 5
So, totally, the file's size, /mnt/partition/data will be X+Y+Z+T, where X,Y,Z,Y are parameters.

The big problem is with the XZTY bytes. I dont know how to make a file with X bytes of 0, Y bytes of random data, and so on.. Also how can I make a file ext3?
# 2  
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.
 

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Science: Computers
Difficulty: Medium
The open source program Redis is a relational database server.
True or False?

10 More Discussions You Might Find Interesting

1. Programming

Best way to axe N bytes from the right?

say that i have strings that end in "text" foo.9.text, bar.10.text, baz.11.text and i want a C function to chop off the last four characters and replace each string with a '\0'; obviously with error-checking. Any ideas? TIA! (7 Replies)
Discussion started by: Gary Kline
7 Replies

2. What is on Your Mind?

Definition of Bytes

A byte is the smallest unit of storage which can be accessed in a computer's memory- either in RAM or ROM.It also holds exactly 8 bits.But its old view one byte was sufficient to hold one 8 bit character.Modern days especially on .NET or international versions of Win 32, 16 bits is needed. ... (2 Replies)
Discussion started by: stoudtLion
2 Replies

3. Shell Programming and Scripting

Shell script - entered input(1-40 bytes) needs to be converted exactly 40 bytes

hello, suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly. example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly. enter your name: donald duck (this is of 11 bytes) expected is as below - display 11... (3 Replies)
Discussion started by: shravan.300
3 Replies

4. Programming

Copying 1024 bytes data in 3-bytes chunk

Hi, If I want to copy a 1024 byte data stream in to the target location in 3-bytes chunk, I guess I can use the following script. dd bs=1024 count=3 if=/src of=/dest But, I would like to know, how to do it via a C program. I have tried this with memcpy(), that did not help. (3 Replies)
Discussion started by: royalibrahim
3 Replies

5. Shell Programming and Scripting

Error PHP Fatal error: Allowed memory size of 67108864 bytes exhausted(tried to allocate 401 bytes)

While running script I am getting an error like Few lines in data are not being processed. After googling it I came to know that adding such line would give some memory to it ini_set("memory_limit","64M"); my input file size is 1 GB. Is that memory limit is based on RAM we have on... (1 Reply)
Discussion started by: elamurugu
1 Replies

6. Shell Programming and Scripting

Printing bytes

Hi, I have packed fields for which I am trying to print bytes. when I try cut -b2 it does print the 2nd byte besides that it also prints additional byte that I am not aware off:confused: data looks something like this Input: 135 246 when I try cut -b2 it gives me 30 4A but I... (12 Replies)
Discussion started by: ahmedwaseem2000
12 Replies

7. IP Networking

Command to ping 1500 bytes of data to a destination system

Hi All, I want to ping 1500 bytes of data from a pc to another pc in the network. What is command used for the same? Thanks (2 Replies)
Discussion started by: rvan
2 Replies

8. UNIX for Dummies Questions & Answers

Files with zero bytes

Hi All, I want to find zero byte files in the given folder for the given day. I know we can use find . -size 0 -mtime 0 But is there an option for file creation.? ls -lart | grep ' 0 Apr 24' will also work. Also is there any alternative using awk ? I want to know how to use awk in... (1 Reply)
Discussion started by: preethgideon
1 Replies

9. Shell Programming and Scripting

80 bytes per line ???

I am creating ASCII file from Oracle procedure into Unix box. I undertstand there is NO CRLF as I am writing it into one complete string .. but need to know what is best way to format the file with 80bytes per line only before handing over to another program. Thanks in advance regards... (14 Replies)
Discussion started by: u263066
14 Replies

10. Shell Programming and Scripting

Remove first N bytes and last N bytes from a binary file on AIX.

Hi all, Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this? Your help is greatly appreciated!! Best Regards, Naveen. (1 Reply)
Discussion started by: naveendronavall
1 Replies

Featured Tech Videos