General :: Block Size Explanation In Plain English?

Apr 8, 2011

what block size means in plain English? I know block size 4k has 2 TB of file size limit and 1024 has around 17 GB. How do they calculate this?

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Ubuntu Installation :: USB Lucid Bug - Work Around In Plain English?

May 30, 2010

I am really not very Linux savy. Have been using Karmic for about a year and wanted to test Lucid NBR on my netbook by running it from a USB stick first. Had loads of problems and bugs with it - However even an idiot like me can work out most of them. However I am suffering from this bug (I think)


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General :: Dd Block Input/output Size?

Mar 8, 2010

I'm trying trying to understand dd, and I'd like to know why frequently do we have to use a block read/write size, like "dd bs=1024", "dd ibs=512"... If it executes the operation byte by byte, isn't it irrelevant? What is this block size then?

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General :: Block Size For Disk Cloning With Diskdump (dd)?

Jan 17, 2011

I use dd in its simplest form to clone a hard drive dd if=INPUT of=OUTPUT However, I read in the manpage that dd knows a blocksize parameter. I was wondering whether there is an optimal value for the blocksize parameter that will speed up the cloning procedure?

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General :: Cannot Mount Ext4 Fs With Block Size Of 65536

Feb 5, 2011

I am doing some benchmarking on EXT4 performance on Compact Flash media. I have created an ext4 fs with block size of 65536. however I cannot mount it on ubuntu-10.10-netbook-i386. (it is already mounting ext4 fs with 4096 bytes of block sizes) According to my readings on ext4 it should allow such big block sized fs. I want to hear your comments.


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General :: Mount An NTFS Drive Which Has A Different Block Size?

Mar 31, 2010

I have reformatted my hard drive with allocation size 64K(formatted on windows with 64k setting) for a better performance on my WDTV HD media player(dealing with large files).When I mount this drive on Linux, the properties tells me that"blksize=4096".If I keep writing files using this default setting(blksize=4096) to my NTFS formatted hard drive, will my WDTV be able to benefit from the performance improvement of 64k allocation size ?I am confused, Does it have anything to do with "blksize=4096". ?Should I try and mount my hard drive with a larger blksize ?I did some research on google but couldn't find an option to increase the blksize when mounting an NTFS pre-formatted drive

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General :: Cannot Mount Hard Disk: Block Count Exceeds Size Of Device

May 11, 2011

I have one hard disk (call her HDA) that contains nothing but a single ext4 partition containing a backup of all my important data. Last night I did a clean install of Ubuntu 10.10 on my primary hard disk (call her HDB) and from there proceeded to upgrade directly to Ubuntu 11.04 upgrade. In 10.10, I was able to read HDA just fine. However after the upgrade, I can no longer mount this drive. When mounting from file browser:


Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sda,missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so The end of dmesg said the following:


dmesg | tail
[ 82.130904] EXT4-fs (sda): bad geometry: block count 122096646 exceeds size of device (122096381 blocks)

my hard disk has a block count greater than the size of my device. I've done my background searching on this and tried a command line utility I've never heard of before:


# sudo e2fsck /dev/sda
e2fsck 1.41.14 (22-Dec-2010)
The filesystem size (according to the superblock) is 122096646 blocks
The physical size of the device is 122096381 blocks


this is as far as I've gotten. This drive holds over a decade's worth of work for me and is extremely valuable. I really didn't think that the Ubuntu upgrade process would mess with this drive, seeing as the Ubuntu install was contained on an entirely different drive. What is it that I need to do to restore my drive to working status?

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General :: Generate Random List And Determine Size Of Arbitrary Block Of Files In Dir?

Mar 4, 2010

I want to generate a temporary random list from a directory of files and then determine the size of an arbitrary block of files from this list (say 1-25 or 26-50) and add their names to a file along with some other info for each name. I can generate a random list with file sizes like this: ls -l | sort -R | cut -d " " -f 6 but i'm not sure how to add up the sizes of just a certain block of these files and at the same time save the file names.

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General :: Explanation For TOP Command?

Jun 2, 2011

I need explanation for top command. If ran the TOP command,on top it shows few options like


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Debian Configuration :: Switch Between English And Japanese Input While Keeping An English Interface

Sep 23, 2010

I am learning japanese and I would like to be able to switch between english and japanese input while keeping an english interface. How would I achieve that? I am using KDE, by the way.

In the Kiten documentation I read that pressing Shift+Space would enable japanese input (built-in in Kiten, according to the documentation). But that does not seem to work in my system.

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Fedora :: Get A Package To Change Keyboard From English To Hangul / Korean And Back To English

Mar 24, 2009

i'm using Fecore Core 8, and i'm wondering how to get a package to change my keyboard from English to Hangul/Korean and back to English.

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General :: Explanation Of Command To Uppercase First Letter Of Filename

Jun 10, 2010

I'm trying to learn to rename files with the command line, and after browsing around a lot of pages I finally found a command that uppercases the first letter of a file, but the problem is that I want to understand the meaning of each command. The command is:
for i in *; do new=`echo "$i" | sed -e 's/^./U&/'`; mv "$i" "$new";done
I understand the 'for' kinda... but not the 'echo' or '`' and especially the sed command.

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Ubuntu :: Offline English-English Dictionary

Apr 3, 2010

Looking for Offline English-English Dictionary for ubuntu.

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Slackware :: Non-English Input Under English Locale

Feb 3, 2010

I'm trying to make Japanese input work with Scim, but when I modify Locale to make it work, all the menu(pulldown menu, title etc.)also becomes Japanese too. Is there anyway to keep English menus/titles while Japanese(or any other language) input method with SCIM is enabled ?

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General :: Calling Gurus And Noobs - Review Filesystem Hierarchy Explanation?

Jun 10, 2010

Back when I was first learning Linux, one of the questions that I kept wondering about was "what are all these files and directories for?" I couldn't find a resource that would explain them in a digestible manner. Specifically, I was looking for one that would allow me to look at a Linux filesystem interactively, collapsing and expanding folders to look at just the ones I was interested in at the moment. So later, when I got the opportunity, I wrote it.

But despite a ton of research, I'm still not totally knowledgeable on the subject. The most important thing I'm looking for right now is for experienced Linux/Unix people to tell me where I got stuff wrong, and for newbies to tell me how useful it is to them and which things need clarification. I'm also interested in technical and graphical ways to improve usability, like better icons, layout, etc. I know I need to be able to collapse long descriptions, but what would you like to see? The Works Cited list and a full introduction are still on the way as of this writing.

Without further ado: Linux Filesystem Hierarchy Explanation. You'll need a fairly recent browser that can handle XSLT; the actual info is stored as XML, and transformed into HTML with an XSLT stylesheet. This is still a work in progress, and I'll be updating it as the thread progresses.

Finally, would people be interested in collaborating with me on this, as an open-source project? I've never done anything like that, and I'm not sure how much time I'll be able to give it in the future, but I really think this should be continued and expanded.

Edit: Works Cited and decent intro are now in place.

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Ubuntu :: Command To Get Block Size?

Mar 1, 2010

In a book, I read tha cmchk command is used to get the disk block size. But in Ubuntu, it is not allowed as command is not available.Can some body tell me what is its equivalent in Ubuntu.

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SUSE :: Change The HD Block Size

Nov 24, 2010

Does anyone have a guide/instructions to change the Block Size on a Linux disk from 4096 bytes to 1mb or more?

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Debian :: Du Command Without 1024 Block Size

Aug 20, 2011

i'm calculating the size of directories using "du"

PHP: function du($path)
exec ('du -sb ' . $path, $res[]);
$size = $res[0][0];


But then again, it doesn't calculate the actual file size, but rather a size aligned to 1024 bytes just as Windows does that with 4096 bytes cluster size. Is there a way to calculate the actual file size? eg. 1021 bytes

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Programming :: C Program - Getting The Raw Size Of A Block Device

Oct 16, 2010

How do you go about getting the raw size of a block device under Linux from within a C program? And I mean the raw size of the block device itself, not a file system that may or may not be installed on it. And I'd like to be able to get the raw size of any block device, from hard drives (e.g., /dev/sda) to LVM partitions (/dev/mapper/vg0-home) to loop devices to anything else that is a Linux block device.

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Ubuntu :: Mounting NTFS Changing The Block Size?

Mar 31, 2010

I have reformatted my hard drive with allocation size 64K for a better performance on my WDTV HD media player(dealing with large files). When I mount this drive on Linux, the mount tells me that "blksize=4096".If I keep writing files usinghis default etting(blksize=4096) to my NTFS formatted hard drive, will my WDTV be able to benefit from the performance improvement of 64k allocation size ? Should I try and mount my hard drive with a larger blksize ?I did some research on google but couldn't find an option to increase the blksize when mounting an NTFS pre-formatted drive.

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Programming :: Provide A Block Size To Open An Archive?

Jul 12, 2011

Here [URL].. it says that you need to provide a block size to open an archive. What does that mean, and what would be a good number to use?

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General :: Explanation Of Here Scripts As Well As The "cat" Command

Aug 13, 2011

I am currently in the very early stages of learning how to use the shell and write scripts (and I mean really early- only been at it for 3 days or so). Now I am following a tutorial, and I have reached a section about the so-called "here scripts" or "here documents".


Now what I don't understand is how those two scripts, once run, produce the same output.. I believe this is because I don't understand the "cat"-command (which is not quite useful, considering it seems to be a very practical and widely used command).

So would anyone care to explain to me what it does in this specific script as well as alternative applications? (And please refrain from just quoting the man-pages.. I have read them multiple times, and I still just don't get it - It's probably very simple,

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Ubuntu :: Wrong Locale \ Go Back To English, The Locale Doesn't Change Back, Only The Menus Are In English?

Mar 5, 2011

I recently installed language packs for Japanese and changed my system language to it, too. The problem is, now that I try to go back to English, the locale doesn't change back, only the menus are in english. "Apply system wide" in the Language Support didn't do anything; Firefox is in japanese too. Here is my locale output:



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General :: Convert Data To Plain Hex From Console?

May 5, 2011

How to easily convert to/from plain machine-readable HEX (without anpaddings/offsets/character view) with xdd or hexdump?I'm tired of digging of some special format strings (and finding out that it suddenly starts wrapping lines after N characters or skip lines) or writing Perl oneliners every time.Why is it not as simple as base64/base64 -d?

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General :: Set English Language

Feb 22, 2010

I have installed Slackware 13 with language support and run it in init 4 mode (GUI, automatically start to KDE). When logout the menu is in arabic or some symbols that I don't understand. I try to set locale to English, but still the same symbols appear.I fix it. How can I delete this thread?

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General :: Cannot Run CGI On Apache - Get The File In It's Plain Text Format

Jan 31, 2011

I'm trying to run a CGI file with Apache2, but when I navigate to it, I just get the file in it's plain text format and not actually parsing the file. What do I need to configure?

I've tried this Code: <Directory /var/www/>
AddHandler cgi-script *.cgi
Options +ExecCGI
</Directory> And I've tried this Code: <Directory /var/www/>
Options Indexes FollowSymLinks Includes ExecCGI
AllowOverride All
Order allow,deny

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General :: Books Or Websites In English

Apr 17, 2011

Please recommend me the best book in English Language and the best website in English Language that teach me Linux step by step.The PDFs of the books are better!!I just want to learn LinuxOS as deeper as I can!!!

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General :: Firefox Plugin For English Learners

Aug 29, 2010

Where to find a plug-in for Firefox that supports the following functions:
- Showing translation of a word by a simple shortcut (like Shift + Right click).
- Allowing to modify list of dictionaries (by giving links to web dictionaries).
- Storing the words into personal vocabulary for later reference.
- Allowing to type in the word for translation.
There is a large list of plug-ins for Firefox that have some of the functionality above, but after quite a long time I wasn't able to find one that satisfies all of the requirements.

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General :: Building A Translation Platform - From English To German

Sep 27, 2010

I have now a second post on the work I am doing. I am trying to complete a model for translating English texts into German. My concept is a model using a text editor with only simple executable scripts being written to perform steps in the process. I need to use a language for doing simple things like tagging words and translating using a dictionary I am building. I am beginning to use AWK in conjunction with Bash and need to find some members with whom I can dialog on particular topics; even getting advice. Are there any AWK users in the community, using the language for processing text?

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General :: No Option Found To Boot Up OS Using English Language

Nov 1, 2010

I have downloaded and ran Austrumi-2.1.6 "Live CD" and although the OS booted up and connected to the Internet easily enough I just can't find the option to make the OS boot up using the English language. I must be missing something but can't figure out what?

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