Ubuntu :: Bin Ash Shell - Creates A File With Name Of The Value $available_blocks Instead Of Using The '>' Sign For Comparing The 2 Numbers

Feb 23, 2011

Im using an if statement in the bin ash shell and it isnt working.

Code: if (( 5000 > $available_blocks )) then echo "WARNING Disk space low, "$pct_used" is used" fi

I don't think its a problem with the if. When i use that code it creates a file with name of the value $available_blocks instead of using the '>' sign for comparing the 2 numbers.

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CentOS 5 :: Partition Editor Creates Bad Partition Numbers In Text Install

Mar 3, 2009

Trying to install Centos 5.2.i386 from DVD in text install (I'm assuming I need to do text install as I'm setting up raid arrays)

I have 4x150Gb raptors where I want the following layout:

/dev/sda1 100Mb (for /boot in raid 1, 4 disks)
/dev/sda2 1000Mb (for swap, raid 0, 4 disks)
/dev/sda3 4000Mb (for /, raid 5, 4 disks)


In the last attempt I did, sdb,sdc and sdd all had the correct ordering of partitions, but sda looked like above, which means I would need to assemble by boot array partition array as /dev/md0 = /dev/sda3, /dev/sdb1, dev/sdc1, dev/sdd1

Why is the partition numbering moving around as I create them?

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Ubuntu :: Comparing Multiple Files In Shell Script?

Jun 13, 2010

I've got an interesting challenge for the shell scripting wizards here. I've got a mySQL dump of three files for my amarok database with the intention of copying some files to my media server (cover art) so that I can keep the server the server and not rely on my local machine.

Step 1: Identify any cover art files on my local machine.

I did this with:

mysql -u amarok -p amarok -e "SELECT * FROM images WHERE path like '%.kde%'" > cover_art.txt
Output looks like this:


What I have here now is the ENTIRE album list in my collection -- and something to compare the IDs in Step 1 against. I'm going to stop here and will update the thread as I get past this stumbling block. "ID" in cover_art.txt = "image" in albums.txt... straightforward enough, right?

So the question is this: how do I create a simple shell script that will loop through the IDs in cover_art.txt (i.e. characters 0 -> 4 -- it will always be a 4 digit ID) and then search for that ID in the Albums.txt file.

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Ubuntu :: Shell Terminal - Dollar Sign Missing?

Apr 14, 2011

I am trying to use Ubuntu terminal to execute unix commands. However, the dollar sign that usually appears in shell terminal is missing. Please see the attached screenshot image showing the terminal without the dollar sign. I cannot run any unix commands like cd, ls-l. Please advise how I could fix this problem.

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Programming :: Bash File Comparing - Report How Many Matching Words My Main File ?

Jun 9, 2009

I have been messing with diff and grep for 2 days now without result

I am trying to match a file consisting of words to many separate other wordfiles in a specific directory. one by one.

What i want the script to do is to report how many matching words my main file has with every file in the directory, each in turn


Each of em are plain text files with 1 word per line

Output should be something like:


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Ubuntu :: Keys Are Not Working - When Want An @ Sign Cant Make That Sign - Keybaord Layout Has Been Changed

Mar 23, 2010

I have a problem my ubuntu is the latest distro but the shiftkeys are not working like when i whant an @ sign i cant make that sign the keybaord layout has been changed i even have done most of the solutions found on the site and no use.

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Ubuntu :: When Ever Try To Sign In To Messaging System It Gives This Message And Wont Let Sign In?

Feb 20, 2010

when ever i try to sign in to my messaging system it gives me this message and wont let me sign in,< Received unexpected response from [URL] useTLS=1 is not allowed for non secure requests.>

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Ubuntu :: Cli Comparing File Names Recursively?

Apr 24, 2011

I would like to use the command line to compare two directories against each other. I have two folders called music collection that have evolved over the last year on two separate computers. 90% of the two folders are the same, but there are small differences. I would like a solution that will print out all the differences so I can analyze them and choose what I want to do with them, before merging the two folders. for example.I would like some kind of output that shows the differences and where its located.

comparing MusicCollection1 and MusicCollection2
dif1.mp3 located in MC1/folder1 (this one I might want to keep and merge over)
dif2.mp3 located in MC2/folder3 (while this one I might realize does not exist in both folders because I deleted it for a reason)

I've looked at sort, uniq, and even tried scripting my own solution, but haven't come up with an elegant solution thus far. Its important that it is recursive because there are about 15 folders in Music collection and more folders under those 15.

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General :: Comparing A File Size To A Given Number?

Jul 26, 2011

I'm trying to write a script that takes two arguments, the first argument is a number, and the second argument is a filename. The shell script should indicate if the file's size is BIGGER or SMALLER the number provided. this is what i have sofar, am i on the write track, i'm hoping its just a problem with my if command

if [ $1 -h $2 ]
echo "$1 is bigger than $2"


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Server :: Comparing Zone File Counting And Same Name

Mar 29, 2011

I want to compare zone file counting and same name, not records etc of master and slave dns server so that i sure both server contains same copy of the files at a time. Any utility to compare such files in linux?

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Programming :: Comparing And Formatting The Text File

Oct 11, 2010

I need a script which can format the below text file which contains comments



Output should be:



Script should compare the column name and paste the output in above said manner.

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Ubuntu :: PCMan File Manager File/folder Numbers In Wrong Order?

Jul 25, 2011

I have recently switched to using LXDE on my PC and I am on the whole pretty pleased with it. However,PCMan is giving me a really odd problem. Some of the files/folders are being displayed in the wrong order where they contain numbers. They are being ordered by their first digit not the whole number.


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General :: Comparing Two Files - Display The User Names That Are In The First File And Not The Second

Sep 17, 2009

Im trying to compare two files and I only want to display the user names that are in the first file and not the second.

So I have one file named final.txt (which contains every user name and only the user names in a list no other information)

Then I have another file Over1.txt (which only contains certain users that have different permissions This file is also setup differently with the user name and some information about the user after the user name.

I need a way to compare final.txt to over1.txt so that I will only display the names that are in final.txt but not Over1.txt

Ive tried using diff and comm but just cant seem to get it two work correctly. Im not sure if im missing a option or what.

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Fedora Servers :: Incremental Tar Creates Wrong File?

Sep 6, 2010

set up incremental backups with crontab. I just discovered that tar is not actually incrementing the tar files. I first created the tar files, then in crontab I have:

cd /; tar -cpf --incremental --exclude-from=/root/ExcludeFromTar.txt mnt/PATRIOT/bkp/home.tar home

I only just discovered that this creates a file whose filename is "/--incremental". I also tried using tar's -G switch instead of --incremental:


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General :: Cron - Mysqldump Job Creates An Empty Sql File

Apr 14, 2010

My cron job is executing the below mysqldump command but it produces an empty sql file. However, when I run from the command line, it works as expected.

15 6 * * * root mysqldump -uroot -pXXXXXXX mydbname | gzip > /home/dbbackup/db_`/bin/date +\%Y\%m\%d\%H\%M`.sql.gz

I'm on CentOS 5.4 and use "env EDITOR=nano crontab -e" edit my cron (then paste the above command.

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OpenSUSE Network :: YaST Creates Only 1 File For Many Virtual Hosts?

Jun 8, 2010

When I converted to OpenSUSE 11.2, and went through YaST HTTP Server Configuration, creating my virtual hosts under the Hosts tab, YaST combinedm all int ile,"/etc/apache2/vhosts.d/ip-based_vhosts.conf".I did google and read, [URL]for further assistance.I'd like each virtual host to have its own file under vhosts.d, and wondering why YaST did not do that.The file /etc/apache2/httpd.conf laid out the file structure, and all vhosts.d/*.conf files are included.Is there a way to tell YaST to create separate files for each vhost, or does the user have to manually do it?

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General :: Creating A Hard Link Using Ln Creates A Copy Of File?

Mar 11, 2010

I am trying to use ln to create a hard link to file a and whenever I do it, it creates a copy of the file instead. After having edited file a, when opening the link, it shows the old information and opening file a shows the new information. The command I am using is


ln /home/user/file

within the new directory i am trying to link from. I am using centos 5.4.

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General :: What Does The Double Less Than Sign (<<) Means In Creating A New File With Cat

Aug 25, 2010

I saw an article use the following cat command to create a new text file:$ cat > first.sh << ENDAnd then after press the 'return' buttion, a '>' sign appeared expecting you to input the content. If I type 'END' then the 'return' button, then a new text file is created with what I just typed...I'd like to know what's the differnece in just type:$ cat > first.shwithout the '<<' sign?What '<<' really means? I cannot find it's meaning anywere... seems it's not in the redirection section.

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Ubuntu :: Find Those File Does Not Start With Numbers?

Jan 4, 2011

this command show that files that start with numbers

ll [0-9]*

how can i find those file does not start with numbers?? (files can started by every character except / (slash))

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Ubuntu :: Script Or Program To Export Numbers Into A .txt File?

Apr 19, 2011

I am working on a project but it consist of a large amount of numbers. I have tried using OpenOffice to produce this list of numbers but it keeps crashing when I reach a certain point. So I was looking for some help. I need to see if someone could either help me with using a script or program to export these numbers into a .txt file or if someone could just make the list for me.

I am looking for a text file that will have the numbers 1000000000 to 9999999999 in order. I understand this is a large amount of numbers but this something I don't have the time to just do manually and each time I try to do it with OpenOffice it crashes around 1009000001. Oh and I need the text file to look like this:


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Programming :: Extract 2 Numbers From A Same File?

Dec 22, 2010

I am trying to extract 2 numbers from a same file and my goal is to print them both in another file, on the same line, separated with a space. I have to do that for 20 files and I would like to have therefore 20 lines like this in the output file. It would look like this :


number1_file1 number2_file1
number1_file2 number2_file2
number_1_file20 number2_file20

So far, I did only extract one number and got an output file like this :



And I did this by running a bash script with the following content :


ls execution$1$2*.* | while read filename
cat $filename | grep -e "Total aborts:" | cut -d " " -f3 >> abort$1$2.dat

$1 and $2 are just strings to identify the different files I want to consider in this loop. This script works well to extract a number which is the 3rd field of a line starting with "Total aborts:".Now, how could I change this script to do what I mentioned above (i.e. extracting two numbers from two different lines) ? The second number is the 3rd field of a line starting with "Total throughput:"

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Ubuntu :: Remove All The Numbers And Dash That Precedes The File Names

Nov 28, 2010

I have thousands files in which there are numbers and a dash followed by file name (which are different from each other), but have the same suffix. I would like to remove all the numbers and dash that precedes the file names.

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Ubuntu :: Hidden Directory 'RECYCLER' Creates .exe File In Directory Called 0x2D9FA278

May 30, 2011

I've done a low level format on them so they're completely empty. When I use them with my windows machines, they're absolutely fine. When I plug them into my Ubuntu machine, there is a hidden directory created called 'RECYCLER' which I'm assuming is for deleted files?However, it also creates a .exe file in this directory called 0x2D9FA278 which has an Icon with an H in it and a comment of 'Facebook Photo' This has the effect of making all the directories on the stick into shortcuts! I googled the file name and it seems to be some sort of Trojan, but I don't understand how it's go into my Ubuntu machine, I've scanned with ClamAV and it finds nothing.

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Debian :: Use Screen To Execute A File With A Certain Session Name Instead Of Just Numbers?

Feb 11, 2011

I'd like to use screen to execute a file with a certain session name instead of just numbers... or at least have a more permanent name, I'd like to be able to use it all in one command though. So I can put it into a script.Also: is there a way I can remove or change what comes up at the debian login screen so instead of debain 5.0 I can make it say something else? Also when I login the message that comes up is a little annoying, is there a way I could remove or change that too?

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General :: DU Style Directory Listing With File Numbers

Sep 6, 2010

Is there a command to return a recursive listing of sub-directories and the number of files in them? I have found plenty of ways to give me the total number of files in a directory structure, but none that gives a list of the sub-directories with the number of files in them. "du" gives me a listing of directories with their sizes, but I couldn't find an option (or any other way) to give me the number of files as well. Ideally, I'd like to get list with "Size" "Files" "Dir name" - And the order of the columns doesn't matter. Is there a "simple" command line solution or do I need a shell script for that?

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General :: Replace Sequential Numbers In A File With A Different Sequence Using Sed?

Apr 11, 2010

I am trying to find a way to replace a set of sequential numbers in a file with a different sequence using sed. This might be done easier using awk or some sort of bash script, but it seems to me there must be a way to do this easily with sed. Basically, what I am editing is a Cisco switch config. I want to change the sequence of ports to a different numbered sequence. Here is an example of what I am trying to do.I want to change for example, the file:

cat testfile
interface FastEthernet0/1


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Programming :: Read A File That Counts Each Line And Numbers

May 13, 2010

I ran into it while google Segmentation Fault. I'm writing a simple C program that reads a file that counts each line and numbers it then writes to a file called sdout. I copyed my program mostly from the text book but im still having problems. Heres my code:

#include <stdio.h>
#include <stdlib.h>
void new_line(FILE *, FILE *);
int main(char *argv)


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Ubuntu :: Drag File/Folder To Taskbar Button Creates Launcher, Not Bring Folder To Foreground?

May 20, 2011

After upgrading to 11.04, I noticed something strange, being that when I want to drag a file or folder from one Nautilus folder window to another which is not visible, I can no longer hold the item over said folder's taskbar button and wait for it to appear. It just shows the + for copy, and when I let go (which I have no choice but to eventually do), it creates a launcher to that item (I assume it's doing that, and not actually copying there, but the + has me unsure).

I've looked in Nautilus's preferences to see if this is some new behaviour that I can revert back to, but could find nothing there.

I'm of course using the Classic desktop with bottom panel being the taskbar. If you know how I can rectify this, please let me know, as the times I would want to create a file or folder launcher without the usual hassle would be rare, but I am constantly dragging stuff from one folder to another, and it would be a real pain to have to line up source and destination folders each time.

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Programming :: Create Inverted Files To Associate Files To Numbers ( Numbers Being The Index Of My Paths )?

Apr 4, 2011

am writing a small search program for my class. I have decided to use indexing for my program. Ive researched online about indexing and how search engines do it. If im gonno do that I need to create inverted files to associate files to numbers ( numbers being the index of my paths ) . Now I was wondering what would be the best way to create an inverted file ? I was going to create sql tables using mysql api in C but then again there is no array data type or vectors to store few numbers in a single column in mysql and it is not advised to use Enum or SET

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General :: Reading Numbers From Text File And Storing In Array?

May 26, 2010

I'm writing a bash script where I read a text file (containing a column of numbers) and store each line in an array. There seem to be some problems with the whole thing however, but only for some files and not others. Here's what I do:

file=time_notOk.txt ### The file with a column of numbers
i=0 ### Array counter
### Read the file


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