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• Your favorite LiveCD

  - by sova

  Perhaps this is a question better suited for linux.se but since I have servers on all environments I was wondering what your favorite LiveCD is. Wiki defines this, for those unfamiliar, as a CD or DVD containing a bootable computer operating system. Live CDs are unique in that they have the ability to run a complete, modern operating system on a computer lacking mutable secondary storage, such as a hard disk drive. Live USB flash drives are similar to live CDs, but often have the added functionality of automatically and transparently writing changes back to their bootable medium. I tend to stick with Knoppix, and today I have to register the machine on the network before I can get any of my utilities running via IP. Any suggestions?

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• Implementation of recurring fee system

  - by TPSstar

  I'm developing an application which will list members who have not paid their any previous month's fee and a separate list for those who have paid the fee. So, lets say a member who will be paying fee through out the year, each month and if he didn't pay fee for march 2013 then app should highlight him as un-paid member. What would be best practice to achieve it. Adding fee invoices for whole year already in database when member is added then loop through his payments to check if fee is paid or not, or add a validation date for member on his each payment, for example payment made in Feb 2013 then member is valid till 28.02.2013. Check if date today is 28.02.2013 then he has not paid..

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• Can I use my VirtualBox 3.* VMs with VirtualBox 4.0? If so, how come the repository doesn't have it?

  - by ximbim

  I had the following repository for virtualbox in my /etc/apt/sources.list: deb ttp://download.virtualbox.org/virtualbox/debian maverick non-free Then I found out there was a new version when I opened it today (the program prompted me with a window to manually download it from Oracle's site). Then I tried sudo apt-get update && sudo apt-get upgrade and got nothing. Here you have a way to add virtualbox-4.0 to your apt-get, but the problem is that it isn't updating, meaning I would have the two installed. I'm also worried if I'll have to do something like that each time it updates since that would defeat the point of apt-get. I've been using virtualbox with the apt-get update for more than a year now and this is the first time it has happened, so I was wondering if there would be a way to just update my current installation.

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• How safe is ubuntu?

  - by VJo

  Last week I started desktop sharing using krfb. Since I continue last session, this program keep on starting again. Two days ago I noticed messages poping up saying something like "rejecting uninvited connection from (some ip)", but today I figured it might be because of this and I was right. The krfb was running in the background. Hence the question. How safe is ubuntu? Should I expect someone to connect to my computer and erase everything I got on disk? EDIT To extend my question : how safe it is comparing to other OSs (windows, mac,...)? How safe it is comparing to other distros?

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• Best Graphics card (Setup) for three, high-res monitors attached to desktop

  - by nomrasco

  I have been looking around a little bit, but most of the discussions are about problems with already existing systems (particular graphics card and setup etc.). I would like to ask what would be the best option for me if I want to build powerful desktop with triple monitor setup. I have one Dell UltraSharp U2713HM (27 inches, 2560x1440) and I was thinking about getting two more. Would it be possible to have those three working with ubuntu (kubuntu) on any graphics card out there today? What is the best option if it comes to choosing particular model? Should I use proprietary drivers or some open sourced ones? I am not a gamer. I mostly develop on my machines and running some computational tasks, but I would rather like to spend some more money and have setup where I don't see any lags :) thank You very much in advance! Darek

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• Accidentally deleted my windows 7 while installing ubuntu, trying to reinstall it

  - by user286874

  I had Windows 7 Ultimate on my desktop and I believe have downloaded the correct ISO file. I've been trying to use GParted and UNetbootin to create a bootable usb by formatting to FAT32, flagging the boot box, and writing to the flash drive with UNetbootin, but there have been problems. When I select my flash drive in the BIOS, it just reflashes the BIOS stock MSI picture 4 times then boots to Ubuntu anyway. Details: it's a new computer, self-built, hasn't shown any problems in the past, got Windows 7 through r/softwareswap so it's a MSDN file, the flash drive is a Sandisk U3 Cruzer, I uninstalled the bloatware when Iwas using Windows 7, but in the BIOS it still comes up as "Sandisk U3 Cruzer" I don't have a cCD/DVD drive. I dont care if I have to completely delete ubuntu in the process, I just need Windows 7 back by monday. I think the problem is because of the cruzer and am going to pick up a different flash drive today.

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• LibreOffice can't open a spreadsheet

  - by dn.usenet

  I have been editing my-file.ods almost daily using LibreOffice. Today it hanged at one point. I had to reboot the laptop. Now the file cannot be edited. When it is opened for editing, a warning is issues: Document file is locked for editing by unknown user. If I open the file for editing despite the stated hiccup and edit it and then try to save it, I am prompted to save it under another name. But I don't want to change the name.

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• How can I get my printer working after upgrading to (K)ubuntu 13.10?

  - by Sparhawk

  When using (K)ubuntu 13.04, my network printer worked fine. After upgrading to (K)ubuntu 13.10 today, I can no longer print. I get the error "The printer is not responding." I've tried to add the printer again, and it is automatically recognised. I can add it, and select it from print dialogue boxes, but I get the same error. Brother HL-2040, Kubuntu 13.10 (KDE 4.11.2) ==EDIT== I attempted connecting the printer directly with a USB cable, and this worked fine, so it's not a problem with drivers. (FWIW I'm using the recommended HL-2040 Foomatic/hl1250.) Further, it prints fine over the network from my wife's MacBook.

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• 13.10 login Background without unity

  - by user204477

  I want to change my login screen background (and keep the dots). But I upgraded to cinnamon 2.0 a day ago and then to 13.10 earlier today. I recently became aware of the issue with cinnamon 2.0 and unity on 13.10. This normally would not matter to me since I use cinnamon instead but the only way I know of to change the login screen background is to change unity background. Also all of my backgrounds are jpgs not pngs (in case anyone was gonna say the replace /usr/share/backgrounds/ubuntu-warty.png) and for some reason gimp has issues so converting them is not currently possible for me.

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• Binding to Silverlight ComboBox and Using SelectedValue, SelectedValuePath and DisplayMemberPath

  How do you bind a ComboBox to a collection of objects, and then bind a property from the selected objects to some other scalar property? I received this question today from a friend of mine (a variation of this question). I decided to walk through the scenario here in case anyone else runs into it. This is one of those things that can be confusing it is simple, but it is is much easier shown the explained. This post lays out the scenario and you can download the sample code at the end. When we...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Silverlight 4 released. Availability of tools announcement

  Todays the day! Tuesday at DevConnections in Las Vegas, Scott Guthrie just announced the launch of Silverlight 4. We wanted to take the opportunity at DevConnections to let a large audience of our customers online/offline know that were done and shipped Silverlight 4. As of today its now available for you to download/use. Heres some helpful quick update information for you: Download the bits Understanding what is in the bits RIA Services Windows Phone 7 Developer Tools VS2008...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Oracle OpenWorld Call for Papers is Now Open through April 9th!

  - by Pam Petropoulos

    The OpenWorld 2012 Call for Papers is Now Open!! The most important educational conference of 2012 is fast approaching and you have an opportunity to share your AutoVue success story. Customers or partners interested in presenting during Oracle OpenWorld 2012 should submit a presentation abstract. If your session is selected, Oracle will waive the conference registration fee – saving you anywhere from $1,795 to $2,595. For details about the conference, visit the Oracle OpenWorld website. Don't delay -- submit your presentation abstract today - the Call for Papers closes on Monday, April 9, 2012.   Click here to submit your OpenWorld Presentation Abstract Oracle OpenWorld 2012 takes place in San Francisco, CA from September 30 - October 4, 2012.

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• Is It Possible for My Router to Wear Out?

  - by Jason Fitzpatrick

  Day after day your humble and hard working router holds your home network together and links it to the greater internet. Is it possible to work it to death? Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. HTG Explains: How Antivirus Software Works HTG Explains: Why Deleted Files Can Be Recovered and How You Can Prevent It HTG Explains: What Are the Sys Rq, Scroll Lock, and Pause/Break Keys on My Keyboard?

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• SQL Server Data Type Precedence

  I am executing a simple query/stored procedure from my application against a large table and it's taking a long time to execute. The column I'm using in my WHERE clause is indexed and it's very selective. The search column is not wrapped in a function so that's not the issue. What could be going wrong? Schedule Azure backupsRed Gate’s Cloud Services makes it simple to create and schedule backups of your SQL Azure databases to Azure blob storage or Amazon S3. Try it for free today.

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• Unneeded RAID recovery

  - by Shinhan

  I have two software RAID 5s. Today when I turned on my server (after it was off for two weeks when I was on vacation), I got the message that the software RAID is degraded and was offered RAID recovery console or boot degraded. No idea what to do in that recovery console btw, so I just exited it. After the boot finished normally I took a peak at /proc/mdstat but there is nothing amiss there. So I took a look at mdadm --detail /dev/md0 (and md1) and again everything looks fine with Failed Devices being 0 both times. Next I took a look at smartctl --alll /dev/sdX for all of the drives and Reallocated_Sector_Ct is 0. (Lots of other zeros, all numbers look to me fine) Anybody have any ideas why I'm getting the RAID recovery message on boot when nothing seems bad?

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• WAV and MP3 Streaming with ASP.Net and C#

  In this programming tutorial you will learn how to stream WAV and MP3 audio files in ASP.NET 3.5 using the C# server side language. This is particularly useful for music websites that are based on the ASP.NET 3.5 platform. The examples used in this article are tested to work on any major browser including Internet Explorer Chrome and Firefox. The scripts are tested on a Windows XP operating system using Visual Web Developer Express. For convenience an actual working example can be downloaded at the end of this tutorial. Finally this tutorial also highlights the use of the Google Flash player when streaming MP3s.... Autodesk? Inventor? Test Drive Autodesk? Inventor?. Download A Free 30-Day Trial Today.

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• Print out the amount of times 2 words appear in the syslog. But also have it tell me how many times for each hour

  - by wolfspinone

  So I'm trying to create a bash script that looks for two words in my syslog file. Then I want the script to print out how many times those two words have appeared. Also I want it to print it out for every hour of the day. So like if the word dog appeared 4 times during the first hour of today, it says Hour one, dog 4. Finally at the end of the script I want it to print out how many times those words appeared all day. The sudo code I have thus far is if 2 > hour find permit find block print both finish if 1 < hour < 2 find permit find block print both finish if 2 < hour < 3 find permit find block print both finish command is grep -o "\WORD\" Syslog.txt * | sort | uniq -c

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• How to handle situation of programmer stealing credit for your project [on hold]

  - by shorecc

  There is a coworker who has stolen credit for my work. I created a system that will show live statuses of printing machines throughout the plant. There was one glitch in it so the coworker made an improvement and then re-wrote the entire system (copying 90% of my code, yet he added a new piece of hardware then took over the project). Now he asks me programming questions from time to time. I don't mind teaching coworkers how to program, but since he has stolen my ideas and credit in the past I am reluctant to teach him all I know. Today he asks me for a particularly challenging algorithm for this system. His code now looks exactly like the way I would program! How would you handle the situation? How can I decline helping him without appearing to not being a team player?

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• After upgrading to 12.04 lts server, the mouse is intermittently working

  - by Jason

  After this upgrade, I've had a problem with the mouse intermittently working and programs crashing (like zentyal crashing and the error reporting application crashing) I also had an error on the screen that said: "Could not grab your mouse. A malisious client may be eavesdropping on your session or you may have just clicked a menu or some application just decided to get focus. Try again." What's going on with this system? Did I really get malware that quickly? This system has been boxed up since 2011. I only did the upgrade today... In regards to the mouse I can move it around, but when I click on something, it doesn't work.

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• MonoDevelop 2.4 released

  Today we are releasing MonoDevelop 2.4, which includes plenty of new features and improvements. The release highlights are: Workbench usability improvements, which include a new Navigate to Symbol dialog, Solution and Class pad zooming, better pad layout, and many other look & feel improvements. Improvements in project management, with support for standalone assembly projects, and external console support for Windows and Mac. Extensive text editor improvements, including in-line search,...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Windows 7 doesnt reboot as a dual boot

  - by user94628

  I've recently installed Ubuntu12.04 on my HP Pavillion desktop which came preloaded with Windows 7 (64bit). Since today when I try to boot WIn7 I get a screen firstly saying loading files then it goes to the next screen which tries but fails to fix errors. I've also tried system restore which has also failed. When I run boot repair it says it has been successful and to try and reboot. When I reboot I still get the same error. Please see this file: http://paste.ubuntu.com/1261148/ Please help

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• Fix Uninstall Issues with Visual Studio Versions

  Have you ever installed a BETA or CTP or an RC build of some Microsoft product such as Visual Studio, and then been faced with the unhappy situation that it could not find the installation sources when you attempted to uninstall the product, or it just didnt uninstall cleanly leaving traces of Registry entries that prevented you from installing a later version?Its certainly happened to me several times. But today I ran into a program called Perfect Uninstaller that, for $35, turned out to be one...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Cancelling WPF Application.Shutdown

  - by MarkPearl

  Today I spent the better part of an hour trying to figure out what I had had done wrong. I had an application that when the user click’s “exit”, it should prompt if they want to save the last unsaved file, or cancel the exit. If the select cancel it should not exit the application. Everything seemed fine in my code, all I was doing was calling Application.Current.Shutdown(); And then capturing the Closing event and setting cancel to true.. (see SO question here) Long story short, If should not have been calling Application.Current.Shutdown() but rather Application.Current.MainWindow.Close(). grrrr… <I must read documentation properly>

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• Ubuntu freezes while working

  - by webid4me

  Ubuntu on my laptop has frozen multiple times in last 6-7 months. Its not frequent but I can not relate the freezing to anything which I was doing. Today it froze again when I was taking notes in class - approximately at 12:00 PM. During the freeze both mouse and keyboard stopped working. I tried Alt-Ctrl-F1, Alt-Ctrl-F2 etc without any success. After that I waited few minutes & then I restarted the laptop. I checked /var/log/syslog and /var/log/kern.log and it seems that it did not log anything (I was not able to understand most of it). Please let me know if you can find something unusual at around 12:00 PM. Is there any other log which might be useful? Here are the /var/log/syslog and /var/log/kern.log files.

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• Ubuntu 12.4 not listed while in boot menu

  - by radkrish

  I am using Dell Inspiron 17R with Windows7 as the primary OS to boot my system up. I am new to Linux and to begin with, I thought of installing Ubuntu 12.4 AMD 64 bit version on my laptop. Today I performed a successful installation on my laptop but when I reboot, it doesn't show me the Ubuntu OS in the list (I can only see Windows7). Is there any way to bring up the Ubuntu entry into this list? While installing I selected the option to have both Windows7 and Ubuntu OS on my laptop. The root drive for both OS is C: drive. Hence I split the drive into two (250 GB for Windows7 and 250 GB for Ubuntu). Now I can only see 250GB in my C:\ drive for Windows7. Is the remaining 250GB assigned to Ubuntu or did I lose that 250GB space?? Your answers will be highly appreciated..

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