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• Why is Lubuntu default desktop environment

  - by John

  So I just wanted to try things out on 14.04, so I did sudo apt-get install lxde sudo apt-get install lubuntu-desktop When I get to the greeter, it reads Lubuntu (Default) Lubuntu Netbook LXDE Openbox Ubuntu Why is Lubuntu default? I don't know if its because its the last thing I installed or if its because it is in alphabetical order. I'm tempted to test this theory by installing Xubuntu and see if it becomes default. I'd like it to read Ubuntu (Default) and have the Ubuntu splash instead. When I open lightdm.conf, there is no line "user-session" nor "greeter-session". They are missing. Is this normal and I have to add it manually?

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• Ubuntu 13.10 not playing DVD videos

  - by John Hill

  I installed Ubuntu Gnome 13.10 on my computer yesterday, and everything seems to be working fine so far, except that it isn't reading video or audio CD's and DVD's. At first, I inserted a DVD video, and it played normally for maybe 30-45 seconds before coming up with a "internal read error" or something like that. I was using the Totem player when the problem occurred, so I tried installing the VLC media player. It wouldn't read the disc at all, so I uninstalled the player. Now, the Totem player won't even begin playing the DVD. The player sometimes doesn't even open up when I insert the DVD, and other times it will but says it can't read it. I've tried several different DVD's and CD's with similar results. The computer is recognizing the optical drive, because when I open "Files", it shows the drive and the disc, but can't play it. Previously, I ran Ubuntu 13.04 with the Gnome desktop installed from the software center, and I had no issues. Any help is appreciated!

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• Buying a custom domain for blogger

  - by John Demetriou

  I am about to move my blogger site to a custom domain. I do all the steps as told but whenever I find the perfect custom domain (that is free) I get redirected to google apps for bussines... Is it a necessity to get Google apps for business before buying a custom domain? If I only start a free trial of Google apps for business when the trial period expires will my custom domain domain still be valid?

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• Why do I always think I know much less than others? [closed]

  - by John Kenedy

  I have been in programming since primary 6. Since the time DOS comes, I have been doing programming in quickbasic 4.5, then to VB 6, then to C#. In between I also do programming in C++. But every time I open Stack Overflow and trying to help others answering their problems, it seems that I know nothing. I feel that I am so stupid even I have been in programming for so long. I would shock reading all the questions and unable to find any clue. Is technology moving too fast that left out me? I feel that technology changes too fast and I can't keep up, when I know ASP.NET web form, MVC is out, when I know MVC, android/iphone/HTML5 app is popular. It seems that I am chasing something and never reach 'it'. I don't know whether this is correct place for me to talk about this. I just wish to listen to opinion like you, how do you think technology should grow instead of recreating language, adding bug here and there to let programmer figure it out, while big company share the solution among themselves. This is exactly how I feel. The simple example is how do you think why doesn't Dictionary<> in .NET provide iterating the object using index? Why must we use Key or GetEnumerator(). Developer has to google and read wasted hour of hour of time to find pieces of hack code to use reflection to achieve reading from index. Where developer will keep it as collection and valuable code. HOwever when times come, everything changes again, developer has to find answer for new silly problems again! Yes, I really hate it! I hate how many big companies are playing with the developer by cutting a big picture into small puzzle and messing it up and asking developer to place it together themselves. As if they are creating problems for us to solve it, so we are unable to grow upfront, we are being manipulated by those silly problems they have created. Another sample would how difficult to collect Cookies from CookieContainer without passing the URL, yes without the URL and I WANT to get all cookie in the cookiecontainer without knowing the URL, I want to iterate all. Why does micros0ft have to limit me from doing that?

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• What grammatical tense should I write my specifications in?

  - by John

  We are currently writing functional and technical specifications in a two column format; summary sentence and technical detail. The details often refer to an appendix with diagrams, layout designs ect. However I am struggling with what tense to write it in: With past tense as if the work is done I struggle to show highlight extensions of exiting work. Future tense as in it needs to do X starts to sound like a to do list or Tense neutral very hard as it has either going to be done or is done. To add further confusion this specification may be read by people who do not have English as a first language.

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• JEOS

  - by john.graves(at)oracle.com

  JEOS stands for Just Enough Operating System.  It is  great environment for building virtual machines without all the clutter of a windowing system, games, office products, etc.  It is from Ubuntu and you install it using the Ubuntu server install, but rather than picking a standard install, press F4 and choose “Install a minimal system.” Note: The “Install a minimal virtual machine” is specific to VMWare and I plan to use VirtualBox. Be sure to include Open SSH in the install so that it installs sshd. *** Also, if you plan to install XE, you’ll need to modify the partitions to have a larger swap space (at least 1.5 G). *** Once the install is done, I find it useful to install a few other items. Update Ubuntu apt-get update Install some other tools apt-get openjdk-6-jre Yes, java will be included in any of the WebLogic installs, but I need this one if I want to do remote display (for config wizards, etc). apt-get gcc Some apps require to rebuild the kernel modules, so you’ll need a basic compiler. Install guest additions (Choose the VirtualBox Devices->Install Guest Additions…” option.  This sets up a /dev/cdrom or /dev/cdrom1.  You’ll need to manually mount this temporarily: sudo mount /dev/cdrom /mnt Then run the linux .bin file. Update nofile limits.  Most java apps fail with the standard ubuntu settings: edit /etc/security/limits.conf and add these lines at the end: *     soft nofile 65535 *     hard nofile 65535 root  soft nofile 65535 root  hard nofile 65535 These numbers are very high and I wouldn’t do this on a production system, but for this environment it is fin. To get rid of the annoying piix error on boot, add the following line to the /etc/modprobe.d/blacklist.conf file blacklist i2c_piix4

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• How to implement smart card authentication with a .NET Fat client?

  - by John Nevermore

  I know very little about smart card authentication in general so please point out or correct me if anything below doesn't make sense. Lets say i have: A Certificate Authority "X"-s smart card (non-exportable private key) Drivers for that smart card written in C A smart card reader CA-s authentication OCSP web service A requirement to implement user authentication in a .NET fat client application via a smart card, that was given out by the CA "X". I tried searching info on the web but no prevail. What would the steps be ? My first thought was: Set up a web service, that would allow saving of (for example) scores of a ping pong game for each user. Each time someone tries to submit a score via the client application, he can only do so by inserting the smart card into the reader. Then the public key is read from the smart card by native c calls through .NET and sent to my custom web service, which in return uses the CA-s authentication OCSP web service to prove the validity of the public key/public certificate (?). If the public key is okay and valid, encrypt a random sequence of bytes with the public key and send it to the client application. If the client application sends back the correctly decrypted random sequence of bytes along with the score of the ping pong game, then the score is saved in the database for the given user. My question is, is this the correct way to do it ? What else should i know about smart card authentication ?

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• Perl script rendered in browser as code through symlink - fine when accessed directly

  - by John Dittmar

  I have a Rails 4 app that has some views that post to Perl cgi scripts. The perl scripts are accessed via a symbolic link to a folder called "cgi-bin". When I navigate to a perl script through the symbolic link they are rendered as text instead of executed (ie: localhost:3000/cgi-bin/test.cgi), however when I access them directly they execute without issue (ie. localhost/path/to/cgi-bin/test.cgi). I am using apache2 on os x. In the directory localhost/path/to/ I have an .htaccess file that contains the following: # General Apache options AddHandler fastcgi-script .fcgi AddHandler cgi-script .cgi Options +FollowSymLinks +ExecCGI I have the exact same lines in the .htaccess file that I have in localhost:3000/ I have also uncommented the AllowOverride all in httpd.conf. The are no errors in apache's error log. When I access the direct link to test.cgi a new line is appended to apache's access log, when I access the script through the symbolic link (and it is rendered as text), there is no line appended to the access log. Any idea why this error occurs? This setup worked fine in a previous version of rails of OS X, but recently I upgraded to Mavericks and figured I should update the Rails application to v4.0 as well.

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• Dual monitor working incorrectly on a Dell XPS 8300 with an AMD Radeon HD 6450

  - by John

  I have been having trouble with Ubuntu on my Dell XPS 8300 (Actual image of the desktop). I have heard that the AMD Radeon HD 6450 has trouble with Ubuntu, and I believe that it is the source of the problem (though I am no expert by any means). When I boot the computer and choose to run Ubuntu, on a rare occasion both monitors (I have an AOC and a Samsung) will display their correct desktops, however most of the time, one of the desktops will be shifted away from its proper position and awkwardly positioned on the screen (showing the login box in the middle/right etc). If anyone has any advice on how to fix this, that would be greatly appreciated.

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• How does Github calculate language percentage in a repo?

  - by John Isaacks

  I have a repo with Ruby and PHP code in it. Github says my repo is 74.8% PHP and 25.2% Ruby I do not understand how this can be. When I compare the 2 languages in my project: # Count how many files: # Ruby ls | grep ".*\.rb" | wc -l # returns 10 #PHP ls | grep ".*\.php" | wc -l # returns 1 # Count how many lines, words, chars: # Ruby cat *.rb | wc # returns 229, 812, 5303 # PHP cat *.php | wc # returns 102, 473, 2760 Ruby always seems to have more. Am I missing something?

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• Flash drive error

  - by John

  when I try to install Ubuntu from flash drive, and when done from CD. I click install and then the screen goes black. Any idea how I can fix this issue? I really would like to know how I'm suppose to fix this. if anyone knows the answer to this please reply ASAP I'm very interested in getting to learn Ubuntu :) I think it would be a fun process and windows 8 is a horrible system in general. Thanks for your time

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• Learning node.js

  - by john smith

  I am not sure if this is the right place to ask but, I thought this was the most suitable. I recently graduated from university. Learned the full php stack; basically all the LAMP stuff, obviously without counting all the other subjects. Not even got my degree and this whole node.js booming out of nowhere. You can imagine how one can feel about this, the story is always the same: you never end learning, and studying. So I recently got my hands on node.js; reading books, tutorials, and everything imaginable on the internet. The problem is one and simple: this is nowhere near to having a teacher standing near you helping you understanding and solving your problems, especially when all you can do is post your doubts on a website and patiently wait for replies. It's not that it isn't good, it's just much slower than what I just expressed above. So, in short words: is there a place where one can find someone willing to teach you about such contents? This would obviously done via remote means, like skype and such. Can anyone here point me into the right direction? Or just downvote me for being in the wrong website? Thanks in advance.

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• Windows 8 Consumer Preview and SkyDrive

  - by John Paul Cook

  SkyDrive integrates very nicely with Windows 8. More on that later. First, let’s discuss using Windows 8 x64 on VirtualBox. Since I wanted to test with x64 and didn’t have a Hyper-V server available, I used VirtualBox. The latest version of VirtualBox does list Windows 8 as a guest operating system choice. The first time I attempted the installation, I chose the experimental Direct3D graphics support. That didn’t work well. After what seemed like FOREVER looking at a completely black screen, I decided...(read more)

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• Surface Pro 3 first impressions

  - by John Paul Cook

  I traded in my Surface 2 (the trade-in program is now over) and bought a Surface Pro 3 with an i7 processor and 8 GB of ram. I greatly prefer the 3 by 2 aspect ratio of the Surface 3. After only one day of ownership, I’ve decided to purchase a docking station. I have a 7 year old desktop with a quad core Q6600 processor overclocked to 3.0 GHz and 8 GB of ram. It has a Plextor 512 MB SSD as the primary drive. It’s a very capable machine, but it does have a little bit, and I do mean only a little bit,...(read more)

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• Browser Game Database structure

  - by John Svensson

  users id username password email userlevel characters id userid level strength exp max_exp map id x y This is what I have so far. I want to be able to implement and put different NPC's on my map location. I am thinking of some npc_entities table, would that be a good approach? And then I would have a npc_list table with details as how much damage, level, etc the NPC is. Give me some ideas with the map, map entities, npc how I can structure it?

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• New free SQL Azure offer

  - by John Paul Cook

  Microsoft has a new and better way to get a free Azure account for a month. All you need to do to sign up is provide your Windows Live Id and register at http://bit.ly/CRAzurePass using promotional code DPCE01 . This is a great way to learn about SQL Azure and improve your skills. You might be interested in downloading the SQL Azure version of the AdventureWorks database from Codeplex ....(read more)

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• Just getting started in Spring and my preference is XML config over annotations. Correct or not?

  - by John Munsch

  After having read through some of the Spring docs my inclination is towards using a XML config file rather than annotations on the classes themselves. My reasoning is that by doing so you avoid tying your POJOs to a particular framework. Based on your experience with Spring, are there any advantages that XML configuration have over an annotation based configuration, and if not what are the disadvantages?

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• How can I allow a user to stream my videos securely?

  - by John Baber

  I've got a script that records 10 minute videos from a webcam to video1.mp4 video2.mp4 video3.mp4 video4.mp4 Then records over video1 again in rotation. I'd like one user to be able to view these in winamp or itunes by having a playlist with the four of them on repeat. (This is my way of getting around the many hours of figuring out how to actually livestream from a webcam with VLC). I don't see any examples of things like icecast being used for video, and I don't see any mentions of secure streaming. My question is, is there any way to have these videos be seen securely? I can do things like https on my server, but I don't have great access to the user's machine, so just sharing a directory by samba or sshfs isn't much of an option.

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• How to run a file with sudo without a password?

  - by John

  I've made a script that preforms various system tasks, that I run regularly, but I have to use sudo to run the script, despite the fact that I own it because it runs root privileged commands. How can I add make sudo let me run this one file without having to enter my password every time I run it? I know that there are questions regarding running commands without a password, but I wasn't able to find one on running a file without a password. I am aware of the security risks, but I'm at home on a computer that I trust.

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• Relationship DAO, Servlet, JSP and POJO [closed]

  - by John Hendrik

  Possible Duplicate: Relationship DAO, Servlet, JSP and POJO I want to implement a JSP, POJO, DAO and Servlet in my J2EE program. However, I don't fully understand how the relationship between these elements should be. Is the following (MVC) setup the right way to do it? Main class creates servlet(controller) Servlet has a DAO defined in its class DAO has a POJO defined in its class Servlet communicates with the view (JSP page) Please give your feedback.

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• Dash brings up 2nd instance of an app

  - by John Rose

  When I select an app from the Launch panel, it returns to the app if already loaded (i.e. shows the app's window with the 'old' situation in it, such as the document last worked on by LibreOffice Writer). However, if I click on the app after clicking the Dash icon in the Launch panel, it always seems to bring up a new instance of the app. Is there a way to make the Dash return to the app as per direct selection of the app from the Launch panel.

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• How to find first cached date and time of a website?

  - by John Sanjay

  I found some of my webpage contents has been copied in other website. I need to check the cache date and time of both pages so that i can compare and guess which page is original and which one is duplicate according to Google. Because i know that if Google found two webpages with same content, it consider the first cached page by Google bot as unique. Is there any online tool for checking that? or other ways?

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• Ubuntu installer thinks my drive is empty, does not see windows paritions.

  - by John

  Hello, I am trying to install Ubuntu10.10 64bit. I just installed Windows 7 64bit moments ago. My drive is currently partitioned like so: 100MB Boot partition (automatically made by windows 7 installer) 390GB Windows partition ~1.6TB free space When I go through the Ubuntu installer it does not give me the option to install alongside another operating system. My only options are to use the entire disk or to specify partitions manually. When I chose to specify partitions manually it tells me that the drive is all free space! Windows is still booting and behaving normally, and I had not doing anything in Windows yet (had simply installed, booted for first time, then immediately restarted). I am even able to mount the windows partition within Ubuntu Live CD, and see it in the disk viewer (not gparted). Gparted in Ubuntu Live CD again reports no partitions, all free space. Not sure what to do :S. I have installed Windows7 alongside Ubuntu countless times, even Ubuntu 10.10. Thank you very much for your help :).

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• Will Apple abandon OpenCL?

  - by John

  I am developing OpenCL applications, amongst others for MacOS. The new Macbook pro 13 inch comes with an Intel HD Graphics 3000 card so it seams reasonable to assume all their mainstream computers like Macbook and Mac mini will also come out with this Intel graphics card soon. OpenCL is not available for Intel graphics cards. Intel having a terrible reputation in developing graphics drivers and Apple knowing this makes me wonder Apple is abandoning OpenCL already again. Especially considering OpenCL should run anywhere, not only on high end systems. Developing applications only for the high end Macs with dedicated graphics hardware or for previous generation hardware with the Geforce 320M would not be a feasible option for me. Does anybody have any thoughts on this?

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• Excel 2013 Data Explorer and GeoFlow make 3-D maps quick and easy

  - by John Paul Cook

  Excel add-ins Data Explorer and GeoFlow work well together, mainly because they just work. Simple, fast, and powerful. I started Excel 2013, used Data Explorer to search for, examine, and then download latitude-longitude data and finally used GeoFlow to plot an interactive 3-D visualization. I didn’t use any fancy Excel commands and the entire process took less than 3 minutes. You can download the GeoFlow preview from here . It can also be used with Office 365. Start by clicking the DATA EXPLORER...(read more)

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