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• useradd instead of adduser,

  - by Chris at Well

  So I installed Ubuntu 13.04, set up sftp, that's all good. Setting up vsftpd for regular FTP users (we need those too, sadly. sftp isn't for good for all our purposes), i accidently used useradd to create one of the users instead of adduser. This user can't log in to frig all. I tried to delete the user and re-add it with adduser, no dice. It creates the user, but the permissions are frigged up. Any idea how I can completely undo a useradd, so that I can adduser this person and have everything coming up Milhouse again? Sorry boys, I frigged up hard.

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• How can be data oriented programming applied for GUI system?

  - by Miro

  I've just learned basics of Data oriented programming design, but I'm not very familiar with that yet. I've also read Pitfalls of Object Oriented Programming GCAP 09. It seems that data oriented programming is much better idea for games, than OOP. I'm just creating my own GUI system and it's completely OOP. I'm thinking if is data oriented programming design applicable for structured things like GUI. The main problem I see is that every type widget has different data, so I can hardly group them into arrays. Also every type of widget renders differently so I still need to call virtual functions.

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• What would you change about C# if you could?

  - by Casebash

  Assume that your objectives are the same as for C#. I don't want an answer like "I'd write Python instead". I'm only interested in changes in the language itself - not in the standard library. Perhaps this would be interesting to discuss, but as it is shared between many languages it would be better to discuss this in another question instead. Please post a single idea per answer; if you want to post several ideas, post several separate answers. Thanks!

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• GPL/LGPL/MPL non-code content license

  - by user1103142

  I want to use a dictionary (basically a text file, and no code) that is included with an open office spell checking plug-in. The plug-in is under the tri-license GPL/LGPL/MPL which I don't understand. is that legal? If it is illegal, what if I wrote a script that uses the said open office plug-in to generate the dictionary (assuming it's technically possible, the script will generate all possible letter permutations, passes it to the plug-in and saves the correct ones) ? I will be using the dictionary in a closed source commercial application. The dictionary is in a language that has very little resources online, and short of making my own dictionary, there aren't any alternatives. Clarification: The script idea I mentioned above, isn't a weird technique, I would generate a document with all possible words and use open office with the plug-in installed to show spelling mistakes and remove them, isn't this the intended use of the plug-in (spell checking)?

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• Why my domain redirect on Google Apps is returning 404?

  - by Tom Brito

  I have a configuration in the Google Apps Control Panel (dcc.securepaynet.net) to redirect <tombrito.com to <http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4499244H9. It worked fine until some days ago, but now it's returning 404. If you access tombrito.com you can see the favicon in the title of the browser tab, but the page shows a 404 error. The target page <http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4499244H9 is fine, it's only some problem with my redirect. Any idea what's wrong here?

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• About lenguages strongly typed with late binding, do they make sense?

  - by llazzaro

  I never learnt anything about VB6 (and I dont want to) but I wanted to search for bad things in computer software, so my first though was VB6. So for example, VB6 was strongly typed with late binding. Makes some sense to have a language with that combination? (I dont think so). I want to know reasons of why VB6 was like this! or why is good idea for a lenguage to be like this. Bad things that happend with a lengugage like this? good things?

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• MySQL vs. SQL Server GoDaddy, What is the difference between hosted DB and App_Data Db

  - by Nate Gates

  I'm using GoDdady for site hosting, and I'm currently using MySQL, because there are less limits on size,etc. My question is what is the difference between using a hosted GoDaddy Db such as MySQL vs. creating a SQL Server database in the the App_Data folder? My guess is security? Would it be a bad idea to use a SQL ServerDB that's located in the App_Data folder? Additional Well I am able to create a .mdf (SQL Server DB file) in the App_Data folder, but I'm really unsure if should use that or not, If I did use it it would simplify using some of the Microsoft tools. Like I said my guess is that it would be less secure, but I don't really know. I know I have a 10gb, file system limit, so I'm assuming my db would have to share that space.

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• Upgrade 11.10 to 12.04 on Eee PC failed. GLIBC_2.14 not found

  - by user69170

  I was upgrading my Eee PC from 11.10 to 12.04 as prompted and the upgrade locked up (the lappy was plugged into power - so that wasn't the problem). The system won't boot now and I'm getting an error that "GLIBC_2.14 not found". I am unable to boot into any recovery mode or prior version. The lappy was a dual boot, but when I installed Ubuntu the first time, I opted out of that option (whoops). Now I can't load, it goes into a forever 'ubuntu' loading screen. I have a fresh install on a memory stick, but when I set the lappy to boot from it - it doesn't work. Help. I have no idea what to do next... ??

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• Ubuntu 12.04 lts cannot build a wireless connection

  - by Jupiterr

  Hi i just got a new notebook and it came with ubuntu 12.04 lts operation system. But it can't make a wireless connection. I plugged in my Ethernet cable and i can reach the Internet with it but I need wireless connection so much. This is the first time I'm using ubuntu so i'm really confused. I can see wireless networks (including mine) but i cannot use them. It seems like it's establishing a connection but soon it gives up. Please help, I don't have much time for this and I do not have any idea about operation systems.

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• 2D management game [on hold]

  - by Simon Bull

  Very newbie question but I have a game idea in mind. It will be 2d and data centric, like football manager. However I am struggling to find a platform that would suit. I am an experienced line of business developer so am happy to write code, but I would like a platform that does some of the leg work for me so was avoiding OpenGL. I would also like to be able deploy to iOS, android, windows and OS X. What are the options? To be more clear, the game is not a normal platform or shooter type game, so game maker is likely to be way too basic and unity seems a little over the top (though I am not sure if the GUI options would fit?). The majority of the game is more like business screens just displaying data and having buttons to click. Are there options for this type of game (May help to look at football manager)?

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• Turning off XON/XOFF when SSHing via PuTTY

  - by Oddthinking

  I have a fresh install of Ubuntu 9.10 on a rented dedicated server. When I ssh to it using PuTTY (on a Windows machine), I find it responds to Ctrl+S and Ctrl+Q as XON/XOFF transmission control (i.e. the terminal freezes everytime I type Ctrl+S until I type Ctrl + Q). This hasn't been a problem on other remote servers, and I realise I don't really have much idea about how this is determined. Is this something that is negotiated at the start of the terminal session, something that is set by the choice of terminal emulation (TERM=xterm, if that helps) or - as I suspect - some setting on the server I am not aware of. How do I tell Ubuntu that it is 2011, and no-one has terminals that rely on XON/XOFF any more?

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• Distribution upgrade made Ubuntu unusable

  - by Lassi

  I installed today a distribution update from 11.10 to 12.04. This however basically ruined the whole OS. After update I lost all the window borders, icons and even access to the internet. I'm also unable to use the default window manager and I had to use the old gnome. The computer is Acer Aspire 5738G laptop, Intel Pentium T4500, Ati Mobility Radeon HD 560v, 4Gb DDR 3. I am using the open source drivers, not proprietary. Does anyone have any idea what could've happened, and how could I fix this. Help is highly appreciated

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• Clear Linux file system after shutdown / start

  - by user35443

  I have very specific task. I need to clear the desktop, downloads, documents and so on after every shutdown or finish. For example, if anyone downloads something using Google Chrome, he will work with it and then he'll shutdown the computer for next use. And when second user sits for working on the computer, he'll find a clear file system without the data downloaded by the first user. On Windows, I used to work with Returnil Virtual System, but it doesn't have support for Linux. Can anybody tell me if is it possible and, if so, how? I was also thinking of using Wine for this program, but don't think it will be the best idea.

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• GestureListener's fling method doesn't get called

  - by nosferat

  I'm using SimpleGestureDetector from the libgdx-users Wiki as my InputProcessor. I set it in the created() method: Gdx.input.setInputProcess(new SimpleDirectionGestureDetector(charController)); charController is my class which implements the DirectionListener interface defined in the SimpleDirectionGestureDetector class and it is responsible for moving the player character. However the character doesn't change direction when I'm performing a fling action in any direction. I've checked and the fling() method in the SimpleDirectionGesture class doesn't get called and I have no idea why, since everything seems good. What am I doing wrong?

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• Is there any way to discover the traffic of a site I don't control?

  - by George Bailey

  Given the following: The website does not call any external images or scripts, all the content is hosted on a server that is in our control. The website does not contain the meta tag, nor does it contain the html file that would authorize a Google Account access to Webmaster Tools. The access logs have not been provided to any 2nd or 3rd party. Is it possible for a 3rd party to get an idea of how many hits the site is getting, or are they limited to just seeing how high the site ranks? How could the 3rd party determine how well the site is doing under these restrictions? Is there a website for that that you know of?

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• Compiling midnight commander

  - by notabene

  Hello, I need help with compiling midnight commander so that I can make some changes (for educational purposes). Or even creating the make files. After downloading latest version from git. I try to perform ./autogen.sh . Result is: maint/autopoint: 418: cannot open /usr/share/gettext/archive.tar.gz: No such file tar: This does not look like a tar archive tar: Exiting with failure status due to previous errors cvs checkout: cannot find module `archive' - ignored find: `archive': No such file or directory find: `archive': No such file or directory find: `archive': No such file or directory autopoint: *** infrastructure files for version 0.14.3 not found; this is autopoint from GNU gettext-tools 0.17 autopoint: *** Stop. I have installed gettext and folder /usr/share/gettext does exist. But there is no archive.tar.gz. I have no idea what should this archive contain or where to get it. Can you help me please?

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• SSL Certificate

  - by outdoorcat

  I've received the email below from google about my wordpress site and have no idea how to follow the instructions. Any help out there? Dear Webmaster, The host name of your site, https://www.example.com/, does not match any of the "Subject Names" in your SSL certificate, which were: *.wordpress.com wordpress.com This will cause many web browsers to block users from accessing your site, or to display a security warning message when your site is accessed. To correct this problem, please get a new SSL certificate from a Certificate Authority (CA) with a "Subject Name" or "Subject Alternative DNS Names" that matches your host name. Thanks, The Google Web-Crawling Team

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• Should I use nodindex, follow or rel canonical?

  - by webmasters

  I have a site that lists offers, promotions from other websites. Since the offers expire rather quickly I don't save them into my database. I see no point in having a page from 2010 about 30% discount on a certain brand of shoes which isn't availabe anymore. A visitor enters my website; He clicks on the "shoes" category; http://www.mysite.com/shoes/ Here he sees 20 available promotions from different online stores. He clicks on a promotion and gets to a page like this: http://www.mysite.com/shoes/promotions/prada Questions: I use the template promotions.php and list all the promotions. /promotions/prada/ /promotions/otherbrand/ .... What I do is use "noindex, follow" for the links. Is that a good idea? Or should I use rel="canonical" for the promotion page? How do you advise me to handle this from the SEO point of view?

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• Develop an android and iPhone application with shared database

  - by Bongo

  I have a great idea for smartphone application, And I want to develop an application suited for both android and iPhone. In addition I need to use spatial database for geo indexing that will be shared for both applications. I am new to this app world and I have some questions. Is there away to develop for both machines? I know java but not objective c. My guess is that I need to separate the database from the computing to support both applications. What are the best cloud computing providers with spatial database support that can host the server? Do I need 2 hosting servers or there is one server the can support the both of them? which database provider can support geo indexing and support this intergraion, I prefer providers with reasonable free quotas. Thanks.

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• Uninstall Ubuntu

  - by Geordie Dave

  So recently I downloaded the most recent ubuntu iso for installation alongside my Windows 8.1. Everything went really smoothly with no errors or hiccups during installation. The only thing is I've decided that I just wanna go back to using Windows 8.1. I haven't a clue how to uninstall ubuntu now. I was going to use the windows installer but there wasn't one available, however fund this latest iso which provided a much improved installer which as I said made things go a lot better. Has anyone any idea how to uninstall it as I tried the DVD I burnt the iso to and all it gives me the option of is reinstalling ubuntu, there is no option to uninstall once I've installed. Any ideas anyone?

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• Lenovo Thinkpad R500 having problems resuming

  - by Nicolas Raoul

  Yesterday I installed Ubuntu 11.04 from scratch on my Thinkpad R500, leaving the default power management settings. Yesterday I closed the lid, and this morning when I opened it the laptop resumed correctly. Today during lunch the laptop went to sleep without me closing the lid, and there was no way to wake it up by typing ESC or moving the mouse or TrackPoint. No disk activity at all. When I briefly pushed the POWER button, the laptop rebooted completely, losing my opened applications. Is it a known problem with Natty/Lenovo Thinkpad R500/ATI? Any idea what could fix the problem?

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• How to create email request forms and auto-responder?

  - by mfc

  I'm building a site in css and I'm pretty new to any code or script other than html and css. I'm trying to create a landing page that requires an email from visitors and set up an auto responder to send to that newly submitted email. This would also be a signup for email newsletters. I have some idea how to create the form and have looked into a bit. I don't know how to make it a requirement to get past the landing page and into the actual website or set up the auto-responder. Any help would be much appreciated. Or if someone knows of a source that explains how to do this thing in particular it would be wonderful. I tried lynda.com but everything is so general and I can't seem to find info on exactly how to do this but I know its quite common. Thanks!

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• The payment argument is nonsense

  In response to my HTML5 apps argument a few people came back to how the payment thingy is missing from my idea, and how it will (apparently) be worthless because of that. I’ve been thinking about that a lot in the past few days, and I’m increasingly of the opinion that the payment argument is nonsense.Sure, everybody who does iPhone apps, or who’s glancing cursorily at the mobile market without trying to gain in-depth knowledge, currently believes that the App Store concept is going to be a huge...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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• How should I organise classes for a space simulator?

  - by Peteyslatts

  I have pretty much taught myself everything I know about programming, so while I know how to teach myself (books, internet and reading API's), I'm finding that there hasn't been a whole lot in the way of good programming. I am finishing up learning the basics of XNA and I want to create a space simulator to test my knowledge. This isn't a full scale simulator, but just something that covers everything I learned. It's also going to be modular so I can build on it, after I get the basics down. One of the early features I want to implement is AI. And I want to take this into account as I'm designing my classes so I can minimize rewriting code. So my question: How should I design ship classes so that both the player and AI can use them? The only idea I have so far is: Create a ship class that contains stats, models, textures, collision data etc. The player and AI would then have the data for position, rotation, health, etc and would base their status off of the ship stats.

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• I am thinking about developing a game, but i am single developer? [on hold]

  - by Jake Doe

  Since very little i wanted to create a game, my place where my rules apply, where i am not limited. Now that i am capable of doing. I am asking myself should i start ? I have already the idea i have choosen the engine, only coding and artwork is required. The engine i have choose cost is quite high(50k), i can try throught a kickstarter campaign or indiegogo. But shouid I ? Please give me your opinion. Thank you :)

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