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• How do operating systems… run… without having an OS to run in?

  - by Plazmotech Binary

  I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a Unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work?

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• How can I get Kindle for PC to work in Ubuntu using Wine?

  - by codeLes

  I've 'installed' Kindle using Wine but it doesn't work. The menu item is there but nothing seems to happen when I click it. I have set the application settings in Wine config to run Kindle as Windows 98 as I've seen suggested... still no luck. Any experience with this? EDIT I don't have a kindle, but I use kindle for android. I was wanting to be able to read my books on my pc without having to use windows.

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• Microsoft publie le Live SDK pour Windows 8, pour la création d'applications Metro utilisant ses plateformes Cloud et collaboratifs

  Microsoft publie le Live SDK pour Windows 8 pour la création d'applications Metro utilisant ses plateformes Cloud et collaboratives Microsoft vient de publier le kit de développement Live SDK, permettant de créer facilement des applications Windows 8 de style Metro, connectées aux plateformes de Cloud de la société. Le SDK fournit un ensemble de contrôles et API permettant d'intégrer une authentification centralisée (SSO) avec les comptes Microsoft et Access Info pour SkyDrive, Hotmail, Messenger sur la Consumer Preview de Windows 8. Disponible actuellement en Developer Preview, le SDK fonctionne avec Visual Studio 11 beta. Pour une première application, il est important ...

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• Google I/O 2010 - Make your app real-time with PubSubHubbub

  Google I/O 2010 - Make your app real-time with PubSubHubbub Google I/O 2010 - Make your application real-time with PubSubHubbub Social Web 201 Brett Slatkin This session will go over how to add support for the PubSubHubbub protocol to your website. You'll learn how to turn Atom and RSS feeds into real-time streams. We'll go over how to consume real-time data streams and how to make your website reactive to what's happening on the web right now. For all I/O 2010 sessions, please go to code.google.com From: GoogleDevelopers Views: 5 0 ratings Time: 55:46 More in Science & Technology

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• Using NPM to share resources between UI projects [on hold]

  - by guy mograbi

  I am a UI team leader. My team has a lot of projects using different languages/technologies. In some parts we will rewrite (gradually - @Ampt this is for you) the application in order to enable new fresh technologies in and get old dinosaurs out. I am going to use Node Package Manager to set up an "all powerful" build/dependency manager. Can I use NPM to depend on a private github repository? Can I use NPM to depend on SVN? Will NPM play nice with quickbuild? Since each project might have a slightly different structure (think jetty/maven or play!framework) can I configure NPM to install some dependencies in different folders while still running it from the project's root? How can I, using NPM, get development resources out and build a packaged product? (like a war) Yes/No - is there a reason to use grunt? No discussion, just one liners.

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• Black frame around screen after HDMI connection failure

  - by Wolter Hellmund

  I was trying to watch a movie in my computer through the TV, so I connected both with an HDMI cable. I was unable to have a successful setup (the colors were all weird on the TV and the screen size, incorrect), I tried many resolutions using the nvidia-settings application and somehow my screen got framed by a black border and after that I have been unable to remove it, even after restarting the computer and not being connected to the HDMI cable anymore. I am using Ubuntu 11.10 amd64, my GPU is an nVidia GeForce 8600M GT and I am using the propietary driver version 280. The problem is due to some setting with my account only. I logged in to the guest session and the resolution is right there. Also, my desktop "thinks" the resolution is right (i.e. 1280x800), but it must be right in another scale because there is pixel area occupied by the black frame.

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• Enable permanent vertical and horizontal scroll bars

  - by Rolen Koh

  I am facing a problem and it is in Ubuntu (14.04) permanent scroll bar is not there but it appears when you move the mouse pointer to right most side or bottom most side. But it is very difficult to use and lately it takes too much to appear and sometimes it doesn't appear at all and so i have to close the application and reopen it. So i want to ask how to enable permanent scroll bars on right side and bottom most side. I am sure many people must have faced this problem before me. Thanks. P.S: By permanent i mean scroll bars should be visible all the time.

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• Windows Phone 8, l'essentiel des nouveautés de la preview : IE 10, Nokia Maps, NFC, UI personnalisable et usages professionnels

  Windows Phone 8 : l'essentiel des nouveautés Du prochain OS mobile de Microsoft Windows Phone 8 a été dévoilé pour la première fois hier soir sur la scène du Windows Phone Summit de San Francisco. Son rapprochement avec Windows 8 ? à demi-attendu ? a de nombreuses conséquences pour les développeurs. Il en a aussi pour les utilisateurs et les professionnels. Tout d'abord, Windows Phone 8 prendra en charge trois résolutions d'écran (sans aucun travail supplémentaire pour les développeurs ayant déjà créé une application, précise Microsoft). « Deux nouvelles résolutions ? 1280x768 et 1280x720, ouvrant l...

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• Display large amount of data to client through pagination

  - by ebram tharwat

  I have a web application in which i need to show a big number of data or records for clients. Now i 'll use pagination but i was wondering should I: Load all the data once then pagination, sorting and sarching 'll be easy..But it 'll takes big time(using local DB it takes up to 9 sec.) Or each time i show new page(from the pagination) i make a new request to server and then new request to DB to get the next records..But then what if the client click on Prev button, i 'll make a new request to get data that I had previously..Should i cach data that are loaded before and how if that's good technique? So load all data once or make a new request every time i need data that maybe have been loaded before. I'm using ASP.NET MVC SPA with durandaljs and knockoutjs

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• Game Changing Features in the Silverlight 5 Beta (Part 3)

  - by mbcrump

  Introduction In the second part of my “Game-changing Features” series, I investigated how to create multiple windows in a trusted Silverlight 5 application. Now, it is time to explore another set of features: SoundEffect Class for Low-Latency, Supporting Double- and Triple-Mouse Clicks and Linked Text Containers.  If you followed my previous tutorial, then you should be ready to get started. The full source code for all three of the projects will be available as a separate download with this article. The full article is hosted on SSWUG and you can access it by clicking here. Don’t forget to rate it and leave comments if you have any problems. Other Resources by Me: My webinar on “Getting started with the Silverlight 5 Beta”. Getting Started with the Silverlight 5 Beta! Game Changing Features in the Silverlight 5 Beta (Part 1) Game Changing Features in the Silverlight 5 Beta (Part 2) Game Changing Features in the Silverlight 5 Beta (Part 3)  Subscribe to my feed

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• Can I run alsa and pulse side by side ? I think there is some problem with the alsa ! My ubunu login sound and alert sound are not working?

  - by Curious Apprentice

  I think I have Alsa driver installed. Pulse not working may be I dont have it installed. Not sure If I can run Pulse and Alsa. I had to configure each application prior to work which use pulse.(SMplayer by default select pulse. I had to change that) I know a little about these. So if the question is stupid then please help me. Smplayer always showing a cross(x) icon in front of speaker icon as it is disabled, though Im playing sound.

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• What is the Ubuntu equivalent of the Windows programs Belarc or PC Wizard?

  - by CeltaWeb

  I provide technical support for several high schools in Spain and I have been building up a inventory of the schools machines. On the windows only computers I normally run PC Wizard to quickly get a good overview of the machines hardware, software and network settings. Is there an equivalent tool preferable with a GUI and an export option to html or pdf in Ubuntu. I have tried a few options such as: Gnomes gconf-editor hardinfo (GUI) lshw (CLI) I'm just looking for an all in one application that builds a detailed profile of the installed software, hardware and network setting of a particular machine. I have found Sysinfo which is quite good, it displays the most important hardware info and allows you to save it to a text file with a neat GUI. I'm still looking for a more complete solution but it's a good start.

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• What techniques can I use to render very large numbers of objects more efficiently in OpenGL?

  - by Luke

  You can think of my application as drawing a very large ball-and-stick diagram (or graph). At times, this graph can get very large, where the number of elements even outnumbers the pixels on the screen. Currently I am simply passing all of my textures (as GL_POINTS) and lines to the graphics card using VBO's. When the number of elements outnumbers the number of pixels, is this the most efficient way to do this? Or should I do some calculations on the CPU side before handing everything over to the GPU? If it matters, I do use GL_DEPTH_TEST and GL_ALPHA_TEST. I do some alpha blending, but probably not enough to make a huge performance difference. My scene can be static at times, but the user has control over a typical arc-ball camera and can pan, rotate, or zoom. It is during these operations that performance degradation is noticeable.

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• Expandable or Auto-Resize TextBox Height

  Recently, I was asked to prepare a Facebook like expandable textbox in a ASP.NET web application, where user can input text and the textbox can be re-sized (more specifically the height) dynamically. I searched for a while and found quite a lot of solutions that use jQuery (example). However, I was looking for something more intrinsic and simple, and finally I found another script on a forum that just use few lines of JavaScript codes: 1. Control declaration: <asp:TextBox ID="txtMsg"...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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• Powermapper alternatives and google analytics?

  - by rugbert

  Whats a good application to map the hierarchical structure of a website and maybe get some google analytic action going on? Powermapper is pretty expensive and the trial version didnt seem particularly good at importing google analytics CSV files as advertised. In fact, out of the 1000 pages mapped, exactly 0 were successfully imported. I dont really need all the features Powermapper offers anyway, so the price tag is a bit much. All I really need is like, a simple visual representation of my (automatically generated) site structure (like a hierarchical site structure) and the ability to integrate my google analytic stats (page views mostly) with it.

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• Apple Gets the Message About Centralized Notifications on Mobile

  - by ultan o'broin

  Yep, looks like iOS5 introduces a centralized messaging system: the Notification Center. Wonder where they got that idea from? Seriously, way to go though; this matches and probably betters what I really like about Android’s notifications system. I’ll have to check it out myself, though. Application UX's own research confirmed the centralized approach as something users wanted in research last year. This feature will really help the iOS in the enterprise user market too. Up to now, iOS is pretty dismal in the notifications space IMO.

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• Setting up lvm with HDD and SSD

  - by stonegrizzly

  My current hard drive is just about full and rather than just toss it and get a new one (since it works fine), I want to get a new drive and set them both up using lvm. While I'm at it, I also want to get an SSD to install the OS and applications on. This is my plan: Put / on the SSD (one partition) Put /tmp on a ram disk Put /var on a partition on my new drive Put /home on the rest of the new drive and my current drive using lvm. My goals are: Speed up boot time and application launch Minimize unnecessary writes to the SSD Never have to worry about which disk/partition to store my files on. I want the OS & lvm to take care of that Does this make sense? I'm fairly experienced with Ubuntu but I've never dealt with lvm before.

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• Should single purpose utility app use a class

  - by jmoreno

  When writing a small utility app, that does just one thing, should that one thing be encapsulated in a seperate class, or just let it be part of whatever class/module is used to start the application? I.e. Main would consist of 2 or three lines calling the constructor and then the DoIt methods, nothing else. Or should Main be the DoIt method, with whatever functions it needs added to the main class? Asking because I want to get some alternative perspective, but couldn't find a similar question. If my google-fu is bad and there's a dup, please close.

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• SQLSaturday # 286 - Louisville, KY

  Join SQL Server MVP Grant Fritchey and other SQL Server professionals for a free day of training and networking at SQL Saturday Louisville, June 21. This is a free event, however there are also two paid-for precons available, run by Grant Fritchey and David Fackler. Register for SQL Sat while space is available. 24% of devs don’t use database source control – make sure you aren’t one of themVersion control is standard for application code, but databases haven’t caught up. So what steps can you take to put your SQL databases under version control? Why should you start doing it? Read more to find out…

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• ClearTrace Supports SQL Server 2008 R2

  - by Bill Graziano

  It was a long time coming and I hope worth the wait.  If you have SQL Server 2008 R2 installed on the same box as ClearTrace and you download the latest ClearTrace build (36) you’ll be able to read SQL Server 2008 R2 traces.  I also fixed a bug handling very, very large SQL statements.  I encountered an INSERT statement that was 12MB in size.  It was storing XML in a database.  ClearTrace uses regular expressions to clean up the SQL it finds.  Running two dozen regular expressions over this 12MB string caused the application to crash.  In this build I’m just skipping any statement over 1MB.  I’ll do something a little nicer in the next build. (And if you don’t want to download ClearTrace you can test the online version at www.TraceTune.com)

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• unity: how to have a window on all workspaces

  - by noumenon

  I'm using Precise (12.04.1) and I'm using Unity. I have 3 workspaces. I want a particular window/application (say firefox) to be present on all workspaces. This is easy to do on something like LXDE (e.g. Lubuntu) where I just have to right-click the titlebar and select "show on all workspaces". Then no matter which workspace I move to, the desired window/app is present on each one. I can't find a way to do this in Unity. Please help.

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• How to enable a symlink in this case

  - by Bragboy

  I cannot categorize this question under ubuntu since it has nothing to do with it. But I know people here can definitely answer this. I login to one of my deployment boxes using SSH (no ubuntu here). I am working in a tool called TeamCity which uses a folder called ".BuildServer" under home directory of the user. This folder may grow in size as the application runs but the current user is only given a limited amount of space. But the good thing this I got a folder access outside /home/deploy (deploy being the user here) folder. I now want to link this .BuildServer inside the /home/deploy directory to the other folder where I got permission for (meaning all the files should be re-routed to that directory) Hope my question was clear, please help.

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• Parsing glGetShaderInfoLog() to get error info. Is this reliable, or is there a better way?

  - by m4ttbush

  I want to get a list of errors and their line numbers so I can display the error information different to how it's formatted in the error string, and also show the line in error. It looks easy enough to just parse the result of glGetShaderInfoLog(), look for "ERROR:" then read the next number up to : and then the next, and then the error description up to the next newline. But the OpenGL docs say "Application developers should not expect different OpenGL implementations to produce identical information logs." Which makes me worry that my code may behave incorrectly on different systems. I don't need them to be identical, I just need them to follow the same format. So is there a better way to get a list of errors with line number separate, is it safe to assume that they'll always follow the "ERROR: 0:123:" format, or is there simply no reliable way to do this? Thanks!

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• Oracle Open World ?? 2012 ???????

  - by user13136722

  ????????????? Oracle OpenWorld Tokyo 2012 | ORACLE® JAPAN ????????·?????????????????????????????????????????????? ?????grep?????????????????????????????????????????? ???????????????????????????????????????XML??DOM???????????? $ curl -s https://oj-events.jp/public/application/add/32?ss_ad_code=|sed 's/\<td\>/tr/g;s/span><br \/>/span>/;s/<div>\[\(.*\)\][<br />]*<\/div>/[\1]/'|w3m -dump -T text/html -cols 512|grep -A 2 '\[ \]' |sed -n '/[0-9]:[0-9]/,$p'|head -20 K1-01 9:00-11:15 ??????????[ ] ?? ENGINEERED FOR INNOVATION ?????????????? -- [ ]S1-03 11:50-12:35 ????????????????????CIO???IT??????????? ????? -- [ ]S1-08 11:50-12:35 ????????????????????????????????? ?????????????? -- [ ]S1-11 13:00-13:45 [??????·????]??????????????????????????????-??????????????????AIST??????????Oracle Exadata ????????? -- [ ]S1-13 13:00-13:45 Oracle WebLogic Server 12c ???????????Java???:???????Java EE??? ????·???????? -- ???????? head ????????????????????????? ???????????? ????????????? 7113 ????????????

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• how should I change the representation (not mimetype) of a resource?

  - by xenoterracide

  I'm looking at how I can change the representation of a payload at runtime for varied potential advantages, but I'm not sure how to do it. Specifically collections. Array of Pairs [{ <resource_uri> : { <entity> }, ...}] Array of Objects [<entity>,...] Array of Resources [<resource_uri>] Map of entities { <resource_uri> : { <entity> }, ... } My problem is, I'm not sure if I should put these different representations of the sets at different URI's, give them slightly varied mime types, e.g. application/foomap+json or perhaps use an optional query parameter ?format=map, or resource /entities/map. The UI is going to hide this, this is for programmatic web service access only (which the "UI's JS will have to call).

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