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  • How do I get my programs to communicate with each other

    - by Benjamin Lindqvist
    I'm basically just getting started with programming. The problem I have with progressing is that I have a hard time learning stuff just for the sake of knowing them - I do better when there's a problem to be solved or a task to be completed so I can learn 'on the job'. So I'm interested in starting some interesting project. I know the basics of Python, Java, Matlab and some C++ aswell and I know enough about microcontrollers to make LED blink etc. The type of stuff I'm looking for is for example scraping some weather forecast site (with Python) and outputting the chance of rain to a LCD display, or a program that makes chrome open and log in to facebook if I say "HAL, time for facebook", or more generally, a program that reads serial/USB input, looks for certain sequences and sends instructions to some other program if it finds one. Do you open some kind of shared stream in which one program reads and one writes? What do I need to read up on to do accomplish this myself? I have no experience with linux or the linux terminal, but looking over peoples shoulders makes me suspect that's what people use. Is that correct?

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  • GLSL, all in one or many shader programs?

    - by stjepano
    I am doing some 3D demos using OpenGL and I noticed that GLSL is somewhat "limited" (or is it just me?). Anyway I have many different types of materials. Some materials have ambient and diffuse color, some materials have ambient occlusion map, some have specular map and bump map etc. Is it better to support everything in one vertex/fragment shader pair or is it better to create many vertex/fragment shaders and select them based on currently selected material? What is the usual shader strategy in OpenGL or D3D?

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  • Feature Usage Reporting in Early Access Programs

    After doing Web development, you can get very used to the luxury of having basic information about your users' machines and browsers. With their permission, you can also get the same information from an application, and can even get more targeted anonymous information that will tell you how the features are used. Kevin explains how this can be used with early access builds to improve the reliability and usability of applications.

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  • Rolling Back the Clock: Shell only Programs

    <b>Systhread:</b> "System Administrators who remember the day when they did not have a graphics display rarely think about wanting to time travel for the pure joy of using a terminal. It is possible, however, to virtually do so by using either all or mostly text only utilities and perhaps a retro looking X windows desktop. In this text a look at a small experiment to see how well that went in one particular instance."

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  • how to add programs to ubuntu without internet access

    - by captainandcoke
    I don't have internet access at my home and it takes me about a half hour to ride my bike to the library. I have downloaded .deb files to try to install at my home computer but everyone I have downloaded says it can't install because it depends on package X. The next day I will download package X and it will require package Y. Is there anyway to find out what ALL the sub-dependencies are for deb files? I have tried to boot from USB or External Hard drive on the library computers but the security settings prevent this. Also, I do not know anyone with a Linux computer.

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  • To sell or give for free

    - by QAH
    Hello everyone! I am currently making a game that I was originally planning to sell. It is a simple 2D arcade style game for the PC. I've seen many indie games become popular and generate revenue from advertisements, but the game itself remains free. I need some advice on whether or not I should sell my game, release it for free with advertisements, or ask for donations and keep the game free. I feel that my game is fun, but of course the graphics aren't tip top because I am a programmer, not an artist. I just take screenshots of 3D models I get from Turbosquid and crop around it to make a sprite. Also, and I could be very wrong about this, it seems that there are more legal issues surrounding selling a game than making it free and generating revenue from advertisement, or asking for donations. If I am wrong, someone please correct me. Also, I am very interested in generating some revenue for my work, but that isn't at the very top of my list. I am in my last year of high school, soon to be going to college, and I am going to major in computer science/software engineering. So I am trying to gain some preliminary experience at home by coding stuff every day. One way of getting this experience is by making this game. So what do you think? What route should I take? What has worked well with other indie games? Thanks in advance.

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  • Compiz Expo freezes programs

    - by James
    I'm using 11.10, and when I use the Expo feature and then return to a active workspace, any open windows are click-able, but they don't actually change. Here's what I mean: In Google chrome, after Expo, I can click on links/new tab button, etc. However, though the mouse will spin and the program is actually working, the program won't update visibly unless I minimise/restore (or vice-versa) the entire window. Edit: I've found others who have the same problem (unrelated to Expo). It would seem that though the program remains running, its content won't refresh unless it is first maximized then minimized. Edit: Problem solved by resetting compiz.

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  • Add rules (filters) to ftp programs to avoid uploading certain files/folders

    - by guisasso
    i use Filezilla as my ftp client, but this question goes to any other client that could be useful. Can i (in any client) add rules (filters) to an ftp program to avoid upload of certain files or folders? For example: Expression web creates those annoying _vti_cnf folders, or, certain folders in which i have the original version of a picture without a watermark that i don't want to upload. Example, i have a folder A, that has sub folders "original" and "current", i would like to add a filter, so every time i select A to be uploaded, "original" wouldn't go, but "current would".

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  • My self-generated CA is nearing it's end-of-life; what are the best practices for CA-rollover?

    - by Alphager
    Some buddies and me banded together to rent a small server to use for email, web-hosting and jabber. Early on we decided to generate our own Certificate Authority(CA) and sign all our certificates with that CA. It worked great! However, the original CA-cert is nearing it's end-of-life (it expires in five months). Obviously, we will have to generate a new cert and install it on all our computers. Are there any best practices we should follow? We have to re-generate all certs and sign them with the new CA, right?

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  • After Re-opening Laptop, Programs Blink with Each Keystroke, Ubuntu 12.04, Dell Latitude D620

    - by Calhan
    I'm running Ubuntu version 12.04 on Dell D620 laptop and have been for months. Everything has been working fine until a week ago, when suddenly every time I close the laptop and open it again, the program in use blinks each time I make a keystroke. Only the program blinks, not the whole screen. Rebooting solves the issue until I close the lid again. I have installed all the updates recommended in the package manager. Clues?

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  • What Book-Library Organizing Programs are available?

    - by el10780
    I would like to ask if there is any good program for ubuntu 12.04 to organize a library of books.I want to mention that I also have books written in my native language (Greek) and I have books written in other languages like English,French, etc too .So basically I need an application which can fetch information from databases for Greek books. For example - Adding a Greek (ISBN) book database source and when I type the ISBN of the book in the program ,it should find the book from that databases. Is this possible? I already tried Tellico and GCstar but they were unable to find books with Greek ISBN .I tried to add a Greek book source but it wasn't successful.

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  • Phone complains that identical GLSL struct definition differs in vert/frag programs

    - by stephelton
    When I provide the following struct definition in linked frag and vert shaders, my phone (Samsung Vibrant / Android 2.2) complains that the definition differs. struct Light { mediump vec3 _position; lowp vec4 _ambient; lowp vec4 _diffuse; lowp vec4 _specular; bool _isDirectional; mediump vec3 _attenuation; // constant, linear, and quadratic components }; uniform Light u_light; I know the struct is identical because its included from another file. These shaders work on a linux implementation and on my Android 3.0 tablet. Both shaders declare "precision mediump float;" The exact error is: Uniform variable u_light type/precision does not match in vertex and fragment shader Am I doing anything wrong here, or is my phone's implementation broken? Any advice (other than file a bug report?)

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  • video-programs seem to be "wreckoned"?

    - by dschinn1001
    Is it because I have to many different video-players installed ? after update from 12.04 to 12.10 it seems, that video-playing is not working any more ? it crashes, or ends up with "we have found a system-failure" - window. (failure-report is not working and crashing too after correct password). this concerns: medibuntu, mediaplayer, totem, mplayer and xine (probably too many installed and I should decide for only one ? - but it was no problem in 12.04 ?).

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  • Java Certification Programs in India

    - by user2948246
    I am a current Masters student studying in the USA. My major is Computer Science. I did not get any summer internship and thus wanted to update my resume. I decided to come to india to do some courses. I want to know if a Java certification program from NIIT or APTECH holds any weightage in the US when i apply for my full time. I also plan on taking up a course on Hadoop and learn a couple of languages on my own.

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  • Does an incomplete update affect my programs?

    - by Junior
    I saw a pop up which said 'updates are available' so I clicked it. I completely forgot that the installation was incomplete, I logged off. NOw when I came back, it told me to do a partial update. I read the internet for information, partial update wasn't the safest thing for me. I tried to log in to skype, it said another skype may exist. That wasn't true, Skype wasn't opened. I'm not sure if it's because of the incomplete update, but I'm quite off, in trouble. Please reply. Thank you Regards Junior

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  • How to organize functional programs

    - by bleakcabal
    In OOP, your basic unit of organization for code is the class. A frequently used methodology in Java, C# and similar languages is to organize your code around having one file for each class with the file name following the class name. You can consider each of these class as a unit of organization to group a single concept. These classes are in in namespaces which often follow the directory structure of the files in the solution/project. Namespaces are another level of organization. How are large projects in functional languages typically organized? How to you determine how to split your functions into different files? Are other units of grouping beside files used? How is code typically organized within a single file?

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  • How to install programs downloaded from the internet?

    - by Rosamunda Rosamunda
    I've downloadad the latest XAMPP file, to install it into Ubuntu 13.04. After downloading the file, I just can run it. I've double click it (and I've tried right click and clicking "open", whith the same result). All the answer I get is this message: Could not display “xampp-linux-1.8.3-1-installer.run”. There is no application installed for “executable” files. Do you want to search for an application to open this file? I've tried searching for an application, with no result... Also, I haven't found any questions related to this issue with the 13.04 Unity version... I've tried this solution, with no result. Please note that this isn't a Xampp question, the same happened to me when I tried to install Skype. UPDATE: I've tried this solution: cd ~/Downloads chmod +x myfile.run sudo sh myfile.run And I've got this error: Syntax error: "(" unexpected What should I do? Thanks!

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  • Run programs that require a window manager, on the CLI

    - by Twitchy
    Is there any way I can run a game server (MW3) under wine without requiring a window manager present? Currently to run windows only game servers on my Ubuntu box, I have to start them using RDP access as this creates a X session which the program (which has its own GUI). This is a pain as it cannot be automated (or can it?) on start up. What I would rather is some sort of X session emulator that pulls the console output of the program into the CLI so that I can automate server start ups. Is there any program or method that can do this?

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  • Why Do You Need SSL Certificate

    SSL (Secure Sockets Layer) is an encrypting modus operandi that ensures the en route security of the personal details processed by the browser to the server. We all know that online shopping is prefe... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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  • Do Small Companies Also Need An SSL Certificate

    The internet has enabled even the small companies to compete with the large companies, but the small companies need offer some of the best online services to their customers. Online shopping is picki... [Author: Jack Melde - Computers and Internet - May 01, 2010]

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