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• Error trying to install the Java SDK

  - by Ray

  I need to install the Java 6 SDK, but after running this: sudo apt-get install sun-java6-jdk sun-java6-jre sun-java6-source I end up with this: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: sun-java6-jdk : Depends: sun-java6-bin (>= 6.26-1lucid1) but it is not going to be installed sun-java6-jre : Depends: sun-java6-bin (>= 6.26-1lucid1) but it is not going to be installed or ia32-sun-java6-bin (>= 6.26-1lucid1) but it is not installable Recommends: gsfonts-x11 but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). I'm quite new to Ubuntu and need the packages for my course. I guess they've become corrupted but, how can I fix this?

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• Cannot install nodejs and npm

  - by user809829

  I'm trying to install nodejs and npm, however, it fails. This is my terminal: sudo apt-get install nodejs npm Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: nodejs : Conflicts: npm E: Unable to correct problems, you have held broken packages. What to do? I'm kinda lost :(

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• Incremental file system backups

  - by brunopereira81

  I use Virtual Box a lot for distro / applications testing purposes. One of the features I simply love about it is virtual machines snapshots, its saves a state of a virtual machine and is able to restore it to its former glory if something you did went wrong without any problems and without consuming your all hard disk space. On my live systems I know how to create a 1:1 image of the file system but all the solutions I'v known will create a new image of the complete file system. Are there any programs / file systems that are capable of taking a snapshot of a current file system, save it on another location but instead of making a complete new image it creates incremental backups? To easy describe what I want, it should be as dd images of a file system, but instead of only a full backup it would also create incremental. I am not looking for clonezilla, etc. It should run within the system itself with no (or almost none) intervention from the user, but contain all the data of the file systems.

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• Manual bootstrapping with Juju on VPS

  - by aaronfc

  I recently bought a VPS (OpenVZ) with Ubuntu 13.04. Lately I've read about Juju and I thought it would match my needs on my brand new VPS as I want to easily configure Hadoop, Wordpress, Graphite and other services. I tried the juju-local approach but I got an error while installing it: http://paste.ubuntu.com/6373143/ So I got to #juju IRC channel and I was told to use "Manual bootstrapping" and create a question here in order to get more info as it seems is something under development. Could anybody help me getting Juju to work on my VPS? Did any had the same problem? Thanks in advance! EDIT: After some more research (and after reading my own question) I think I should clarify a little more the situation. What I want is a manual provider to allow me manage my VPS from Juju. I know there might be a work in progress and I would appreciate any info regarding it's state and any possible solution :)

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• Windows Azure Tools for Microsoft Visual Studio 1.2 (June 2010)

  - by Eric Nelson

  Yey – we have a public release of the Windows Azure Tools which fully supports Visual Studio 2010 RTM and the .NET 4 Framework. And the biggy I have been waiting for – IntelliTrace support to debug your cloud deployed services (Requires  VS2010 Ultimate) Download today http://bit.ly/azuretoolsjune New for version 1.2: Visual Studio 2010 RTM Support: Full support for Visual Studio 2010 RTM. .NET 4 support: Choose to build services targeting either the .NET 3.5 or .NET 4 framework. Cloud storage explorer: Displays a read-only view of Windows Azure tables and blob containers through Server Explorer. Integrated deployment: Deploy services directly from Visual Studio by selecting ‘Publish’ from Solution Explorer. Service monitoring: Keep track of the state of your services through the ‘compute’ node in Server Explorer. IntelliTrace support for services running in the cloud: Adds support for debugging services in the cloud by using the Visual Studio 2010 IntelliTrace feature. This is enabled by using the deployment feature, and logs are retrieved through Server Explorer. Related Links: http://ukazure.ning.com for UK fans of Windows Azure IntelliTrace explained

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• How is this number calculated?

  - by Hamid

  I have numbers; A == 0x20000000 B == 18 C == (B/10) D == 0x20000004 == (A + C) A and D are in hex, but I'm not sure what the assumed numeric bases of the others are (although I'd assume base 10 since they don't explicitly state a base. It may or may not be relevant but I'm dealing with memory addresses, A and D are pointers. The part I'm failing to understand is how 18/10 gives me 0x4. Edit: Code for clarity: *address1 (pointer is to address: 0x20000000) printf("Test1: %p\n", address1); printf("Test2: %p\n", address1+(18/10)); printf("Test3: %p\n", address1+(21/10)); Output: Test1: 0x20000000 Test2: 0x20000004 Test3: 0x20000008

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• fix a broken ubuntu installation from pendrive

  - by interstar

  Something went wrong in the upgrade of my Ubuntu 13.04 to 13.10 The upgrade basically crashed halfway through. On booting I was thrown into a maintainence screen. I found some online instructions for fixing with the package manager ... Which seemed to do a lot of setting up. But then crashed saying package is in a bad inconsistent state. Now I'm in a position where Ubuntu starts again, but goes into a low-res screen and there's no WiFi. I have no Ethernet cable connection but I did download the 13.10 iso on another machine and put it on a pen drive. So I'd like to know there's a way of asking the machine from inside Ubuntu to redo its upgrade from the data on the pendrive rather than WiFi. Is this possible? Cheers Phil

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• Google is not treating two Austrailian schools as separate sites when both are subdomains of qld.edu.au

  - by LuckySpoon

  My question relates to two websites, each of which is a "Calvary Christian College", however in two totally different locations and unrelated to each other entirely (except by name, and domain). All schools in the state are issued a .qld.edu.au, in this case calvary.qld.edu.au and calvarycc.qld.edu.au. Now what's interesting is that these domains are crossing each other in sitelinks for searches such as "calvary christian college townsville" (if you check the sitelinks 2/6 are to a different domain). I've put a demotion in for this ages ago (we control calvary.qld.edu.au), however we're seeing no change on the results page. I have been able to get the owners of calvarycc.qld.edu.au to submit demotions for our domain, which should go in sometime this week. What can we do to tell Google that these websites are not interchangeable, despite both appearing as "subdomains" of qld.edu.au. We can possibly open channels of communication with the administrators of qld.edu.au but will need to tell them what we need to change, and at this point I'm out of ideas.

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• Would you use UML if it kept stakeholders from requesting changes frequently?

  - by Huperniketes

  As much as programmers hate to document their code/system and draw UML (especially, Sequencing, Activity and State machine diagrams) or other diagramming notation, would you agree to do it if it kept managers from requesting a "minor change" every couple of weeks? IOW, would you put together visual models to document the system if it helped you demonstrate to managers what the effect of changes are and why it takes so long to implement them? (Edited to help programmers understand what type of answer I'm looking for.) 2nd edit: Restating my question again, "Would you be willing to use some diagramming notation, against your better nature as a programmer, if it helped you manage change requests?" This question isn't asking if there might be something wrong with the process. It's a given that there's something wrong with the process. Would you be willing to do more work to improve it?

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• Server for online browser game

  - by Tim Rogers

  I am going to be making an online single player browser game. The online element is needed so that a player can login and store the state of their game. This will include things like what buildings have been made and where they have been positioned as well as the users personal statistics and achievements. At this point in time, I am expecting all of the game logic to be performed client side So far, I am thinking I will use flash for creating the client side of the game. I am also creating a MySQL database to store all the users information. My question is how do I connect the two. Presumably I will need some sort of server application which will listen for incoming requests from any clients, perform the SQL query and then return the data. Does anyone have any recommendations of what technology/language to use?

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• Cannot install Android 2.3 libs dies to missing ia32-libs-multiarch

  - by Enrique

  I need to get my box up to par or android development, but cannot get ia32-libs to install for the life of me. Can anyone help? The error Android's tool gave me was Stopping ADB server failed (code -1) and after a bit of investigation I found that I needed to install the ia32-libs which from my understanding is a pain. Ubuntu 12.04 (x64) xxx@xxx:~$ sudo apt-get -f install ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ia32-libs : Depends: ia32-libs-multiarch E: Unable to correct problems, you have held broken packages.

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• Are there any examples of a temporal field/object updater?

  - by Bryan Agee

  The system in question has numerous examples of temporal objects and fields--ones which are a certain variable at a certain point in time. An example of this would be someone's rate of pay--there are different answers depending on when you ask and what the constraints might be; eg, can there ever be more than one of a certain temporal object concurrently, etc. Ideally, there would be an object that handles those constraints when a new state/stateful object is introduced; when a new value is set, it would prevent creating negative ranges and overlaps. Martin Fowler has written some great material on this (such as this description of Temporal Objects) , but what I've found of it tends to be entirely theoretic, with no concrete implementations. PHP is the target language, but examples in any language would be most helpful.

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• Will Unity allow users to change the color/appearance of the top-Panel?

  - by Sam

  I'm very excited by the functional design principles and keyboard shortcuts that are being implemented for Unity. And function of use is more important to me than looks. However, after experiencing the aesthetic beauty of the display of the top panel in gnome-shell, I was wondering if users would be able to alter the color of Unity's top panel? IMHO it does not look as good as the gnome-shell implementation (or mac OS X/iPad). I think if an alternate color/appearance were chosen for the panel, it would make a big difference aesthetically. Is there a way to make it Black like gnome-shell? Or are the color choices limited to theme-designs as pointed out in this answer? For efficiency and clarity, the Panel should be better differentiated from application controls. The panel should be a different color because it has a "constant (always present) state," unlike application controls. For contrast and easy-recognition, I would like to make the Panel black (like gnome-shell) but make the application controls (e.g., those of Firefox) "Inverted"

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• Do programmers possess the means of production?

  - by Peter Turner

  I was listening to The Servile State by Hilare Belloc this morning and pondering whether or not I possessed the means of production, as did the peasant of the middle ages; as did not his descendants after the oligarchs of England forced him into servility. The means of production was the arable land that the serf was seated on, which even though not legally his, was illegal to evict him from. So, as programmers, with the hither-to-unknown supply of free tools and resources, have we reclaimed as a class of workers, unlike any others, the means of production. Given the chance, a midrange PC and a stable internet connection, could we not each of us be wholly self sufficient and not just wage earners?

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• custom facebook connect image - Is it facebook's policy violation?

  - by Viruthagiri

  I was going to change facebook's default login button with my custom image like mashable I mean like this But I found a article which state its against facebook's policies Is it really a violation? If it is how come mashable using custom image? Can someone answer me? Update This is the exact image i would like to use. Facebook mentioned like this in this page. While you may scale the size to suit your needs, you may not modify the “f” logo in any other way (such as by changing the design or color). If you are unable to use the correct colour due to technical limitations, you may revert to black and white. So my sign in with facebook image violating facebook policy in anyway?

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• GLSL Shader Effects: How to do motion blur, etc?

  - by DevilWithin

  I am not sure how right it is to ask this question, but still here it goes. I have a full 2D environment, with sprites going around as landscape, characters, etc And to make it more state-of-art looking, i want to implement a motion blur effect, similar to modern FPS's (i.e. crysis) blur when moving fast the camera. In a sidescroller, the desired effect is having this slight blur appearing to give the idea of fast movement, when the camera is moving. If anyone could give me some tips on doing this, im assuming in a pixel shader, i'd be grate. Also, if anyone has other good tips on cool pixel shader effects for 2D games it would be awesome, like some stylizing post fx, such as previous Prince of Persia illustrative style. Thanks

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• How to add support for the JPEG image format

  - by Samir Sabri

  After installing Imagemagick, I've tested it with jpg image, like this: identify 1.jpg But, I got this result: identify: no decode delegate for this image format `1.jpg' @ error/constitute.c/ReadImage/550. Then, I tried to add support for JPEG format by: yum install libjpeg libjpeg-devel but, I got: Setting up Install Process No package libjpeg available. No package libjpeg-devel available. Nothing to do I thought I need to update the apt-get, I did: apt-get install libjpeg libjpeg-devel but, I got: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package libjpeg E: Unable to locate package libjpeg-devel Is there an easy way to get those libraries installed ? I am using Ubuntu 12.04.

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• the web technology stack is too deep [closed]

  - by AgostinoX

  A standard state-of-the-art project requires at least jsf + spring + faces palette + orm. That's a lot of stuff. Also frameworks like spring misses to bring to the point of starting developing. Otherwise, things like spring-roo wuoldn't even exist. The solution to this may be buy support. Have dedicated people doing integration. Switch to ruby on rails. Switch to dot.net. Since this is a problem, I'm intrested in HOW people address this (java ee) specific concern.

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• What's new with Java technology? Java Embedded

  - by hinkmond

  As this article points out, Java Embedded is a safer, more robust and easier to develop platform for small networked devices. So, get ready for good things to come from Java Embedded... See: Java Embedded: Next New Thing Here's a quote: Through the past few years the industry as we know it has seen a big boom with the mobile and cloud revolution. Today, there has been an enormous amount of buzz around machine to machine (M2M) or the "Internet of Things," since we are moving into a state where everything is going to have to be interconnected and will have to properly communicate together... Today, Java Embedded provides that platform. I like it! As long as there's no Zombie Apocalypse, I think Java Embedded has a great future! Hinkmond

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• Unable to Upgrade from 13.04 to 13.10

  - by Mohit

  Following is what I get as error Error during update A problem occurred during the update. This is usually some sort of network problem, please check your network connection and retry. W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/main/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/restricted/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/universe/source/Sources 404 Not Found , W:Failed to fetch http://bg.archive.ubuntu.com/ubuntu/dists/natty-backports/multiverse/source/Sources 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead. Restoring original system state I am using command line "do-release-upgrade" I have changed my dns to google public dns and verified that using nslookup and host -v could not find bg.archive.ubuntu.com in any of the source list files. not only in that in another tab I have ping google running just to verify that network is not down. Network has no issues.

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• Automatically zoom out the camera to show all players

  - by user36159

  I am building a game in XNA that takes place in a rectangular arena. The game is multiplayer and each player may go where they like within the arena. The camera is a perspective camera that looks directly downwards. The camera should be automatically repositioned based on the game state. Currently, the xy position is a weighted sum of the xy positions of important entities. I would like the camera's z position to be calculated from the xy coordinates so that it zooms out to the point where all important entities are visible. My current approach is to: hw = the greatest x distance from the camera to an important entity hh = the greatest y distance from the camera to an important entity Calculate z = max(hw / tan(FoVx), hh / tan(FoVy)) My code seems to almost work as it should, but the resulting z values are always too low by a factor of about 4. Any ideas?

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• SQL Down Under Show 51 - Guest Conor Cunningham - Now online

  - by Greg Low

  Late last night I got to record an interview with Conor Cunningham.Most people that know Conor have come across him as the product team wizard that knows so much about query processing and optimization in SQL Server. Conor is currently spending quite a lot of time working on Windows Azure SQL Database, which we used to know as SQL Azure. I'm still trying to think of a good way to say "WASD". I suppose I'll pronounce it like "wassid". Windows Azure SQL Reporting is easier. I think it just needs to be pronounced like "wazza" with a very Australian accent.In the show, we've spent time on the current state of the platform, on dispelling a number of common misbeliefs about the product, and hopefully on answering most of the common questions that seem to get asked about it. We then ventured into Federations, Data Sync, and Reporting.You'll find the show (and previous shows) here: http://www.sqldownunder.com/Resources/Podcast.aspxEnjoy!PS: For those that like transcripts, we've got the process for producing them much improved now and the transcript should also be up within a few days.

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• What is the logic behind Ubuntu's messy installation process?

  - by Swaahaa

  Before you get into the conclusion that I want to " DISCUSS " this question, I would like stop you with whole respect and state that- I want A Clear Cut Answer for this question. Ubuntu is such an awesome Operating System. Why do the user dread with fear before installing each and every application. I mean why not a platform in Ubuntu which JUST INSTALLS ANYTHING. I am happy when after a lot of SUDOS, TERMINALS and this and that I INSTALL something. But what is the logic behind such a mess.

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• Ubuntu 14.04 Notification incorrectly displayed

  - by xenolyse

  I have a problem with my notifications on Ubuntu 14.04 x64. The notifications are just plain text with a colored background, and are also strangely placed in the top left corner. I have no idea on how it changed. After one reboot it was just there.. Here is a picture of the problem in question.: As you can see the notification appear over the unified menu. How can I restore the original state of the notification bubble? Here are the settings in ~/.notify-osd slot-allocation = fixed bubble-expire-timeout = 10sec bubble-vertical-gap = 5px bubble-horizontal-gap = 5px bubble-corner-radius = 37,5% bubble-icon-size = 30px bubble-gauge-size = 6px bubble-width = 240px bubble-background-color = 131313 bubble-background-opacity = 90% text-margin-size = 10px text-title-size = 100% text-title-weight = bold text-title-color = ffffff text-title-opacity = 100% text-body-size = 90% text-body-weight = normal text-body-color = eaeaea text-body-opacity = 100% text-shadow-opacity = 100% If I check the org.freedesktop.Notifications.service(/usr/share/dbus-1/servies) it appears to use the correct one. [D-BUS Service] Name=org.freedesktop.Notifications Exec=/usr/lib/x86_64-linux-gnu/notify-osd

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• Android Emulator - Ubuntu 12.04

  - by Aneesh karthik C

  When I type in the command @emulator Andreud where 'Andreud' is the name of the emulator I created. It gives the following errors and a blank screen in which I should get android home screen, icons, etc shows up. PVRDRIInitPVR2D: PVR2D device index (0)Failed to load libGL.so error libGL.so: cannot open shared object file: No such file or directory Failed to load libGL.so error libGL.so: cannot open shared object file: No such file or directory As per a comment I tried installing ia32-libs aneesh@nb14:~$ sudo apt-get install ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done Package ia32-libs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'ia32-libs' has no installation candidate I want the home screen to appear. Any help is greatly appreciated.

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