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• compile error in Ubuntu 10

  - by yozloy

  Hey guys I got a vps which run solusVM. I'm now trying to install ruby 1.9.2 in it. I follow this guide: after I run this command apt-get update apt-get -y install build-essential zlib1g zlib1g-dev libxml2 libxml2-dev libxslt-dev I got this error below root@makserver:/usr/local/src/ruby-1.9.2-p0# apt-get -f install Reading package lists... Done Building dependency tree... Done Correcting dependencies... Done The following extra packages will be installed: libc6 Suggested packages: glibc-doc The following packages will be upgraded: libc6 1 upgraded, 0 newly installed, 0 to remove and 80 not upgraded. Need to get 0B/4252kB of archives. After this operation, 4096B disk space will be freed. Do you want to continue [Y/n]? y debconf: apt-extracttemplates failed: Bad file descriptor (Reading database ... 21594 files and directories currently installed.) Preparing to replace libc6 2.11.1-0ubuntu7.2 (using .../libc6_2.11.1-0ubuntu7.8_amd64.deb) ... open2: fork failed: Cannot allocate memory at /usr/share/perl5/Debconf/ConfModule.pm line 59 dpkg: error processing /var/cache/apt/archives/libc6_2.11.1-0ubuntu7.8_amd64.deb (--unpack): subprocess new pre-installation script returned error exit status 12 Errors were encountered while processing: /var/cache/apt/archives/libc6_2.11.1-0ubuntu7.8_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) Anybody can tell me how can I correct this. Thanks

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• Compiled code spreadsheet-like cell management? (auto-updating)

  - by proGrammar

  Okay so I am fully aware how spreadsheets manage cells, they build dependency graphs where when one cell changes it tells all the other cells that are dependent on it that it changed. So they can from there update. How they update I think involves either re-evaluating the formulas stored as strings, or re-evaluating the abstract syntax tree which I think is stored differently and might be faster. Something like that. What I'm looking to do is manage a few variables in my code so I don't have to update them in the correct way, which would be a nightmare. But I also want it much faster than spreadsheets. And since I'm not looking for any functionality as great as are in these spreadsheets, I just figured from that thought point that there has to be a way to have a very fast implementation of this functionality. Especially since I don't have to modify cells after compiling unless that would be an option. I'm very new to programming so I have no idea. One example might be to have a code-generator that generates code that does this for me. But I have no clue what the generated code would look like. Specifically, how exactly would variables inform others that they need to update, and what do those variables do to update? I'm looking for any kind of ideas. Programming is not my job but nonetheless I was hoping to have some kind of system like this that would greatly help me with some stuff. Of course I have been programming plenty lately so I can still program. I just don't have the full scope on things. I'm looking for any kind of ideas, thank you very much in advance! Also, please help me with the tags. I know C# and Java mainly and I'm hoping to implement this in either of those languages and I'm hoping this can stay in those tags. Forcing this into some kind of spreadsheet tag wouldn't be accurate.

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• I have deleted python files in usr/bin and cant reinstall it

  - by Plonkaa

  I am a novice at Ubuntu and unfortunately i have deleted 3 files in the usr/bin folder python 2.7 python python 2.6 Now my update manager wont work and when i type in python into gnome it says that it is no longer there. Please help me ive tried loads of different things but it just wont work. The closest i got was the following: I typed in sudo apt-get -f install and i thought i had fixed it but then i got a error message - Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: gir1.2-folks-0.6 gir1.2-polkit-1.0 libcogl5 mutter-common gir1.2-json-1.0 libcaribou0 gir1.2-accountsservice-1.0 gir1.2-clutter-1.0 gir1.2-gkbd-3.0 gir1.2-networkmanager-1.0 caribou libcogl-common libmutter0 gir1.2-mutter-3.0 gjs gir1.2-caribou-1.0 libclutter-1.0-0 gir1.2-telepathylogger-0.2 libclutter-1.0-common cups-pk-helper gir1.2-upowerglib-1.0 gir1.2-cogl-1.0 libmozjs185-1.0 gir1.2-telepathyglib-0.12 gir1.2-gee-1.0 libgjs0c gnome-shell-common Use 'apt-get autoremove' to remove them. The following extra packages will be installed: ubuntu-sso-client The following packages will be upgraded: ubuntu-sso-client 1 upgraded, 0 newly installed, 0 to remove and 35 not upgraded. 2 not fully installed or removed. Need to get 0 B/57.7 kB of archives. After this operation, 16.4 kB of additional disk space will be used. Do you want to continue [Y/n]? y Setting up python-minimal (2.7.2-7ubuntu2) ... /var/lib/dpkg/info/python-minimal.postinst: 4: python2.7: not found dpkg: error processing python-minimal (--configure): subprocess installed post-installation script returned error exit status 127 Errors were encountered while processing: python-minimal E: Sub-process /usr/bin/dpkg returned an error code (1) any advice is appreciated!

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• How to Get a Smartphone-Style Word Suggestion on Windows

  - by Zainul Franciscus

  Have you ever wished that you can type faster and better in Windows ? Then you’re in luck, because today we’ll show you how to get a smartphone’s word suggestion in Windows. To accomplish that, you need to install AI Type, a software that gives word suggestion when you write in Windows.  AI Type not only fulfils our gratification to have a smartphone-style word suggestion for Windows,  AI Type also improves our writings by suggesting word according to its context. It  will also try to match words according to the  probability in which other users may have used it. Installing AI Type is a breeze; Just download the installer from AI Type website, run the executable, fill in a registration form, and you’re all set to use AI Type for your daily writing. Once you’re done with the installation, AI Type appears on your system tray. Latest Features How-To Geek ETC Macs Don’t Make You Creative! So Why Do Artists Really Love Apple? MacX DVD Ripper Pro is Free for How-To Geek Readers (Time Limited!) HTG Explains: What’s a Solid State Drive and What Do I Need to Know? How to Get Amazing Color from Photos in Photoshop, GIMP, and Paint.NET Learn To Adjust Contrast Like a Pro in Photoshop, GIMP, and Paint.NET Have You Ever Wondered How Your Operating System Got Its Name? Sync Blocker Stops iTunes from Automatically Syncing The Journey to the Mystical Forest [Wallpaper] Trace Your Browser’s Roots on the Browser Family Tree [Infographic] Save Files Directly from Your Browser to the Cloud in Chrome and Iron The Steve Jobs Chronicles – Charlie and the Apple Factory [Video] Google Chrome Updates; Faster, Cleaner Menus, Encrypted Password Syncing, and More

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• install libreoffice in Ubuntu 12.04 is impossible

  - by user1587239

  What is wrong with Ubuntu repositories? sudo apt-get install libreoffice 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: libreoffice : Depends: libreoffice-core (= 1:3.5.4-0ubuntu1.1) but it is not going to be installed Depends: libreoffice-writer but it is not going to be installed Depends: libreoffice-calc but it is not going to be installed Depends: libreoffice-impress but it is not going to be installed Depends: libreoffice-draw but it is not going to be installed Depends: libreoffice-math but it is not going to be installed Depends: libreoffice-base but it is not going to be installed Depends: libreoffice-filter-mobiledev but it is not going to be installed Depends: libreoffice-java-common (>= 1:3.5.4~) but it is not going to be installed Recommends: libreoffice-gnome but it is not going to be installed or libreoffice-kde but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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• Get Started with JavaFX 2 and Scene Builder

  - by Janice J. Heiss

  Up on otn/java is a very useful article by Oracle Java/Middleware/Core Tech Engineer Mark Heckler, titled, “How to Get Started (FAST!) with JavaFX 2 and Scene Builder.”  Heckler, who has development experience in numerous environments, shows developers how to develop a JavaFX application using Scene Builder “in less time than it takes to drink a cup of coffee, while learning your way around in the process”. He begins with a warning and a reassurance: “JavaFX is a new paradigm and can seem a bit imposing when you first take a look at it. But remember, JavaFX is easy and fun. Let's give it a try.” Next, after showing readers how to download and install JDK/JavaFX and Scene Builder, he informs the reader that they will “create a simple JavaFX application, create and modify a window using Scene Builder, and successfully test it in under 15 minutes.” Then readers download some NetBeans files:“EasyJavaFX.java contains the main application class. We won't do anything with this class for our example, as its primary purpose in life is to load the window definition code contained in the FXML file and then show the main stage/scene. You'll keep the JavaFX terms straight with ease if you relate them to the theater: a platform holds a stage, which contains scenes. SampleController.java is our controller class that provides the ‘brains’ behind the graphical interface. If you open the SampleController, you'll see that it includes a property and a method tagged with @FXML. This tag enables the integration of the visual controls and elements you define using Scene Builder, which are stored in an FXML (FX Markup Language) file. Sample.fxml is the definition file for our sample window. You can right-click and Edit the filename in the tree to view the underlying FXML -- and you may need to do that if you change filenames or properties by hand - or you can double-click on it to open it (visually) in Scene Builder.” Then Scene Builder enters the picture and the task is soon done. Check out the article here.

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• How do I force apt-get to install a package that will not install due to a bug introduced by Ubuntu 11.10?

  - by Hemm

  Ubuntu 11.10 separated out python-profiler from the Python standard library due to licensing philosophies. (According to what I could Google, correct me if I'm wrong.) This is an active bug since October for 11.10. I have Python 2.7.2 installed, so the dependency errors are wrong. 'apt-get check' does not resolve the problem. What is the best way to resolve to this? Thank you. sudo apt-get install python-profiler 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: python-profiler : Depends: python (>= 2.5) but it is not going to be installed Depends: python (< 2.8) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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• Should I cache the data or hit the database?

  - by JD01

  I have not worked with any caching mechanisms and was wondering what my options are in the .net world for the following scenario. We basically have a a REST Service where the user passes an ID of a Category (think folder) and this category may have lots of sub categories and each of the sub categories could have 1000 of media containers (think file reference objects) which contain information about a file that may be on a NAS or SAN server (files are videos in this case). The relationship between these categories is stored in a database together with some permission rules and meta data about the sub categories. So from a UI perspective we have a lazy loaded tree control which is driven by the user by clicking on each sub folder (think of Windows explorer). Once they come to a URL of the video file, they then can watch the video. The number of users could grow into the 1000s and the sub categories and videos could be in the 10000s as the system grows. The question is should we carry on the way it is currently working where each request hits the database or should we think about caching the data? We are on using IIS 6/7 and Asp.net.

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• Wine on Ubuntu 12.04 64bit. wine : Depends: wine1.4 but it is not going to be installed

  - by Nikola Borisov

  I'm running Ubuntu 12.04 64bit and I want to install wine nikola@carbon:~$ sudo apt-get install wine [sudo] password for nikola: Sorry, try again. [sudo] password for nikola: 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: wine : Depends: wine1.4 but it is not going to be installed E: Unable to correct problems, you have held broken packages. nikola@carbon:~$ I spend 4 hours and I have not made any progress. I don't get it. Ubuntu is a popular distro, wine is very common thing for people to want to run. Using 64bit system is what everyone should be doing (I don't even get why are there 32 bit version of ubuntu). Here is how the dependencies looks like: wine - wine1.4 wine1.4 - wine1.4-amd64 wine1.4-amd64 - wine1.4-common wine1.4-common - wine1.4 I see a problem here.... :( Please help me.

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• Added resolution not working after upgrading to 12.04

  - by David

  After upgrading, my screen resolution (added by xrandr comands on the start) did not work like before. Messages appear showing some errors (that i have never had in 11.10). "No se pudo aplicar la configuración almacenada para los monitores"/"Can't apply the stored configuration for the monitors." This script didn't work either. xrandr --newmode "1280x1024_60.00" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync xrandr --addmode VGA1 1280x1024_60.00 xrandr --output VGA1 --mode 1280x1024_60.00 I also tryed deleting monitors.xml but, nothing. This only erase the window message. It's been sayd that ##It's a normal buggy and well know problem for Pc's with Intel integrated video cards.## The new version of gnome-settings-daemon stores its configuration information in dconf rather than gconf. I tryed something, but the problem persist. This is what i did. Install the dconf-tools package, and then run dconf-editor. In the tree on the left, navigate org - gnome - settings-daemon - plugins - xrandr. Uncheck the active checkbox. restart your XServer (Ctrl+Alt+Backspace) (It didn't worked out for me, but it may be helpful to someone)

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• What are the requirements to test a website using jquery.get() ? [migrated]

  - by Frankie

  I am working on a simple website. It has to search quite a few text files in different sub-folders. The rest of the page uses jquery, so I would like to use it for this also. The function I am looking at is .get() for downloading the files. So my main question is, can I test this on my local computer (Ubuntu Linux) or do I have to have it uploaded to a server? Also, if there's a better way to go about this, that would be nice to know. However, I'm more worried about getting it working. Thanks, Frankie PS: Heres the JS/jQuery code for downloading the files to an array. g_lists = new Array(); $(":checkbox").each(function(i){ if ($(this).attr("name") != "0") { var path = "../" + $(this).attr("name") + ".txt"; $("#bot").append("<br />" + path); // debug $.get(path, function(data){ g_lists[i] = data; $("#bot").html(data); }); } else { g_lists[i] = ""; } }); Edit: Just a note about the path variable. I think it's correct, but I'm not 100% sure. I'm new to web development. Here's some examples it produces and the directory tree of the site. Maybe it will help, can't hurt. . +-- include ¦   +-- jquery.js ¦   +-- load.js +-- index.xhtml +-- style.css +-- txt    +-- Scripting_Tools    +-- Editors.txt    +-- Other.txt Examples of path: ../txt/Scripting_Tools/Editors.txt ../txt/Scripting_Tools/Other.txt Well I'm a new user, so I can't "answer" my own question, so I'll just post it here: After asking for help on a IRC chat channel specific to jQuery, I was told I could use this on a local host. To do this I installed Apache web server, and copied my site into it's directory. More information on setting it up can be found here: http://www.howtoforge.com/ubuntu_debian_lamp_server Then to run the site I navigated my browser to "localhost" and everything works.

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• Installing Skype on 12.04 64 bit causes errors

  - by Wolfy87

  Hi there I am trying to install Skype through apt-get but I am having some trouble. The Skype package depends on skype-bin which is not found in my list of packages. So when trying to install Skype I get the following error. $ sudo apt-get install skype 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: skype : Depends: skype-bin but it is not installable E: Unable to correct problems, you have held broken packages. Does anyone know why this might happen? Am I missing a repository? I get similar results when downloading the .deb from their site. But it complains about ai32-libs not being installable. This is because it depends on another package that does not exist in my list. Please bear in mind that this is a custom install from the company I work for. They have secured it and I think they have updated it over time and skipped versions, possibly breaking things.

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• Earmarks of a Professional PHP Programmer

  - by Scotty C.

  I'm a 19 year old student who really REALLY enjoys programming, and I'm hoping to glean from your years of experience here. At present, I'm studying PHP every chance I get, and have been for about 3 years, although I've never taken any formal classes. I'd love to some day be a programmer full time, and make a good career of it. My question to you is this: What do you consider to be the earmarks or traits of a professional programmer? Mainly in the field of PHP, but other, more generalized qualifications are also more than welcome, as I think PHP is more of a hobbyist language and may not be the language of choice in the eyes of potential employers. Please correct me if I'm wrong. Above all, I don't want to wast time on something that isn't worth while. I'm currently feeling pretty confident in my knowledge of PHP as a language, and I know that I could build just about anything I need and have it "work", but I feel sorely lacking in design concepts and code structure. I can even write object oriented code, but in my personal opinion, that isn't worth a hill of beans if it isn't organized well. For this reason, I bought Matt Zandstra's book "PHP Objects, Patterns, and Practice" and have been reading that a little every day. Anyway, I'm starting to digress a little here, so back to the original question. What advice would you give to an aspiring programmer who wants to make an impact in this field? Also, on a side note, I've been working on a project with a friend of mine that would give a fairly good idea of where I'm at coding wise. I'm gonna give a link, I don't want anyone to feel as though I'm pushing or spamming here, so don't click it if you don't want to. But if you are interested on giving some feedback there as well, you can see the code on github. I'm known as The Craw there. https://github.com/PureChat/PureChat--Beta-/tree/

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• Can't install Skype on Ubuntu 12.04 64 bit

  - by Gabriel Alvim

  I've tried many different ways: I downloaded the file on the Skype website, which returned me this error "Cannot install ia-32-libs" I followed this instructions https://help.ubuntu.com/community/Skype and here is what I got: **W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/Packages/binary-amd64/Packages 404 Not Found [IP: 91.189.92.191 80] W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/Packages/binary-i386/Packages 404 Not Found [IP: 91.189.92.191 80] E: Some index files failed to download. They have been ignored, or old ones used instead.** I even tried this command line: sudo apt-get install lib32stdc++6 lib32asound2 ia32-libs libc6-i386 lib32gcc1 skype And this is what I got: **Error: need a repository as argument pandora@ubuntu:~$ sudo apt-get install lib32stdc++6 lib32asound2 ia32-libs libc6-i386 lib32gcc1 skype 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 skype : Depends: skype-bin E: Unable to correct problems, you have held broken packages.** I just don't know what to do anymore, if I can't use skype, I might as well not use ubuntu at all. Please, someone help

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• What kind of physics to choose for our arcade 3D MMO?

  - by Nick

  We're creating an action MMO using Three.js (WebGL) with an arcadish feel, and implementing physics for it has been a pain in the butt. Our game has a terrain where the character will walk on, and in the future 3D objects (a house, a tree, etc) that will have collisions. In terms of complexity, the physics engine should be like World of Warcraft. We don't need friction, bouncing behaviour or anything more complex like joints, etc. Just gravity. I have managed to implement terrain physics so far by casting a ray downwards, but it does not take into account possible 3D objects. Note that these 3D objects need to have convex collisions, so our artists create a 3D house and the player can walk inside but can't walk through the walls. How do I implement proper collision detection with 3D objects like in World of Warcraft? Do I need an advanced physics engine? I read about Physijs which looks cool, but I fear that it may be overkill to implement that for our game. Also, how does WoW do it? Do they have a separate raycasting system for the terrain? Or do they treat the terrain like any other convex mesh? A screenshot of our game so far:

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• how to create a mirror of minimum size to install Ubuntu

  - by Registered User

  I need to create an http url at my laptop to have a Ubuntu installation begin within my laptop on a Xen environment. This is how the final thing will look like http://bderzhavets.wordpress.com/2008/10/28/install-ubuntu-intrepid-server-pv-domu-at-xen-33-port-via-httpgetco-centos-52-dom0/ the host and client are both going to be my laptop, I Google d and came across apt-mirror and some other packages. I do not want to archive entire 15 GB Ubuntu repositories on my machine. It is not possible to use a CD,ISO,loop mounted disk (reason mentioned below). I have tried using netboot image on local machine which failed because if you are attempting to create a virtual machine on a hardware which does not support VT virt-manager installer necessarily needs a URL of this sort http://archive.ubuntu.com/ubuntu/dists/hardy/main/installer-i386/current/images/netboot/ any other option to create guest OS is simply grayed out. The unfortunate part is my Ethernet connections do not work when I boot with Xen-4.0 and a pv-ops Dom0 kernel from Jeremy's tree.Which is where I have to do this work.So I have to create a URL structure which is similar to Ubuntu mirrors.So how can I do this in bare minimum so that at least the console boots and once the console comes I can do some work.

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• Problem inserting pre-ordered values to quadtree

  - by Lucas Corrêa Feijó

  There's this string containing B, W and G (standing for black, white and gray). It defines the pre-ordered path of the quadtree I want to build. I wrote this method for filling the QuadTree class I also wrote but it doesn't work, it inserts correctly until it reaches a point in the algorithm it needs to "return". I use math quadrants convention order for insertion, such as northeast, northwest, southwest and southeast. A quadtree has all it's leafs black or white and all the other nodes gray The node used in the tree is called Node4T and has a char as data and 4 references to other nodes like itself, called, respectively NE, NW, SW, SE. public void insert(char val) { if(root==null) { root = new Node4T(val); } else { insert(root, val); } } public void insert(Node4T n, char c) { if(n.data=='G') // possible to insert { if(n.NE==null) { n.NE = new Node4T(c); return; } else { insert(n.NE,c); } if(n.NW==null) { n.NW = new Node4T(c); return; } else { insert(n.NW,c); } if(n.SW==null) { n.SW = new Node4T(c); return; } else { insert(n.SW,c); } if(n.SE==null) { n.SE = new Node4T(c); return; } else { insert(n.SE,c); } } else // impossible to insert { } } The input "GWGGWBWBGBWBWGWBWBWGGWBWBWGWBWBGBWBWGWWWB" is given a char at a time to the insert method and then the print method is called, pre-ordered, and the result is "GWGGWBWBWBWGWBWBW". How do I make it import the string correctly? Ignore the string reading process, suppose the method is called and it has to do it's job.

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• Problem with dpkg-preconfigure, how to correct?

  - by Eric Wilson

  I was trying to install TeamViewer, and I followed the instructions here even though they specify 11.10 instead of 12.04 (what I'm running). In particular, I executed. $ wget http://www.teamviewer.com/download/teamviewer_linux.deb $ sudo dpkg -i teamviewer_linux.deb The dpkg command failed, and after this point my packaging system has been broken. The software center instructs me to try: $ sudo apt-get -f install which leads to Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: teamviewer7:i386 0 upgraded, 0 newly installed, 1 to remove and 17 not upgraded. 9 not fully installed or removed. Need to get 89.0 kB of archives. After this operation, 81.9 MB disk space will be freed. Do you want to continue [Y/n]? y Get:1 http://us.archive.ubuntu.com/ubuntu/ precise/main dash amd64 0.5.7-2ubuntu2 [89.0 kB] Fetched 89.0 kB in 1s (83.9 kB/s) E: Sub-process /usr/sbin/dpkg-preconfigure --apt || true returned an error code (100) E: Failure running script /usr/sbin/dpkg-preconfigure --apt || true At this point I'm stumped.

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• when I type apt-get -f install, I get the error message

  - by gene

  xserver-xorg-core (2:1.11.4-0ubuntu10.8) breaks xserver-xorg-video-5 and is installed. Also I can not upgrade my software, It said that the package system is broken, with detail information: The following packages have unmet dependencies: xserver-xorg-core: Depends: xserver-common (>= 2:1.11.4-0ubuntu10.8) but 2:1.11.4-0ubuntu10.8 is installed when I issue sudo apt-get update, the output seems fine the source is(sorry the output has too many links that I can not post in);http://archive.ubuntu.com Reading package lists... Done ====================== when I issue sudo apt-get dist-upgrade, the output is: 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: xserver-xorg-core : Breaks: xserver-xorg-video-5 E: Unmet dependencies. Try using -f. ================== when I issue 'sudo apt-get -f install', the output is: dpkg: dependency problems prevent configuration of xserver-xorg-video-radeon: xserver-xorg-core (2:1.11.4-0ubuntu10.8) breaks xserver-xorg-video-5 and is installed. xserver-xorg-video-radeon (1:6.12.1-0ubuntu2) provides xserver-xorg-video-5. dpkg: error processing xserver-xorg-video-radeon (--configure):dependency problems leaving unconfigured No apport report written because the error message indicates its a followup error from a previous failure. Errors were encountered while processing: xserver-xorg-video-radeon E: Sub-process /usr/bin/dpkg returned an error code (1)

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• Why do the GNOME symbolic icons appear darker in a running application?

  - by David Planella

  I'm creating an application that uses symbolic icons from the default theme. However, there are a few icons that I need that cannot be represented by those from the default theme, so I'm creating my own ones. What I did was to simply go to /usr/share/icons/gnome/scalable/actions/, copied a few locally into my app's source tree that could serve as a basis, and started editing them. So far so good. But I've noticed the following: all symbolic icons are of a light grey color when looking at the original .svg file, but when they are put onto a widget, they become darker. Here's an example, using the /usr/share/icons/gnome/scalable/actions/view-refresh-symbolic.svg icon from the default theme: Here's what it looks like when opening the original with Inkscape: And here's what it looks like on a toolbar on a running application: Notice the icon being much darker at runtime. That happens both with the Ambiance and Radiance themes. I wouldn't mind much, but I noticed it affects my custom icon, whereby parts of it become darker (the inner fill), whereas parts of it remain the same color as the original (the stroke). So what causes the default symbolic icons to darken and how should implement that for my custom icons?

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• How to install Gyachi on ubuntu 12.10

  - by Oguz Can Sertel

  I would like to use Gyachi on ubuntu 12.10. I tried these steps but it doesn't work.. I wanted to compile it myself... but it need some libs... it made me confused... so I gave up sudo add-apt-repository ppa:adilson/experimental sudo apt-get update sudo apt-get install gyachi Thank you for your helps at first command the output: sudo add-apt-repository ppa:adilson/experimental You are about to add the following PPA to your system: Contains packages that are not in the official Debian/Ubuntu repositories and newer versions and snapshots which are not available yet in the repositories. Theses packages are experimental. Use them at your own risk. More info: https://launchpad.net/~adilson/+archive/experimental Press [ENTER] to continue or ctrl-c to cancel adding it gpg: keyring `/tmp/tmp3y3i7p/secring.gpg' created gpg: keyring `/tmp/tmp3y3i7p/pubring.gpg' created gpg: requesting key 27B81625 from hkp server keyserver.ubuntu.com gpg: /tmp/tmp3y3i7p/trustdb.gpg: trustdb created gpg: key 27B81625: public key "Launchpad Experimental Packages PPA" imported gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) OK and after sudo apt-get update; this is (sudo apt-get install gyachi)'s output here is the output: sudo apt-get install gyachi Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package gyachi

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• Boolean checks with a single quadtree, or multiple quadtrees?

  - by Djentleman

  I'm currently developing a 2D sidescrolling shooter game for PC (think metroidvania but with a lot more happening at once). Using XNA. I'm utilising quadtrees for my spatial partitioning system. All objects will be encompassed by standard bounding geometry (box or sphere) with possible pixel-perfect collision detection implemented after geometry collision (depends on how optimised I can get it). These are my collision scenarios, with < representing object overlap (multiplayer co-op is the reason for the player<player scenario): Collision scenarios (true = collision occurs): Player <> Player = false Enemy <> Enemy = false Player <> Enemy = true PlayerBullet <> Enemy = true PlayerBullet <> Player = false PlayerBullet <> EnemyBullet = true PlayerBullet <> PlayerBullet = false EnemyBullet <> Player = true EnemyBullet <> Enemy = false EnemyBullet <> EnemyBullet = false Player <> Environment = true Enemy <> Environment = true PlayerBullet <> Environment = true EnemyBullet <> Environment = true Going off this information and the fact that were will likely be several hundred objects rendering on-screen at any given time, my question is as follows: Which method is likely to be the most efficient/optimised and why: Using a single quadtree with boolean checks for collision between the different types of objects. Using three quadtrees at once (player, enemy, environment), only testing the player and enemy trees against each other while testing both the player and enemy trees against the environment tree.

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• Get 100 highest numbers from an infinite list

  - by Sachin Shanbhag

  One of my friend was asked this interview question - "There is a constant flow of numbers coming in from some infinite list of numbers out of which you need to maintain a datastructure as to return the top 100 highest numbers at any given point of time. Assume all the numbers are whole numbers only." This is simple, you need to keep a sorted list in descending order and keep a track on lowest number in that list. If new number obtained is greater than that lowest number then you have to remove that lowest number and insert the new number in sorted list as required. Then question was extended - "Can you make sure that the Order for insertion should be O(1)? Is it possible?" As far as I knew, even if you add a new number to list and sort it again using any sort algorithm, it would by best be O(logn) for quicksort (I think). So my friend told it was not possible. But he was not convinced, he asked to maintain any other data structure rather than a list. I thought of balanced Binary tree, but even there you will not get the insertion with order of 1. So the same question I have too now. Wanted to know if there is any such data structure which can do insertion in Order of 1 for above problem or it is not possible at all.

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• Software Installation Failure!

  - by NIKOS ANTONIOU

  I get the same error whenever I try to install software on my laptop, for example: I want to install Pavucontrol. So, I open the terminal and I type sudo apt-get install pavucontrol and my terminal output is: Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libgconfmm-2.6-1c2 libglademm-2.4-1c2a libpulse-mainloop-glib0 padevchooser paman paprefs pavumeter pulseaudio-module-zeroconf The following NEW packages will be installed: libgconfmm-2.6-1c2 libglademm-2.4-1c2a libpulse-mainloop-glib0 padevchooser paman paprefs pavucontrol pavumeter pulseaudio-module-zeroconf 0 upgraded, 9 newly installed, 0 to remove and 172 not upgraded. 1 not fully installed or removed. Need to get 0B/345kB of archives. After this operation, 2044kB of additional disk space will be used. Do you want to continue [Y/n]? Y perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "el_GR.UTF-8" are supported and installed on your system. perl: warning: Falling back to the standard locale ("C"). Can't exec "locale": No such file or directory at /usr/share/perl5/Debconf/Encoding.pm line 16. Use of uninitialized value $Debconf::Encoding::charmap in scalar chomp at /usr/share/perl5/Debconf/Encoding.pm line 17. dpkg: `ldconfig' not found on PATH. dpkg: 1 expected program(s) not found on PATH. NB: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin. E: Sub-process /usr/bin/dpkg returned an error code (2) What is the problem and how do I fix it?

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• What went wrong with my curl install?

  - by Danjah

  I'm fresher than the prince to Linux, I've been following the instructions here: http://chrisfulstow.com/running-node-js-on-windows-with-virtualbox-and-ubuntu (the link tells what I am generally trying to do). I'm all up and running in VBox, and am at the curl install part, I may have done the curl part a week ago I forget. So I ran this command anyway: danjah@danjah-VirtualBox:~$ sudo apt-get install curl Result: [sudo] password for danjah: Reading package lists... Done Building dependency tree Reading state information... Done curl is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Then: $ curl http://npmjs.org/install.sh | sudo npm_install=rc sh Result: fetching: { gzip: stdin: unexpected end of file /bin/tar: Child returned status 1 /bin/tar: Error is not recoverable: exiting now It failed Should I be concerned? How can I test curl? How can I avoid these situations? Perhaps there's a generic way of checking to see if I've already installed packages/etc? Case specific answers and general advice most appreciated. cheers, d

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