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• Unable to locate essential development tools Ubuntu 11.04

  - by Anita 7

  I'm using Ubuntu 11.04 (VMware). I aim to implement OpenMP. Im using gcc 4.5 compiler. I tried to install it by using the command sudo apt-get install gcc 4.5. Afterwards I proceed with gcc -fopenmp foo.c BUT the output was: gcc: foo.c: No such file or directory gcc: no input files –. Now I tried to install the package by using : ubuntu@ubuntu:~$ sudo apt-get install essential Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package essential. I also tried apt-cache search essential and after that sudo apt-get install essential-dev But the same error again, E: Unable to locate package essential-dev Any solution,please? Do I need to download any package? What should I do? Thank you in advance :))

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• Unit testing a text index

  - by jplot

  Consider a text index such as a suffix tree or a suffix array supporting Count queries (number of occurrences of a pattern) and Locate queries (the positions of all the occurrences of a pattern) over a given text. How would you go about unit testing such a class ? What I have in mind is to generate a big random string then extract a random substring from this big string and compare the results of both queries with naive implementations (such as string::find). Another idea I have is to find the most frequent substring of length l appearing in the original string (using perhaps a naive method) and use these substrings for testing the index. This isn't the best way, so what would be a good design of the unit tests for a text index ? In case it matters, this is in C++ using google test.

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• What is best configuration settings for Wordpress and MySQL on Win2008 + IIS7 stack?

  - by holiveira

  I currently have four blogs that uses Wordpress running on a shared hosting company. This blogs have a considerable amount of visits and I'm constantly receiving warnings from the hosting company saying that I'm consuming too much server CPU. Considering the fact that I have a dedicated server in another company with plenty of idle resources (it has a quad core Xeon 2.5GHz and 8GB of Ram and run on Win2008) I'm planning to move the blogs to this server in order to have some more freedom. I'm currently using this server to host some web applications using ASP.Net and SQL Express. I've installed a blog to test and it worked fine, but some issues appeared and raised some questions in my mind: How to properly set the permissions in the folders used by wordpress plugins, I mean, what permissions should I set for the IIS_User in some folders so that the plugins works correctly? What's the best caching plugin to use considering this is a Window Server? In the previous hosting company I used the WPSuperCache, but it was a Linux Stack. Or should I ignore the caching plugins and use the Dynamic Caching Feature of IIS7? How can I optmize the MySQL server running in this server (specially the settings regarding memory and caching) How can I protect the admin folders against hacker attacks? I know some people will advice me not to run Wordpress in a Windows stack, but that's my only choice. I don't even know were to start managing and LAMP stack, don't have the time to do so nor the money to rent another server.

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• Cocos2d iOS A* Star Path finding help

  - by user32581

  Hello I need help implementing this class https://github.com/sqlboy/tiled-games/tree/master/src into my iOS game. Im using the suggested code of: AStarPathFinder pathFinder = [[AStarPathFinder alloc] initWithTileMap:tileMap collideLayer:@"collide"]; // Optionally, you can set the name of the collide property key and the value it expects. [pathFinder setCollideKey:@"collidable"] // defaults to COLLIDE [pathFinder setCollideValue:@"True"] // defaults to 1 // highlight a path (src and dst are tile coorindates) [pathFinder highlightPathFrom:srcTile to:dstTile]; // move a sprite [pathFinder moveSprite:player from:srcTile to:dstTile atSpeed:0.1f]; I get the following error: Instance method '-initWithTileMap:collideLayer:' not found (return defaults to 'id') This is the official post for the class: http://www.cocos2d-iphone.org/forums/topic/just-pushed-a-cctmxtiledmap-a-pathfinding-class-to-github/ The only other code I added was: #import "AStarPathFinder.h" I think I am perhaps missing something! I am grateful for any help!

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• Changing Wallpaper on 12.04 Login Screen

  - by userIsAMonkey

  I'm using this link but seems to be not working on 12.04, here's the Terminal message below: Are there other softwares/tips for changing the login screen? I'm also using link but seems outdated. Failed to fetch http://ppa.launchpad.net/claudiocn/slm/ubuntu/dists/precise/main/source/Sources 404 Not Found W: Failed to fetch http://ppa.launchpad.net/claudiocn/slm/ubuntu/dists/precise/main/binary-amd64/Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/claudiocn/slm/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found E: Some index files failed to download. They have been ignored, or old ones used instead. law@ubuntu:~$ sudo apt-get install simple-lightdm-manager Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package simple-lightdm-manager

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• Is there an apt command to download a deb file from the repositories to the current directory?

  - by Lekensteyn

  I am often interested in the installation triggers (postinst, postrm) or certain parts of packages (like /usr/share and /etc). Currently, I am running the next command to retrieve the source code: apt-get source [package-name] The downside is, this file is often much bigger than the binary package and does not reflect the installation tree. Right now, I am downloading the packages through http://packages.ubuntu.com/: Search for [package-name] Select the package Click on amd64/i386 for download Download the actual file This takes too long for me and as someone who really likes the shell, I would like to do something like the next (imaginary) command: apt-get get-deb-file [package-name] I could not find something like this in the apt-get manual page. The most close I found was the --download-only switch, but this puts the package in /var/cache/apt/archives (which requires root permissions) and not in the current directory.

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• What is the good way of sharing specific data between ViewModels

  - by voroninp

  We have IAppContext which is injected into ViewModel. This service contains shared data: global filters and other application wide properties. But there are cases when data is very specific. For example one VM implements Master and the second one - Details of selected tree item. Thus DetailsVm must know about the selected item and its changes. We can store this information either in IAppContext or inside each concerned VM. In both cases update notifications are sent via Messenger. I see pros and cons for any of the approaches and can not decide which one is better. 1st: + explicitly exposed shared proerties, easy to follow dependencies - IAppContxt becomes cluttered with very specific data. 2nd: the exact opposite of the first and more memory load due to data duplication. May be someone can offer design alternatives or tell that one of the variants is objectively superior to the other cause I miss something important?

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• securing communication between 2 Linux servers on local network for ports only they need access to

  - by gkdsp

  I have two Linux servers connected to each other via a cross-connect cable, forming a local network. One of the servers presents a DMZ for the other server (e.g. database server) that must be very secure. I'm restricting this question to communication between the two servers for ports that only need to be available to these servers (and no one else). Thus, communication between the two servers can be established by: (1) opening the required port(s) on both servers, and authenticating according to the applications' rules. (2) disabling IP Tables associated with the NIC cards the cross-connect cable is attached to (on both servers). Which method is more secure? In the first case, the needed ports are open to the external world, but protected by user name and password. In the second case, none of the needed ports are open to the outside world, but since the IP Tables are disabled for the NIC cards associated with the cross-connect cables, essentially all of the ports may be considered to be "open" between the two servers (and so if the server creating the DMZ is compromized, the hacker on the DMZ server could view all ports open using the cross-connect cable). Any conventional wisdom how to make the communication secure between two servers for ports only these servers need access to?

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• (12.04 vm/server) Dist-upgrade to 3.2.0-63 wants to remove git (1.9.2) and git-core - is that the correct behavior?

  - by YellowShark

  was wondering if anyone knows dist-upgrade wants to remove git. FWIW, this is a pretty simple box, mainly used for web dev. $ uname -a Linux precise64 3.2.0-61-generic #93-Ubuntu SMP Fri May 2 21:31:50 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux $ git --version git version 1.9.2 $ sudo apt-get dist-upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages will be REMOVED: git git-core The following NEW packages will be installed: linux-headers-3.2.0-63 linux-headers-3.2.0-63-generic linux-image-3.2.0-63-generic The following packages will be upgraded: git-man linux-headers-server linux-image-server linux-server phpmyadmin 5 upgraded, 3 newly installed, 2 to remove and 0 not upgraded. Need to get 58.8 MB of archives. After this operation, 199 MB of additional disk space will be used. Do you want to continue [Y/n]?

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• Urgent: how to deny read access to a ExecCGI directory

  - by Malvolio

  First, I can't believe that that isn't the default behavior. Second, yikes! I don't know how long my code's been hanging out there, with all sort of cool secret stuff, just waiting for some hacker who knows Apache better than I do. EDIT (and apology) Well, this is sort of embarrassing. Here's what happened: We had some Python scripts available to the web, at /aux/file.py, which were not surprisingly at /var/www/http/aux . Separately, we were running an app server and Apache proxies through at /servlets/. A contractor had constructed the WAR file by bundling up all the generated files including the Python files (which are in a directory also called aux, not surprisingly), so if you typed in /servlets/aux/file.py, the web-server would ask the app-server for it and the app-server would just supply the file. It was the latter URL that this morning I happened to type in by accident and lo, the source appeared. Until I realized the shear unlikelihood of what I had done, the situation was rating about 8.3 on the sphincter scale. After a tense half-hour or so I realized that it had nothing to do with the CGI (and that serving files that were also executable would be not only foolish but also impossible), and was able to address the real problems. So -- sorry, everybody. Let the scorn-fest commence.

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• Unable to install Skype on 12.10 64bit

  - by Nidhin

  I am receiving the following message while I am trying to install Skype: nidhin@ubuntu:~$ sudo apt-get update nidhin@ubuntu:~$ 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 How can I fix this?

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• How to specify ingredients in Schema.org (other than recipes or drugs)?

  - by guillem

  I'd like to use Schema.org for a series of product specs pages. The products are cosmetics (shampoos, creams, etc.) and ideally an INCI declaration will be included for every product. I'd like to use Schema.org in the declaration, but I cannot find a suitable category in Schema.org. Ingredients is meant for cooking recipes, and ActiveIngredient for (medical) drugs and dietary supplements. Did I overlook some part of the tree? Any ideas for a workaround? Or am I trying to do something out of scope?

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• Unable to install cedarview-graphics-drivers

  - by antnchv

  $ sudo apt-get install cedarview-graphics-drivers 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: cedarview-graphics-drivers : Depends: xserver-xorg-core (= 2:1.10.99.901) Depends: xorg-video-abi-11 E: Unable to correct problems, you have held broken packages. Please advice.

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• Unable to install monodevelop

  - by ?. ???????????

  cyborg@CyBorg:~$ sudo apt-get install monodevelop 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: monodevelop : Depends: libmetacity-private0 (>= 1:2.26.0) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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• Upgrade to 11.10 left me with Kmail not working

  - by user86186

  On my way from 10.10 to 12.04 I chose to do the step by step (11.04 then 11.10 then 12.04) because I could not figure if I should do that or a direct install of 12.04LTS. After the first step (11.04) all was well. The next day I upgraded to 11.10. Now I seem to have lost my data in KOrganizer and all of my email history in KMail. KMail still has my email accounts but my tree structure of folders is missing as is all of the emails that should be there. Also, when KMail opens I get the following: KMail encountered a fatal error and will terminate now. The error was: Failed to fetch the resource collection. Clicking OK closes KMail. KAlarm appears OK and my browser history is still in place as are various data files. What to do??

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• Missing shared library for Rhythmbox

  - by user1450120

  After I upgraded from 13.04 to 13.10 my rhythmbox wouldn't work. After many failed attempts I ended up uninstalling and removing all traces of rhythmbox I could find. Now I've reinstalled rhythmbox, and am getting the error rhythmbox: error while loading shared libraries: librhythmbox-core.so.7: cannot open shared object file: No such file or directory I've tried sudo apt-get install librhythmbox* Only to get Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'librhythmbox-core5' for regex 'librhythmbox*' Note, selecting 'librhythmbox-core6' for regex 'librhythmbox*' Note, selecting 'librhythmbox-core7' for regex 'librhythmbox*' librhythmbox-core7 is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded. Any ideas on how to get rhythmbox back to a working state?

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• Browser: Randomly Opens Pages in New Windows Without Reason?

  - by Mark R

  This is a very strange thing I've noticed on my computer and past computers over this past year or more. I know when page are meant to open in a new Window and know which settings to use on my browser for this. But on both my browsers Chrome and Firefox, I have this really strange issue. I'm starting to think it's a hacker. When I right click links and select Open Link in New Tab, sometimes they will randomly open in a new window and today it is happening a lot. Like lots and lots. I'm getting really creeped out by it and YES I understand when a link opens in a new window and when it isn't supposed to. And none of these links are meant to open in a new Window. Let me give you an example: I searched Google about my issue and clicked on the result that I thought good. It opened in a new tab but half way through loading in new tab it opens into a new window. Recently, I decided to record my screen and while recording my screen using Camtasia, the issue stops. When I stop recording it starts again, as if it's a human operated issue. VERY strange. This has been going on for months on my old and new computer and on both Firefox and Chrome. Is there something I can do to fix this intermittent problem?

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• apt-get upgrade E: Sub-process /usr/bin/dpkg returned an error code (1)

  - by user292425

  When I typed apt-get install upgrade, I got error: Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? y Setting up linux-netizen (1.0.1-1) ... chrome: no process found dpkg: error processing linux-netizen (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: linux-netizen E: Sub-process /usr/bin/dpkg returned an error code (1) So I tried some method to fix it: sudo apt-get install -f and sudo apt-get install --configure -a But all methods are not working. Please help me....

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• Can't install Wine on 12.04 x64

  - by John

  I can't get Wine to install, it keeps say there are unmet dependencies. sudo apt-get install wine 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: wine1.5 but it is not going to be installed E: Unable to correct problems, you have held broken packages. This is a fresh install.

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• Can't get packages after installing Faience

  - by ccrama

  I installed the Faience theme (sudo apt-get install Faience) and it installed fine. Then I tried installing another package and it said 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: faience : Depends: faenza but it is not going to be installed gnome-shell-extensions-user-theme : Depends: gnome-shell-extensions-common but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). Please help :O!

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• Implement an FTP server (no threads) - how to start?

  - by ironicaldiction

  As a semester project, I have the following specification: Write a simple single threaded ftp server. The ftp server is configurable from a configuration file. The config allows to set the interface (where the server listens), the roots of the served content, transfer log, and database of users and its passwords. The server allows to create a virtual filesystem. By a virtual filesystem, we mean a mapping of a served directory to the real directory on the filesystem. For example, the client tree will look like: /home/user1 maps to /mnt/x/home/user1 /www maps to /var/cache/www /home/user_list.txt maps to /var/ftpclient/user_list.txt The user will see /home/user1 directory and /www directory and the file /home/user_list.txt The course is in C++. The projects to this point have provided a lot of structure, such as a class header file to get you started on the program. My question is this: how can I get started on what seems like quite a massive project (I have 3 weeks to return a working implementation)?

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• Release Notes for 4/12/2012

  Here are the notes for this week’s release: Fixed an issue where users could not expand a particular subfolder in the ASP.NET source code tree. Fixed an issue where incorrect Git branches would appear in the branch selection dropdown on the source control page. Fixed an issue where colons would appear HTML encoded in users’ activity feed.. Have ideas on how to improve CodePlex? Visit our ideas page! Vote for your favorite ideas or submit a new one. Got Twitter? Follow us and keep apprised of the latest releases and service status at @codeplex.

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• installing wine

  - by supreeth

  hey friends i tried my level best to install Wine but it is giving me some unresolved dependency something like 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: wine1.5 : Depends: wine1.5-i386 (= 1.5.15-0ubuntu1) but it is not installable E: Unable to correct problems, you have held broken packages. CAN ANYBODY PLS HELP ME HOW TO INSTALL IT............??? I AM USING UBUNTU-12.10 VERSION AMD-64...

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• Release Notes for 8/23/2012

  Below are the release notes from today's deployment. Improved the inline diff load performance for large diff sets Fixed a few issues related to sending and saving comments within a Pull Request Improved stability of the notification service Fixed an issue when directly linking to a file in the source browser, selected file was not being shown in the tree view Have ideas on how to improve CodePlex? Please visit our suggestions page! Vote for existing ideas or submit a new one. As always you can reach out to the CodePlex team on Twitter @codeplex or reach me directly @mgroves84

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• Unable to upgrade 11.04 to 11.10

  - by Kasi

  I have Ubuntu 11.04 installed in my laptop and tried to upgrade it by opening the update manager and and making the necessary settings in settings - updates - release upgrade - normal releases and then hitting the check button. But nothing appeared indicating later version is available to be upgraded. When I run the following sudo apt-get dist-upgrade below is the result that appeared. Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Also I am unable to watch YouTube videos in the Firefox 15.0 in my Ubuntu 11.04.

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