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how to remove update repo that always fails

- by David M. Karr

A week or so ago I tried to add a new package repo that supposedly had a package I wanted. Unfortunately, the information about it was out of date, and I found that it fails to connect to it each time. I'd like to just remove the new repo, but I'm not sure how to do that. For context, when I update, I get this: W:Failed to fetch http://ppa.launchpad.net/geod/ppa-geod/ubuntu/dists/precise/main/source/Sources 404 Not Found [IP: 135.214.42.30 8080] , W:Failed to fetch http://ppa.launchpad.net/geod/ppa-geod/ubuntu/dists/precise/main/binary-amd64/Packages 404 Not Found [IP: 135.214.42.30 8080] , W:Failed to fetch http://ppa.launchpad.net/geod/ppa-geod/ubuntu/dists/precise/main/binary-i386/Packages 404 Not Found [IP: 135.214.42.30 8080] , E:Some index files failed to download. They have been ignored, or old ones used instead.

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Choose at GRUB menu whether NVidia driver should be used

- by RobinJ

For some games, I need the nvidia-current driver, but when it's enabled, I can't get my work done as it messes up everything. So is there a way I can get two options in my GRUB menu? One wich will load my operating system with the nvidia-current drivers, and one which will use the default non-proprietary one? It seems a bit stupid to me to have 2 Ubuntu installations (one for games, one for the rest). But I can't get my daily work done with the Nvidia drivers enabled as it messes up some applications, randomly freezes the system, etc. But I still want to be able to play some games. If there's a way to just load and unload the nvidia-current driver with a script or something, that would also be welcome.

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How Did we get from CLI to Graphics?

- by Nathaniel Bennett

I'm confused when looking into graphics - specifically with operating systems. I mean, how can a computer render a CLI/console along with a GUI. GUI's are completely different from Text. and How Can we have GUI windows that Display Text interfaces, ie how can we have CLI in modern Graphics Operating system - that's what I'm mainly trying to grip on to. How Do Graphic's get rendered to display? is there some sort of memory address that a GPU access which holds all pixel data, and there system's within OS's that Gather the pixel position of Windows and Widgets, along with the Z Index and rasterize them to that memory address, which then the GPU loads to the screen? How About the CLI's integrated with Graphics? how does the OS Tell the GPU that a certain part of the screen wants to display text while the rest, whats to display pixel data? it's all very confusing. Shed some light in it, will ya?

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Pre-Loading von Tabellen in 11g

- by Ulrike Schwinn (DBA Community)

Tabellen und Indizes in den Cache zu laden, damit möglichst wenig I/O durchgeführt wird, ist eine häufig anzutreffende Anforderung. Diese Technik nennt man auch Pre-Loading oder Pre-Caching von Datenbank Objekten. Die Durchführung ist dabei sehr einfach. Gleich zu Beginn werden spezielle SQL Statements wie SELECT Statements mit Full Table Scan oder Index Scan durchgeführt, damit die entsprechenden Objekte vollständig in den Cache geladen werden können. Besonders interessant ist dieser Aspekt auch im Zusammenhang mit der Erstellung von Testumgebungen. Falls beispielsweise kein Warmup möglich ist, kann man bevor der eigentliche Test durchgeführt wird, bestimmte Tabellen und Indizes mit dieser Technik vorab in den Buffer Cache laden. Der folgende Artikel zeigt wie man eine Tabelle in 11g in den Buffer Cache laden kann und gibt Tipps zur Durchführung.

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Fast set indexing data structure for superset retrieval

- by Asterios

I am given a set of sets: {{a,b}, {a,b,c}, {a,c}, {a,c,f}} I would like to have a data structure to index those sets such that the following "lookup" is executed fast: find all supersets of a given set. For example, given the set {a,c} the structure would return {{a,b,c}, {a,c,f}, {a,c}} but not {a,b}. Any suggestions? Could this be done with a smart trie-like data structure storing sets after a proper sorting? This data structures is going to be queried a lot. Thus, I'm searching for a structure that might be expensive in build but rather fast to query.

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VSDB to SSDT Series : Introduction

- by Etienne Giust

At the office, we extensively use VS2010 SQL Server 2008 Database Projects and SQL Server 2008 Server Projects in our Visual Studio 2010 solutions. With Visual Studio 2012, those types of projects are replaced by the SQL Server Database Project using the SSDT (SQL Server Data Tools) technology. I started investigating the shift from Visual Studio 2010 to Visual Studio 2012 and specifically what needs to be done concerning those database projects in terms of painless migration, continuous integration and standalone deployment. I will write my findings in a series of 4 short articles: Part 1 will be about the database projects migration process and the cleaning up that ensues Part 2 will be about creating SQL Server 2008 Server Projects equivalents with the new SSDT project type Part 3 will introduce a replacement to the vsdbcmd.exe command used for deployment in our continuous integration process Part 4 will explain how to create standalone packages of SSDT projects for deployment on non accessible servers (such as a production server)

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What is 'lack of original content'?

- by JVerstry

It is written everywhere that lack of original content is has a negative impact on ranking. But what is lack of original content? (I am not talking about duplicate content) I guess if you copy other site's content, this makes sense. But, assuming one develops its own functionalities, but similar functionalities are already available on other sites, is this considered lack of original content? Can Google decide to not index such pages (i.e., not give them a chance at all)? Are there other definition of 'lack of original content'?

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Specs, Form and Function – What am I Missing?

- by Barry Shulam

0 0 1 628 3586 08041 29 8 4206 14.0 Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin;} Friday October 26th the Microsoft Surface RT arrived at the office. I was summoned to my boss’s office for the grand unpacking. If I had planned ahead I could have used my iPhone 4 to film the event and post it on YouTube however the desire to hold the device and turn it ON was more inviting than becoming a proxy reviewer for Engadget’s website. 1980 was the first time we had a personal computer in our house. It was a Kaypro computer. It weighed 29 pounds more than any persons lap could hold. Then the term “portable computer” meant you could remove it from the building and take it else where. Today I am typing on this entry on a Macbook Air which weighs 2.38 pounds. This morning Amazons front page main title is: “Much More for Much Less” I was born at the right time to start with the CPM operating system on the Kaypro thru the DOS, Windows, Linux, Mac OSX and mobile phone operating systems and languages. If you are not aware Technology is moving at a rapid pace. The New iPad (those who are keeping score – iPad4) is replacing a 7 month old machine the New iPad (iPad 3) I have used and owned many technology devices in my life. The main point that most of the reader who are in the USA overlook is the fact that we are in the USA. The devices we purchase have a great digital garden to support them. The Kaypro computer had a 7-inch screen. It was a TV tube with two colors – Black and Green. You could see the 80-column screen flicker with characters – have you every played Pac-Man emulated on the screen with the ABC characters. Traveling across the world you will find that not all apps on your device will function as they did back home because they are not offered outside of your country of origin. I think the main question a buyer of technology should be asking is Function. The greatest Specs with out function limit you. The most beautiful form with out function is the same as a crystal vase on your shelf – not a good cereal bowl in the morning. Microsoft Surface RT, Amazon Kindle Fire and Apple iPad all great devices in their respective customers hands. My advice for those looking to purchase on this year: If the device is your only technology device you buy what you WANT and LIKE. Consider this parallel universe if its not your only device? Ever go shopping for clothing, shoes, and accessories with your wife, girlfriend, sister or mother? If you listen carefully you will hear the little voices coming out of there heads saying: “This goes well with that and I can use it also with that outfit” ”Do you think this clashes with that?” “Ohh I love how that combination looks on you”. Portable devices such as tablets and computers can offer a whole lot more when they are combined with the digital echo system you have at home and the manufacturer offers online. Pros of each Device: Microsoft Surface RT: There is a new functionality named SmartGlass which will let you share the content off your tablet to your XBOX 360. Microsoft office is loaded on the tablet. You can have more than one user profile on the tablet if you share it with others. Amazon Kindle or Kindle HD: If you are an Amazon consumer with an annual Amazon Prime service you can consume videos and read books off the Amazon site. Its the cheapest device. Its a step up from the kindle reader in many ways. Apple Ipad or Ipad mini: Over 270 Thousand applications. Airplay permits you the ability to share to your TV screen. If you are a cord cutter (a person who gets their entertainment content over the web or air vs Cable Providers) the Airplay or Smart glass are a huge bonus. iPad mini or not: The mini will fit in a purse where the larger one will not. Its lighter which makes it nice to hold for prolonged periods. It has an option for LTE wireless which non of the other sub 9 inch tables offer. The screen is non retina which means the applications are smaller. Speaking with individuals who are above 50 in age that wear glasses they retina does not make a difference for them however they prefer the larger iPad over the new mini. Happy Shopping this Channuka Season. The Kosher Coder. Follow me on twitter @KosherCoder

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What is the benefit of writing to a temp location, And then copying it to the intended destination?

- by Devdatta Tengshe

I am writing an application that works with satellite Images, and my boss asked me to look at some of the commercial application, and see how they behave. I found a strange behavior and then as I was looking, I found it in other standard applications as well. These Programs first write to the temp folder, and then copy it to the intended destination. Example: 7zip first extracts to the temp folder, and then copies the extracted data to the location that you had asked it to extract the data to. I see several problems with this approach: 1.The temp folder might not have enough space, while the intended location might have that much space. 2.If it is a large file, it can take a non-negligible amount of time for the copy operation. I thought about it a lot, but I couldn't see one single positive point to doing this. Am I missing something, or is there a real benefit to doing this?

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Flash Player et Acrobat Reader : vulnérabilité critique zero-day confirmée par Adobe, elle serait déjà exploitée

Flash Player et Acrobat Reader : vulnérabilité critique zero-day confirmée Des pirates l'auraient déjà exploitée Adobe tire la sonnette d'alarme. Une faille critique non corrigée dans son lecteur Flash Player serait déjà exploitée par des pirates. Selon un avis de sécurité qui vient d'être publié par l'éditeur, la vulnérabilité pourrait être exploitée par des pirates distants pour provoquer un crash de l'application ou, plus préoccupant, pour prendre le contrôle du système affecté en intégrant des fichiers Flash infectés dans un document Microsoft Excel envoyé en pièce jointe. La vulnérabilité aurait déjà été utilisée pour des attaques ciblées. La vulnérabilité touche égale...

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Project Euler 1: (Iron)Python

- by Ben Griswold

In my attempt to learn (Iron)Python out in the open, here’s my solution for Project Euler Problem 1. As always, any feedback is welcome. # Euler 1 # http://projecteuler.net/index.php?section=problems&id=1 # If we list all the natural numbers below 10 that are # multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of # these multiples is 23. Find the sum of all the multiples # of 3 or 5 below 1000. import time start = time.time() print sum([x for x in range(1000) if x % 3== 0 or x % 5== 0]) print "Elapsed Time:", (time.time() - start) * 1000, "millisecs" a=raw_input('Press return to continue') # Also cool def constraint(x): return x % 3 == 0 or x % 5 == 0 print sum(filter(constraint, range(1000)))

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OpenSSL installed, but Ruby unable to require it

- by uomoinverde

I'm trying to setup github-pages on my Ubuntu laptop, and following the guide provided by Github I have to install the bundler package; giving the command ~$ gem install bundler returns me this error. ERROR: While executing gem ... (Gem::Exception) Unable to require openssl, install OpenSSL and rebuild ruby (preferred) or use non-HTTPS sources Then I have installed OpenSSL, launched the command to update software and stuff and tried again to install bundler, but the error kept showing. How can I fix this? Is there any specific command to rebuild ruby making it aware about the fact that openSSL is now installed?

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Keep Google Analytics in a backup site or not?

- by Yannis Dran

I backed up my website and uploaded it to another server for testing and backup purposes. Should I remove the Google Analytics snippet from the index.php (which is for the real site), or does it not matter as it's not the same server and url address as the one declared at Google Analytics account? The reason I don't want to remove it is in case someone forgets about it if they upload the backup to the real site in case the real one breaks. Also I know that if I turn off the website there is no GA snippet, but I need it open so I can easily access and test it so I don't have to write pass all the time.

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Java Spotlight Episode 100: JavaOne 2012 Part 1

- by Roger Brinkley

An interview with Arun Gupta on Glassfish, Geertjan Wielenga on Netbeans, and 15 year JavaOne alumin Robert Treacy on events and happenings at JavaOne 2012. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link: Java Spotlight Podcast in iTunes. Show Notes Events Sep 30-Oct 4, JavaONE, San Francisco Oct 3-4, Java Embedded @ JavaONE, San Francisco Oct 15-17, JAX London Oct 30-Nov 1, Arm TechCon, Santa Clara Oct 22-23, Freescale Technology Forum - Japan, Tokyo Oct 31, JFall, Netherlands Nov 2-3, JMagreb, Morocco Nov 13-17, Devoxx, Belgium Feature InterviewGlassFish Community Event will be conducted on Sep 30, 11am - 1pm. This is a fantastic opportunity for GlassFish users to meet and engage with the GlassFish Team in a casual setting.http://glassfish-event12.eventbrite.com/ Netbeans eventshttp://netbeans.dzone.com/news/meet-experts-java-ee-javafx http://netbeans.org/community/articles/javaone/2012/netbeans-day-2012.html http://netbeans.org/community/articles/javaone/2012/index.html

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Web Developer Portfolio - Role Definition

- by GSTAR

I'm just putting together a portfolio that lists all the websites I have developed / worked on during the past year. Now this has become quite a long list - simply because 60% of the websites I have listed are ones where I have developed certain sections of the site, or maybe re-developed a certain section of an existing site - but not actually developed the whole site. So basically you could say I made a 20-50% contribution on those particular sites. I don't want to give the false impression to a potential employer that I have actually fully developed all the sites listed on my portfolio. Therefore I am after a neat way to indicate this fact. On the websites that I have fully developed, I have put a small label next to the name which reads "Lead Developer". What would be the equivalent label to put on the sites I have partially developed, or projects where I have been amongst multiple people developing? I suppose what I'm asking is, how would you define, in 2-3 words a non-lead developer role within a project?

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CAMeditor v1.9 – thoughts and reflections

- by david.webber(at)oracle.com

We recently published the latest iteration of the CAMeditor tool on Sourceforge.net including more enhancements to the NIEM capabilities. This release represented an incremental improvement over the prior version with mostly bug fixes and patches. We’re now working on the full v2.0 release which will feature substantial improvements and new features in practically all areas. Most importantly we are improving the dictionary handling and providing the ability to visually design new exchange schema directly from dictionary sets of components. In addition we are doing some interim release work on 1.9.x with patches and enhancements particularly to support running on Ubuntu and non-Windows platforms. And we are also providing an Ant script based deployment for the CAMV validation engine so you can do unit testing of batches of templates and XML instance samples using command line scripts. More updates will be forthcoming as we make early release versions available for testing purposes.

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Naming: objectAction or actionObject?

- by DocSalvage

The question, Stored procedure Naming conventions?, and Joel's excellent Making Wrong Code Look Wrong article come closest to addressing my question, but I'm looking for a more general set of criteria to use in deciding how to name modules containing code (classes, objects, methods, functions, widgets, or whatever). English (my only human language) is structured as action-object (i.e closeFile, openFile, saveFile) and since almost all computer languages are based on English, this is the most common convention. However, in trying to keep related code close together and still be able to find things, I've found object-action (i.e. fileClose, fileOpen, fileSave) to be very attractive. Quite a number of non-English human languages follow this structure as well. I doubt that one form is universally superior, but when should each be used in the pursuit of helping to make sure bad code looks bad?

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A little SQL tip for C# developers

- by MikeParks

The other day at work I came across a handy little block of SQL code from Jeremiah Clark's blog. It's pretty simple logic but through the mind of a C# developer making some quick DB updates, seems to me that it's more likely to end up writing out the code in Solution 1 instead of Solution 2 below to solve the problem. Basically, I needed to check and see if a specific record existed in Table1. If it does exist, then update that record, otherwise insert a new record into Table1. Solution 1: IF EXISTS (SELECT * FROM Table1 WHERE Column1='SomeValue') UPDATE Table1 SET (...) WHERE Column1='SomeValue' ELSE INSERT INTO Table1 VALUES (...) Solution 2: UPDATE Table1 SET (...) WHERE Column1='SomeValue' IF @@ROWCOUNT=0 INSERT INTO Table1 VALUES (...) As Jeremiah explains, they both accomplish the same thing but from a performance standpoint, Solution 2 is the better way to go (saved table/index scan). Just wanted to throw this small tip out there. Thanks! - Mike

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America The Vulnerable

- by Naresh Persaud

At the Executive Edge this week, Joel Brenner shared his perspective on the state of cyber-security. Today our most critical military and corporate secrets are under attack. In his presentation, Joel shared his perspective on how organizations can can better prepare for the changing security climate. The amount of state sponsored espionage has highlighted weaknesses in our national security infrastructure. The Internet was primarily intended to provide a means of collaboration for non-commercial entities. Today it is the backbone of our digital commerce and digital experience and it was not designed to secure the activities and data we share today. Check out "America The Vulnerable" and learn more.

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Software license restricting commercial usage like CC BY-NC-SA

- by Nick

I want to distribute my software under license like Creative Commons Attribution - Non commercial - Share Alike license, i.e. Redistribution of source code and binaries is freely. Modified version of program have to be distributed under the same license. Attribution to original project should be supplied to. Restrict any kind of commercial usage. However CC does not recommend to use their licenses for software. Is there this kind of software license I could apply? Better if public license, but as far as I know US laws says that only EULA could restrict usage of received copy?

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Domain files download upon opening

- by Marian

I'm having this wierd issue with my Domain. My domain is saoo.eu hosted on HostZilla. The issue is that whenever I open an html/php file it automatically downloads it instead of opening it into the browser. Example the saoo.eu/test.html page. Same thing happens with the index.html file. What is going on? Also if I want an PHP code ran into an HTML file I have to add an .htaccess file. But it doesn't seem to work. Tested it before.

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SEO domain name advice

- by Dominykas Mostauskis

I'm starting a website, that is meant for a non-English region, using an alphabet that is a bit different than that of English. Current plan is as follows. The website name, and the domain name, will be in the local language (not English); however, domain name will be spelled in the English alphabet, while the website's title will be the same word(s), but spelled properly with accents. E.g.: 'www.litterat.fr' and 'Littérat'. Does the difference between domain name and website name character use influence the site's SEO? Is it better, SEO-wise, to choose a name that can be spelled the same way in the English alphabet? From my experience, when searching online, invariably, the English alphabet is used, no matter the language, so people will still be searching 'litterat' (without accents and such).

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Is it needed to have your blog title and description in H1 and H2

- by Saif Bechan

I have read an article that states that it is not necessary to have your blog title and description on your website at all. Just have the titles of the posts in h1, on the index and the post page. And on the post page have your different sections started with h2. Widget headers start with h3. Title and description are most of the time in the logo image. I have looked at the source of my favorite blog, http://net.tutsplus.com, and I see they do the same. Is this recommended?

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How to search for packages that provides a virtual package?

- by netvope

How to search for packages that provides a virtual package? For example, I want to search for packages that provides "x-terminal-emulator" in the "main" repository of Ubuntu 12.04. One way to do this is to parse the package index: curl http://archive.ubuntu.com/ubuntu/dists/precise/main/binary-amd64/Packages.gz | zcat | grep -B12 '^Provides: x-terminal-emulator' | grep ^Package: which gives me the following results: Package: gnome-terminal Package: konsole Package: xterm Is that a better way to do this? Can it be done with any of the official tools (apt-get/apt-cache/etc)?

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Hardware instancing for voxel engine

- by Menno Gouw

i just did the tutorial on Hardware Instancing from this source: http://www.float4x4.net/index.php/2011/07/hardware-instancing-for-pc-in-xna-4-with-textures/. Somewhere between 900.000 and 1.000.000 draw calls for the cube i get this error "XNA Framework HiDef profile supports a maximum VertexBuffer size of 67108863." while still running smoothly on 900k. That is slightly less then 100x100x100 which are a exactly a million. Now i have seen voxel engines with very "tiny" voxels, you easily get to 1.000.000 cubes in view with rough terrain and a decent far plane. Obviously i can optimize a lot in the geometry buffer method, like rendering only visible faces of a cube or using larger faces covering multiple cubes if the area is flat. But is a vertex buffer of roughly 67mb the max i can work with or can i create multiple?

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