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• Server 11.04 Bind9 Failure

  - by Gordon McIntosh

  After 3 weeks of trying to diagnose a failure of bind9, to start I have to admit I need assistance. Initially it was running correctly and when I made a modification to a bind file and re-run it an error msg came back rndc: 127.0.0.1#953 bind9 start fail It also fails to start on any other bind9 upgrade or required pkg. grep on mysql returns nothing now even if it is running, and dig on 127 only works when I have my phone connected as a modem. I don't have any more diagnostics that I know of, so some help would be appreciated as development has stopped.

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• Why does Java allow to implement different interfaces, each containing a method with the same signature?

  - by Software Engeneering Learner

  I've recently found that I can have two interfaces containing method with the same signature as a method in the other interface. And then I can have an interface or class that implements both of that interfaces. So the descendant class/interface has implicitly implements two different methods as a one method. Why is this allowed in Java? I can see a numerous problems that arises from that. Even eclipse only can find out about implementations for only one interface method, but for the second one it doesn't show any implementations at all. Also I believe there would be problems with automatic refactoring, like when you would like to change the signature of the method in one of the interfaces and IDE won't be able to correctly change that signature in all implementations, as they implement two different interfaces and how will IDE know what interface method it implementation descends. Why don't just make a compiler error like 'interfaces method names clashes' or something like that?

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• T-SQL Tuesday : Reflections on the PASS Summit and our community

  - by AaronBertrand

  Last week I attended the PASS Summit in Seattle. I blogged from both keynotes ( Keynote #1 and Keynote #2 ), as well as the WIT Luncheon - which SQL Sentry sponsored. I had a fantastic time at the conference, even though these days I attend far fewer sessions that I used to. As a company, we were overwhelmed by the positive energy in the Expo Hall. I really liked the notebook idea, where board members were assigned notebooks to carry around and take ideas from attendees. I took full advantage when...(read more)

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• How to Connect Lubuntu to Ubuntu Hotspot via Ethernet?

  - by Dillmo

  I just fixed up an old laptop by installing Lubuntu 13.04. The laptop does not have a network card, so it can only connect via Ethernet. I created a hotspot with an Ubuntu laptop, but am having trouble connecting to it via wired. I am not asked for a password when I try to connect, even though the network has a password. The hotspot will not enable a wired connection, so that may be the problem. How can I connect a Lubuntu laptop to an Ubuntu laptop hotspot via Ethernet? Update: The connection also does not ask for a password when connecting to a gaming adapter.

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• Google indexes everything but homepage [closed]

  - by Markasoftware

  Possible Duplicate: Homepage not showing on Google I own markasoftware.getenjoyment.net. I submitted a sitemap for it, but Google is still not indexing things right: It indexes everything but the homepage!!! I have a JavaScript game on the site and it is even indexing the components of the game, but not the homepage. I checked my homepage at validator.w3.org for HTML5 validation and it passed. I also have a Google webmaster account and it says no indexing errors. What is the problem?

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• A particular url on a website suddenly disappeared from google search results - why?

  - by Ragavendran Ramesh

  I have a website which had a particular page url that was indexed in google search results - in the first 10 results. Suddenly it disappeared. Now that page is not even in the first 100 results. What would be the reason? I am feeling that the page has be spammed by our competitors. Is it possible to avoid that, or can I find if that page has been spammed or not? Is it possible to find the particular page in a website is spam or malicious?

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• Google indexed my main site's content under subdomains

  - by Christie Angelwitch

  Google is indexing top level domain content as though it belongs on subdomains and I want to disable this. My site has wildcards enabled and we also have two subdomains with unique content. The first subdomain serves as a blog, the second one has only one page. Both have backlinks. Google has indexed content from the main site under the subdomains as well. Let's say that we have a page at example.com/page.html . The same page has also been indexed as subdomain.example.com/page.html as well and sometimes ranks better than the one located at the main site. The thing is that we never placed this content at the subdomain. I've thought about adding canonical tags at the subdomains to help with the duplicate content issue. How can I stop Google from indexing those pages? I don't even know how Google found those, since we never placed them at the subdomains.

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• The Best Articles for Playing, Customizing, and Organizing Your Media

  - by Lori Kaufman

  Computers today are used for much more than generating documents, writing and receiving email, and surfing the web. We also use them to listen to music, watch movies and TV shows, and to transfer media to and from mobile devices. Below are links to many articles we have published on various media topics, such as streaming media, managing and organizing your media, converting media formats, obtaining album art, preparing media for transfer to mobile devices, and some general information about working with audio and video. You’ll also find links to articles about specific media tools, such as Audacity, XBMC, Windows Media Player, VLC, and iTunes. How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume Make Your Own Windows 8 Start Button with Zero Memory Usage

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• Possibility of recovering files from a dd zero-filled hard disk

  - by unknownthreat

  I have "zero filled" (complete wiped) an external hard disk using dd, and from what I have heard: people said you should at least "zero fill" 3 times to be sure that the data are really wiped and no one can recover anything. So I decided to scan the disk once again after I've zero filled the disk. I was expecting the disk to still have some random binary left. It turned out that it has only a few sequential bytes in the very beginning. This is probably the file structure type and other headers stuff. Other than that, it's all zeros and nothing else. So if we have to recover any file from a zero filled disk, ...how? From what I've heard, even you zero fill the disk, you should still have some data left. ...or could dd really completely annihilate all data?

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• Mobile Devices and SharePoint

  - by Sahil Malik

  SharePoint, WCF and Azure Trainings: more information There is a computer in your pocket, and mine. Though lets be honest, beyond email, Organizations though are still struggling to make use of these smart devices that they are already paying for. The reason is simple, Imagine a computer, with an inferior processor, poor connectivity, smaller screen, and easily lost and used for personal purposes. Add to it, multiple platforms, and an incredibly fast release cadence. In this fast paced session, Sahil will demonstrate mobile apps targeting the SharePoint and Office 365 platforms demonstrating what you, the Microsoft developer needs to learn and be on top of going forward. And yes, you need to broaden your horizons past C# too. But don’t worry, even if you have never worked with iOS before, there is plenty to chew on in this session. Read full article ....

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• Studies on code documentation productivity gains/losses

  - by J T

  Hi everyone, After much searching, I have failed to answer a basic question pertaining to an assumed known in the software development world: WHAT IS KNOWN: Enforcing a strict policy on adequate code documentation (be it Doxygen tags, Javadoc, or simply an abundance of comments) adds over-head to the time required to develop code. BUT: Having thorough documentation (or even an API) brings with it productivity gains (one assumes) in new and seasoned developers when they are adding features, or fixing bugs down the road. THE QUESTION: Is the added development time required to guarantee such documentation offset by the gains in productivity down-the-road (in a strictly economical sense)? I am looking for case studies, or answers that can bring with them objective evidence supporting the conclusions that are drawn. Thanks in advance!

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• Would you use (a dialect of) LISP for a real-world application? Where and why?

  - by Anto

  LISP (and dialects such as Scheme, Common LISP and Clojure) haven't gained much industry support even though they are quite decent programming languages. (At the moment though it seems like they are gaining some traction). Now, this is not directly related to the question, which is would you use a LISP dialect for a production program? What kind of program and why? Usages of the kind of being integrated into some other code (e.g. C) are included as well, but note that it is what you mean in your answer. Broad concepts are preferred but specific applications are okey as well.

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• Believeland

  - by AllenMWhite

  My daughter sent me this link to an article on ESPN called Believeland , which is a bit of a Tolstoy, but gives you a bit of the feel of what it's like to be from Cleveland. We love our city, even as many of us leave it for greener (and warmer) pastures elsewhere. One of the things I hope you'll find when you come here for SQL Saturday 60 on February 5, is what a great place it is to live here. Our call for speakers is open until Sunday. I hope to see you here. Allen...(read more)

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• Nested languages code smell

  - by l0b0

  Many projects combine languages, for example on the web with the ubiquitous SQL + server-side language + markup du jour + JavaScript + CSS mix (often in a single function). Bash and other shell code is mixed with Perl and Python on the server side, evaled and sometimes even passed through sed before execution. Many languages support runtime execution of arbitrary code strings, and in some it seems to be fairly common practice. In addition to advice about security and separation of concerns, what other issues are there with this type of programming, what can be done to minimize it, and is it ever defensible (except in the "PHB on the shoulder" situation)?

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• Is it convenient to use a XML/JSON generated based system? [closed]

  - by Marcelo de Assis

  One of my clients insists that we missed a requisite for the project(a little social network, using PHP + MySql), is that all queries are made from XML / JSON static files (using AJAX) and not directly from the database. Edit: The main reason, stated by client, is a way to economize bandwith. Even the file loading, has to be using AJAX, to avoid server side processing. We will still use a database to store and insert data. These XML / JSON files will be (re) generated whenever any data is changed by CMS or users. As the project was developed without this "technique", we'll have a lot of work ahead, so I would like to avoid that. I'm asking if it's convenient to use a XML generated based system, because I think a database is already "optimized" and secure to deal with a lot of data traffic. Other issue I'm afraid of, is a chance of conflict when a user is trying to read a XML/JSON which is being just generated.

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• How do I store the OAuth v1 consumer key and secret for an open source desktop Twitter client without revealing it to the user?

  - by Justin Dearing

  I want to make a thick-client, desktop, open source twitter client. I happen to be using .NET as my language and Twitterizer as my OAuth/Twitter wrapper, and my app will likely be released as open source. To get an OAuth token, four pieces of information are required: Access Token (twitter user name) Access Secret (twitter password) Consumer Key Consumer Secret The second two pieces of information are not to be shared, like a PGP private key. However, due to the way the OAuth authorization flow is designed, these need to be on the native app. Even if the application was not open source, and the consumer key/secret were encrypted, a reasonably skilled user could gain access to the consumer key/secret pair. So my question is, how do I get around this problem? What is the proper strategy for a desktop Twitter client to protect its consumer key and secret?

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• Encrypt folders out of Home

  - by igi

  Is there a way to encrypt a folder, which is not in /home but even in a different partition, so only my user can access/read contained files? Alternatively, I would like to understand if it is possible to turn a complete ext4 partition into an encrypted volume, which would be mounted at user login. If possible, I would like to make the change without reinstalling Ubuntu. My PC has (mount output): /dev/sda1 on / type ext4 (rw,errors=remount-ro) /dev/sda3 on /home type ext4 (rw) /dev/sda4 on /home/igor/Personale type ext4 (rw) sda4 is the partition containing folders I would like to protect. Thanks!

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• I removed nvidia driver and lshw -c video still shows nvidia

  - by sinekonata

  Today I tried to activate the newer experimental drivers and both 304 and 310 failed to even install. So I tried the regular nvidia driver 295.40 for the 20th time today (I had lag issues and was testing Nouveau vs Nvidia with dual monitor and Unity2D-3D) Within my tty1 I tried to remove nvidia: sudo apt-get remove nvidia-settings nvidia-current and purge too reboot, nothing. So when lshw -c video displayed nvidia as my driver I tried sudo rm /etc/X11/xorg.conf since I read ubuntu would "reset" the GUI conf but reboot, nothing. So next I tried sudo jockey-text --disable=xorg:nvidia_current And nothing has worked...

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• Funky Behavior NoTracking Query Entities

  I’ve been using a lot of NoTracking queries to grab lists of data that I don’t need change tracked. It enhances performance and cuts down on resources. There are some nuances about these entities, however. One of the interesting behaviors of EF4’s Lazy Loading is that even if you have entities that you have queried with NoTracking on, they will still lazy load related entities. Unless you’ve read this somewhere (it’s on the ADO.NET team’s blog post which introduces...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Inconsistencies in Health Monitoring Between WebForms and MVC

  As I have written and spoken on numerous occasions, Health Monitoring happens to be one of my favorite features in ASP.NET. In WebForms, it's a path well trodden. However, while building Morts & Elvises with MVC2, I ran into a strange inconsistency, which I'd like to describe here. WebForms Whenever a WebForm throws an unhandled exception, at the very least the error is written to the system's even log. Suppose we have this silly simple page method: protected override void OnLoad...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Why was libhal removed in Ubuntu 13.10?

  - by I-Jo

  After installing 13.10, I realized libhal was no longer a sudo apt-get install away... in fact it was no longer anywhere to be found (except in the Raring Repos). And installing libhal from the raring repos is not the best option. It is the best workaround for not having it. Why was it removed? Was it an accidental removal, or is it no longer going to be included in the repos, even in the next LTS? I ask because Amazon (and other services) require it to be installed.

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• Unable to access jar. Why?

  - by SystemNetworks

  I was making a game in java and exported it as jar file. Then after that, I opeed jar splice. I added the libaries and exported jar. I added the natives then i made a main class. I created a fat jar and put it on my desktop. I'm using Mac OS X 10.8 Mountain Lion. When I put in the terminal, java -jar System Front.jar it says unable to access System Front.jar Even if i double click on the file, it doesen't show up! Help! I'm using slick. I added slick and lwjgl as libraries for the jar splice at the jars.

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• Need instructions how to create wpa_supplicant.conf and add fast_reauth=0 to it // WPA 2 Enterprise & frequent wlan disconnects

  - by nutty about natty

  Like many other natty users on a university / academic network, I'm experiencing annoying frequent disconnects / hangs / delays. See, for instance: https://bugs.launchpad.net/ubuntu/+source/wpasupplicant/+bug/429370 I would like to learn how to add fast_reauth=0 to the wpa_supplicant.conf file. This file, it seems, does not exit by default, and needs to be manually created first: http://w1.fi/gitweb/gitweb.cgi?p=hostap.git;a=blob_plain;f=wpa_supplicant/README [quote] You will need to make a configuration file, e.g., /etc/wpa_supplicant.conf, with network configuration for the networks you are going to use. [unquote] Further, I installed wpa_gui which probably needs to be launched with parameters, else it's pretty blank... What I'm hoping for is this: That creating a wpa_supplicant.conf file with fast_reauth=0 in it, saving it to the relevant path, will work and make my uni wireless (more or even completely) stable. I read mixed reviews about wicd (as an alternative to the network manager). Also note that on my basic wlan at home (with bog-standard wpa encryption) the connection is stable. Thanks!

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• Blogging & SEO - They Go Hand in Hand

  You write a blog loyally every day or so. You provide informative, fascinating substance for your faithful readers. You've even got a number of member links in there, too. But is that this enough to induce great search engine results for your hard work? In all probability not. Certain, you'll get listed with the search engines effortlessly. But without a high twenty listing at one among the majors (Google, Yahoo! or MSN), you will not have traffic, literally, banging down your door....

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• Broken keyboard shortcuts

  - by c089

  When I freshly installed maverick on my new notebook, I set up my keyboard shortcuts like this: Switch to WS 1 = Mod4+1, Move Window to WS 1 = Mod4+Shift+1, Switch to WS 2 = Mod4+2 and so on (Mod4 being the "Windows" key). But now the three-key combinations (i.e. the ones I use for "move to...") stopped working. When I go to keyboard preferences, I still see them and I can even change them to a different combination and then again to the desired one - but they won't execute the window movement afterwards :/ Any suggestions how to fix this?

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