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  • is it possible for windows viruses when downloaded through ubuntu affect my windows os

    - by fr33c0untry
    I know that Ubuntu is immune to virus so there is no question of it getting infected while browsing the net.however i frequently transfer files from my pendrive (which i get from other virus infested computers) to my own laptop and save it on the data drive which is shared by both windows and ubuntu.i would like to know if there is a chance for windows viruses which might get saved and then infect it whenever i switch to windows later on.its ironic that i scan my pendrive using avast on windows and then save all my files to my hard drive to keep my laptop free from virus eventhough i have ubuntu.can anyone suggest an alternative.thanks in advance.

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  • How to shift development culture from tech fetish to focusing on simplicity and getting things done?

    - by Serge
    Looking for ways to switch team/individual culture from chasing latest fads, patterns, and all kinds of best practices to focusing on finding quickest and simplest solutions and shipping features. My definition of "tech fetish": Chasing latest fads, applying new technologies and best practices without considering product/project impact, focusing on micro optimization, creating platforms and frameworks instead of finding simple and quick ways to ship product features. Few examples of culture differences: From "Spent a day on trying to map database query with five complex joins in NHibernate" to "Wrote a SQL query and used DataReader to pull data in" From "Wrote super-fast JSON parser in C++" to "Used Python to parse JSON response and call C++ code" From "Let's use WCF because it supports all possible communication standards" to "REST is simple text-based format, let's stick with it and use simple HTTP handlers"

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  • Keep user and user profile in different tables?

    - by Andrey
    I have seen in a couple of projects that developers prefer to keep essential user info in one table (email/login, password hash, screen name) and rest of the non essential user profile in another (creation date, country, etc). By non-essential I mean that this data is needed only occasionally. Obvious benefit is that if you are using ORM querying less fields is obviously good. But then you can have two entities mapped to same table and this will save you from querying stuff you don't need (while being more convenient). Does anybody know any other advantage of keeping these things in two tables?

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  • When will my old page stop appearing on Google?

    - by Bane
    I recently bought a new address for my Blogger blog, from yannbane.blogspot.com to www.yannbane.com. However, www.yannbane.com addresses do not appear when they are searched for! Is this natural? How much time will it take for Google to update its index? yannbane.blogspot.com 301's to www.yannbane.com. Both are added to my Webmaster Tools account, but it shows no data for www.yannbane.com (strangely). And, finally, is there something I could do to speed up the process?

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  • JavaDay Taipei 2014 Trip Report

    - by reza_rahman
    JavaDay Taipei 2014 was held at the Taipei International Convention Center on August 1st. Organized by Oracle University, it is one of the largest Java developer events in Taiwan. This was another successful year for JavaDay Taipei with a fully sold out venue packed with youthful, energetic developers (this was my second time at the event and I have already been invited to speak again next year!). In addition to Oracle speakers like me, Steve Chin and Naveen Asrani, the event also featured a bevy of local speakers including Taipei Java community leaders. Topics included Java SE, Java EE, JavaFX, cloud and Big Data. It was my pleasure and privilege to present one of the opening keynotes for the event. I presented my session on Java EE titled "JavaEE.Next(): Java EE 7, 8, and Beyond". I covered the changes in Java EE 7 as well as what's coming in Java EE 8. I demoed the Cargo Tracker Java EE BluePrints. I also briefly talked about Adopt-a-JSR for Java EE 8. The slides for the keynote are below (click here to download and view the actual PDF): It appears your Web browser is not configured to display PDF files. No worries, just click here to download the PDF file. In the afternoon I did my JavaScript + Java EE 7 talk titled "Using JavaScript/HTML5 Rich Clients with Java EE 7". This talk is basically about aligning EE 7 with the emerging JavaScript ecosystem (specifically AngularJS). The talk was completely packed. The slide deck for the talk is here: JavaScript/HTML5 Rich Clients Using Java EE 7 from Reza Rahman The demo application code is posted on GitHub. The code should be a helpful resource if this development model is something that interests you. Do let me know if you need help with it but the instructions should be fairly self-explanatory. I am delivering this material at JavaOne 2014 as a two-hour tutorial. This should give me a little more bandwidth to dig a little deeper, especially on the JavaScript end. I finished off Java Day Taipei with my talk titled "Using NoSQL with ~JPA, EclipseLink and Java EE" (this was the last session of the conference). The talk covers an interesting gap that there is surprisingly little material on out there. The talk has three parts -- a birds-eye view of the NoSQL landscape, how to use NoSQL via a JPA centric facade using EclipseLink NoSQL, Hibernate OGM, DataNucleus, Kundera, Easy-Cassandra, etc and how to use NoSQL native APIs in Java EE via CDI. The slides for the talk are here: Using NoSQL with ~JPA, EclipseLink and Java EE from Reza Rahman The JPA based demo is available here, while the CDI based demo is available here. Both demos use MongoDB as the data store. Do let me know if you need help getting the demos up and running. After the event the Oracle University folks hosted a reception in the evening which was very well attended by organizers, speakers and local Java community leaders. I am extremely saddened by the fact that this otherwise excellent trip was scarred by terrible tragedy. After the conference I joined a few folks for a hike on the Maokong Mountain on Saturday. The group included friends in the Taiwanese Java community including Ian and Robbie Cheng. Without warning, fatal tragedy struck on a remote part of the trail. Despite best efforts by us, the excellent Taiwanese Emergency Rescue Team and World class Taiwanese physicians we were unable to save our friend Robbie Cheng's life. Robbie was just thirty-four years old and is survived by his younger brother, mother and father. Being the father of a young child myself, I can only imagine the deep sorrow that this senseless loss unleashes. Robbie was a key member of the Taiwanese Java community and a Java Evangelist at Sun at one point. Ironically the only picture I was able to take of the trail was mere moments before tragedy. I thought I should place him in that picture in profoundly respectful memoriam: Perhaps there is some solace in the fact that there is something inherently honorable in living a bright life, dying young and meeting one's end on a beautiful remote mountain trail few venture to behold let alone attempt to ascend in a long and tired lifetime. Perhaps I'd even say it's a fate I would not entirely regret facing if it were my own. With that thought in mind it seems appropriate to me to quote some lyrics from the song "Runes to My Memory" by legendary Swedish heavy metal band Amon Amarth idealizing a fallen Viking warrior cut down in his prime: "Here I lie on wet sand I will not make it home I clench my sword in my hand Say farewell to those I love When I am dead Lay me in a mound Place my weapons by my side For the journey to Hall up high When I am dead Lay me in a mound Raise a stone for all to see Runes carved to my memory" I submit my deepest condolences to Robbie's family and hope my next trip to Taiwan ends in a less somber note.

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  • ISACA Information Security & Risk Management Conference, Nov 14-16

    - by Troy Kitch
    Please join Oracle, as a platinum sponsor, at this year's ISACA Information Security and Risk Management Conference in Las Vegas, Nov 14-16. This year’s conference offers up to 32 CPE hours and is designed to meet the needs of information security, governance, compliance, and risk management professionals. The event builds on and includes the key elements of information security, governance, compliance and risk management practices, and offers a fresh perspective on current and future trends. As provider of the world’s most complete, open, and integrated business software and hardware systems, Oracle can uniquely safeguard your information throughout its entire lifecycle and is the recognized leader in Data Security, Identity Management, and Governance, Risk, and Compliance solutions. Also, attend the Oracle Megatrends Session, Gone in 60 Seconds: Mitigating Database Security Risk and stop by our booth, # 100 & #102, to meet with Oracle Security Solution experts, see live product demos, and more. Learn more and register.

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  • Google Goals process not working through similarly named pages

    - by David
    Well, I'm at a loss. I've ensured that my tracking script is in etc etc, and I've set up my goal and funnel path, but only the first step is ever being shown on the funnel. Goal URL: /checkout/checkoutComplete/ Type: Head Match ... but should this be /checkout/checkoutComplete/(.*) and set to regex rather because there are parameters after the main part of the URL (I thought that's what head match was for) Step 1: /checkout/ <-- required Step 2: /checkout/confirm/ both the above are valid and correct URLs for my domain. But for some reason, the funnel visualization shows entries into the first step, then an exits count that matches the entry count, including /checkout/confirm - but it doesn't go on to the next step! Perhaps I'm doing something obviously wrong...but I can't quite see it? Also, semi-related questions. Making a change to the funnel, does it only affect new incoming data? And how often does it update? Thanks in advance for your help.

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  • Using RegEx's in Multi-Channel Funnels in Google Analytics

    - by Rob H
    For some reason, I can't get my multi-channel funnel which utilizes RegEx's in the path steps to function -- it keeps coming back with no data. There are a few variables which may be holding things up, but I can't figure out the origin of the problem, nor a solution. Here's the situation: The funnel is tracking conversions, defined as when a user completes 4 steps to signup Steps are not "required" Default URL is set to https://example.com There is a 302 redirect set up on our site that leads from http://example.com to https://example.com Within the funnel, steps switch from non-secure pages (unless browser is set to secure browsing), to secure pages once the user moves from the landing page to the second page of the sign-up process (account placeholder has been created) URL at that point contains the variable of publisher number within (but not at the end) the URL My RegEx's are all properly written as tested on rubular.com

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  • Basics of drawing in 2d with OpenGL 3 shaders

    - by davidism
    I am new to OpenGL 3 and graphics programming, and want to create some basic 2d graphics. I have the following scenario of how I might go about drawing a basic (but general) 2d rectangle. I'm not sure if this is the correct way to think about it, or, if it is, how to implement it. In my head, here's how I imagine doing it: t = make_rectangle(width, height) build general VBO, centered at 0, 0 optionally: t.set_scale(2) optionally: t.set_angle(30) t.draw_at(x, y) calculates some sort of scale/rotate/translate matrix (or matrices), passes the VBO and the matrix to a shader program Something happens to clip the world to the view visible on screen. I'm really unclear on how 4 and 5 will work. The main problem is that all the tutorials I find either: use fixed function pipeline, are for 3d, or are unclear how to do something this "simple". Can someone provide me with either a better way to think of / do this, or some concrete code detailing performing the transformations in a shader and constructing and passing the data required for this shader transformation?

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  • How do you unit test your javascript.

    - by Erin
    I spend a lot of time working in javascript of late. I have not found a way that seems to work well for testing javascript. This in the past hasn't been a problem for me since most of the websites I worked on had very little javascript in them. I now have a new website that makes extensive use of jQuery I would like to build unit tests for most of the system. My problems are this. Most of the functions make changes to the DOM in some way. Most of the functions request data from the web server as well and require a session on the service to get results back. I would like to run the test from either a command line or a test running harness rather then in a browser. Any help or articles I should be reading would be helpful.

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  • ubuntu 14 painfully slow on dell r200

    - by sirmonkey
    I didn't notice it at first. The machines (there is 20 plus) are to be used a simple file servers. It wasn't until samba just wouldn't act right that I installed a desktop gui and started more diagnoseing the problem did I catch the slow preformance... I've tested 4 servers they all suck. And windows 7 runs fantastic on them. I have Google and searched. But nothing to explain this. The easy test is dmesg is so slow you can almost read it. I'm guessing it's an apic or cpu power management issue. What output would you all like????? It is a core2 machine with 4Gb of ram. On board data.

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  • How can I initialize file names in the folders/ subfolders?

    - by user37991
    Sometimes Thunar allows 'camel-case' of file names, but only in the immediate folder, not the sub-folders. "Perl module to convert stringt to and from CamelCase" exists in Synaptic, but it is not powerful enough, or am I ignorant? The only way I can reliably do this is with Windows shareware (paid $$): Servant Salamander). That's why all my data & archives are on NTFS partitions. BTW: Synaptic has different entries for 'initialize' and 'initialise'. But I'll mention this in another question.

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  • How to debug a server that crashes once in a few days?

    - by Nir
    One of my servers crashes once in a few days. It does low traffic static web serving + low trafic dynamic web serving (PHP, local MYSQL with small data, APC, MEMCACHE) + some background jobs like XML file processing. The only clue I have is that a few hours before the server dies it starts swapping (see screenshot http://awesomescreenshot.com/075xmd24 ) The server has a lot of free memory. Server details: Ubuntu 11.10 oneiric i386 scalarizr (0.7.185) python 2.7.2, chef 0.10.8, mysql 5.1.58, apache 2.2.20, php 5.3.6, memcached 1.4.7 Amazon EC2 (us-west-1) How can I detect the reason for the server crashes ? When it crashes its no longer accessible from the outside world.

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  • Do backend developers care what their code looks like in the frontend?

    - by benhowdle89
    As a backend and a frontend developer I see the process from start to finish, first by creating the logic, displaying the correct data on a web page and then using frontend skills to make this look awesome. My question is, do pure backend developers care what their code ends up looking like in the frontend? As far as the user is concerned, they will ONLY see design/frontend. They don't actually care that your code is clean, DRY and maintainable. As long as it doesn't disrupt their payment process or flight booking they do not care. Does this affect the average backend developer?

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  • Azure Futures - Distributed Computing and Number Crunching

    - by JoshReuben
    "the biggest Azure customers today are the ones using HPC on-premises at the current time" - http://www.zdnet.com/blog/microsoft/windows-azure-futures-turning-the-cloud-into-a-supercomputer/8592?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+zdnet%2Fmicrosoft+%28ZDNet+All+About+Microsoft%29&utm_content=Google+Reader   Orleans Framework for cloud computing - http://research.microsoft.com/en-us/projects/orleans     HPC on Azure - http://www.zdnet.com/blog/microsoft/microsoft-finalizes-its-latest-supercomputing-operating-system-release/7414   Dryad is Microsoft’s competitor to Google MapReduce and Apache Hadoop  - http://www.zdnet.com/blog/microsoft/microsoft-takes-a-step-toward-commercializing-its-dryad-distributed-computing-technologies/8255?tag=mantle_skin;content   SQL Server Analysis Services DataMining in the cloud - http://www.sqlmag.com/article/reporting2/azure-data-mining-in-the-cloud.aspx

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  • From Transactions To Engagement

    - by David Dorf
    I've mentioned in the past that Oracle has invested quite a bit in acquiring social companies to build out its Social Relationship Management suite.  The concept is to shift away from transactions and towards engagement.  Social media represents a great opportunity to engage with customers, learn what they want, and personalize the shopping experience for them. I look at SRM as the bridge between traditional CRM and CX.  If you're looking for ideas, check out Five Social Retailing Suggestions and Social Analytics and the Customer.  There are lots of ways to leverage social media to enhance the customer experience and thus drive more sales. My friends over at 8th Bridge have just released their Social IQ report in which they rate retailers on their social capabilities.  They also produced a nice infographic so you can consume the data quickly, but I'd still encourage you to download the full report. Retailers interested in upping their SRM abilities should definitely stop by the Oracle booth at NRF in January.

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  • What norms/API for monitoring my servers?

    - by dystroy
    I have a dozen server applications installed on my customers intranets (they can send http requests over the internet but cannot be called from outside). They're written in various technologies, mainly java and Go. I want them to regularly push information about their state towards a central server which is visible on internet. Some of this information is generic (is it ON ?), some is specific (size of a cache in an application for example). The main goal is to be able to make a small web page on which I could instantly check the state of every servers. And maybe later add some kind of notification in case of problem. Obviously I can do this by writing a few dozen lines of code each side (or a little more if I put this data in a database) but in order to ease future evolution, it could be interesting to use some existing norms or libraries. So, what are the current opensource free and light solutions to do this, preferably with no central configuration when I add a server ? I'd prefer a norm over a library.

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  • Ubuntu 12.04 crashing

    - by James Mullinix
    We have a server with 2x32gb sas raid 1 and 4x1tb raid 10 + 2x1tb hot spares. Whenever we try to copy the 1tb and 1.5e6 files to a backup location (even just using tty1 cp command) it fails. We have tried using backintime and dejadup, and resorted to a manual cp to an external usb2 HDD. When that failed, we tried installing an internal HDD on the mobo (not on raid) and another cp, which also fails. The failures lock up the system and we are left with an unfortunate hard reboot situation. After reboot, syslog tends to be empty (only containing newly booted data) and we haven't a clue where to start. It has been 3 weeks since our last successful backup and we are getting nervous... -using 3ware raid controller, 8gb ram and nvidia pciexpress graphics with a gigabyte mobo and xeon 4-core processor.

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  • How many tiers should my models have in a DB driven web app?

    - by Hanno Fietz
    In my experience, the "Model" in MVC is often not really a single layer. I would regularly have "backend" models and "frontend" models, where the backend ones would have properties that I want to hide from the UI code, and the frontend ones have derived or composite properties which are more meaningful in the context of the UI. Recently, I have started to introduce a third layer in between when database normalization created tables that did not really match the conceptual domain objects anymore. In those projects I have model classes that are equivalent with the DB structure, these become components of objects that represent the domain model, and finally these are filtered and amended for displaying information to the user. Are there patterns or guidelines for how, when and why to organize the data model across application layers?

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  • Is HR The New IT?

    - by Scott Ewart
    Is HR The New IT?  As recruitment, on-boarding and development head to the cloud and mobile devices put sophisticated tools into everyone’s hands, HR leaders are discovering that technology savvy and analytical skills are key to effective talent management. In this article by Ladan Nikravan in the September edition of Talent Management magazine, Oracle's own Chris Leone, SVP of Fusion Strategy, gives his take on how Technology trends such as social, mobile, big data and the cloud are creating a fundamental change in how employees and HR create value and relationships within the networked organization. Read the full article here: http://d27vj430nutdmd.cloudfront.net/23555/122778/122778.1.pdf

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  • Zookeeper naming service [closed]

    - by kolchanov
    I need a recommendation for naming service implementation. We are ISV and we have a lot of applications (services) with very different protocols such as http (Rest), low level tcp, amqp, diameter, telco protocols Rx, Ry, Ud and many others. We want to simplify configuration, deployment and service discovery procees and it seems that It's time to create central configuration registry. So I have few questions: - is zookeeper suitable for this purpose? - does exists more suitable and more special solution? - best practice for service naming for discoverin. Any standards? - recommendation for service configuration data structure Also we are keeping in mind future tasks For dynamic application distribution in a private cloud. Could you share your real life experience?

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  • How to make the Angry Birds "shot arch" dotted line? [duplicate]

    - by unexpected62
    This question already has an answer here: Show path of a body of where it should go after linear impulse is applied 2 answers I am making a game that includes 2D projectile flight paths like that of Angry Birds. Angry Birds employs the notion that a previous shot is shown with a dotted line "arch" showing the player where that last shot went. I think recording that data is simple enough once a shot is fired, but in my game, I want to show it preemptively, ie: before the shot. How would I go about calculating this dotted line? The other caveat is I have wind in my game. How can you determine a projectile preemptively when wind will affect it too? This seems like a pretty tough problem. My wind right now just applies a constant force every step of animation in the direction of the wind flow. I'm using Box2D and AndEngine if it matters.

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  • ASP.NET 4.0 and the Entity Framework 4 - Part 4 - A 3 Layered Approach to the Entity Framework

    In this article, Vince suggests a pattern to use when developing a three layered application using the Entity Framework 4. After providing a short introduction he demonstrates the creation of the database, data access layer, business logic layer, and a web form. He does so with the help of detailed explanations, source code examples and related screenshots. He also examines how to select records to load a Drop Down List, including adding, editing and deleting records.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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  • Trim on encrypted SSD--Urandom first?

    - by cb474
    My understanding (I'm not sure I'm getting this all right) is that if one uses Trim on an encrypted SSD, it defeats some of the security benefits, because the drive will write zeros to empty space (as files are deleted). See: http://www.askubuntu.com/questions/115823/trim-on-an-encrypted-ssd And: http://asalor.blogspot.com/2011/08/trim-dm-crypt-problems.html My question is: From the perspective of the performance of the SSD and the functioning of Trim, would it therefore be better to simply zero out the SSD, before setting up an encrypted system, rather than writing random data to the drive, with urandom, as one usually does? Would this basically leave one with the same level of security anyway? And more importantly, would it better enable the Trim functionality to work as intended, with the encrypted SSD?

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  • Is Java much harder to "tweak" for performance compared with C/C++?

    - by user997112
    Does the "magic" of the JVM hinder the influence a programmer has over micro-optimisations in Java? I recently read in C++ sometimes the ordering of the data members can provide optimizations (granted, in the microsecond environment) and I presumed a programmer's hands are tied when it comes to squeezing performance from Java? I appreciate a decent algorithm provides greater speed-gains, but once you have the correct algorithm is Java harder to tweak due to the JVM control? If not, could people give examples of what tricks you can use in Java (besides simple compiler flags).

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