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  • Architecture diagram of a computer virus

    - by Shiraz Bhaiji
    I am looking for an architecture diagram of a computer virus. Does anyone have a link to a good example? Edit Looks like I am getting hammered with downvotes. I agree that there is no single architecture for a virus. But somethings must be included for a program to be a virus. Example for components in the SAD: Replication method Trigger Payload Hosts targeted Vulnerabilities targeted Anti detection method

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  • PHP framework suggestions

    - by user1104791
    I'm going to be creating a site for a business with the following: Single Item purchases with Paypal, Google Checkout and Amazon Checkout Digital Downloads for members from a CDN Forum Voting on different items While that seems rather simple having to deal with the three different payment gateways is a big pain in the ass. Django has a great payment library which works for all three but I'm not able to find one for any of the PHP frameworks. Anyone have any suggestions? I'm posting here as suggested by someone at Stackoverflow.

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  • Turning your code inside out (functional style) compared to a OO paradigm

    - by Acaz Souza
    I have find this article Turning Your Code Inside Out and I want to know how this approach described in article is for OO programmers/languages. Is this style of design used in OO programmers/languages? What's downsides and goodsides of this approach in a OO language? Update: OO objects have state and behavior, the design explained in article is stateless. Is not only Single Responsability Principle. (If I'm talking shit, please explain to me instead of only downside/close votes)

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  • Isn't MVC anti OOP?

    - by m3th0dman
    The main idea behind OOP is to unify data and behavior in a single entity - the object. In procedural programming there is data and separately algorithms modifying the data. In the Model-View-Controller pattern the data and the logic/algorithms are placed in distinct entities, the model and the controller respectively. In an equivalent OOP approach shouldn't the model and the controller be placed in the same logical entity?

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  • Unable to install Hadoop in Ubuntu 12.04

    - by Anitha
    I am trying to install hadoop in ubuntu 12.04 version. Following the instructions from michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/. Installed java-6-openjdk from ubuntu software center. I have set java_home in .bashrc.Also set java_home in hadoop conf/ env.sh. While formatting the namenode, getting error: usr/lib/jvm/java-6-openjdk/bin/java no such file or directory.

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  • Does Google rate the webpage by amount of visits?

    - by petiar
    Hi there, there is quite extensive discussion about this topic on another website and I am really losing my confidence. The thing is that I claim that the amount (count) of visits is NOT a criteria for increasing the PR of the particular web because: a) Google just doesn't know about every single visit on a webpage (in case it's not using GA) b) Google just would not rate by something what Google actually affects Thanks for your opinions. Peter.

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  • How to use Chrome to access Oracle Applications

    - by Pan.Tian
    So far,Chrome browser is still not certified by Oracle Application, so you can not access Oracle Apps via Chrome.But you can install a chrome Extension to access Oracle Application(It works fine for 11i or R12 instance) Chrome Plugin:Oracle EBS R12 Enablement for Chrome You can use this Chrome Extension to log in Oracle E-Business R12 Form UI without FRM-92129(or FRM-92120) error which say the file Registry.dat lost. Plugin Author: zorrofox (see:http://www.itpub.net/forum.php?mod=viewthread&tid=1724526&page=1#pid20409128)

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  • How do I manually install the package selections presented in tasksel?

    - by joe
    If you forgot to select some software at the "Software Selection" screen on a fresh install, what are the commands to install them after the fact. I know you can install them manually at anytime after everything is said and done, but what are the commands to install just as if you [*]starred them on that screen. For instance: sudo apt-get install lamp-server^ will install the LAMP Server. What are the commands for the DNS Server, Mail Server and Tomcat Java server?

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  • Ways to serve AWS from another domain

    - by mplungjan
    I have installed Ghost on AWS (it is running node) I very much dislike the URL they gave me http://ec2-nn-nnn-nnn-nnn.us-west-2.compute.amazonaws.com/ghost/ I own a domain and linux hosting (but not a VPS) - what would be a practical way to serve my blog via URLS on my own (sub) domain? I can use php and access .htaccess on my domain - possibly do things on the ASW instance too (let me know what to look for)

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  • How to Choose a Web Design Company

    There are certain things that you should take into consideration, if you want to choose an apt Web Design Company, which would fulfill your business requirements. In the first instance, you should ca... [Author: Andrew Burt - Web Design and Development - June 06, 2010]

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  • Can't save data for a member in a data form

    - by RahulS
    Implied sharing is an old thing everyone knows the reasons and solutions of that, still little theory about that: With Essbase implied sharing, some members are shared even if you do not explicitly set them as shared. These members are implied shared members. When an implied share relationship is created, each implied member assumes the other member’s value. Essbase assumes (or implies) a shared member relationship in these situations: 1. A parent has only one child 2. A parent has only one child that consolidates to the parent In a Planning form that contains members with an implied sharing relationship, when a value is added for the parent, the child assumes the same value after the form is saved. Likewise, if a value is added for the child, the parent usually assumes the same value after a form is saved.For example, when a calculation script or load rule populates an implied share member, the other implied share member assumes the value of the member populated by the calculation script or load rule. The last value calculated or imported takes precedence. The result is the same whether you refer to the parent or the child as a variable in a calculation script. For more information have a look at: http://docs.oracle.com/cd/E17236_01/epm.1112/hp_admin_11122/ch14s11.html Now the issue which we are going to talk about is We loose data on save even when the parent is dynamic calc and has a single child. A dynamic calc parent to a single child:  If we design the form with following selection: In the data form we will find parent below the member and this is by design whenever you make a selection using commands to select all the member below parent, always children will appear before the parent: Lets try to enter data, Save it Now, try to change the way we selected members Here we go: Now the question again why this behavior: 1. Data from Planning data form passes to Essbase row by row, 2. Because in data form the child member appears before the parent, 3. First, data goes to Essbase for child (SingleStoreChild), 4. Then when Planning passes the data for parent there was #Missing or No data,  5. Over writes the data to #missing. PS: As we know that dynamic calc members are calculated on the fly they are not allocated with any memory in the Essbase, here the parent was dynamic calc and it was pointing to same memory as child in the background, when Planning was passing data to Essbase for second row it has updated the child with missing data.(Little confusing, let me know if you need more explanation) 6. As one of the solutions just change the order of appearance of parent and child. Cheers..!!! Rahul S. https://www.facebook.com/pages/HyperionPlanning/117320818374228

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  • Subterranean IL: Exception handling 1

    - by Simon Cooper
    Today, I'll be starting a look at the Structured Exception Handling mechanism within the CLR. Exception handling is quite a complicated business, and, as a result, the rules governing exception handling clauses in IL are quite strict; you need to be careful when writing exception clauses in IL. Exception handlers Exception handlers are specified using a .try clause within a method definition. .try <TryStartLabel> to <TryEndLabel> <HandlerType> handler <HandlerStartLabel> to <HandlerEndLabel> As an example, a basic try/catch block would be specified like so: TryBlockStart: // ... leave.s CatchBlockEndTryBlockEnd:CatchBlockStart: // at the start of a catch block, the exception thrown is on the stack callvirt instance string [mscorlib]System.Object::ToString() call void [mscorlib]System.Console::WriteLine(string) leave.s CatchBlockEnd CatchBlockEnd: // method code continues... .try TryBlockStart to TryBlockEnd catch [mscorlib]System.Exception handler CatchBlockStart to CatchBlockEnd There are four different types of handler that can be specified: catch <TypeToken> This is the standard exception catch clause; you specify the object type that you want to catch (for example, [mscorlib]System.ArgumentException). Any object can be thrown as an exception, although Microsoft recommend that only classes derived from System.Exception are thrown as exceptions. filter <FilterLabel> A filter block allows you to provide custom logic to determine if a handler block should be run. This functionality is exposed in VB, but not in C#. finally A finally block executes when the try block exits, regardless of whether an exception was thrown or not. fault This is similar to a finally block, but a fault block executes only if an exception was thrown. This is not exposed in VB or C#. You can specify multiple catch or filter handling blocks in each .try, but fault and finally handlers must have their own .try clause. We'll look into why this is in later posts. Scoped exception handlers The .try syntax is quite tricky to use; it requires multiple labels, and you've got to be careful to keep separate the different exception handling sections. However, starting from .NET 2, IL allows you to use scope blocks to specify exception handlers instead. Using this syntax, the example above can be written like so: .try { // ... leave.s EndSEH}catch [mscorlib]System.Exception { callvirt instance string [mscorlib]System.Object::ToString() call void [mscorlib]System.Console::WriteLine(string) leave.s EndSEH}EndSEH:// method code continues... As you can see, this is much easier to write (and read!) than a stand-alone .try clause. Next time, I'll be looking at some of the restrictions imposed by SEH on control flow, and how the C# compiler generated exception handling clauses.

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  • Adding a SQL Server Membership Provider using the aspnet_regsql.exe Utility

    - by nannette
    You may add a SQL Server Membership Provider using the aspnet_regsql.exe Utility on either your SQL Server Express local database or on a full-blown SQL Server database . In both implementations, you would use the aspnet_regsql.exe utility. This tool is installed when you install your .NET Framework. To use this on your SQL Server 2008 database server, for instance, you would need to first download and install the .NET Framework onto your server. Then you would need to find the location of the aspnet_regsql...(read more)

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  • Interconnect nodes in a Java distributed infrastructure for tweet processing

    - by David Moreno García
    I'm working in a new version of an old project that I used to download and process user statuses from Twitter. The main problem of that project was its infrastructure. I used multiple instances of a java application (trackers) to download from Twitter given an specific task (basically terms to search for), connected with a central node (a web application) that had to process all tweets once per day and generate a new task for each trackers once each 15 minutes. The central node also had to monitor all trackers and enable/disable them under user petition. This, as I said, was too slow because I had multiple bottlenecks, so in this new version I want to improve the infrastructure and isolate all functionalities in specific nodes. I also need a good notification system to receive notifications for any node. So, in the next diagram I show the components that I'll need in this new version: As you can see, there are more nodes. Here are some notes about them: Dashboard: Controls trackers statuses and send a single task to each of them (under user request). The trackers will use this task until replaced with a new one (if done, not each 15 minutes like before). Search engine: I need to store all the tweets. They are firstly stored in a local database for each tracker but after that I'm thinking on using something like Elasticsearch to be able to do fast searches. Tweet processor: Just and isolated component with its own database (maybe something like the search engine to have fast access to info generated by the module). In the future more could be added. Application UI: A web application with a shared database with the Dashboard (mainly to store users information and preferences). Indeed, both could be merged into a single web. The main difference with the previous version of the project is that now they will be isolated and they will only show information and send requests. I will not do any heavy task in them (like process tweets as I did before). So, having this components, my main headache is how to structure all to not have to rewrite a lot of code every time I need to access any new data. Another headache is how can I interconnect nodes. I could use sockets but that is a pain in the ass. Maybe a REST layer? And finally, if all the nodes are isolated, how could I generate notifications for each user which info is only in the database used by the Application UI? I'm programming this using Java and Spring (at least I used them in the last version) but I have no problems with changing the language if I can take advantage of a tool/library/engine to make my life easier and have a better platform. Any comment will be appreciated.

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  • Problem using Skype Screenshare on dual monitors

    - by toobsco42
    I am on Ubuntu 12.04 and when using the screenshare feature of Skype 4.0 on a single monitor I dont have an issue. However as soon as i switch to using dual monitors and try to set up a screenshare, it doesn't work. Does anyone know if this is a known bug in the Skype app? Thanks. Apparently Skype's log files are encrypted, and they recommend just sending the log files to them so that they can determine how to resolve the issue.

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  • Difference between DISTINCT and VALUES in DAX

    - by Marco Russo (SQLBI)
    I recently got a question about differences between DISTINCT and VALUES in DAX and thanks to Jeffrey Wang I created a simple example to describe the difference. Consider the two tables below: Fact and Dim tables, having a single column with the same name of the table. A relationship exists between Fact[Fact] and Dim[Dim]. This relationship generates a referential integrity violations in table Fact for rows containing C, which doesn’t exist in table Dim. In this case, an empty row is virtually inserted...(read more)

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  • What have you seen go wrong when introducing SCRUM?

    - by cringe
    What was the single point of failure encountered when your company decided to replace the current processes with SCRUM? Can you give me some examples of things that have gone really wrong when a company tried to introduce SCRUM? I'd like to hear your anecdotes, something you experienced yourself, the big fail that you saw coming but couldn't prevent. I hear a lot of concern about missing documentation on decisions about the implementation details, and about story sizes and detail level of the stories.

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  • How to Do Competition Analysis

    One of the most important aspects of SEO is the work you put in before you even touch the website or build a single back link. This analysis work involves keyword research and competition analysis. Choose the wrong keywords and you could be wasting all your efforts in the onsite and offsite optimization. Choose keywords which have too much competition and you'll be taking on an uphill battle.

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  • Restoring MSDB

    - by David-Betteridge
    We recently performed a disaster recovery exercise which included the restoration of the MSDB database onto our DR server.  I did a quick google to see if there were any special considerations and found the following MS article.  Considerations for Restoring the model and msdb Databases (http://msdn.microsoft.com/en-us/library/ms190749(v=sql.105).aspx).   It said both the original and replacement servers must be on the same version,  I double-checked and in my case they are both SQL Server 2008 R2 SP1 (10.50.2500).. So I went ahead and stopped SQL Server agent, restored the database and restarted the agent.  Checked the jobs and they were all there, everything looked great, and was until the server was rebooted a few days later.Then the syspolicy_purge_history job started failing on the 3rd step with the error message “Unable to start execution of step 3 (reason: The PowerShell subsystem failed to load [see the SQLAGENT.OUT file for details]; The job has been suspended). The step failed.”   A bit more googling pointed me to the msdb.dbo.syssubsystems table SELECT * FROM msdb.dbo.syssubsystems WHERE start_entry_point ='PowerShellStart'   And in particular the value for the subsystem_dll. It still had the path to the SQLPOWERSHELLSS.DLL but on the old server. The DR instance has a different name to the live instance and so the paths are different.   This was quickly fixed with the following SQL Use msdb; GO sp_configure 'allow updates', 1 ; RECONFIGURE WITH OVERRIDE ; GO UPDATE msdb.dbo.syssubsystems SET subsystem_dll='C:\Program Files\Microsoft SQL Server\MSSQL10_50.DR\MSSQL\binn\SQLPOWERSHELLSS.DLL' WHERE start_entry_point ='PowerShellStart'; GO sp_configure 'allow updates', 0; RECONFIGURE WITH OVERRIDE ; GO Stopped and started SQL Server agent and now the job completes.   I then wondered if anything else might be broken, SELECT subsystem_dll FROM msdb.dbo.syssubsystems Shows a further 10 wrong paths – fortunately for parts of SQL (replication, SSIS etc) we aren’t using! Lessons Learnt 1.       DR exercises are a good thing! 2.       Keep the Live and DR environments as similar as possible.    

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  • In esenthel engine how can I remove some object from Gui class?

    - by Gajet
    I know many people in this site may not know esenthel engine at all and my question may be better answered at engine forum but I'm putting it here to share the name of a real easy to code gameengine with all of you: you can easily add a Button for example to your GUI class (gui is it's shared instance) with Gui += buttonInstance.create("click on me") but I'm just wondering how can you remove an on object from from Gui members. as far as I know there is no such a method as removeChild or getChildren or anything similar.

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  • Programmatically sync dropbox without daemon running

    - by user84207
    I would like to 'manually' force dropbox to sync at certain times (eg at regular, daily intervals using cron, as part of a larger backup script). My goal is to substitute the dropbox daemon with single "sync" command invocations at only the times that I control. Looking at the documentation for the dropbox command on Ubuntu, I only see a way to start/stop the daemon, but not to force it to sync. Is there a lower level api available that can accomplish this?

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  • How to install Hadoop?

    - by Anitha
    I am trying to install Hadoop in Ubuntu 12.04 version. Following the instructions from http://michael-noll.com/tutorials/running-hadoop-on-ubuntu-linux-single-node-cluster/, I installed java-6-openjdk from Ubuntu software-center. I have set java_home in .bashrc. Also set java_home in Hadoop conf/env.sh. While formatting the namenode, I am getting the following error: usr/lib/jvm/java-6-openjdk/bin/java no such file or directory. Thank you. But it's a 64bit OS.

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  • how search engines see reciprical links

    - by sam
    reciprical links cancel each other out from a search engines point of view but what counts as a recpirical link .. Do reciprical links work on a site level or an individual page level ? If you where to say get an in bound link from site-a.com to mysite.com and then linked back from blog.yoursite.com would that be reciprical. Im aware google sees subdomains as different domains all together but in this instance is that the same ?

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  • Indicator menu require long press to open

    - by thor
    I am using 11.10 on my laptop and have a following issue: If I single click on items in notification area (or indicators), like messaging menu, sound menu, calendar, a menu appears and disappears as soon as mouse button is released. I need to do a long press then move pointer to menu area to be able to select items in it. Any clues to fix it? P.S. This is a fresh install but my home folder (thus settings) were restored from previous Ubuntu installation.

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  • Can I define keyboard shortcuts using the Super key?

    - by Rasmus
    In 10.04, I had a lot of keyboard shortcuts defined using Super/Mod4 and one single other key, Super+O ran Opera Super+W opened Nautilus pointing to my Work folder, etc. In 11.04, these do not seem to work -- only Super+R works to run the terminal, and Super+Shift+W successfully runs Nautilus. Is there some way I can get these to function again? Adding them in Keyboard Shortcuts does not work, and neither does adding commands in CompizConfig Settings Manager.

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