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  • Is it poor practice to identify objects via an enumeration property, instead of using GetType()?

    - by James
    I have a collection of objects that all implement one (custom) interface: IAuditEvent. Each object can be stored in a database and a unique numeric id is used for each object type. The method that stores the objects loops around a List<IAuditEvent>, so it needs to know the specific type of each object in order to store the correct numeric id. Is it poor practice to have an enumeration property on IAuditEvent so that each object can identify itself with a unique enumeration value? I can see that the simplest solution would be to write a method that translates a Type into an integer, but what if I need an enumeration of audit events for another purpose? Would it still be wrong to have my enumeration property on IAuditEvent?

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  • How can I convert my Stream (image data) back into a file

    - by James Hay
    I have a WCF restful service that I'm trying to upload an image to. I have a very basic metod that accepts a stream as it's only parameter and is defined in the contract as: [OperationContract] [WebInvoke(UriTemplate = "ReviewImage", BodyStyle = WebMessageBodyStyle.Bare, Method = "POST")] ReviewImage UploadImage(Stream data); I'm actually consuming this service from flash (which is fairly inconsequntial) which selects a file from the file system and uploads it through the service url. It all works seems to work, adding a breakpoint to the UploadImage method breaks as expected. If I wanted to save this file back to disk, is it just a case of reading this Stream object into a FileStream object that creates the file somewhere? A bit like the this? When i do actually do this the file can not be opened as an image. I'm sure i'm missing a key piece of knowledge here. Does my stream actually contain just the image bytes or does it contain more than that?

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  • Margin totals in xtabs

    - by James
    If you have 2 cross classifying variables you can use rowSums and colSums to produce margin totals on an xtabs output. But how can it be done if you have 3 classifying variables (ie margin totals in each sub table)?

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  • Decoding base64 php file

    - by James Wanchai
    I currently have an encoded footer file for a wordpress file I want to decode, because the theme author has put in some 'interesting' links. Don't get me wrong, I'm very happy to link back to the author, but gambling sites aren't really what I want! The file is this- <?php $o="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";eval(base64_decode("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"));return;?> Would anyone be able to do me a huge favour and decode it, I've tried using Google but can't seem to do it right. Thank you!

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  • How to "scan" a website (or page) for info, and bring it into my program?

    - by James
    Well, I'm pretty much trying to figure out how to pull information from a webpage, and bring it into my program (in Java). For example, if I know the exact page I want info from, for the sake of simplicity a Best Buy item page, how would I get the appropriate info I need off of that page? Like the title, price, description? What would this process even be called? I have no idea were to even begin researching this.

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  • Is there a way to redirect ONLY stderr to stdout (not combine the two) so it can be piped to other programs

    - by James K
    I'm working in a Windows CMD.EXE environment and would like to change the output of stdout to match that of stderr so that I can pipe error messages to other programs without the intermediary of a file. I'm aware of the 2>&1 notation, but that combines stdout and stderr into a single stream. What I'm thinking of would be something like this: program.exe 2>&1 | find " " But that combines stdout and stderr just like: program.exe | find " " 2>&1 I realize that I could do... program 2>file type file | find " " del file But this does not have the flexibility and power of a program | find " " sort of notation. Doing this requires that program has finished with it's output before that output can be processed.

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  • Stop a user directly accesing a page

    - by James Jeffery
    I have a page called create.php. It receives post variables and sets up accounts. I don't want that page to be accessible by a user. What's the conventional way of achieving this? I think I remember reading something about including a page with a CONSTANT. If the CONSTANT is not present the page has been accessed directly. I think Wordpress also do it.

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  • Questions about "sets"

    - by James
    I have a test tomorrow that I am revising for and the lecturer has supplied some sample questions with no answers. I was hoping I could get some help with a couple of them. I've written what I think the answer is for them. 1. What is the type of the set {1, 2, 3}? integer/number 2. What is the type of the set {{1}, {2}, {3}}? integer/number (unsure what putting each number in {} does?) 3. What is the type of the set {{1}, {2}, {3}, empty}? integer/number 4. What is the type of the set {1, {2}, 3}? — is it well typed? integer/number 5. What is the type of the set {1, 2, john}? — is it well typed? unsure for a mixed set. Taking a complete guess of void or empty. Any help will be much appreciated.

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  • how can i download a set of variable images in flex/as3 and display them?

    - by james
    hi guys.... suppose i have 10 image variables like this var image1:String = http://somewhere.com/image1.jpg var image2:string = .....image2.jpg var image3:string = .....image3.jpg and so forth......... i have a timer that displays each variable as an image one a time .... how do i "buffer" the image and display them instead of going out each time the timer runs? im asking because sometimes the server could slow or some other reason. so what i want to do is to download all those images and then display them from the clients computer. some sort like @Embed ??? complete newbie.. so please go slow on me ... :p

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  • How do submit an object to a struts2 action using jQuery?

    - by James Drinkard
    I have an object that I'm populating from a selection off a table row that a user selects. I have a jQuery function that captures the click event and a hidden form field populates an id I need. However, I'm not sure as to the proper way to send off that object to a struts2 action? I tried using this: $(function() { $('#tbl tr').click(function() { var id = $(this).closest('tr').find('input:hidden').val(); var page = "<s:url action='update/deleteInfo.action'/>?model.isDelete=true&model.info.id=id"; console.log(page); window.location.href=(page); }); }); The model object has an isDelete boolean variable and the model has a nested info object that has an id variable with getter/setters. However, when I send this across, the model object isn't populated with these entries. Is there a way to do this or a better way than the url tag?

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  • Using .htaccess to change my website URLs

    - by James P
    I have some pages organised like this: http://localhost/index.html http://localhost/download.html http://localhost/contact.html And I need them changed to suit the following URL structure: http://localhost/ http://localhost/download http://localhost/contact Without making sub directories and putting in pages as index.html. As far as I know .htaccess can be used for this, but I have no idea what I need to add to my .htaccess file to make this work. Can anyone provide some help? Thanks.

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  • Resized XIB still full size

    - by James
    Building an iPad app. I have a button on my main view that I want to launch a help window. The help window is fairly involved and has its own xib/controller. I resized the help window's XIB and saved it. I instantiated it and added it to the application controller's views as a modal. For some reason this window is still taking up the entire screen. What I really want to do is have a "view" that's maybe 70% of the width and height that lays over the normal view as a modal. How is this accomplished normally? I want it to require that they hit a button to close it. Thanks

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  • How can I dynamically resize the jQuery Colorbox plugin?

    - by James Skidmore
    The AJAX content loaded in a Colorbox has some JavaScript included that resizes things within the content. Colorbox determines its sizing based on the sizes before all of the AJAX happens. How can I make the Colorbox resize after the content has been loaded? Here is a link where someone said that you can call colorbox() again after it's been loaded, but I can't figure out how to do that: http://groups.google.com/group/colorbox/browse_thread/thread/535d21c69e9006b0

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  • Why isn't this working - using :not() with an event handler

    - by james emanon
    I seem to have another issue that I am not conquering. Real simple premise. I have a mousedown event, and basically IF one particular element on the page is clicked, I want nothing to happen, else I want hide() some div. $(function(){ $("document :not(#_ignorelement)").mousedown(function(event){ if($('#_hidethiselement').length){ $('#_hidethiselement').hide(); } }) }) That is not working at all. I also tried the following: $(document).not($("#_ignorelement")).mousedown(function(event){ $(document).not("_ignorelement").mousedown(function(event){ IF I can solve that, curious how I would actually have ":not" encompass the parent div, like so: $().not("_ignoreelement").parent().closest('div').mousedown(function Because the element "_ignorelement" is an anchor tag that is in a div. Wonder how I can use the parent div perhaps, instead of the anchor tag. Anyways, any help would be appreciated.

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  • Performing an operation based on values within an array

    - by James W.
    I'm trying to figure out how to do operations based on values in an array. The values are taken from a string and inserted into the array e.g num = TextBox.Text.Split(' '); results = Convert.ToDouble(num[0]); for (int i = 0; i < num.Length - 1; i++) { if (num[i] == "+") { results += Convert.ToDouble(num[i++]); } ... } So based on this, let's say the TextBox string value was "1 + 2". So the array would be: ------------- | 1 | + | 2 | ------------- 0 1 2 (indexes) The part I'm having trouble with is Convert.ToDouble(num[i++]).. I've tried num[1] + 1, num[i + 1], etc I'm trying to figure out how to get it to perform the operation based on the first value and the value in the index after the operator. Which is the correct way to do something like this?

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  • jenkins-maven-android when running throwing the error "android-sdk-linux/platforms" is not a directory"

    - by Sam
    I start setting up the jenkins-maven-android and i'm facing an issue when running the jenkin job. My Machine Details $uname -a Linux development2 3.0.0-12-virtual #20-Ubuntu SMP Fri Oct 7 18:19:02 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Steps to install the Android SDK in Ubuntu https://help.ubuntu.com/community/AndroidSDK since i'm working on headless env (ssh to client machine) i used following command to install the platform tools android update sdk --no-ui download apache maven and install on http://maven.apache.org/download.html mvn -version output root@development2:/opt/android-sdk-linux/tools# mvn -version Apache Maven 3.0.4 (r1232337; 2012-01-17 08:44:56+0000) Maven home: /opt/apache-maven-3.0.4 Java version: 1.6.0_24, vendor: Sun Microsystems Inc. Java home: /usr/lib/jvm/java-6-openjdk/jre Default locale: en_US, platform encoding: UTF-8 OS name: "linux", version: "3.0.0-12-virtual", arch: "amd64", family: "unix" root@development2:/opt/android-sdk-linux/tools# ran the following two command as mention in below sudo apt-get update sudo apt-get install ia32-libs Problems with Eclipse and Android SDK http://developer.android.com/sdk/installing/index.html As error suggest i gave the path to android SDK in jenkins build config still im getting the error clean install -Dandroid.sdk.path=/opt/android-sdk-linux Can someone help me to resolve this. Thanks Error I'm Getting Waiting for Jenkins to finish collecting data mavenExecutionResult exceptions not empty message : Failed to execute goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources (default-generate-sources) on project base-template: Execution default-generate-sources of goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources failed: Path "/opt/android-sdk-linux/platforms" is not a directory. Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable ANDROID_HOME. cause : Execution default-generate-sources of goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources failed: Path "/opt/android-sdk-linux/platforms" is not a directory. Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable ANDROID_HOME. Stack trace : org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources (default-generate-sources) on project base-template: Execution default-generate-sources of goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources failed: Path "/opt/android-sdk-linux/platforms" is not a directory. Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable ANDROID_HOME. at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156) at org.jvnet.hudson.maven3.launcher.Maven3Launcher.main(Maven3Launcher.java:79) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.codehaus.plexus.classworlds.launcher.Launcher.launchStandard(Launcher.java:329) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:239) at org.jvnet.hudson.maven3.agent.Maven3Main.launch(Maven3Main.java:158) at hudson.maven.Maven3Builder.call(Maven3Builder.java:98) at hudson.maven.Maven3Builder.call(Maven3Builder.java:64) at hudson.remoting.UserRequest.perform(UserRequest.java:118) at hudson.remoting.UserRequest.perform(UserRequest.java:48) at hudson.remoting.Request$2.run(Request.java:326) at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-generate-sources of goal com.jayway.maven.plugins.android.generation2:android-maven-plugin:3.1.1:generate-sources failed: Path "/opt/android-sdk-linux/platforms" is not a directory. Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable ANDROID_HOME. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209) ... 27 more Caused by: com.jayway.maven.plugins.android.InvalidSdkException: Path "/opt/android-sdk-linux/platforms" is not a directory. Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable ANDROID_HOME. at com.jayway.maven.plugins.android.AndroidSdk.assertPathIsDirectory(AndroidSdk.java:125) at com.jayway.maven.plugins.android.AndroidSdk.getPlatformDirectories(AndroidSdk.java:285) at com.jayway.maven.plugins.android.AndroidSdk.findAvailablePlatforms(AndroidSdk.java:260) at com.jayway.maven.plugins.android.AndroidSdk.<init>(AndroidSdk.java:80) at com.jayway.maven.plugins.android.AbstractAndroidMojo.getAndroidSdk(AbstractAndroidMojo.java:844) at com.jayway.maven.plugins.android.phase01generatesources.GenerateSourcesMojo.generateR(GenerateSourcesMojo.java:329) at com.jayway.maven.plugins.android.phase01generatesources.GenerateSourcesMojo.execute(GenerateSourcesMojo.java:102) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101) ... 28 more channel stopped Finished: FAILURE* android home Echo root@development2:~# echo $ANDROID_HOME /opt/android-sdk-linux

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  • Developer Training – Various Options for Maximum Benefit – Part 4

    - by pinaldave
    Developer Training - Importance and Significance - Part 1 Developer Training – Employee Morals and Ethics – Part 2 Developer Training – Difficult Questions and Alternative Perspective - Part 3 Developer Training – Various Options for Developer Training – Part 4 Developer Training – A Conclusive Summary- Part 5 If you have been reading this series, by now you are aware of all the pros and cons that can come along with training.  We’ve asked and answered hard questions, and investigated them “whys” and “hows” of training.  Now it is time to talk about all the different kinds of training that are out there! On Job Training The most common type of training is on the job training.  Everyone receives this kind of education – even experts who come in to consult have to be taught where the printer, pens, and copy machines are.  If you are thinking about more concrete topics, though, on the job training can be some of the easiest to come across.  Picture this: someone in the company whom you really admire is hard at work on a project.  You come up to them and ask to help them out – if they are a busy developer, the odds are that they will say “yes, please!”   If you phrase your question as an offer of help, you can receive training without ever putting someone in the awkward position of acting as a mentor.  However, some people may want the task of being a mentor.  It can never hurt to ask.  Most people will be more than willing to pass their knowledge along. Extreme Programming If your company and coworkers are willing, you can even investigate Extreme Programming.  This is a type of programming that allows small teams to quickly develop code and products that are released with almost immediate user feedback.  You can find more information at http://www.extremeprogramming.org/.  If this is something your company could use, suggest it to your supervisor.  Even if they say no, it will make it clear that you are a go-getter who is interested in new and exciting projects.  If the answer is yes, then you have the opportunity to get some of the best on the job training around. In Person Training Click on Image to Enlarge When you say the word “training,” most people’s minds go back to the classroom, an image they are familiar with.  While training doesn’t always have to be in a traditional setting, because it is so familiar it can also be the most valuable type of training.  There are many ways to get training through a live instructor.  Some companies may be willing to send a representative to you, where employees will get training, sometimes food and coffee, and a live instructor who can answer questions immediately.  Sometimes these trainers are also able to do consultations at the same time, which can invaluable to a company.  If you are the one to asks your supervisor for a training session that can also be turned into a consultation, you may stick in their minds as an incredibly dedicated employee.  If you can’t find a representative, local colleges can also be a good resource for free or cheap classes – or they may have representatives coming who are willing to take on a few more students. Benefits of On Demand Developer Training Of course, you can often get the best of all these types of training with online or On Demand training.  You can get the benefit of a live instructor who is willing to answer questions (although in this case, usually through e-mail or other online venues), there are often real-world examples to follow along – like on the job training – and best of all you can learn whenever you have the time or need.  Did a problem with your server come up at midnight when all your supervisors are safe at home and probably in bed?  No problem!  On Demand training is especially useful if you need to slow down, pause, or rewind a training session.  Not even a real-life instructor can do that! When I was writing this blog post, I felt that each of the subject, which I have covered can be blog posts of itself. However, I wanted to keep the the blog post concise and so touch based on three major training aspects 1) On Job Training 2) In Person Training and 3) Online training. Here is the question for you – is there any other kind of training methods available, which are effective and one should consider it? If yes, what are those, I may write a follow up blog post on the same subject next week. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Developer Training, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • How to Use An Antivirus Boot Disc or USB Drive to Ensure Your Computer is Clean

    - by Chris Hoffman
    If your computer is infected with malware, running an antivirus within Windows may not be enough to remove it. If your computer has a rootkit, the malware may be able to hide itself from your antivirus software. This is where bootable antivirus solutions come in. They can clean malware from outside the infected Windows system, so the malware won’t be running and interfering with the clean-up process. The Problem With Cleaning Up Malware From Within Windows Standard antivirus software runs within Windows. If your computer is infected with malware, the antivirus software will have to do battle with the malware. Antivirus software will try to stop the malware and remove it, while the malware will attempt to defend itself and shut down the antivirus. For really nasty malware, your antivirus software may not be able to fully remove it from within Windows. Rootkits, a type of malware that hides itself, can be even trickier. A rootkit could load at boot time before other Windows components and prevent Windows from seeing it, hide its processes from the task manager, and even trick antivirus applications into believing that the rootkit isn’t running. The problem here is that the malware and antivirus are both running on the computer at the same time. The antivirus is attempting to fight the malware on its home turf — the malware can put up a fight. Why You Should Use an Antivirus Boot Disc Antivirus boot discs deal with this by approaching the malware from outside Windows. You boot your computer from a CD or USB drive containing the antivirus and it loads a specialized operating system from the disc. Even if your Windows installation is completely infected with malware, the special operating system won’t have any malware running within it. This means the antivirus program can work on the Windows installation from outside it. The malware won’t be running while the antivirus tries to remove it, so the antivirus can methodically locate and remove the harmful software without it interfering. Any rootkits won’t be able to set up the tricks they use at Windows boot time to hide themselves from the rest o the operating system. The antivirus will be able to see the rootkits and remove them. These tools are often referred to as “rescue disks.” They’re meant to be used when you need to rescue a hopelessly infected system. Bootable Antivirus Options As with any type of antivirus software, you have quite a few options. Many antivirus companies offer bootable antivirus systems based on their antivirus software. These tools are generally free, even when they’re offered by companies that specialized in paid antivirus solutions. Here are a few good options: avast! Rescue Disk – We like avast! for offering a capable free antivirus with good detection rates in independent tests. avast! now offers the ability to create an antivirus boot disc or USB drive. Just navigate to the Tools -> Rescue Disk option in the avast! desktop application to create bootable media. BitDefender Rescue CD – BitDefender always seems to receive good scores in independent tests, and the BitDefender Rescue CD offers the same antivirus engine in the form of a bootable disc. Kaspersky Rescue Disk – Kaspersky also receives good scores in independent tests and offers its own antivirus boot disc. These are just a handful of options. If you prefer another antivirus for some reason — Comodo, Norton, Avira, ESET, or almost any other antivirus product — you’ll probably find that it offers its own system rescue disk. How to Use an Antivirus Boot Disc Using an antivirus boot disc or USB drive is actually pretty simple. You’ll just need to find the antivirus boot disc you want to use and burn it to disc or install it on a USB drive. You can do this part on any computer, so you can create antivirus boot media on a clean computer and then take it to an infected computer. Insert the boot media into the infected computer and then reboot. The computer should boot from the removable media and load the secure antivirus environment. (If it doesn’t, you may need to change the boot order in your BIOS or UEFI firmware.) You can then follow the instructions on your screen to scan your Windows system for malware and remove it. No malware will be running in the background while you do this. Antivirus boot discs are useful because they allow you to detect and clean malware infections from outside an infected operating system. If the operating system is severely infected, it may not be possible to remove — or even detect — all the malware from within it. Image Credit: aussiegall on Flickr     

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  • SQL SERVER – PAGEIOLATCH_DT, PAGEIOLATCH_EX, PAGEIOLATCH_KP, PAGEIOLATCH_SH, PAGEIOLATCH_UP – Wait Type – Day 9 of 28

    - by pinaldave
    It is very easy to say that you replace your hardware as that is not up to the mark. In reality, it is very difficult to implement. It is really hard to convince an infrastructure team to change any hardware because they are not performing at their best. I had a nightmare related to this issue in a deal with an infrastructure team as I suggested that they replace their faulty hardware. This is because they were initially not accepting the fact that it is the fault of their hardware. But it is really easy to say “Trust me, I am correct”, while it is equally important that you put some logical reasoning along with this statement. PAGEIOLATCH_XX is such a kind of those wait stats that we would directly like to blame on the underlying subsystem. Of course, most of the time, it is correct – the underlying subsystem is usually the problem. From Book On-Line: PAGEIOLATCH_DT Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Destroy mode. Long waits may indicate problems with the disk subsystem. PAGEIOLATCH_EX Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Exclusive mode. Long waits may indicate problems with the disk subsystem. PAGEIOLATCH_KP Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Keep mode. Long waits may indicate problems with the disk subsystem. PAGEIOLATCH_SH Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Shared mode. Long waits may indicate problems with the disk subsystem. PAGEIOLATCH_UP Occurs when a task is waiting on a latch for a buffer that is in an I/O request. The latch request is in Update mode. Long waits may indicate problems with the disk subsystem. PAGEIOLATCH_XX Explanation: Simply put, this particular wait type occurs when any of the tasks is waiting for data from the disk to move to the buffer cache. ReducingPAGEIOLATCH_XX wait: Just like any other wait type, this is again a very challenging and interesting subject to resolve. Here are a few things you can experiment on: Improve your IO subsystem speed (read the first paragraph of this article, if you have not read it, I repeat that it is easy to say a step like this than to actually implement or do it). This type of wait stats can also happen due to memory pressure or any other memory issues. Putting aside the issue of a faulty IO subsystem, this wait type warrants proper analysis of the memory counters. If due to any reasons, the memory is not optimal and unable to receive the IO data. This situation can create this kind of wait type. Proper placing of files is very important. We should check file system for the proper placement of files – LDF and MDF on separate drive, TempDB on separate drive, hot spot tables on separate filegroup (and on separate disk), etc. Check the File Statistics and see if there is higher IO Read and IO Write Stall SQL SERVER – Get File Statistics Using fn_virtualfilestats. It is very possible that there are no proper indexes on the system and there are lots of table scans and heap scans. Creating proper index can reduce the IO bandwidth considerably. If SQL Server can use appropriate cover index instead of clustered index, it can significantly reduce lots of CPU, Memory and IO (considering cover index has much lesser columns than cluster table and all other it depends conditions). You can refer to the two articles’ links below previously written by me that talk about how to optimize indexes. Create Missing Indexes Drop Unused Indexes Updating statistics can help the Query Optimizer to render optimal plan, which can only be either directly or indirectly. I have seen that updating statistics with full scan (again, if your database is huge and you cannot do this – never mind!) can provide optimal information to SQL Server optimizer leading to efficient plan. Checking Memory Related Perfmon Counters SQLServer: Memory Manager\Memory Grants Pending (Consistent higher value than 0-2) SQLServer: Memory Manager\Memory Grants Outstanding (Consistent higher value, Benchmark) SQLServer: Buffer Manager\Buffer Hit Cache Ratio (Higher is better, greater than 90% for usually smooth running system) SQLServer: Buffer Manager\Page Life Expectancy (Consistent lower value than 300 seconds) Memory: Available Mbytes (Information only) Memory: Page Faults/sec (Benchmark only) Memory: Pages/sec (Benchmark only) Checking Disk Related Perfmon Counters Average Disk sec/Read (Consistent higher value than 4-8 millisecond is not good) Average Disk sec/Write (Consistent higher value than 4-8 millisecond is not good) Average Disk Read/Write Queue Length (Consistent higher value than benchmark is not good) Note: The information presented here is from my experience and there is no way that I claim it to be accurate. I suggest reading Book OnLine for further clarification. All of the discussions of Wait Stats in this blog is generic and varies from system to system. It is recommended that you test this on a development server before implementing it to a production server. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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  • Aamir Khan’s Satyamev Jayate stirs a movement

    - by Gopinath
    Bollywood actor Aamir Khan is known for his dedication and hard work in inspiring millions of viewers though movies by discussing social problems and motivating people to solve them. His movie Rang De Basanthi seeded Indian anti-corruption movement, Tare Zameen Par touched the problems faced by few challenged kids and the latest movie 3 idiots exposed how education institutions in India are producing lakhs of Donkeys out of colleges every year. He extended his dedication of serving the society to small screen with the launch of reality TV show Satyamev Jayate. Before you start misjudging it as one of those non sense drama / entertaining reality shows, let me tell you that it is not a typical music, games, fight or dance reality show. Satyamev Jayate is all about the real people of India, their problems and how to tackle them.  This is not just a reality show, its movement to educate people about the social evils. Its been many years since I spent couple of hours  in front of TV as most of the programs are too cynical or does not add much value.  In my childhood I use to anxiously wait for Mahabarath or He-Man TV shows to start but after a two decades I waited anxiously for the start of Satyamev Jayate. The wait was worth and the 1 hours 30 minutes spent watching it meaningful. When was the last time you were so satisfied after watching a TV show and inspired to do something? I don’t remember. Today, the show focused on female foeticide and its impact. It showed women who were tortured and forced to abort female foetuses. On the show few brave women shared their experiences of giving birth to girl babies and rough times they are going through with their in-laws & husbands. The show not only focused on the problem but also on the root cause of the evil,  inspiring people working to tackle it and what every individual can do his part to solve it.  The best part of the show is,  its not a blame game. When there is a problem most of the people quickly get into identifying who is wrong and start blaming them instead of solve the actual problem.  Aamir did not blame anyone for female foeticide – neither the government who don’t impose strict rules, nor the doctors who abort girl babies to make money or the mother-in-laws & husbands who torcher girl baby mothers are blamed. He careful highlighted the problem, showed horrifying statistics and their impact on the future society and few inspiring people working to tackle the problem.  He touched heart and stirred a movement against the issue. First time ever I voted for a reality show through SMS and it’s for Satyamev Jayate. I’m proud to do so. Here are the few reactions of popular people, activists & media about the program @aamir_khan absolutely the best program I have seen on TV in recent past. Thanku for converting an idiot box into an inspirationsl medium — Kiran Bedi (@thekiranbedi) May 6, 2012 Satyamev Jayate proves tht TV 2 can b a tool of social change. — Shekhar Kapur (@shekharkapur) May 6, 2012 i absolutely loved #satyamevjayate. at least aamir is doing what all of us only talk about. — Harsha Bhogle (@bhogleharsha) May 6, 2012 Now Television will no longer be called an idiot box,the VISION of Television broadens up with#SatyamevJayate !!! — Madhur Bhandarkar (@mbhandarkar268) May 6, 2012 The Sunday 11am slot seems to have come back with a bang… #SatyamevJayate — atul kasbekar (@atulkasbekar) May 6, 2012   I was spellbound, says Prasoon Joshi – It’s a unique show. I was completely bowled over by it. It’s a never-done before concept Aamir Khan strikes the right chord with Satyamev Jayate – The format is quite crisp. Talking about the emotional connect, there are moments when your eyes well up with tears, but the various segments ensure there’s more content than emotional drama ‘Satyamev Jayate’ gutsy, sensible show: Viewers – From filmmakers to clinical psychologists to professors – everyone has given the thumbs up to Aamir Khan’s television show ‘Satyamev Jayate’, saying it is a gutsy, hard-hitting and sensible programme that strikes an emotional chord with the audiences. Aamir Khan’s TV debut ‘Satyamev Jayate’ takes Twitter by storm – The roads of the capital sported a deserted look around 11 am on Sunday morning, as everyone was hooked on to their TV sets. Did you watch the program? What is your opinion? I’m waiting for next 11 AM of next Sunday. Are you?

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  • Can't install wine (or ia32-libs) in Ubuntu 12.10 64 bit

    - by carestad
    As already pointed out here, people seems to have issues with installing wine in the latest version of Ubuntu. I'm suspecting this only happens with 64 bit users. For example, when trying to install wine, wine1.4, wine1.4:i386, wine1.5, wine1.5:i386, ia32-libs or ia32-libs:i386 with apt-get, I get a lot of dependency errors. Doing a sudo apt-get -f install doesn't seem to do the trick, neither does using aptitude. The errors I get is normally that the packages depend on some :i386 package, but installing those manually doesn't work either because they also have dependency issues (isn't APT supposed to do this automatically?!). I also downloaded CrossOver today and tried installing the .deb manually, but the dependency issues show up there as well. When running sudo apt-get -f install after trying to install the CrossOver .deb, apt-get wants to purge the following packages: ia32-crossover intel-gpu-tools libdrm-nouveau2 libgl1-mesa-dri libva-x11-1 ubuntu-desktop vlc xorg xserver-xorg-video-ati xserver-xorg-video-intel xserver-xorg-video-modesetting xserver-xorg-video-openchrome xserver-xorg-video-radeon xserver-xorg-video-vmware What I've tried so far (and didn't work): Installing synaptic, reloading my repositories, searching for ia32 and installing ia32-libs. Using Ubuntu Software Center to install Wine and ia32-libs. Using apt-get and aptitude to install all the differend varieties of the wine packages, both with and without the :i386 and -amd64 suffixes in package names. Disabling the universe and multiverse repos, run a sudo apt-get update and then re-enable them again. Boot a newly downloaded Ubuntu 12.10 x64 live USB and try to install all the different packages there. What I haven't tried (yet): Boot a newly downloaded Ubuntu 12.10 x32 image and try to install wine there (I'm just guessing that will work). Reinstall Ubuntu. Throw my computer out a window. wine alexander@cosmo:~$ LANGUAGE=en_US sudo apt-get install wine Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine : Depends: wine1.5 but it is not going to be installed E: Unable to correct problems, you have held broken packages. wine-1.4 alexander@cosmo:~$ LANGUAGE=en_US sudo apt-get install wine1.4 (...) The following packages have unmet dependencies: wine1.4 : Depends: wine1.4-i386 (= 1.4.1-0ubuntu1) E: Unable to correct problems, you have held broken packages. wine-1.4:i386 alexander@cosmo:~$ LANGUAGE=en_US sudo apt-get install wine1.4:i386 (...) The following packages have unmet dependencies: libaudio2:i386 : Depends: libxt6:i386 but it is not going to be installed libqtgui4:i386 : Depends: libsm6:i386 but it is not going to be installed libunity-webapps0 : Depends: unity-webapps-service but it is not going to be installed openssh-client : Depends: adduser (>= 3.10) but it is not going to be installed Depends: passwd ssh : Depends: openssh-server wine1.4:i386 : Depends: wine1.4-i386:i386 (= 1.4.1-0ubuntu1) Depends: binfmt-support:i386 (>= 1.1.2) Depends: procps:i386 Recommends: cups-bsd:i386 Recommends: gnome-exe-thumbnailer:i386 but it is not installable or kde-runtime:i386 but it is not going to be installed Recommends: ttf-droid:i386 but it is not installable Recommends: ttf-liberation:i386 but it is not installable Recommends: ttf-mscorefonts-installer:i386 Recommends: ttf-umefont:i386 but it is not installable Recommends: ttf-unfonts-core:i386 but it is not installable Recommends: ttf-wqy-microhei:i386 but it is not installable Recommends: winbind:i386 Recommends: winetricks:i386 but it is not going to be installed Recommends: xdg-utils:i386 but it is not installable E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. wine-1.5 alexander@cosmo:~$ sudo apt-get install wine1.5 (...) The following packages have unmet dependencies: wine1.5 : Depends: wine1.5-i386 (= 1.5.16-0ubuntu1) E: Unable to correct problems, you have held broken packages. wine-1.5:i386 alexander@cosmo:~$ sudo apt-get install wine1.5:i386 (...) The following packages have unmet dependencies: libaudio2:i386 : Depends: libxt6:i386 but it is not going to be installed libqtgui4:i386 : Depends: libsm6:i386 but it is not going to be installed libunity-webapps0 : Depends: unity-webapps-service but it is not going to be installed openssh-client : Depends: adduser (>= 3.10) but it is not going to be installed Depends: passwd ssh : Depends: openssh-server wine1.5:i386 : Depends: wine1.5-i386:i386 (= 1.5.16-0ubuntu1) but it is not going to be installed Depends: binfmt-support:i386 (>= 1.1.2) Depends: procps:i386 Recommends: cups-bsd:i386 Recommends: gnome-exe-thumbnailer:i386 but it is not installable or kde-runtime:i386 but it is not going to be installed Recommends: ttf-droid:i386 but it is not installable Recommends: ttf-liberation:i386 but it is not installable Recommends: ttf-mscorefonts-installer:i386 Recommends: ttf-umefont:i386 but it is not installable Recommends: ttf-unfonts-core:i386 but it is not installable Recommends: ttf-wqy-microhei:i386 but it is not installable Recommends: winbind:i386 Recommends: winetricks:i386 but it is not going to be installed Recommends: xdg-utils:i386 but it is not installable E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages. ia32-libs alexander@cosmo:~$ sudo apt-get install ia32-libs (...) The following packages have unmet dependencies: ia32-libs : Depends: ia32-libs-multiarch E: Unable to correct problems, you have held broken packages. ia32-libs:i386 alexander@cosmo:~$ sudo apt-get install ia32-libs:i386 (...) Package ia32-libs:i386 is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: lib32z1 lib32ncurses5 lib32bz2-1.0 lib32asound2 E: Package 'ia32-libs:i386' has no installation candidate

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