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• Technical details for Server 2012 de-duplication feature

  - by syneticon-dj

  Now that Windows Server 2012 comes with de-duplication features for NTFS volumes I am having a hard time finding technical details about it. I can deduce from the TechNet documentation that the de-duplication action itself is an asynchronous process - not unlike how the SIS Groveler used to work - but there is virtually no detail about the implementation (algorithms used, resources needed, even the info on performance considerations is nothing but a bunch rule-of-thumb-style recommendations). Insights and pointers are greatly appreciated, a comparison to Solaris' ZFS de-duplication efficiency for a set of scenarios would be wonderful.

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• What is the Mac OS X equivalent of a Microsoft DOS batch file?

  - by Jason Webb

  I am relatively new to the mac, and other than writing python scripts I can't figure out how to automate certain tasks like I would have in windows with a batch file. Pointers and links to documentation would be appreciated.

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• How do I determine the linux server software/version and email server software/version running

  - by rwilkins

  I just inherited this a single linux box running pop/smtp for a small office (25 users). I'm new to Linux. I think the box is running Debian GNU/Linux 5.0 as the server (this is bannered accross the screen occassionally) but not sure of the release/kernal/build etc. I need to be certain of both the server os and email linux versions in order to perform research, admin and support. Any help/pointers on how to do this is much appreciated.

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• Sum if ONLY all the cells have a value?

  - by Mike

  Hi I need to sum 9 cells of data, each one on a separate sheet, but always in the same location. I only want a figure returned when all the cells have data, even if it's a 0. But, if one of the cells is blank I want a blank return. I'm trying to get my head around, making it up actually, where the IFs and ISBLANK and SUMS would go. Any pointers would be greatly appreciated. SUM(IF(ISBLANK(RANGEA,OR(RANGEB),0,ALLRANGES))) Many thanks Michael

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• Rewrite C++ code into Objective C

  - by Phil_M

  Hello I got some C++ Sourcecode that I would like to rewrite into Objective C. It would help me alot if someone could write me a header file for this Code. When I get the Headerfile I would be able to rewrite the rest of the Sourcecode. It would be very nice if someone could help me please. Thanks I will poste the sourcecode here: #include <stdlib.h> #include <iostream.h> #define STATES 5 int transitionTable[STATES][STATES]; // function declarations: double randfloat (void); int chooseNextEventFromTable (int current, int table[STATES][STATES]); int chooseNextEventFromTransitionTablee (int currentState); void setTable (int value, int table[STATES][STATES]); ////////////////////////////////////////////////////////////////////////// int main(void) { int i; // for demo purposes: transitionTable[0][0] = 0; transitionTable[0][1] = 20; transitionTable[0][2] = 30; transitionTable[0][3] = 50; transitionTable[0][4] = 0; transitionTable[1][0] = 35; transitionTable[1][1] = 25; transitionTable[1][2] = 20; transitionTable[1][3] = 30; transitionTable[1][4] = 0; transitionTable[2][0] = 70; transitionTable[2][1] = 0; transitionTable[2][2] = 15; transitionTable[2][3] = 0; transitionTable[2][4] = 15; transitionTable[3][0] = 0; transitionTable[3][1] = 25; transitionTable[3][2] = 25; transitionTable[3][3] = 0; transitionTable[3][4] = 50; transitionTable[4][0] = 13; transitionTable[4][1] = 17; transitionTable[4][2] = 22; transitionTable[4][3] = 48; transitionTable[4][4] = 0; int currentState = 0; for (i=0; i<10; i++) { std::cout << currentState << " "; currentState = chooseNextEventFromTransitionTablee(currentState); } return 0; }; ////////////////////////////////////////////////////////////////////////// ////////////////////////////// // // chooseNextEventFromTransitionTable -- choose the next note. // int chooseNextEventFromTransitionTablee(int currentState) { int targetSum = 0; int sum = 0; int targetNote = 0; int totalevents = 0; int i; currentState = currentState % STATES; // remove any octave value for (i=0; i<STATES; i++) { totalevents += transitionTable[currentState][i]; } targetSum = (int)(randfloat() * totalevents + 0.5); while (targetNote < STATES && sum+transitionTable[currentState][targetNote] < targetSum) { sum += transitionTable[currentState][targetNote]; targetNote++; } return targetNote; } ////////////////////////////// // // randfloat -- returns a random number between 0.0 and 1.0. // double randfloat(void) { return (double)rand()/RAND_MAX; } ////////////////////////////// // // setTable -- set all values in the transition table to the given value. // void setTable(int value, int table[STATES][STATES]) { int i, j; for (i=0; i<STATES; i++) { for (j=0; j<STATES; j++) { table[i][j] = value; } } }

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• How to configure `lxc` like `openvz`

  - by cam

  I was going to fire up a OpenVZ node to test out some software, but it looks like OpenVZ is no longer supported in Ubuntu (deprecated in favor of lxc. It looks like can do more than simply virtualize an entire system, and I'm having trouble finding good documentation that would explain how I can start a virtualized system (using an openvz template or something). Could someone give me some pointers or direct me to some good documentation?

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• Multi mouse, keyboard and monitors

  - by Click Ok

  I've got a USB hub with 4 ports, and I've plugged 2 usb keyboards and 2 usb mouses. They work very fine. I've setup'ed 2 monitors too, so I was thinking about the possibility of the mouse and keyboards works independent one of another. I want two mouse pointers (I think each with different colors) and 2 keyboard cursors. I think it a nice idea, but I don't know if this is possible... :( PS: My OS is Windows7

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• 10000's+ UI elements, bind or draw?

  - by jpiccolo

  I am drawing a header for a timeline control. It looks like this: I go to 0.01 millisecond per line, so for a 10 minute timeline I am looking at drawing 60000 lines + 6000 labels. This takes a while, ~10 seconds. I would like to offload this from the UI thread. My code is currently: private void drawHeader() { Header.Children.Clear(); switch (viewLevel) { case ViewLevel.MilliSeconds100: double hWidth = Header.Width; this.drawHeaderLines(new TimeSpan(0, 0, 0, 0, 10), 100, 5, hWidth); //Was looking into background worker to off load UI //backgroundWorker = new BackgroundWorker(); //backgroundWorker.DoWork += delegate(object sender, DoWorkEventArgs args) // { // this.drawHeaderLines(new TimeSpan(0, 0, 0, 0, 10), 100, 5, hWidth); // }; //backgroundWorker.RunWorkerAsync(); break; } } private void drawHeaderLines(TimeSpan timeStep, int majorEveryXLine, int distanceBetweenLines, double headerWidth) { var currentTime = new TimeSpan(0, 0, 0, 0, 0); const int everyXLine100 = 10; double currentX = 0; var currentLine = 0; while (currentX < headerWidth) { var l = new Line { ToolTip = currentTime.ToString(@"hh\:mm\:ss\.fff"), StrokeThickness = 1, X1 = 0, X2 = 0, Y1 = 30, Y2 = 25 }; if (((currentLine % majorEveryXLine) == 0) && currentLine != 0) { l.StrokeThickness = 2; l.Y2 = 15; var textBlock = new TextBlock { Text = l.ToolTip.ToString(), FontSize = 8, FontFamily = new FontFamily("Tahoma"), Foreground = new SolidColorBrush(Color.FromRgb(255, 255, 255)) }; Canvas.SetLeft(textBlock, (currentX - 22)); Canvas.SetTop(textBlock, 0); Header.Children.Add(textBlock); } if ((((currentLine % everyXLine100) == 0) && currentLine != 0) && (currentLine % majorEveryXLine) != 0) { l.Y2 = 20; var textBlock = new TextBlock { Text = string.Format(".{0}", TimeSpan.Parse(l.ToolTip.ToString()).Milliseconds), FontSize = 8, FontFamily = new FontFamily("Tahoma"), Foreground = new SolidColorBrush(Color.FromRgb(192, 192, 192)) }; Canvas.SetLeft(textBlock, (currentX - 8)); Canvas.SetTop(textBlock, 8); Header.Children.Add(textBlock); } l.Stroke = new SolidColorBrush(Color.FromRgb(255, 255, 255)); Header.Children.Add(l); Canvas.SetLeft(l, currentX); currentX += distanceBetweenLines; currentLine++; currentTime += timeStep; } } I had looked into BackgroundWorker, except you can't create UI elements on a non-UI thread. Is it possible at all to do drawHeaderLines in a non-UI thread? Could I use data binding for drawing the lines? Would this help with UI responsiveness? I would imagine I can use databinding, but the Styling is probably beyond my current WPF ability (coming from winforms and trying to learn what all these style objects are and binding them). Would anyone be able to supply a starting point for tempting this out? Or Google a tutorial that would get me started?

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• Passing multiple simple POST Values to ASP.NET Web API

  - by Rick Strahl

  A few weeks backs I posted a blog post  about what does and doesn't work with ASP.NET Web API when it comes to POSTing data to a Web API controller. One of the features that doesn't work out of the box - somewhat unexpectedly -  is the ability to map POST form variables to simple parameters of a Web API method. For example imagine you have this form and you want to post this data to a Web API end point like this via AJAX: <form> Name: <input type="name" name="name" value="Rick" /> Value: <input type="value" name="value" value="12" /> Entered: <input type="entered" name="entered" value="12/01/2011" /> <input type="button" id="btnSend" value="Send" /> </form> <script type="text/javascript"> $("#btnSend").click( function() { $.post("samples/PostMultipleSimpleValues?action=kazam", $("form").serialize(), function (result) { alert(result); }); }); </script> or you might do this more explicitly by creating a simple client map and specifying the POST values directly by hand:$.post("samples/PostMultipleSimpleValues?action=kazam", { name: "Rick", value: 1, entered: "12/01/2012" }, $("form").serialize(), function (result) { alert(result); }); On the wire this generates a simple POST request with Url Encoded values in the content:POST /AspNetWebApi/samples/PostMultipleSimpleValues?action=kazam HTTP/1.1 Host: localhost User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:15.0) Gecko/20100101 Firefox/15.0.1 Accept: application/json Connection: keep-alive Content-Type: application/x-www-form-urlencoded; charset=UTF-8 X-Requested-With: XMLHttpRequest Referer: http://localhost/AspNetWebApi/FormPostTest.html Content-Length: 41 Pragma: no-cache Cache-Control: no-cachename=Rick&value=12&entered=12%2F10%2F2011 Seems simple enough, right? We are basically posting 3 form variables and 1 query string value to the server. Unfortunately Web API can't handle request out of the box. If I create a method like this:[HttpPost] public string PostMultipleSimpleValues(string name, int value, DateTime entered, string action = null) { return string.Format("Name: {0}, Value: {1}, Date: {2}, Action: {3}", name, value, entered, action); }You'll find that you get an HTTP 404 error and { "Message": "No HTTP resource was found that matches the request URI…"} Yes, it's possible to pass multiple POST parameters of course, but Web API expects you to use Model Binding for this - mapping the post parameters to a strongly typed .NET object, not to single parameters. Alternately you can also accept a FormDataCollection parameter on your API method to get a name value collection of all POSTed values. If you're using JSON only, using the dynamic JObject/JValue objects might also work. ModelBinding is fine in many use cases, but can quickly become overkill if you only need to pass a couple of simple parameters to many methods. Especially in applications with many, many AJAX callbacks the 'parameter mapping type' per method signature can lead to serious class pollution in a project very quickly. Simple POST variables are also commonly used in AJAX applications to pass data to the server, even in many complex public APIs. So this is not an uncommon use case, and - maybe more so a behavior that I would have expected Web API to support natively. The question "Why aren't my POST parameters mapping to Web API method parameters" is already a frequent one… So this is something that I think is fairly important, but unfortunately missing in the base Web API installation. Creating a Custom Parameter Binder Luckily Web API is greatly extensible and there's a way to create a custom Parameter Binding to provide this functionality! Although this solution took me a long while to find and then only with the help of some folks Microsoft (thanks Hong Mei!!!), it's not difficult to hook up in your own projects. It requires one small class and a GlobalConfiguration hookup. Web API parameter bindings allow you to intercept processing of individual parameters - they deal with mapping parameters to the signature as well as converting the parameters to the actual values that are returned. Here's the implementation of the SimplePostVariableParameterBinding class:public class SimplePostVariableParameterBinding : HttpParameterBinding { private const string MultipleBodyParameters = "MultipleBodyParameters"; public SimplePostVariableParameterBinding(HttpParameterDescriptor descriptor) : base(descriptor) { } /// <summary> /// Check for simple binding parameters in POST data. Bind POST /// data as well as query string data /// </summary> public override Task ExecuteBindingAsync(ModelMetadataProvider metadataProvider, HttpActionContext actionContext, CancellationToken cancellationToken) { // Body can only be read once, so read and cache it NameValueCollection col = TryReadBody(actionContext.Request); string stringValue = null; if (col != null) stringValue = col[Descriptor.ParameterName]; // try reading query string if we have no POST/PUT match if (stringValue == null) { var query = actionContext.Request.GetQueryNameValuePairs(); if (query != null) { var matches = query.Where(kv => kv.Key.ToLower() == Descriptor.ParameterName.ToLower()); if (matches.Count() > 0) stringValue = matches.First().Value; } } object value = StringToType(stringValue); // Set the binding result here SetValue(actionContext, value); // now, we can return a completed task with no result TaskCompletionSource<AsyncVoid> tcs = new TaskCompletionSource<AsyncVoid>(); tcs.SetResult(default(AsyncVoid)); return tcs.Task; } private object StringToType(string stringValue) { object value = null; if (stringValue == null) value = null; else if (Descriptor.ParameterType == typeof(string)) value = stringValue; else if (Descriptor.ParameterType == typeof(int)) value = int.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(Int32)) value = Int32.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(Int64)) value = Int64.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(decimal)) value = decimal.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(double)) value = double.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(DateTime)) value = DateTime.Parse(stringValue, CultureInfo.CurrentCulture); else if (Descriptor.ParameterType == typeof(bool)) { value = false; if (stringValue == "true" || stringValue == "on" || stringValue == "1") value = true; } else value = stringValue; return value; } /// <summary> /// Read and cache the request body /// </summary> /// <param name="request"></param> /// <returns></returns> private NameValueCollection TryReadBody(HttpRequestMessage request) { object result = null; // try to read out of cache first if (!request.Properties.TryGetValue(MultipleBodyParameters, out result)) { // parsing the string like firstname=Hongmei&lastname=Ge result = request.Content.ReadAsFormDataAsync().Result; request.Properties.Add(MultipleBodyParameters, result); } return result as NameValueCollection; } private struct AsyncVoid { } }   The ExecuteBindingAsync method is fired for each parameter that is mapped and sent for conversion. This custom binding is fired only if the incoming parameter is a simple type (that gets defined later when I hook up the binding), so this binding never fires on complex types or if the first type is not a simple type. For the first parameter of a request the Binding first reads the request body into a NameValueCollection and caches that in the request.Properties collection. The request body can only be read once, so the first parameter request reads it and then caches it. Subsequent parameters then use the cached POST value collection. Once the form collection is available the value of the parameter is read, and the value is translated into the target type requested by the Descriptor. SetValue writes out the value to be mapped. Once you have the ParameterBinding in place, the binding has to be assigned. This is done along with all other Web API configuration tasks at application startup in global.asax's Application_Start:GlobalConfiguration.Configuration.ParameterBindingRules .Insert(0, (HttpParameterDescriptor descriptor) => { var supportedMethods = descriptor.ActionDescriptor.SupportedHttpMethods; // Only apply this binder on POST and PUT operations if (supportedMethods.Contains(HttpMethod.Post) || supportedMethods.Contains(HttpMethod.Put)) { var supportedTypes = new Type[] { typeof(string), typeof(int), typeof(decimal), typeof(double), typeof(bool), typeof(DateTime) }; if (supportedTypes.Where(typ => typ == descriptor.ParameterType).Count() > 0) return new SimplePostVariableParameterBinding(descriptor); } // let the default bindings do their work return null; });   The ParameterBindingRules.Insert method takes a delegate that checks which type of requests it should handle. The logic here checks whether the request is POST or PUT and whether the parameter type is a simple type that is supported. Web API calls this delegate once for each method signature it tries to map and the delegate returns null to indicate it's not handling this parameter, or it returns a new parameter binding instance - in this case the SimplePostVariableParameterBinding. Once the parameter binding and this hook up code is in place, you can now pass simple POST values to methods with simple parameters. The examples I showed above should now work in addition to the standard bindings. Summary Clearly this is not easy to discover. I spent quite a bit of time digging through the Web API source trying to figure this out on my own without much luck. It took Hong Mei at Micrsoft to provide a base example as I asked around so I can't take credit for this solution :-). But once you know where to look, Web API is brilliantly extensible to make it relatively easy to customize the parameter behavior. I'm very stoked that this got resolved  - in the last two months I've had two customers with projects that decided not to use Web API in AJAX heavy SPA applications because this POST variable mapping wasn't available. This might actually change their mind to still switch back and take advantage of the many great features in Web API. I too frequently use plain POST variables for communicating with server AJAX handlers and while I could have worked around this (with untyped JObject or the Form collection mostly), having proper POST to parameter mapping makes things much easier. I said this in my last post on POST data and say it again here: I think POST to method parameter mapping should have been shipped in the box with Web API, because without knowing about this limitation the expectation is that simple POST variables map to parameters just like query string values do. I hope Microsoft considers including this type of functionality natively in the next version of Web API natively or at least as a built-in HttpParameterBinding that can be just added. This is especially true, since this binding doesn't affect existing bindings. Resources SimplePostVariableParameterBinding Source on GitHub Global.asax hookup source Mapping URL Encoded Post Values in  ASP.NET Web API© Rick Strahl, West Wind Technologies, 2005-2012Posted in Web Api  AJAX   Tweet !function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src="//platform.twitter.com/widgets.js";fjs.parentNode.insertBefore(js,fjs);}}(document,"script","twitter-wjs"); (function() { var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true; po.src = 'https://apis.google.com/js/plusone.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s); })();

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• Move Files from a Failing PC with an Ubuntu Live CD

  - by Trevor Bekolay

  You’ve loaded the Ubuntu Live CD to salvage files from a failing system, but where do you store the recovered files? We’ll show you how to store them on external drives, drives on the same PC, a Windows home network, and other locations. We’ve shown you how to recover data like a forensics expert, but you can’t store recovered files back on your failed hard drive! There are lots of ways to transfer the files you access from an Ubuntu Live CD to a place that a stable Windows machine can access them. We’ll go through several methods, starting each section from the Ubuntu desktop – if you don’t yet have an Ubuntu Live CD, follow our guide to creating a bootable USB flash drive, and then our instructions for booting into Ubuntu. If your BIOS doesn’t let you boot using a USB flash drive, don’t worry, we’ve got you covered! Use a Healthy Hard Drive If your computer has more than one hard drive, or your hard drive is healthy and you’re in Ubuntu for non-recovery reasons, then accessing your hard drive is easy as pie, even if the hard drive is formatted for Windows. To access a hard drive, it must first be mounted. To mount a healthy hard drive, you just have to select it from the Places menu at the top-left of the screen. You will have to identify your hard drive by its size. Clicking on the appropriate hard drive mounts it, and opens it in a file browser. You can now move files to this hard drive by drag-and-drop or copy-and-paste, both of which are done the same way they’re done in Windows. Once a hard drive, or other external storage device, is mounted, it will show up in the /media directory. To see a list of currently mounted storage devices, navigate to /media by clicking on File System in a File Browser window, and then double-clicking on the media folder. Right now, our media folder contains links to the hard drive, which Ubuntu has assigned a terribly uninformative label, and the PLoP Boot Manager CD that is currently in the CD-ROM drive. Connect a USB Hard Drive or Flash Drive An external USB hard drive gives you the advantage of portability, and is still large enough to store an entire hard disk dump, if need be. Flash drives are also very quick and easy to connect, though they are limited in how much they can store. When you plug a USB hard drive or flash drive in, Ubuntu should automatically detect it and mount it. It may even open it in a File Browser automatically. Since it’s been mounted, you will also see it show up on the desktop, and in the /media folder. Once it’s been mounted, you can access it and store files on it like you would any other folder in Ubuntu. If, for whatever reason, it doesn’t mount automatically, click on Places in the top-left of your screen and select your USB device. If it does not show up in the Places list, then you may need to format your USB drive. To properly remove the USB drive when you’re done moving files, right click on the desktop icon or the folder in /media and select Safely Remove Drive. If you’re not given that option, then Eject or Unmount will effectively do the same thing. Connect to a Windows PC on your Local Network If you have another PC or a laptop connected through the same router (wired or wireless) then you can transfer files over the network relatively quickly. To do this, we will share one or more folders from the machine booted up with the Ubuntu Live CD over the network, letting our Windows PC grab the files contained in that folder. As an example, we’re going to share a folder on the desktop called ToShare. Right-click on the folder you want to share, and click Sharing Options. A Folder Sharing window will pop up. Check the box labeled Share this folder. A window will pop up about the sharing service. Click the Install service button. Some files will be downloaded, and then installed. When they’re done installing, you’ll be appropriately notified. You will be prompted to restart your session. Don’t worry, this won’t actually log you out, so go ahead and press the Restart session button. The Folder Sharing window returns, with Share this folder now checked. Edit the Share name if you’d like, and add checkmarks in the two checkboxes below the text fields. Click Create Share. Nautilus will ask your permission to add some permissions to the folder you want to share. Allow it to Add the permissions automatically. The folder is now shared, as evidenced by the new arrows above the folder’s icon. At this point, you are done with the Ubuntu machine. Head to your Windows PC, and open up Windows Explorer. Click on Network in the list on the left, and you should see a machine called UBUNTU in the right pane. Note: This example is shown in Windows 7; the same steps should work for Windows XP and Vista, but we have not tested them. Double-click on UBUNTU, and you will see the folder you shared earlier! As well as any other folders you’ve shared from Ubuntu. Double click on the folder you want to access, and from there, you can move the files from the machine booted with Ubuntu to your Windows PC. Upload to an Online Service There are many services online that will allow you to upload files, either temporarily or permanently. As long as you aren’t transferring an entire hard drive, these services should allow you to transfer your important files from the Ubuntu environment to any other machine with Internet access. We recommend compressing the files that you want to move, both to save a little bit of bandwidth, and to save time clicking on files, as uploading a single file will be much less work than a ton of little files. To compress one or more files or folders, select them, and then right-click on one of the members of the group. Click Compress…. Give the compressed file a suitable name, and then select a compression format. We’re using .zip because we can open it anywhere, and the compression rate is acceptable. Click Create and the compressed file will show up in the location selected in the Compress window. Dropbox If you have a Dropbox account, then you can easily upload files from the Ubuntu environment to Dropbox. There is no explicit limit on the size of file that can be uploaded to Dropbox, though a free account begins with a total limit of 2 GB of files in total. Access your account through Firefox, which can be opened by clicking on the Firefox logo to the right of the System menu at the top of the screen. Once into your account, press the Upload button on top of the main file list. Because Flash is not installed in the Live CD environment, you will have to switch to the basic uploader. Click Browse…find your compressed file, and then click Upload file. Depending on the size of the file, this could take some time. However, once the file has been uploaded, it should show up on any computer connected through Dropbox in a matter of minutes. Google Docs Google Docs allows the upload of any type of file – making it an ideal place to upload files that we want to access from another computer. While your total allocation of space varies (mine is around 7.5 GB), there is a per-file maximum of 1 GB. Log into Google Docs, and click on the Upload button at the top left of the page. Click Select files to upload and select your compressed file. For safety’s sake, uncheck the checkbox concerning converting files to Google Docs format, and then click Start upload. Go Online – Through FTP If you have access to an FTP server – perhaps through your web hosting company, or you’ve set up an FTP server on a different machine – you can easily access the FTP server in Ubuntu and transfer files. Just make sure you don’t go over your quota if you have one. You will need to know the address of the FTP server, as well as the login information. Click on Places > Connect to Server… Choose the FTP (with login) Service type, and fill in your information. Adding a bookmark is optional, but recommended. You will be asked for your password. You can choose to remember it until you logout, or indefinitely. You can now browse your FTP server just like any other folder. Drop files into the FTP server and you can retrieve them from any computer with an Internet connection and an FTP client. Conclusion While at first the Ubuntu Live CD environment may seem claustrophobic, it has a wealth of options for connecting to peripheral devices, local computers, and machines on the Internet – and this article has only scratched the surface. Whatever the storage medium, Ubuntu’s got an interface for it! Similar Articles Productive Geek Tips Backup Your Windows Live Writer SettingsMove a Window Without Clicking the Titlebar in UbuntuRecover Deleted Files on an NTFS Hard Drive from a Ubuntu Live CDCreate a Bootable Ubuntu USB Flash Drive the Easy WayReset Your Ubuntu Password Easily from the Live CD TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows Tech Fanboys Field Guide Check these Awesome Chrome Add-ons iFixit Offers Gadget Repair Manuals Online Vista style sidebar for Windows 7 Create Nice Charts With These Web Based Tools Track Daily Goals With 42Goals

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• Clustering Basics and Challenges

  - by Karoly Vegh

  For upcoming posts it seemed to be a good idea to dedicate some time for cluster basic concepts and theory. This post misses a lot of details that would explode the articlesize, should you have questions, do not hesitate to ask them in the comments.  The goal here is to get some concepts straight. I can't promise to give you an overall complete definitions of cluster, cluster agent, quorum, voting, fencing, split brain condition, so the following is more of an explanation. Here we go. -------- Cluster, HA, failover, switchover, scalability -------- An attempted definition of a Cluster: A cluster is a set (2+) server nodes dedicated to keep application services alive, communicating through the cluster software/framework with eachother, test and probe health status of servernodes/services and with quorum based decisions and with switchover/failover techniques keep the application services running on them available. That is, should a node that runs a service unexpectedly lose functionality/connection, the other ones would take over the and run the services, so that availability is guaranteed. To provide availability while strictly sticking to a consistent clusterconfiguration is the main goal of a cluster.  At this point we have to add that this defines a HA-cluster, a High-Availability cluster, where the clusternodes are planned to run the services in an active-standby, or failover fashion. An example could be a single instance database. Some applications can be run in a distributed or scalable fashion. In the latter case instances of the application run actively on separate clusternodes serving servicerequests simultaneously. An example for this version could be a webserver that forwards connection requests to many backend servers in a round-robin way. Or a database running in active-active RAC setup.  -------- Cluster arhitecture, interconnect, topologies -------- Now, what is a cluster made of? Servers, right. These servers (the clusternodes) need to communicate. This of course happens over the network, usually over dedicated network interfaces interconnecting all the clusternodes. These connection are called interconnects.How many clusternodes are in a cluster? There are different cluster topologies. The most simple one is a clustered pair topology, involving only two clusternodes:  There are several more topologies, clicking the image above will take you to the relevant documentation. Also, to answer the question Solaris Cluster allows you to run up to 16 servers in a cluster. Where shall these clusternodes be placed? A very important question. The right answer is: It depends on what you plan to achieve with the cluster. Do you plan to avoid only a server outage? Then you can place them right next to eachother in the datacenter. Do you need to avoid DataCenter outage? In that case of course you should place them at least in different fire zones. Or in two geographically distant DataCenters to avoid disasters like floods, large-scale fires or power outages. We call this a stretched- or campus cluster, the clusternodes being several kilometers away from eachother. To cover really large distances, you probably need to move to a GeoCluster, which is a different kind of animal.  What is a geocluster? A Geographic Cluster in Solaris Cluster terms is actually a metacluster between two, separate (locally-HA) clusters.  -------- Cluster resource types, agents, resources, resource groups -------- So how does the cluster manage my applications? The cluster needs to start, stop and probe your applications. If you application runs, the cluster needs to check regularly if the application state is healthy, does it respond over the network, does it have all the processes running, etc. This is called probing. If the cluster deems the application is in a faulty state, then it can try to restart it locally or decide to switch (stop on node A, start on node B) the service. Starting, stopping and probing are the three actions that a cluster agent does. There are many different kinds of agents included in Solaris Cluster, but you can build your own too. Examples are an agent that manages (mounts, moves) ZFS filesystems, or the Oracle DB HA agent that cares about the database, or an agent that moves a floating IP address between nodes. There are lots of other agents included for Apache, Tomcat, MySQL, Oracle DB, Oracle Weblogic, Zones, LDoms, NFS, DNS, etc.We also need to clarify the difference between a cluster resource and the cluster resource group.A cluster resource is something that is managed by a cluster agent. Cluster resource types are included in Solaris cluster (see above, e.g. HAStoragePlus, HA-Oracle, LogicalHost). You can group cluster resources into cluster resourcegroups, and switch these groups together from one node to another. To stick to the example above, to move an Oracle DB service from one node to another, you have to switch the group between nodes, and the agents of the cluster resources in the group will do the following:  On node A Shut down the DB Unconfigure the LogicalHost IP the DB Listener listens on unmount the filesystem   Then, on node B: mount the FS configure the IP  startup the DB -------- Voting, Quorum, Split Brain Condition, Fencing, Amnesia -------- How do the clusternodes agree upon their action? How do they decide which node runs what services? Another important question. Running a cluster is a strictly democratic thing.Every node has votes, and you need the majority of votes to have the deciding power. Now, this is usually no problem, clusternodes think very much all alike. Still, every action needs to be governed upon in a productive system, and has to be agreed upon. Agreeing is easy as long as the clusternodes all behave and talk to eachother over the interconnect. But if the interconnect is gone/down, this all gets tricky and confusing. Clusternodes think like this: "My job is to run these services. The other node does not answer my interconnect communication, it must be down. I'd better take control and run the services!". The problem is, as I have already mentioned, clusternodes very much think alike. If the interconnect is gone, they all assume the other node is down, and they all want to mount the data backend, enable the IP and run the database. Double IPs, double mounts, double DB instances - now that is trouble. Also, in a 2-node cluster they both have only 50% of the votes, that is, they themselves alone are not allowed to run a cluster.  This is where you need a quorum device. According to Wikipedia, the "requirement for a quorum is protection against totally unrepresentative action in the name of the body by an unduly small number of persons.". They need additional votes to run the cluster. For this requirement a 2-node cluster needs a quorum device or a quorum server. If the interconnect is gone, (this is what we call a split brain condition) both nodes start to race and try to reserve the quorum device to themselves. They do this, because the quorum device bears an additional vote, that could ensure majority (50% +1). The one that manages to lock the quorum device (e.g. if it's an FC LUN, it SCSI reserves it) wins the right to build/run a cluster, the other one - realizing he was late - panics/reboots to ensure the cluster config stays consistent.  Losing the interconnect isn't only endangering the availability of services, but it also endangers the cluster configuration consistence. Just imagine node A being down and during that the cluster configuration changes. Now node B goes down, and node A comes up. It isn't uptodate about the cluster configuration's changes so it will refuse to start a cluster, since that would lead to cluster amnesia, that is the cluster had some changes, but now runs with an older cluster configuration repository state, that is it's like it forgot about the changes.  Also, to ensure application data consistence, the clusternode that wins the race makes sure that a server that isn't part of or can't currently join the cluster can access the devices. This procedure is called fencing. This usually happens to storage LUNs via SCSI reservation.  Now, another important question: Where do I place the quorum disk?  Imagine having two sites, two separate datacenters, one in the north of the city and the other one in the south part of it. You run a stretched cluster in the clustered pair topology. Where do you place the quorum disk/server? If you put it into the north DC, and that gets hit by a meteor, you lose one clusternode, which isn't a problem, but you also lose your quorum, and the south clusternode can't keep the cluster running lacking the votes. This problem can't be solved with two sites and a campus cluster. You will need a third site to either place the quorum server to, or a third clusternode. Otherwise, lacking majority, if you lose the site that had your quorum, you lose the cluster. Okay, we covered the very basics. We haven't talked about virtualization support, CCR, ClusterFilesystems, DID devices, affinities, storage-replication, management tools, upgrade procedures - should those be interesting for you, let me know in the comments, along with any other questions. Given enough demand I'd be glad to write a followup post too. Now I really want to move on to the second part in the series: ClusterInstallation.  Oh, as for additional source of information, I recommend the documentation: http://docs.oracle.com/cd/E23623_01/index.html, and the OTN Oracle Solaris Cluster site: http://www.oracle.com/technetwork/server-storage/solaris-cluster/index.html

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• ODEE Green Field (Windows) Part 5 - Deployment and Validation

  - by AndyL-Oracle

  And here we are, almost finished with our installation of Oracle Documaker Enterprise Edition ("ODEE") in a Windows green field environment. Let's recap what we've done so far: In part 1, I went over the basic process that I intended to show with installing an ODEE on a green field server. I walked you through the basic installation of Oracle 11g database In part 2, I covered the installation of WebLogic application server. In part 3, I showed you how to install SOA Suite for WebLogic. In part 4, we did the first part of the installation of ODEE itself. What remains after all of that, is the deployment of the ODEE components onto the database and application server - so let's get to it! DATABASE First, we'll deploy the schemas to the database. The schemas are created during the ODEE installation according to the responses provided during the install process. To deploy the schemas, you'll need to login to the database server in your green field environment. Open a command line and CD into ODEE_HOME\documaker\database\oracle11g.Run SQLPLUS as SYSDBA and execute dmkr_admin.sql:  sqlplus / as sysdba @dmkr_admin.sql Execute dmkr_asline.sql, dmkr_admin_correspondence_example.sql.  If you require additional languages, run the appropriate SQL scripts (e.g. dmkr_asline_es.sql for Spanish). APPLICATION SERVER Next, we'll deploy the WebLogic domain and it's components - Documaker web services, Documaker Interactive, Documaker dashboard, and more. To deploy the components, you'll need to login to the application server in your green field environment. 1. Open Windows Explorer and navigate to ODEE_HOME\documaker\j2ee\weblogic\oracle11g\scripts.2. Using a text editor such as Notepad++, modify weblogic_installation_properties and set location of MIDDLEWARE_HOME and ODEE HOME. If you have used the defaults you’ll probably need to change the E: to C: and that’s it. Save the changes.3. Continuing in the same directory, use your text editor to modify set_middleware_env.cmd and set the drive and path to MIDDLEWARE_HOME. If you have used the defaults you’ll probably need to just change E: to C: and that’s it. Save the changes.4. In the same directory, execute wls_create_domain.cmd by double-clicking it. This should run to completion. If it does not, review any errors and correct them, and rerun the script.5. In the same directory, execute wls_add_correspondence.cmd by double-clicking it - again this should run to completion. 6. Next, we'll start the AdminServer - this is the main WebLogic domain server. To start it, use Windows Explorer and navigate to MIDDLEWARE_HOME\user_projects\domains\idocumaker_domain. Double-click startWebLogic.cmd and the server startup will begin. Once you see output that indicates that the server status changed to RUNNING you may proceed.  a. Note: if you saw database connection errors, you probably didn’t make sure your database name and connection type match. You can change this manually in the WebLogic Console. Open a browser and navigate to http://localhost:7001/console (replace localhost with the name of your application server host if you aren't opening the browser on the server), and login with the the weblogic credential you provided in the ODEE installation process. b. Once you're logged in, open Services?Data Sources. Select dmkr_admin and click Connection Pool.  c. The end of the URL should match the connection type you chose. If you chose ServiceName, the URL should be: jdbc:oracle:thin:@//<hostname>:1521/<serviceName> and if you chose SID, the URL should be: jdbc:oracle:thin:@//<hostname>:1521/<SIDname> d. An example serviceName is a fully qualified DNS-style name, e.g. "idmaker.us.oracle.com". (It does not need to actually resolve in DNS). An example SID is just a name, e.g. IDMAKER. e. Save the change and repeat for the data source dmkr_asline.  f. You will also need to make the same changes in the ODEE_HOME/documaker/docfactory/config/context/.bindings file - open the file in a text editor, locate the URL lines and make the appropriate change, then save the file.  7. Back in the ODEE_HOME\documaker\j2ee\weblogic\oracle11g\scripts directory, execute create_users_groups.cmd. 8. In the same directory, execute create_users_groups_correspondence_example.cmd. 9. Open a browser and navigate to http://localhost:7001/jpsquery. Replace localhost with the name of your application server host if you aren't running the browser on the application server. If you changed the default port for the AdminServer from 7001, use the port you changed it to. You should see output like this: 10. Start the WebLogic managed servers by opening a command prompt and navigating to MIDDLEWARE_HOME/user_projects/domains/idocumaker_domain/bin/. When you start the servers listed below, you will be prompted to enter the WebLogic credentials to start the server. You can prevent this by providing the credential in the startManagedwebLogic.cmd file for the WLS_USER and WLS_PASS values. Note that the credential will be stored in cleartext. To start the server, type in the command shown. a. Start the JMS Server: ./startManagedWebLogic.cmd jms_server b. Start Dashboard/Documaker Administrator: ./startManagedWebLogic.cmd dmkr_server c. Start Documaker Interactive for Correspondence: ./startManagedWebLogic.cmd idm_server SOA Composites  If you're planning on testing out the approval process components of BPEL that can be used with Documaker Interactive, then use the following steps to deploy the SOA composites. If you're not going to use BPEL, you can skip to the next section.1. Stop the servers listed in the previous section (Step 10) in the reverse order that they were started.2. Run the Domain configuration command: navigate to and execute MIDDLEWARE_HOME/wlserver_10.3/common/bin/config.cmd.3. Select Extend and click next. 4. Select the iDocumaker Domain and click Next. 5. Select the Oracle SOA Suite – 11.1.1.0 (this may automatically select other components which is OK). Click Next. 6. View the Configure JDBC resources screen. You should not make any changes. Click Next. 7. Check both connections and click Test Connections. After successful test, click Next. If the tests fail, something is broken. Go back to configure JDBC resources and check your service name/SID. 8. Check all schemas. Set a password (will be the same for all schemas). Enter the database information (service name, host name, port). Click Next. 9. Connections should test successfully. If not, go back and fix any errors. Click Next. 10. Click Next to pass through Optional Configuration. 11. Click Extend. 12. Click Done. 13. Open a terminal window and navigate to/execute: ODEE_HOME/documaker/j2ee/weblogic/oracle11g/bpel/antbuild.cmd14. Start the WebLogic Servers – AdminServer, jms_server, dmkr_server, idm_server. If you forgot how to do this, see the previous section Step 10. Note: if you previously changed the startManagedWebLogic.cmd script for WLS_USER and WLS_PASS you will need to make those changes again. 15. Start the WebLogic server soa_server1: MIDDLEWARE_HOME/user_projects/domains/idocumaker_domain/bin/startManagedWebLogic.cmd soa_server116. Open a browser to http://localhost:7001/console and login. 17. Navigate to Services?Data Sources and select DMKR_ASLINE. 18. Click the Targets tab. Check soa_server1, then click Save. Repeat for the DMKR_ADMIN data source. 19. Open a command prompt and navigate to ODEE_HOME/j2ee/weblogic/oracle11g/scripts, then execute deploy_soa.cmd. That's it! (As if that wasn't enough?) DOCUMAKER Deploy the sample MRL resources by navigating to/executing ODEE_HOME/documaker/mstrres/dmres/deploysamplemrl.bat. You should see approximately 500 resources deployed into the database. Start the Factory Services. Start?Run?services.msc. Locate the service named "ODDF xxxx" and right-click, select Start. Note that each Assembly Line has a separate Factory setup, including its own Factory service and Docupresentment service. The services are named for the assembly line and the machine on which they are installed (because you could have multiple machines servicing a single assembly line, so this allows for easy scripting to control all the services if you choose to do so. Repeat for the Docupresentment service. Note that each Assembly Line has a separate Docupresentment. Using Windows Explorer, navigate to ODEE_HOME/documaker/mstrres/dmres/input and select one of the XML files, and copy it into ODEE_HOME/documaker/hotdirectory. Note: if you chose a different hot directory during installation, copy the file there instead. Momentarily you should see the XML file disappear! Open browser and navigate to http://localhost:10001/DocumakerDashboard (previous versions 12.0-12.2 use http://localhost:10001/dashboard) and verify that job processed successfully. Note that some transactions may fail if you do not have a properly configured email server, and this is ok. You can set up a simple SMTP server (just search the internet for "SMTP developer" and you'll get several to choose from.  So... that's it? Where are we at this point? You now have a completely functional ODEE installation, from soup to nuts as they say. You can further expand your installation by doing some of the following activities: clustering WebLogic services configuring WebLogic for redundancy configuring Oracle 11g for RAC adding additional Factory servers for redundancy/processing capacity setting up a real MRL (instead of the sample resources) testing Documaker Web Services for job submission and more!  I certainly hope you've enjoyed this and find it useful. If you find yourself running into trouble, visit the Oracle Community for Documaker - there is plenty of activity there and you can ask questions. For more concentrated assistance, you can engage an Oracle consultant who is a subject matter expert to assist you. Feel free to email me [andy (dot) little (at) oracle (dot) com] and I can connect you with the appropriate resource to get started. Best of luck! -Andy 

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• Package and Publish Web Sites with TFS 2010 Build Server

  - by jdanforth

  To package and publish web sites with TFS 2010 Build Server, you can use MSDeploy and some of the new MSBuild arguments. For example: /p:DeployOnBuild=True /p:DeployTarget=MsDeployPublish /p:MSDeployPublishMethod=InProc /p:CreatePackageOnPublish=True /p:DeployIisAppPath="Default Web Site/WebApplication1" /p:MsDeployServiceUrl=localhost Does all the work for you! Unfortunately these arguments are not very well documented, yet. Please feel free comment with pointers to good docs. You can enter these arguments when editing the Build Definition, under the Process tab and the Advanced section: If you’re working with these things, I’m sure you’ve not missed the PDC 2009 presentation by Vishal Joshi about MS Deploy. A few links on the topic: http://stackoverflow.com/questions/2636153/where-is-the-documentation-for-msbuild-arguments-to-run-msdeploy http://blogs.msdn.com/aspnetue/archive/2010/03/05/automated-deployment-in-asp-net-4-frequently-asked-questions.aspx http://www.hanselman.com/blog/WebDeploymentMadeAwesomeIfYoureUsingXCopyYoureDoingItWrong.aspx

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• Dec 5th Links: ASP.NET, ASP.NET MVC, jQuery, Silverlight, Visual Studio

  - by ScottGu

  Here is the latest in my link-listing series.  Also check out my VS 2010 and .NET 4 series for another on-going blog series I’m working on. [In addition to blogging, I am also now using Twitter for quick updates and to share links. Follow me at: twitter.com/scottgu] ASP.NET ASP.NET Code Samples Collection: J.D. Meier has a great post that provides a detailed round-up of ASP.NET code samples and tutorials from a wide variety of sources.  Lots of useful pointers. Slash your ASP.NET compile/load time without any hard work: Nice article that details a bunch of optimizations you can make to speed up ASP.NET project load and compile times. You might also want to read my previous blog post on this topic here. 10 Essential Tools for Building ASP.NET Websites: Great article by Stephen Walther on 10 great (and free) tools that enable you to more easily build great ASP.NET Websites.  Highly recommended reading. Optimize Images using the ASP.NET Sprite and Image Optimization Framework: A nice article by 4GuysFromRolla that discusses how to use the open-source ASP.NET Sprite and Image Optimization Framework (one of the tools recommended by Stephen in the previous article).  You can use this to significantly improve the load-time of your pages on the client. Formatting Dates, Times and Numbers in ASP.NET: Scott Mitchell has a great article that discusses formatting dates, times and numbers in ASP.NET.  A very useful link to bookmark.  Also check out James Michael’s DateTime is Packed with Goodies blog post for other DateTime tips. Examining ASP.NET’s Membership, Roles and Profile APIs (Part 18): Everything you could possibly want to known about ASP.NET’s built-in Membership, Roles and Profile APIs must surely be in this tutorial series. Part 18 covers how to store additional user info with Membership. ASP.NET with jQuery An Introduction to jQuery Templates: Stephen Walther has written an outstanding introduction and tutorial on the new jQuery Template plugin that the ASP.NET team has contributed to the jQuery project. Composition with jQuery Templates and jQuery Templates, Composite Rendering, and Remote Loading: Dave Ward has written two nice posts that talk about composition scenarios with jQuery Templates and some cool scenarios you can enable with them. Using jQuery and ASP.NET to Build a News Ticker: Scott Mitchell has a nice tutorial that demonstrates how to build a dynamically updated “news ticker” style UI with ASP.NET and jQuery. Checking All Checkboxes in a GridView using jQuery: Scott Mitchell has a nice post that covers how to use jQuery to enable a checkbox within a GridView’s header to automatically check/uncheck all checkboxes contained within rows of it. Using jQuery to POST Form Data to an ASP.NET AJAX Web Service: Rick Strahl has a nice post that discusses how to capture form variables and post them to an ASP.NET AJAX Web Service (.asmx). ASP.NET MVC ASP.NET MVC Diagnostics Using NuGet: Phil Haack has a nice post that demonstrates how to easily install a diagnostics page (using NuGet) that can help identify and diagnose common configuration issues within your apps. ASP.NET MVC 3 JsonValueProviderFactory: James Hughes has a nice post that discusses how to take advantage of the new JsonValueProviderFactory support built into ASP.NET MVC 3.  This makes it easy to post JSON payloads to MVC action methods. Practical jQuery Mobile with ASP.NET MVC: James Hughes has another nice post that discusses how to use the new jQuery Mobile library with ASP.NET MVC to build great mobile web applications. Credit Card Validator for ASP.NET MVC 3: Benjii Me has a nice post that demonstrates how to build a [CreditCard] validator attribute that can be used to easily validate credit card numbers are in the correct format with ASP.NET MVC. Silverlight Silverlight FireStarter Keynote and Sessions: A great blog post from John Papa that contains pointers and descriptions of all the great Silverlight content we published last week at the Silverlight FireStarter.  You can watch all of the talks online.  More details on my keynote and Silverlight 5 announcements can be found here. 31 Days of Windows Phone 7: 31 great tutorials on how to build Windows Phone 7 applications (using Silverlight).  Silverlight for Windows Phone Toolkit Update: David Anson has a nice post that discusses some of the additional controls provided with the Silverlight for Windows Phone Toolkit. Visual Studio JavaScript Editor Extensions: A nice (and free) Visual Studio plugin built by the web tools team that significantly improves the JavaScript intellisense support within Visual Studio. HTML5 Intellisense for Visual Studio: Gil has a blog post that discusses a new extension my team has posted to the Visual Studio Extension Gallery that adds HTML5 schema support to Visual Studio 2008 and 2010. Team Build + Web Deployment + Web Deploy + VS 2010 = Goodness: Visual blogs about how to enable a continuous deployment system with VS 2010, TFS 2010 and the Microsoft Web Deploy framework.  Visual Studio 2010 Emacs Emulation Extension and VIM Emulation Extension: Check out these two extensions if you are fond of Emacs and VIM key bindings and want to enable them within Visual Studio 2010. Hope this helps, Scott

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• How to configure Visual Studio 2010 code coverage for ASP.NET MVC unit tests

  - by DigiMortal

  I just got Visual Studio 2010 code coverage work with ASP.NET MVC application unit tests. Everything is simple after you have spent some time with forums, blogs and Google. To save your valuable time I wrote this posting to guide you through the process of making code coverage work with ASP.NET MVC application unit tests. After some fighting with Visual Studio I got everything to work as expected. I am still not very sure why users must deal with this mess, but okay – I survived it. Before you start configuring Visual Studio I expect your solution meets the following needs: there are at least one library that will be tested, there is at least on library that contains tests to be run, there are some classes and some tests for them, and, of course, you are using version of Visual Studio 2010 that supports tests (I have Visual Studio 2010 Ultimate). Now open the following screenshot to separate windows and follow the steps given below. Visual Studio 2010 Test Settings window. Click on image to see it at original size.  Double click on Local.testsettings under Solution Items. Test settings window will be opened. Select “Data and Diagnostics” from left pane. Mark checkboxes “ASP.NET Profiler” and “Code Coverage”. Move cursor to “Code Coverage” line and press Configure button or make double click on line. Assemblies selection window will be opened. Mark checkboxes that are located before assemblies about what you want code coverage reports and apply settings. Save your project and close Visual Studio. Run Visual Studio as Administrator and run tests. NB! Select Test => Run => Tests in Current Context from menu. When tests are run you can open code coverage results by selecting Test => Windows => Code Coverage Results from menu. Here you can see my example test results. Visual Studio 2010 Test Results window. All my tests passed this time. :) Click on image to see it at original size.  And here are the code coverage results. Visual Studio 2101 Code Coverage Results. I need a lot more tests for sure. Click on image to see it at original size.  As you can see everything was pretty simple. But it took me sometime to figure out how to get everything work as expected. Problems? You may face some problems when making code coverage work. Here is my short list of possible problems. Make sure you have all assemblies available for code coverage. In some cases it needs more libraries to be referenced as you currently have. By example, I had to add some more Enterprise Library assemblies to my project. You can use EventViewer to discover errors that where given during testing. Make sure you selected all testable assemblies from Code Coverage settings like shown above. Otherwise you may get empty results. Tests with code coverage are slower because we need ASP.NET profiler. If your machine slows down then try to free more resources.

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• Make Your PC Look Like Windows Phone 7

  - by Matthew Guay

  Windows Phone 7 offers a unique and exciting UI that displays lots of information efficiently on the screen.  And with a simple Rainmeter theme, you can have the same UI and content directly on your Windows 7 desktop. Turn your Desktop into a Windows Phone 7 lookalike To give your Windows 7 desktop a Windows Phone 7 makeover, first you need to have the free Rainmeter application installed.  If you do not have it installed, download it from the link below and run the setup.  Accept the license agreement, and install it with the default settings. By default Rainmeter will automatically run when you start your computer.  If you do not want this, you can uncheck the box during the setup. Now, download the Omnimo UI theme for Rainmeter (link below).  You will need to unzip the folder first. This theme uses the Segoe UI and the Segoe UI Light font, so Windows Vista users need to install the segoeuil.ttf font first, and XP users need to install both the segoeui.ttf and the segoeuil.ttf font first.  Copy the appropriate fonts to C:\Windows\Fonts, or in Vista double-click on the font and select Install. Now, run the Rainmeter theme setup.  Double-click on the Rainstaller.exe in the Omnimo folder. Click Express install to add the theme and skin to Rainmeter. Click Finish, and by default Rainmeter will open with your new theme. When the new theme opens the first time, you will be asked to read the readme, or simply go to the gallery. When you open the gallery, you can choose from a wide variety of tiles and gadgets to place on your desktop.  You can also choose a different color scheme for your tiles. Once you’re done, click the X in the top right hand corner to close the Gallery.  Welcome to your Windows Phone 7 desktop!  Many of the gadgets are dynamic, and you can change the settings for most of them.  The only thing missing is the transition animations that Windows Phone 7 shows when you launch an application. To make it look even more like Windows Phone 7, you can change your background to black.  This makes the desktop theme really dramatic. And, if you want to add gadgets or change the color scheme, simply click on the + logo on the top. Windows Phone 7 Desktop Wallpapers If you’d prefer to simply change your background, My Microsoft Life has several very nice Windows Phone 7 wallpapers available for free.  Click the link below to download these and other Microsoft-centric wallpapers. If you can’t wait to get the new Windows phone 7, this is a great way to start experiencing the beauty of the phone UI on your desktop. Links Download Rainmeter Download the Omnimo UI Rainmeter theme Download Windows Phone 7 inspired wallpapers Similar Articles Productive Geek Tips Try out Windows Phone 7 on your PC todayTest All Features of Windows Phone 7 On Your PCHow-To Geek on Lifehacker: How to Make Windows Vista Less AnnoyingCreate a Shortcut or Hotkey to Mute the System Volume in WindowsMake Ubuntu Automatically Save Changes to Your Session TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Norwegian Life If Web Browsers Were Modes of Transportation Google Translate (for animals) Roadkill’s Scan Port scans for open ports Out of 100 Tweeters Out of band Security Update for Internet Explorer

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• IntelliTrace As a Learning Tool for MVC2 in a VS2010 Project

  - by Sam Abraham

  IntelliTrace is a new feature in Visual Studio 2010 Ultimate Edition. I see this valuable tool as a “Program Execution Recorder” that captures information about events and calls taking place as soon as we hit the VS2010 play (Start Debugging) button or the F5 key. Many online resources already discuss IntelliTrace and the benefit it brings to both developers and testers alike so I see no value of just repeating this information.  In this brief blog entry, I would like to share with you how I will be using IntelliTrace in my upcoming talk at the Ft Lauderdale ArcSig .Net User Group Meeting on April 20th 2010 (check http://www.fladotnet.com for more information), as a learning tool to demonstrate the internals of the lifecycle of an MVC2 application.  I will also be providing some helpful links that cover IntelliTrace in more detail at the end of my article for reference. IntelliTrace is setup by default to only capture execution events. Microsoft did such a great job on optimizing its recording process that I haven’t even felt the slightest performance hit with IntelliTrace running as I was debugging my solutions and projects.  For my purposes here however, I needed to capture more information beyond execution events, so I turned on the option for capturing calls in addition to events as shown in Figures 1 and 2. Changing capture options will require us to stop our debugging session and start over for the new settings to take place. Figure 1 – Access IntelliTrace options via the Tools->Options menu items Figure 2 – Change IntelliTrace Options to capture call information as well as events Notice the warning with regards to potentially degrading performance when selecting to capture call information in addition to the default events-only setting. I have found this warning to be sure true. My subsequent tests showed slowness in page load times compared to rendering those same exact pages with the “event-only” option selected. Execution recording is auto-started along with the new debugging session of our project. At this point, we can simply interact with the application and continue executing normally until we decide to “playback” the code we have executed so far.  For code replay, first step is to “break” the current execution as show in Figure 3.   Figure 3 – Break to replay recording A few tries later, I found a good process to quickly find and demonstrate the MVC2 page lifecycle. First-off, we start with the event view as shown in Figure 4 until we find an interesting event that needs further studying.  Figure 4 – Going through IntelliTrace’s events and picking as specific entry of interest We now can, for instance, study how the highlighted HTTP GET request is being handled, by clicking on the “Calls View” for that particular event. Notice that IntelliTrace shows us all calls that took place in servicing that GET request. Double clicking on any call takes us to a more granular view of the call stack within that clicked call, up until getting to a specific line of code where we can do a line-by-line replay of the execution from that point onwards using F10 or F11 just like our typical good old VS2008 debugging helped us accomplish. Figure 5 – switching to call view on an event of interest Figure 6 – Double clicking on call shows a more granular view of the call stack. In conclusion, the introduction of IntelliTrace as a new addition to the VS developers’ tool arsenal enhances development and debugging experience and effectively tackles the “no-repro” problem. It will also hopefully enhance my audience’s experience listening to me speaking about  an MVC2 page lifecycle which I can now easily visually demonstrate, thereby improving the probability of keeping everybody awake a little longer. IntelliTrace References: http://msdn.microsoft.com/en-us/magazine/ee336126.aspx http://msdn.microsoft.com/en-us/library/dd264944(VS.100).aspx

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• Dokuwiki: Moving Just the data directory on other server

  - by amit

  I have installed dokuwiki on IIS7. As per my teams requirement we have to move just the Data directory to other server location. e.g - IIS7 installed Dokuwiki location: C:\inetpub\wwwroot\dokuwiki\conf - data location on the other server we want: U:\Archive\LP_Archive\SH_Systems\DEV01\dokuwiki So for doing that I followed pointers on dokuwiki install iis7 As per the above link, I tried adding IUSR to data folder permissions but its failing due to my insufficient privileges. And without that IUSR permission set on data folder I am getting an error as "The datadir ('pages') at is not found, isn't accessible or writable". Is there any other way to make it work? Is there any other account than IUSR I can use?

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• What Functional features are worth a little OOP confusion for the benefits they bring?

  - by bonomo

  After learning functional programming in Haskell and F#, the OOP paradigm seems ass-backwards with classes, interfaces, objects. Which aspects of FP can I bring to work that my co-workers can understand? Are any FP styles worth talking to my boss about retraining my team so that we can use them? Possible aspects of FP: Immutability Partial Application and Currying First Class Functions (function pointers / Functional Objects / Strategy Pattern) Lazy Evaluation (and Monads) Pure Functions (no side effects) Expressions (vs. Statements - each line of code produces a value instead of, or in addition to causing side effects) Recursion Pattern Matching Is it a free-for-all where we can do whatever the programming language supports to the limit that language supports it? Or is there a better guideline?

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• Manage Your WordPress Blog Comments from Your Windows Desktop

  - by Matthew Guay

  Are you never more than a few steps away from your PC and want to keep up with comments on your blog?  Then here’s how you can stay on top of your WordPress comments right from your desktop. Wp-comment-notifier is a small free app for Windows that lets you easily view, approve, reply to, and delete comments from your WordPress blog.  Whether you have a free WordPress.com blog or are running WordPress on your own server, this tool can keep you connected to your comments.  Unfortunately it only lets you manage comments at one blog, so if manage multiple WordPress-powered sites you may find this a downside.  Otherwise, it works great and helps you stay on top of the conversation at your blog. Get notified with wp-comment-notifier Download the wp-comment-notifier (link below) and install as usual. Run it once it’s installed.  Enter your blog address, username, and password when prompted. Wp-comment-notifier will automatically setup your account and download recent comments. Finally, enter your blog’s name, and click Finish. Review Comments with wp-comment-notifier You can now review your comments directly by double-clicking the new WordPress icon in your system tray.  The window has 3 tabs…comments, pending, and spam.  Select a comment to reply, edit, spam, or delete it directly from your desktop. If you select Edit, then you can edit the HTML of the comment (including links) directly from within the notifier. You can approve or permanently delete any spam messages that are caught by your blog’s spam filter. Whenever new comments come in, you’ll see a tray popup letting you know how many comments are waiting to be approved or are in the spam folder.  Click the popup to open the editor. Now, you can directly approve that pending comment without going to your WordPress admin page.  When you’re done, just press Enter on your Keyboard to post the reply. Or, if you want to reply to the comment, click the reply link and enter your comment in the entry box at the bottom. If you ever want to double-check if there’s any new comments, just right-click on the tray icon and select refresh. Finally, you can change the settings from the Configuration link in the tray button or by clicking the gear button on the bottom of the review window.  You can change how often it checks for new comments, not to start the notifier at system startup, and edit your account information. Conclusion Whether you’re managing your personal blog or administer a site with millions of hits per day, staying on top of the conversation is one of the best ways to build and maintain your audience.  With wp-comment-notifier, you can be sure that you’re always in control of your blogs comments.  This app is especially useful if you review all comments before allowing them to be published. Download wp-comment-notifier Similar Articles Productive Geek Tips How-To Geek SoftwareHow-To Geek Software: WordPress Comment Moderation NotifierSave Time Commenting with Pre-Fill Comments Greasemonkey ScriptAdd Social Bookmarking (Digg This!) Links to your Wordpress BlogTools to Help Post Content On Your WordPress Blog TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips VMware Workstation 7 Acronis Online Backup DVDFab 6 Revo Uninstaller Pro Error Goblin Explains Windows Error Codes Twelve must-have Google Chrome plugins Cool Looking Skins for Windows Media Player 12 Move the Mouse Pointer With Your Face Movement Using eViacam Boot Windows Faster With Boot Performance Diagnostics Create Ringtones For Your Android Phone With RingDroid

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• Where Next for Google Translate? And What of Information Quality?

  - by ultan o'broin

  Fascinating article in the UK Guardian newspaper called Can Google break the computer language barrier? In it, Andreas Zollman, who works on Google Translate, comments that the quality of Google Translate's output relative to the amount of data required to create that output is clearly now falling foul of the law of diminishing returns. He says: "Each doubling of the amount of translated data input led to about a 0.5% improvement in the quality of the output," he suggests, but the doublings are not infinite. "We are now at this limit where there isn't that much more data in the world that we can use," he admits. "So now it is much more important again to add on different approaches and rules-based models." The Translation Guy has a further discussion on this, called Google Translate is Finished. He says: "And there aren't that many doublings left, if any. I can't say how much text Google has assimilated into their machine translation databases, but it's been reported that they have scanned about 11% of all printed content ever published. So double that, and double it again, and once more, shoveling all that into the translation hopper, and pretty soon you get the sum of all human knowledge, which means a whopping 1.5% improvement in the quality of the engines when everything has been analyzed. That's what we've got to look forward to, at best, since Google spiders regularly surf the Web, which in its vastness dwarfs all previously published content. So to all intents and purposes, the statistical machine translation tools of Google are done. Outstanding job, Googlers. Thanks." Surprisingly, all this analysis hasn't raised that much comment from the fans of machine translation, or its detractors either for that matter. Perhaps, it's the season of goodwill? What is clear to me, however, of course is that Google Translate isn't really finished (in any sense of the word). I am sure Google will investigate and come up with new rule-based translation models to enhance what they have already and that will also scale effectively where others didn't. So too, will they harness human input, which really is the way to go to train MT in the quality direction. But that aside, what does it say about the quality of the data that is being used for statistical machine translation in the first place? From the Guardian article it's clear that a huge humanly translated corpus drove the gains for Google Translate and now what's left is the dregs of badly translated and poorly created source materials that just can't deliver quality translations. There's a message about information quality there, surely. In the enterprise applications space, where we have some control over content this whole debate reinforces the relationship between information quality at source and translation efficiency, regardless of the technology used to do the translation. But as more automation comes to the fore, that information quality is even more critical if you want anything approaching a scalable solution. This is important for user experience professionals. Issues like user generated content translation, multilingual personalization, and scalable language quality are central to a superior global UX; it's a competitive issue we cannot ignore.

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• Configuring thouands of related products in Magento?

  - by Anonymous -

  I'm at a stage with a Magento store I'm developing where I've added all the products (all 6000 of them) and now would like to configure related products to up my conversion rate a bit. I was wondering if there was an extension anybody knew of that functions similarly to this one, with the most current version of Magento (Community Edition, 1.6.1). If not, would anyone be able to provide some pointers for writing a script that will run through each product and add 1-5 related products. I have a fairly basic idea of taking product title text and just doing a simple text similarity query between other product titles for now, just to get some related products up there, but the Magento database isn't making a terribly large amount of sense. Thanks to anyone who can shed some light on this. :)

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• Read Mobi eBooks on Kindle for PC

  - by Matthew Guay

  Do you use your PC as a eBook reader?  Kindle for PC makes it easy to read thousands of books from the Kindle Store on your computer. What you may not know is that is also works with .mobi format too, so you can increase the amount of books you can read. Amazon has jumpstarted the eBook market with their popular Kindle device.  Last fall Amazon unveiled Kindle for PC, and we reviewed how you can Read Kindle Books On Your Computer with Kindle for PC.  Whether or not you own a Kindle or other eBook reader, this is a great way to take advantage of the thousands of eBooks available from the Kindle Store today. It supports azw, prc, and tpz format, which are sold from the Kindle store, but it also supports Mobipocket (.mobi) eBooks that are not DRM protected.  Here’s how you can add them to Kindle for PC so you can easily read them on your PC Getting Started: First, make sure you have Kindle for PC (link below) installed on your computer. Sign in with your Amazon account when you first run it. Kindle for PC lets you easily read eBooks downloaded from the Kindle Store, but it doesn’t have any way to add other eBooks directly from the program. To add eBooks, you can sometimes download and double-click on the books, and they will open in Kindle for PC and be automatically added to the library.  However, this does not always seem to work. So instead, browse to your Documents folder (simply click on the Documents link on your Start menu), and double-click on the My Kindle Content folder. This folder contains all the Kindle books you have downloaded.  If you have other eBooks you would like to add to Kindle for PC, simply drag-and-drop or copy and paste them into this folder.  Here we have a .mobi formatted book downloaded from the Gutenberg Project that we’re dragging into the folder. Now, close and reopen Kindle for PC.  It should now show your new eBook right beside the eBooks you have downloaded from the Kindle Store. These eBooks work just the same as the ones downloaded from the Kindle store, and you can change font size and add bookmarks just as with other eBooks. The eBooks downloaded this way may show up with either a Amazon logo or a mobile device icon.  You should only see the mobile device icon on .mobi files formatted for mobile devices; other ones should show up with the Amazon logo.  In this screen, Pilgrim’s Progress is a standard .mobi book, The Adventures of Sherlock Holmes is a mobipocket book, and the others are downloaded from the Kindle Store. Conclusion This is a great way to read eBooks from across the internet on Kindle for PC.  Wikipedia’s Kindle page has a list of websites that offer eBooks formatted for the Kindle, so be sure to check it out for more books. Links Download Kindle for PC List of websites that offer eBooks that will work on Kindle – via Wikipedia Similar Articles Productive Geek Tips Read Kindle Books On Your Computer with Kindle for PCInstall Adobe PDF Reader on Ubuntu EdgyHow to Access your Box.Net Account from Ubuntu the Easy Way TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional New Stinger from McAfee Helps Remove ‘FakeAlert’ Threats Google Apps Marketplace: Tools & Services For Google Apps Users Get News Quick and Precise With Newser Scan for Viruses in Ubuntu using ClamAV Replace Your Windows Task Manager With System Explorer Create Talking Photos using Fotobabble

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• Delegates and Events in C#

  - by hakanbilge

  Events and their underlying mechanism "Delegates" are very powerful tools of a developer and Event Driven Programming is one of the main Programming Paradigms. Its wiki definition is "event-driven programming or event-based programming is a programming paradigm in which the flow of the program is determined by events?i.e., sensor outputs or user actions (mouse clicks, key presses) or messages from other programs or threads." That means, your program can go its own way sequentially and in the case of anything that requires attention is done (when an event fires) by somebody or something, you can response it by using that event's controller method (this mechanism is like interrupt driven programming in embedded systems). There are many real world scenarios for events, for example, ASP.NET uses events to catch a click on a button or in your app, controller has notice of a change in UI by handling events exposed by view (in MVC pattern). Delegates in C# C# delegates correspond to function pointers in  [read more....]

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• What's a nice explanation for recursion?

  - by Gulshan

  This question is inspired by What's a nice explanation for pointers? So, what can be a nice explanation of the recursion? Update: The idea of recursion is not very common in real world. So, it seems a bit confusing to the novice programmers. Though, I guess, they become used to the concept gradually. So, what can be a nice explanation for them to grasp the idea easily? I expected some detailed answers. N.B. : Even I am going to post one answer. But to be fair, it will be few hours later.

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