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• Configure X connections over TCP without using an X connection

  - by Darren Cook

  I want to run a GUI application on a remote machine I only have ssh access to. I don't need to, or want to, see the GUI window. (I know I could use something like ssh -C -X remote_server if I wanted the GUI to be on my client.) I know X is running on the remote machine, as ps shows this: root ... /usr/bin/Xorg :0 -br -audit 0 -auth /var/gdm/:0.Xauth -nolisten tcp vt7 I set DISPLAY=:0.0 but I then get "Xlib: connection to ":0.0" refused by server" when I try to use it. At Get remote x display working in linux without ssh tunneling and Xserver doesn't work unless DISPLAY=0.0 I see the advice to use gdmsetup to allow X to listen on TCP. But, gdmsetup is a GUI application! And trying to run it over ssh -X did not work ("X11 connection rejected because of wrong authentication"). So, is there a text file I can edit to remove -nolisten? And, after editing it, how do I safely restart X, remotely? (There is other stuff running on this machine, so requesting a reboot is possible, but undesirable.) If not, should gdmsetup be able to run over ssh and I should persevere in that direction? UPDATE: I had to do the ssh -X session as root (ssh as a normal user, then sudo or su, does not work.) So, I did the edit with gdmsetup. I then restarted X with gdm-restart. I've also done xhost + from that ssh -X session. The ps line no longer shows the -nolisten tcp part. But still no luck connecting to it, with either DISPLAY=:0 or DISPLAY=localhost:0

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• WPF: Timers

  - by Ilya Verbitskiy

  I believe, once your WPF application will need to execute something periodically, and today I would like to discuss how to do that. There are two possible solutions. You can use classical System.Threading.Timer class or System.Windows.Threading.DispatcherTimer class, which is the part of WPF. I have created an application to show you how to use the API.     Let’s take a look how you can implement timer using System.Threading.Timer class. First of all, it has to be initialized.   1: private Timer timer; 2:   3: public MainWindow() 4: { 5: // Form initialization code 6: 7: timer = new Timer(OnTimer, null, Timeout.InfiniteTimeSpan, Timeout.InfiniteTimeSpan); 8: }   Timer’s constructor accepts four parameters. The first one is the callback method which is executed when timer ticks. I will show it to you soon. The second parameter is a state which is passed to the callback. It is null because there is nothing to pass this time. The third parameter is the amount of time to delay before the callback parameter invokes its methods. I use System.Threading.Timeout helper class to represent infinite timeout which simply means the timer is not going to start at the moment. And the final fourth parameter represents the time interval between invocations of the methods referenced by callback. Infinite timeout timespan means the callback method will be executed just once. Well, the timer has been created. Let’s take a look how you can start the timer.   1: private void StartTimer(object sender, RoutedEventArgs e) 2: { 3: timer.Change(TimeSpan.Zero, new TimeSpan(0, 0, 1)); 4:   5: // Disable the start buttons and enable the reset button. 6: }   The timer is started by calling its Change method. It accepts two arguments: the amount of time to delay before the invoking the callback method and the time interval between invocations of the callback. TimeSpan.Zero means we start the timer immediately and TimeSpan(0, 0, 1) tells the timer to tick every second. There is one method hasn’t been shown yet. This is the callback method OnTimer which does a simple task: it shows current time in the center of the screen. Unfortunately you cannot simple write something like this:   1: clock.Content = DateTime.Now.ToString("hh:mm:ss");   The reason is Timer runs callback method on a separate thread, and it is not possible to access GUI controls from a non-GUI thread. You can avoid the problem using System.Windows.Threading.Dispatcher class.   1: private void OnTimer(object state) 2: { 3: Dispatcher.Invoke(() => ShowTime()); 4: } 5:   6: private void ShowTime() 7: { 8: clock.Content = DateTime.Now.ToString("hh:mm:ss"); 9: }   You can build similar application using System.Windows.Threading.DispatcherTimer class. The class represents a timer which is integrated into the Dispatcher queue. It means that your callback method is executed on GUI thread and you can write a code which updates your GUI components directly.   1: private DispatcherTimer dispatcherTimer; 2:   3: public MainWindow() 4: { 5: // Form initialization code 6:   7: dispatcherTimer = new DispatcherTimer { Interval = new TimeSpan(0, 0, 1) }; 8: dispatcherTimer.Tick += OnDispatcherTimer; 9: } Dispatcher timer has nicer and cleaner API. All you need is to specify tick interval and Tick event handler. The you just call Start method to start the timer.   private void StartDispatcher(object sender, RoutedEventArgs e) { dispatcherTimer.Start(); // Disable the start buttons and enable the reset button. } And, since the Tick event handler is executed on GUI thread, the code which sets the actual time is straightforward.   1: private void OnDispatcherTimer(object sender, EventArgs e) 2: { 3: ShowTime(); 4: } We’re almost done. Let’s take a look how to stop the timers. It is easy with the Dispatcher Timer.   1: dispatcherTimer.Stop(); And slightly more complicated with the Timer. You should use Change method again.   1: timer.Change(Timeout.InfiniteTimeSpan, Timeout.InfiniteTimeSpan); What is the best way to add timer into an application? The Dispatcher Timer has simple interface, but its advantages are disadvantages at the same time. You should not use it if your Tick event handler executes time-consuming operations. It freezes your window which it is executing the event handler method. You should think about using System.Threading.Timer in this case. The code is available on GitHub.

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• Easy Made Easier

  - by dragonfly

      How easy is it to deploy a 2 node, fully redundant Oracle RAC cluster? Not very. Unless you use an Oracle Database Appliance. The focus of this member of Oracle's Engineered Systems family is to simplify the configuration, management and maintenance throughout the life of the system, while offering pay-as-you-grow scaling. Getting a 2-node RAC cluster up and running in under 2 hours has been made possible by the Oracle Database Appliance. Don't take my word for it, just check out these blog posts from partners and end users. The Oracle Database Appliance Experience - Zip Zoom Zoom http://www.fuadarshad.com/2012/02/oracle-database-appliance-experience.html Off-the-shelf Oracle database servers http://normanweaver.wordpress.com/2011/10/10/off-the-shelf-oracle-database-servers/ Oracle Database Appliance – Deployment Steps http://marcel.vandewaters.nl/oracle/database-appliance/oracle-database-appliance-deployment-steps     See how easy it is to deploy an Oracle Database Appliance for high availability with RAC? Now for the meat of this post, which is the first in a series of posts describing tips for making the deployment of an ODA even easier. The key to the easy deployment of an Oracle Database Appliance is the Appliance Manager software, which does the actual software deployment and configuration, based on best practices. But in order for it to do that, it needs some basic information first, including system name, IP addresses, etc. That's where the Appliance Manager GUI comes in to play, taking a wizard approach to specifying the information needed.     Using the Appliance Manager GUI is pretty straight forward, stepping through several screens of information to enter data in typical wizard style. Like most configuration tasks, it helps to gather the required information before hand. But before you rush out to a committee meeting on what to use for host names, and rely on whatever IP addresses might be hanging around, make sure you are familiar with some of the auto-fill defaults for the Appliance Manager. I'll step through the key screens below to highlight the results of the auto-fill capability of the Appliance Manager GUI.     Depending on which of the 2 Configuration Types (Config Type screen) you choose, you will get a slightly different set of screens. The Typical configuration assumes certain default configuration choices and has the fewest screens, where as the Custom configuration gives you the most flexibility in what you configure from the start. In the examples below, I have used the Custom config type.     One of the first items you are asked for is the System Name (System Info screen). This is used to identify the system, but also as the base for the default hostnames on following screens. In this screen shot, the System Name is "oda".     When you get to the next screen (Generic Network screen), you enter your domain name, DNS IP address(es), and NTP IP address(es). Next up is the Public Network screen, seen below, where you will see the host name fields are automatically filled in with default host names based on the System Name, in this case "oda". The System Name is also the basis for default host names for the extra ethernet ports available for configuration as part of a Custom configuration, as seen in the 2nd screen shot below (Other Network). There is no requirement to use these host names, as you can easily edit any of the host names. This does make filling in the configuration details easier and less prone to "fat fingers" if you are OK with these host names. Here is a full list of the automatically filled in host names. 1 2 1-vip 2-vip -scan 1-ilom 2-ilom 1-net1 2-net1 1-net2 2-net2 1-net3 2-net3     Another auto-fill feature of the Appliance Manager GUI follows a common practice of deploying IP Addresses for a RAC cluster in sequential order. In the screen shot below, I entered the first IP address (Node1-IP), then hit Tab to move to the next field. As a result, the next 5 IP address fields were automatically filled in with the next 5 IP addresses sequentially from the first one I entered. As with the host names, these are not required, and can be changed to whatever your IP address values are. One note of caution though, if the first IP Address field (Node1-IP) is filled out and you click in that field and back out, the following 5 IP addresses will be set to the sequential default. If you don't use the sequential IP addresses, pay attention to where you click that mouse. :-)     In the screen shot below, by entering the netmask value in the Netmask field, in this case 255.255.255.0, the gateway value was auto-filled into the Gateway field, based on the IP addresses and netmask previously entered. As always, you can change this value.     My last 2 screen shots illustrate that the same sequential IP address autofill and netmask to gateway autofill works when entering the IP configuration details for the Integrated Lights Out Manager (ILOM) for both nodes. The time these auto-fill capabilities save in entering data is nice, but from my perspective not as important as the opportunity to avoid data entry errors. In my next post in this series, I will touch on the benefit of using the network validation capability of the Appliance Manager GUI prior to deploying an Oracle Database Appliance.

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• Data not synchornizing java sockets

  - by Droid_Interceptor

  I am writing a auction server and client and using a class called BidHandler to deal with the bids another class AuctionItem to deal with the items for auction. The main problem I am having is little synchroization problem. Screen output of client server as can see from the image at 1st it takes the new bid and changes the value of the time to it, but when one the user enters 1.0 the item seems to be changed to that. But later on when the bid changes again to 15.0 it seems to stay at that price. Is there any reason for that. I have included my code below. Sorry if didnt explain this well. This is the auction client import java.io.*; import java.net.*; public class AuctionClient { private AuctionGui gui; private Socket socket; private DataInputStream dataIn; private DataOutputStream dataOut; //Auction Client constructor String name used as identifier for each client to allow server to pick the winning bidder public AuctionClient(String name,String server, int port) { gui = new AuctionGui("Bidomatic 5000"); gui.input.addKeyListener (new EnterListener(this,gui)); gui.addWindowListener(new ExitListener(this)); try { socket = new Socket(server, port); dataIn = new DataInputStream(socket.getInputStream()); dataOut = new DataOutputStream(socket.getOutputStream()); dataOut.writeUTF(name); while (true) { gui.output.append("\n"+dataIn.readUTF()); } } catch (Exception e) { e.printStackTrace(); } } public void sentBid(String bid) { try { dataOut.writeUTF(bid); } catch(IOException e) { e.printStackTrace(); } } public void disconnect() { try { socket.close(); } catch(IOException e) { e.printStackTrace(); } } public static void main (String args[]) throws IOException { if(args.length!=3) { throw new RuntimeException ("Syntax: java AuctionClient <name> <serverhost> <port>"); } int port = Integer.parseInt(args[2]); AuctionClient a = new AuctionClient(args[0],args[1],port); } } The Auction Server import java.io.*; import java.net.*; import java.util.*; public class AuctionServer { public AuctionServer(int port) throws IOException { ServerSocket server = new ServerSocket(port); while(true) { Socket client = server.accept(); DataInputStream in = new DataInputStream(client.getInputStream()); String name = in.readUTF(); System.out.println("New client "+name+" from " +client.getInetAddress()); BidHandler b = new BidHandler (name, client); b.start(); } } public static void main(String args[]) throws IOException { if(args.length != 1) throw new RuntimeException("Syntax: java AuctionServer <port>"); new AuctionServer(Integer.parseInt(args[0])); } } The BidHandler import java.net.*; import java.io.*; import java.util.*; import java.lang.Float; public class BidHandler extends Thread { Socket socket; DataInputStream in; DataOutputStream out; String name; float currentBid = 0.0f; AuctionItem paper = new AuctionItem(" News Paper ", " Free newspaper from 1990 ", 1.0f, false); protected static Vector handlers = new Vector(); public BidHandler(String name, Socket socket) throws IOException { this.name = name; this.socket = socket; in = new DataInputStream (new BufferedInputStream (socket.getInputStream())); out = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream())); } public synchronized void run() { try { broadcast("New bidder has entered the room"); handlers.addElement(this); while(true) { broadcast(paper.getName() + paper.getDescription()+" for sale at: " +paper.getPrice()); while(paper.getStatus() == false) { String message = in.readUTF(); currentBid = Float.parseFloat(message); broadcast("Bidder entered " +currentBid); if(currentBid > paper.getPrice()) { paper.setPrice(currentBid); broadcast("New Higgest Bid is "+paper.getPrice()); } else if(currentBid < paper.getPrice()) { broadcast("Higgest Bid is "+paper.getPrice()); } else if(currentBid == paper.getPrice()) { broadcast("Higgest Bid is "+paper.getPrice()); } } } } catch(IOException ex) { System.out.println("-- Connection to user lost."); } finally { handlers.removeElement(this); broadcast(name+" left"); try { socket.close(); } catch(IOException ex) { System.out.println("-- Socket to user already closed ?"); } } } protected static void broadcast (String message) { synchronized(handlers) { Enumeration e = handlers.elements(); while(e.hasMoreElements()) { BidHandler handler = (BidHandler) e.nextElement(); try { handler.out.writeUTF(message); handler.out.flush(); } catch(IOException ex) { handler = null; } } } } } The AuctionItem Class class AuctionItem { String itemName; String itemDescription; float itemPrice; boolean itemStatus; //Create a new auction item with name, description, price and status public AuctionItem(String name, String description, float price, boolean status) { itemName = name; itemDescription = description; itemPrice = price; itemStatus = status; } //return the price of the item. public synchronized float getPrice() { return itemPrice; } //Set the price of the item. public synchronized void setPrice(float newPrice) { itemPrice = newPrice; } //Get the status of the item public synchronized boolean getStatus() { return itemStatus; } //Set the status of the item public synchronized void setStatus(boolean newStatus) { itemStatus = newStatus; } //Get the name of the item public String getName() { return itemName; } //Get the description of the item public String getDescription() { return itemDescription; } } There is also simple GUI to go with this that seems to be working fine. If anyone wants it will include the GUI code.

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• CodePlex Daily Summary for Saturday, April 14, 2012

  CodePlex Daily Summary for Saturday, April 14, 2012Popular ReleasesJson.NET: Json.NET 4.5 Release 3: Change - DefaultContractResolver.IgnoreSerializableAttribute is now true by default Fix - Fixed MaxDepth on JsonReader recursively throwing an error Fix - Fixed SerializationBinder.BindToName not being called with full assembly namesVisual Studio Team Foundation Server Branching and Merging Guide: v2 - For Visual Studio 11: Welcome to the BETA of the Branching and Merging Guide preview As this is a BETA release and the quality bar for the final Release has not been achieved, we value your candid feedback and recommend that you do not use or deploy these BETA artifacts in a production environment. Quality-Bar Details Documentation has been reviewed by Visual Studio ALM Rangers Documentation has not been through an independent technical review Documentation has been reviewed by the quality and recording te...Media Companion: MC 3.435b Release: This release should be the last beta for 3.4xx. A handful of problems have been sorted out since last weeks release. If there are no major problems this time, it will upgraded to 3.500 Stable at the end of the week! General The .NET Framework has been modified to use the Client profile, as provided by normal Windows updates; no longer is there a requirement to download and install the Full profile! mc_com.exe has been worked on to mimic proper Media Companion output (a big thanks to vbat99...THE NVL Maker: The NVL Maker Ver 3.12: SIM??????，TRA??????，ZIP????。 ????????????????，??????~（??????????????????） ??????? simpatch1440x900 trapatch1440x900 ?????1400x900??1440x900，?????????????Data.xp3。 ???? ?????3.12?EXE????????????????， ??????????????，??Tool/krkrconf.exe，??Editor.exe， ???????????????「??????」。 ?????Editor.exe??????。 ???? ???? http://etale.us/gameupload/THE_NVL_Maker_ver3.12_sim.zip ???? http://www.mediafire.com/?je51683g22bz8vo ??Infinite Creation?? http://bbs.etale.us/forum.php ?????? ???? 3.12 ??? ???、????...SnmpMessenger: 0.1.1.1: Project Description SnmpMessenger, a messenger. Using the SNMP protocol to exchange messages. It's developed in C#. SnmpMessenger For .Net 4.0, Mono 2.8. Support SNMP V1, V2, V3. Features Send get, set and other requests and get the response. Send and receive traps. Handle requests and return the response. Note This library is compliant with the Common Language Specification(CLS). The latest version is 0.1.1.1. It is only a messenger, does not involve VACM. Any problems, Please mailto: wa...Python Tools for Visual Studio: 1.1.1: We’re pleased to announce the release of Python Tools for Visual Studio 1.1.1. Python Tools for Visual Studio (PTVS) is an open-source plug-in for Visual Studio which supports programming with the Python language. PTVS supports a broad range of features including: • Supports CPython and IronPython • Python editor with advanced member and signature intellisense • Code navigation: “Find all refs”, goto definition, and object browser • Local and remote debugging • Profiling with multiple view...Supporting Guidance and Whitepapers: v1 - Team Foundation Service Whitepapers: Welcome to the BETA release of the Team Foundation Service Whitepapers preview As this is a BETA release and the quality bar for the final Release has not been achieved, we value your candid feedback and recommend that you do not use or deploy these BETA artifacts in a production environment. Quality-Bar Details Documentation has been reviewed by Visual Studio ALM Rangers Documentation has been through an independent technical review All critical bugs have been resolved Known Issue...Microsoft .NET Gadgeteer: .NET Gadgeteer Core 2.42.550 (BETA): Microsoft .NET Gadgeteer Core RELEASE NOTES Version 2.42.550 11 April 2012 BETA VERSION WARNING: This is a beta version! Please note: - API changes may be made before the next version (2.42.600) - The designer will not show modules/mainboards for NETMF 4.2 until you get upgraded libraries from the module/mainboard vendors - Install NETMF 4.2 (see link below) to use the new features of this release That warning aside, this version should continue to sup...LINQ to Twitter: LINQ to Twitter Beta v2.0.24: Supports .NET 3.5, .NET 4.0, Silverlight 4.0, Windows Phone 7.1, and Client Profile. 100% Twitter API coverage. Also available via NuGet.Kendo UI ASP.NET Sample Applications: Sample Applications (2012-04-11): Sample application(s) demonstrating the use of Kendo UI in ASP.NET applications.SCCM Client Actions Tool: SCCM Client Actions Tool v1.12: SCCM Client Actions Tool v1.12 is the latest version. It comes with following changes since last version: Improved WMI date conversion to be aware of timezone differences and DST. Fixed new version check. The tool is downloadable as a ZIP file that contains four files: ClientActionsTool.hta – The tool itself. Cmdkey.exe – command line tool for managing cached credentials. This is needed for alternate credentials feature when running the HTA on Windows XP. Cmdkey.exe is natively availab...Dual Browsing: Dual Browser: Please note the following: I setup the address bar temporarily to only accepts http:// .com addresses. Just type in the name of the website excluding: http://, www., and .com; (Ex: for www.youtube.com just type: youtube then click OK). The page splitter can be grabbed by holding down your left mouse button and move left or right. By right clicking on the page background, you can choose to refresh, go back a page and so on. Demo video: http://youtu.be/L7NTFVM3JUYCslaGenFork: Rules sample v.1.1.0: On projects for CSLA v.4.2.2, added 5 new Business Rules: - DependencyFrom - RequiredWhenCanWrite - RequiredWhenIsNotNew - RequiredWhenNew - StopIfNotFieldExists Added new projects for CSLA v.4.3.10 with 6 new Business Rules: - DependencyFrom - FieldExists - RequiredWhenCanWrite - RequiredWhenIsNotNew - RequiredWhenNew - StopIfNotFieldExists Following CSLA convention, SL stands for Silverligth 5 and SL4 stands for Silverlight 4. NOTE - Although the projects for CSLA v.4.1.0 still exist, thi...Multiwfn: Multiwfn 2.3.3: Multiwfn 2.3.3Liberty: v3.2.0.1 Release 9th April 2012: Change Log-Fixed -Reach Fixed a bug where the object editor did not work on non-English operating systemsCommonData - Common Functions for ASP.NET projects: CommonData 0.3L: Common Data has been updated to the latest NUnit (2.6.0) The demo project has been updated with an example on how to correctly compare a floating point value.ASP.Net MVC Dynamic JS/CSS Script Compression Framework: Initial Stable: Initial Stable Version Contains Source for Compression Library and example for usage in web application.Path Copy Copy: 10.1: This release addresses the following work items: 11357 11358 11359 This release is a recommended upgrade, especially for users who didn't install the 10.0.1 version.ExtAspNet: ExtAspNet v3.1.3: ExtAspNet - ?? ExtJS ??? ASP.NET 2.0 ???，????? AJAX ?????????? ExtAspNet ????? ExtJS ??? ASP.NET 2.0 ???，????? AJAX ??????????。 ExtAspNet ??????? JavaScript，?? CSS，?? UpdatePanel，?? ViewState，?? WebServices ???????。 ??????: IE 7.0, Firefox 3.6, Chrome 3.0, Opera 10.5, Safari 3.0+ ????：Apache License 2.0 (Apache) ??：http://extasp.net/ ??：http://bbs.extasp.net/ ??：http://extaspnet.codeplex.com/ ??：http://sanshi.cnblogs.com/ ????： +2012-04-08 v3.1.3 -??Language="zh_TW"?JS???BUG（??）。 +?D...Coding4Fun Tools: Coding4Fun.Phone.Toolkit v1.5.5: New Controls ChatBubble ChatBubbleTextBox OpacityToggleButton New Stuff TimeSpan languages added: RU, SK, CS Expose the physics math from TimeSpanPicker Image Stretch now on buttons Bug Fixes Layout fix so RoundToggleButton and RoundButton are exactly the same Fix for ColorPicker when set via code behind ToastPrompt bug fix with OnNavigatedTo Toast now adjusts its layout if the SIP is up Fixed some issues with Expression Blend supportNew ProjectsArkadia Operating System: This operating system is based on Cosmos Project and C# Programming Langage.Copy Microsoft Online User Attributes from one domain user to another: CopyMSOLAttributes copies MSOL-specific user attributes from source user to target user (legacyExchangeDN, mail, msExchMailboxGuid, proxyAddresses, targetAddress). This assists in migrating to Office 365 in a multi-domain, multi-forest environment.DevChat: DevChat is a small secure chat for dev groups or teams inside of an organisation that wish to control their information.Dynamic UI Framework: Dynamic UI FrameworkEjemploAndroid: Prueba Trabajar con eclipse y codeplexElfos vs Orcos: videojuego xna elfos vs orcosFacebook Suite Rules Orchard module: Part of the Facebook Suite Orchard module that provides various rules for the Rules engine to interact with Facebook.FakeMail: FakeMail makes testing of email enabled applications easier for DEVs and QAs. You no longer need to have multiple "real" email addresses to test and validate registration and notification features. Written in C# this ASP.Net MVC application uses RavenDB Embedded as a document store and hosts a custom SMTP server. Configure FakeMail and update your existing email-enabled application's SMTP server settings are you are ready to go. FakeMail mail server will accept email sent to ANY addre...FIM Object Visualizer: The FIM Object Visualizer is a tool to display and document configurable FIM objects such as Synchronization Rules, Workflows and Management Policy Rules. FXIB: ThisGoogle Places Autocomplete API for WP7: The Google Places Autocomplete API for WP7 is a project for WP7 developers to use when implementing an autocomplete box in their application. This project provides an easy non-blocking way to get fast results from the Google Places Autocomplete API. hook send/recv function with CreateRemoteThread: this sample is hooking send/recv function with CreateRemoteThread api.Infinity Music: Entertainment center, music player, youtube player, Internet radio, Facebook, Twitter ... All in one application ...! Centro de entretenimiento, reproductor de música, reproductor videos you tube, radio por internet, Facebook, Twitter... Todo en una misma aplicación...! Centre de divertissement, lecteur de musique, lecteur YouTube, la radio sur Internet, Facebook, Twitter ... Tout dans une seule application ...!Library Guard: Library Guard helps you maintain your media library(primarily audio) by correcting tags, maintaining location of your files, etc.MVVM Source Control Monitor: An exercise in MVVM with Wpf to create a useful and unobtrusive source control notification tool that lives in the system tray, and can also be viewed in a window. This is meant to provide a 'real world' application to provide examples of MVVM implementation without understanding any other frameworks that can blur the lines about what MVVM really is (it's a pattern, folks). The application will use as little 3rd party code as possible (Wpf Toolkit, some other goodies) that are all unrel...Orchard Calendar: Module provides calendar capabilities in Orchard. This is accomplished by a new calendar content part and content type along with new calendar layout for Projector module. PaidRanks: PaidRanks makes it easier for minecraft admins to mangae user rights and rewards donators. You'll no longer have to manually change nick names again. It's developed in Java 7.Perritos Project: Practice of the subject projectPython Pygame Sprites Example: This project example uses Python and Pygame to create a game environment. This code requires major refactoring and there is no warranty. Reversi.NET: Reversi is a board game involving abstract strategy and played by two players on a board with 8 rows and 8 columns and a set of distinct pieces for each side.SharePoint Social Tag Counters: The SharePoint Social Tag Counter project takes the social features from SharePoint 2010 to another level. It allows you to immediately show your SharePoint visitors how popular the content is with the help of Social "I like it" and "Tag" counters.Shop systems1: dddddddddddSource Block - Data Access Components: Source Block - Data Access Components Contains two components. 1. DBHandler 2. DBSchemaHandler DBHandler : Pure ADO.Net based Data access layer DBSchemaHandler : Pure ADO.Net based Database schema handlerSource Block - Domain Driven Development Framework: A framework which promotes domain pattern based development. This promotes patterns such as : Repository, Unit of work, Dependency injection and Inversion of control. Built on MS E.F 4.2 using code first approach. Includes features such as code generationSuperSocket Proxy Server: A .NET proxy server based on SuperSocketTestC-Q: This project is on working with KDB database and fetching data from open market data providers. This will do rigorous analysis. Don't try to find any code till Oct 2012.tofinish: tofinishUse National Geographic Photo of the Day as Wallpaper: I used to watch National Geographic Photo of the day everyday. http://photography.nationalgeographic.com/photography/photo-of-the-day So I thought it might be helpful for people like me if a software synchronise the wallpaper with national geographic photo of the day. It also archives photo of the day along with publication date and photo title.VAMP: Projet industriel MBDS 2012?????: ???????Model???????: ????：??Model??????? ???：??? ??：?????????python?SDK: ??python??????SDK。????

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• Suspend not working after kernel update on an HP Envy14 1050

  - by leoxweb

  I just update ubuntu 12.04 to the kernel 3.2.0-30 and together with it a lot of packeges in the system. I am running it on an HP Envy14 1050. When I first made a fresh install of the clean ubuntu 12.04 I had the problem that when restoring from suspend the screen was black, although some backlight was there. I could fix it following this https://bugs.launchpad.net/ubuntu/+source/linux/+bug/989674/comments/20. Now, after the update the black screen after suspend has reappeared but with no backlight at all and the led in the caps lock key blinking. The laptop is using a ATI radeon 5600 with the privative drivers. During the update process there was an error with depmod . You can see the /var/log/dist-upgrade/apt-term.log file at the end. UPDATE: suspend is not working at all. The problem is not when restoring from suspend, but when I try to suspend the system it gets blocked and the fan running. Only option is to press power button. Log started: 2012-09-12 00:46:46 (Reading database ... 198909 files and directories currently installed.) Removing icedtea-7-jre-cacao ... Selecting previously unselected package linux-image-3.2.0-30-generic. (Reading database ... 198901 files and directories currently installed.) Unpacking linux-image-3.2.0-30-generic (from .../linux-image-3.2.0-30-generic_3.2.0-30.48_amd64.deb) ... Done. Preparing to replace icedtea-7-jre-jamvm 7~u3-2.1.1~pre1-1ubuntu3 (using .../icedtea-7-jre-jamvm_7u7-2.3.2-1ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement icedtea-7-jre-jamvm ... Preparing to replace openjdk-7-jre-lib 7~u3-2.1.1~pre1-1ubuntu3 (using .../openjdk-7-jre-lib_7u7-2.3.2-1ubuntu0.12.04.1_all.deb) ... Unpacking replacement openjdk-7-jre-lib ... Preparing to replace openjdk-7-jre-headless 7~u3-2.1.1~pre1-1ubuntu3 (using .../openjdk-7-jre-headless_7u7-2.3.2-1ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement openjdk-7-jre-headless ... Preparing to replace python-problem-report 2.0.1-0ubuntu12 (using .../python-problem-report_2.0.1-0ubuntu13_all.deb) ... Unpacking replacement python-problem-report ... Preparing to replace python-apport 2.0.1-0ubuntu12 (using .../python-apport_2.0.1-0ubuntu13_all.deb) ... Unpacking replacement python-apport ... Preparing to replace apport 2.0.1-0ubuntu12 (using .../apport_2.0.1-0ubuntu13_all.deb) ... apport stop/waiting Unpacking replacement apport ... Preparing to replace apport-gtk 2.0.1-0ubuntu12 (using .../apport-gtk_2.0.1-0ubuntu13_all.deb) ... Unpacking replacement apport-gtk ... Preparing to replace firefox-globalmenu 15.0+build1-0ubuntu0.12.04.1 (using .../firefox-globalmenu_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox-globalmenu ... Preparing to replace firefox 15.0+build1-0ubuntu0.12.04.1 (using .../firefox_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox ... Preparing to replace firefox-gnome-support 15.0+build1-0ubuntu0.12.04.1 (using .../firefox-gnome-support_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox-gnome-support ... Preparing to replace firefox-locale-en 15.0+build1-0ubuntu0.12.04.1 (using .../firefox-locale-en_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox-locale-en ... Preparing to replace firefox-locale-es 15.0+build1-0ubuntu0.12.04.1 (using .../firefox-locale-es_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox-locale-es ... Preparing to replace firefox-locale-zh-hans 15.0+build1-0ubuntu0.12.04.1 (using .../firefox-locale-zh-hans_15.0.1+build1-0ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement firefox-locale-zh-hans ... Preparing to replace totem-mozilla 3.0.1-0ubuntu21 (using .../totem-mozilla_3.0.1-0ubuntu21.1_amd64.deb) ... Unpacking replacement totem-mozilla ... Preparing to replace libtotem0 3.0.1-0ubuntu21 (using .../libtotem0_3.0.1-0ubuntu21.1_amd64.deb) ... Unpacking replacement libtotem0 ... Preparing to replace totem-plugins 3.0.1-0ubuntu21 (using .../totem-plugins_3.0.1-0ubuntu21.1_amd64.deb) ... Unpacking replacement totem-plugins ... Preparing to replace totem 3.0.1-0ubuntu21 (using .../totem_3.0.1-0ubuntu21.1_amd64.deb) ... Unpacking replacement totem ... Preparing to replace totem-common 3.0.1-0ubuntu21 (using .../totem-common_3.0.1-0ubuntu21.1_all.deb) ... Unpacking replacement totem-common ... Preparing to replace gir1.2-totem-1.0 3.0.1-0ubuntu21 (using .../gir1.2-totem-1.0_3.0.1-0ubuntu21.1_amd64.deb) ... Unpacking replacement gir1.2-totem-1.0 ... Preparing to replace glib-networking-common 2.32.1-1ubuntu1 (using .../glib-networking-common_2.32.1-1ubuntu2_all.deb) ... Unpacking replacement glib-networking-common ... Preparing to replace glib-networking 2.32.1-1ubuntu1 (using .../glib-networking_2.32.1-1ubuntu2_amd64.deb) ... Unpacking replacement glib-networking ... Preparing to replace glib-networking-services 2.32.1-1ubuntu1 (using .../glib-networking-services_2.32.1-1ubuntu2_amd64.deb) ... Unpacking replacement glib-networking-services ... Preparing to replace linux-firmware 1.79 (using .../linux-firmware_1.79.1_all.deb) ... Unpacking replacement linux-firmware ... Preparing to replace linux-generic 3.2.0.29.31 (using .../linux-generic_3.2.0.30.32_amd64.deb) ... Unpacking replacement linux-generic ... Preparing to replace linux-image-generic 3.2.0.29.31 (using .../linux-image-generic_3.2.0.30.32_amd64.deb) ... Unpacking replacement linux-image-generic ... Selecting previously unselected package linux-headers-3.2.0-30. Unpacking linux-headers-3.2.0-30 (from .../linux-headers-3.2.0-30_3.2.0-30.48_all.deb) ... Selecting previously unselected package linux-headers-3.2.0-30-generic. Unpacking linux-headers-3.2.0-30-generic (from .../linux-headers-3.2.0-30-generic_3.2.0-30.48_amd64.deb) ... Preparing to replace linux-headers-generic 3.2.0.29.31 (using .../linux-headers-generic_3.2.0.30.32_amd64.deb) ... Unpacking replacement linux-headers-generic ... Preparing to replace linux-libc-dev 3.2.0-29.46 (using .../linux-libc-dev_3.2.0-30.48_amd64.deb) ... Unpacking replacement linux-libc-dev ... Preparing to replace openjdk-7-jre 7~u3-2.1.1~pre1-1ubuntu3 (using .../openjdk-7-jre_7u7-2.3.2-1ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement openjdk-7-jre ... Preparing to replace openjdk-7-jdk 7~u3-2.1.1~pre1-1ubuntu3 (using .../openjdk-7-jdk_7u7-2.3.2-1ubuntu0.12.04.1_amd64.deb) ... Unpacking replacement openjdk-7-jdk ... Preparing to replace policykit-1-gnome 0.105-1ubuntu3 (using .../policykit-1-gnome_0.105-1ubuntu3.1_amd64.deb) ... Unpacking replacement policykit-1-gnome ... Preparing to replace xserver-xorg-input-synaptics 1.6.2-1ubuntu1~precise1 (using .../xserver-xorg-input-synaptics_1.6.2-1ubuntu1~precise2_amd64.deb) ... Unpacking replacement xserver-xorg-input-synaptics ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Processing triggers for hicolor-icon-theme ... Processing triggers for shared-mime-info ... Unknown media type in type 'all/all' Unknown media type in type 'all/allfiles' Unknown media type in type 'uri/mms' Unknown media type in type 'uri/mmst' Unknown media type in type 'uri/mmsu' Unknown media type in type 'uri/pnm' Unknown media type in type 'uri/rtspt' Unknown media type in type 'uri/rtspu' Processing triggers for man-db ... Processing triggers for bamfdaemon ... Rebuilding /usr/share/applications/bamf.index... Processing triggers for desktop-file-utils ... Processing triggers for gnome-menus ... Processing triggers for gconf2 ... Processing triggers for libglib2.0-0:i386 ... Processing triggers for libglib2.0-0 ... Setting up linux-image-3.2.0-30-generic (3.2.0-30.48) ... Running depmod. update-initramfs: deferring update (hook will be called later) Examining /etc/kernel/postinst.d. run-parts: executing /etc/kernel/postinst.d/dkms 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic Error! Problems with depmod detected. Automatically uninstalling this module. DKMS: Install Failed (depmod problems). Module rolled back to built state. run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic update-initramfs: Generating /boot/initrd.img-3.2.0-30-generic run-parts: executing /etc/kernel/postinst.d/pm-utils 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic run-parts: executing /etc/kernel/postinst.d/update-notifier 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.2.0-30-generic Found initrd image: /boot/initrd.img-3.2.0-30-generic Found linux image: /boot/vmlinuz-3.2.0-29-generic Found initrd image: /boot/initrd.img-3.2.0-29-generic Found linux image: /boot/vmlinuz-3.2.0-23-generic Found initrd image: /boot/initrd.img-3.2.0-23-generic Found memtest86+ image: /boot/memtest86+.bin Found Windows 7 (loader) on /dev/sda1 Found Windows Recovery Environment (loader) on /dev/sda2 Found Windows Recovery Environment (loader) on /dev/sda3 done Setting up python-problem-report (2.0.1-0ubuntu13) ... Setting up python-apport (2.0.1-0ubuntu13) ... Setting up apport (2.0.1-0ubuntu13) ... apport start/running Setting up apport-gtk (2.0.1-0ubuntu13) ... Setting up firefox (15.0.1+build1-0ubuntu0.12.04.1) ... Please restart all running instances of firefox, or you will experience problems. Setting up firefox-globalmenu (15.0.1+build1-0ubuntu0.12.04.1) ... Setting up firefox-gnome-support (15.0.1+build1-0ubuntu0.12.04.1) ... Setting up firefox-locale-en (15.0.1+build1-0ubuntu0.12.04.1) ... Setting up firefox-locale-es (15.0.1+build1-0ubuntu0.12.04.1) ... Setting up firefox-locale-zh-hans (15.0.1+build1-0ubuntu0.12.04.1) ... Setting up libtotem0 (3.0.1-0ubuntu21.1) ... Setting up totem-common (3.0.1-0ubuntu21.1) ... Setting up totem (3.0.1-0ubuntu21.1) ... Setting up totem-mozilla (3.0.1-0ubuntu21.1) ... Setting up gir1.2-totem-1.0 (3.0.1-0ubuntu21.1) ... Setting up totem-plugins (3.0.1-0ubuntu21.1) ... Setting up glib-networking-common (2.32.1-1ubuntu2) ... Setting up glib-networking-services (2.32.1-1ubuntu2) ... Setting up glib-networking (2.32.1-1ubuntu2) ... Setting up linux-firmware (1.79.1) ... Setting up linux-image-generic (3.2.0.30.32) ... Setting up linux-generic (3.2.0.30.32) ... Setting up linux-headers-3.2.0-30 (3.2.0-30.48) ... Setting up linux-headers-3.2.0-30-generic (3.2.0-30.48) ... Examining /etc/kernel/header_postinst.d. run-parts: executing /etc/kernel/header_postinst.d/dkms 3.2.0-30-generic /boot/vmlinuz-3.2.0-30-generic Setting up linux-headers-generic (3.2.0.30.32) ... Setting up linux-libc-dev (3.2.0-30.48) ... Setting up policykit-1-gnome (0.105-1ubuntu3.1) ... Setting up xserver-xorg-input-synaptics (1.6.2-1ubuntu1~precise2) ... Setting up openjdk-7-jre-headless (7u7-2.3.2-1ubuntu0.12.04.1) ... Installing new version of config file /etc/java-7-openjdk/security/java.security ... Installing new version of config file /etc/java-7-openjdk/jvm-amd64.cfg ... Setting up openjdk-7-jre-lib (7u7-2.3.2-1ubuntu0.12.04.1) ... Setting up icedtea-7-jre-jamvm (7u7-2.3.2-1ubuntu0.12.04.1) ... Setting up openjdk-7-jre (7u7-2.3.2-1ubuntu0.12.04.1) ... Setting up openjdk-7-jdk (7u7-2.3.2-1ubuntu0.12.04.1) ... update-alternatives: using /usr/lib/jvm/java-7-openjdk-amd64/bin/jcmd to provide /usr/bin/jcmd (jcmd) in auto mode. Processing triggers for libc-bin ... ldconfig deferred processing now taking place Log ended: 2012-09-12 00:49:16

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• Educational, well-written FOSS projects to read, study or discuss

  - by Godot

  Before you say it: yes, this "question" has been asked other times. However, I could not fine many of such questions and not that easily, and those I found had similar results. What I'm trying to say that there are no comprehensive lists of well written Open Source projects, so I decided to set some requirements for the entries (one or possibly more): Idiomatic use of the language in which they are written The project should be lightweight. Not as in "a few kbs", as in "clean" and possibly following the UNIX philosophy, making an efficient use of resources and performing its duty and nothing more. No code bloat, most importantly. Projects like Firefox and GNOME wouldn't qualify, for example. Minimal reliance on external, non-standard libraries, with exceptions for some common FOSS libraries (curses, Xlib, OpenGL and possibly "usual suspects" like gtk+, webkit and Boost). Reliance on well-written libraries is welcome. No reliance on proprietary software - for obvious reasons (programs that rely on XNA, DirectX, Cocoa and similar, for example). Well-documented code is welcome. Include link to web interfaces to their repositories if possible. Here are some sample projects that often pop up in these threads: Operating Systems Plan 9 from Bell Labs: More or less, the official "sequel" to UNIX. Written in C by the same people who invented C! NetBSD: The most portable BSD implementation, written in C and also a good example of portable and organized code. Network and Databases Sqlite: Extremely lightweight and extremely efficient, one of the best pieces of C software I've seen. Count the lines yourself! Lighttpd: A small but pretty reliable web server written in C. Programming languages and VMs Lua: extremely lightweight multi-paradigm programming language. Written in C. Tiny C Compiler: Really tiny C compiler. Not really comparable to GCC or Clang but does its job. PyPy: A Python implementation written in Python. Pharo: OK, I admit it, I'm not really a Smalltalk expert but Pharo is a fork of Squeak and looked rather interesting. Stackless Python - An implementation of Python that doesn't rely on the C call stack - written in C (with some parts in Python) Games and 3D: Angband: One of the most accessible roguelike codebases around here, written in C. Ogre3D: Cross-platform 3D engine. Gets bloated if you don't skip the platform-specific implementation code, otherwise is a pretty solid example of good C++ OO. Simon Tatham's Portable Puzzle Collection: Title says it all. Other - dwm: Lightweight window manager. Written in C. Emulation and Reverse Engineering - Bochs: x86 emulator, written in C++ and tiny enough. - MAME: If you want to see C at one of its lowest levels, MAME is for you. May not be as clean as the other projects but it can teach you A LOT. Before you ask: I didn't mention Linux because it has become quite bloated in the last few years, Linus has also confirmed it. Nonetheless, it'd be a great educational read the same, even if for other reasons. Same for GCC. Feel free to edit or wikify my post. I hope you won't lock my question, I'm only trying to organize a little community effort for the good of all those people who want to enhance their coding skills.

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• Incomplete upgrade 12.04 to 12.10

  - by David

  Everything was running smoothly. Everything had been downloaded from Internet, packages had been installed and a prompt asked for some obsolete programs/files to be removed or kept. After that the computer crashed and and to manually force a shutdown. I turned it on again and surprise I was on 12.10! Still the upgrade was not finished! How can I properly finish that upgrade? Here's the output I got in the command line after following posted instructions: i astrill - Astrill VPN client software i dayjournal - Simple, minimal, digital journal. i gambas2-gb-form - A gambas native form component i gambas2-gb-gtk - The Gambas gtk component i gambas2-gb-gtk-ext - The Gambas extended gtk GUI component i gambas2-gb-gui - The graphical toolkit selector component i gambas2-gb-qt - The Gambas Qt GUI component i gambas2-gb-settings - Gambas utilities class i A gambas2-runtime - The Gambas runtime i google-chrome-stable - The web browser from Google i google-talkplugin - Google Talk Plugin i indicator-keylock - Indicator for Lock Keys i indicator-ubuntuone - Indicator for Ubuntu One synchronization s i A language-pack-kde-zh-hans - KDE translation updates for language Simpl i language-pack-kde-zh-hans-base - KDE translations for language Simplified C i libapt-inst1.4 - deb package format runtime library idA libattica0.3 - a Qt library that implements the Open Coll idA libbabl-0.0-0 - Dynamic, any to any, pixel format conversi idA libboost-filesystem1.46.1 - filesystem operations (portable paths, ite idA libboost-program-options1.46.1 - program options library for C++ idA libboost-python1.46.1 - Boost.Python Library idA libboost-regex1.46.1 - regular expression library for C++ i libboost-serialization1.46.1 - serialization library for C++ idA libboost-signals1.46.1 - managed signals and slots library for C++ idA libboost-system1.46.1 - Operating system (e.g. diagnostics support idA libboost-thread1.46.1 - portable C++ multi-threading i libcamel-1.2-29 - Evolution MIME message handling library i libcmis-0.2-0 - CMIS protocol client library i libcupsdriver1 - Common UNIX Printing System(tm) - Driver l i libdconf0 - simple configuration storage system - runt i libdvdcss2 - Simple foundation for reading DVDs - runti i libebackend-1.2-1 - Utility library for evolution data servers i libecal-1.2-10 - Client library for evolution calendars i libedata-cal-1.2-13 - Backend library for evolution calendars i libedataserver-1.2-15 - Utility library for evolution data servers i libexiv2-11 - EXIF/IPTC metadata manipulation library i libgdu-gtk0 - GTK+ standard dialog library for libgdu i libgdu0 - GObject based Disk Utility Library idA libgegl-0.0-0 - Generic Graphics Library idA libglew1.5 - The OpenGL Extension Wrangler - runtime en i libglew1.6 - OpenGL Extension Wrangler - runtime enviro i libglewmx1.6 - OpenGL Extension Wrangler - runtime enviro i libgnome-bluetooth8 - GNOME Bluetooth tools - support library i libgnomekbd7 - GNOME library to manage keyboard configura idA libgsoap1 - Runtime libraries for gSOAP i libgweather-3-0 - GWeather shared library i libimobiledevice2 - Library for communicating with the iPhone i libkdcraw20 - RAW picture decoding library i libkexiv2-10 - Qt like interface for the libexiv2 library i libkipi8 - library for apps that want to use kipi-plu i libkpathsea5 - TeX Live: path search library for TeX (run i libmagickcore4 - low-level image manipulation library i libmagickwand4 - image manipulation library i libmarblewidget13 - Marble globe widget library idA libmusicbrainz4-3 - Library to access the MusicBrainz.org data i libnepomukdatamanagement4 - Basic Nepomuk data manipulation interface i libnux-2.0-0 - Visual rendering toolkit for real-time app i libnux-2.0-common - Visual rendering toolkit for real-time app i libpoppler19 - PDF rendering library i libqt3-mt - Qt GUI Library (Threaded runtime version), i librhythmbox-core5 - support library for the rhythmbox music pl i libusbmuxd1 - USB multiplexor daemon for iPhone and iPod i libutouch-evemu1 - KernelInput Event Device Emulation Library i libutouch-frame1 - Touch Frame Library i libutouch-geis1 - Gesture engine interface support i libutouch-grail1 - Gesture Recognition And Instantiation Libr idA libx264-120 - x264 video coding library i libyajl1 - Yet Another JSON Library i linux-headers-3.2.0-29 - Header files related to Linux kernel versi i linux-headers-3.2.0-29-generic - Linux kernel headers for version 3.2.0 on i linux-image-3.2.0-29-generic - Linux kernel image for version 3.2.0 on 64 i mplayerthumbs - video thumbnail generator using mplayer i myunity - Unity configurator i A openoffice.org-calc - office productivity suite -- spreadsheet i A openoffice.org-writer - office productivity suite -- word processo i python-brlapi - Python bindings for BrlAPI i python-louis - Python bindings for liblouis i rts-bpp-dkms - rts-bpp driver in DKMS format. i system76-driver - Universal driver for System76 computers. i systemconfigurator - Unified Configuration API for Linux Instal i systemimager-client - Utilities for creating an image and upgrad i systemimager-common - Utilities and libraries common to both the i systemimager-initrd-template-am - SystemImager initrd template for amd64 cli i touchpad-indicator - An indicator for the touchpad i ubuntu-tweak - Ubuntu Tweak i A unity-lens-utilities - Unity Utilities lens i A unity-scope-calculator - Calculator engine i unity-scope-cities - Cities engine i unity-scope-rottentomatoes - Unity Scope Rottentomatoes

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• List of freely available programming books

  - by Karan Bhangui

  I'm trying to amass a list of programming books with opensource licenses, like Creative Commons, GPL, etc. The books can be about a particular programming language or about computers in general. Hoping you guys could help: Languages BASH Advanced Bash-Scripting Guide (An in-depth exploration of the art of shell scripting) C The C book C++ Thinking in C++ C++ Annotations How to Think Like a Computer Scientist C# .NET Book Zero: What the C or C++ Programmer Needs to Know About C# and the .NET Framework Illustrated C# 2008 (Dead Link) Data Structures and Algorithms with Object-Oriented Design Patterns in C# Threading in C# Common Lisp Practical Common Lisp On Lisp Java Thinking in Java How to Think Like a Computer Scientist Java Thin-Client Programming JavaScript Eloquent JavaScript Haskell Real world Haskell Learn You a Haskell for Great Good! Objective-C The Objective-C Programming Language Perl Extreme Perl (license not specified - home page is saying "freely available") The Mason Book (Open Publication License) Practical mod_perl (CreativeCommons Attribution Share-Alike License) Higher-Order Perl Learning Perl the Hard Way PHP Practical PHP Programming Zend Framework: Survive the Deep End PowerShell Mastering PowerShell Prolog Building Expert Systems in Prolog Adventure in Prolog Prolog Programming A First Course Logic, Programming and Prolog (2ed) Introduction to Prolog for Mathematicians Learn Prolog Now! Natural Language Processing Techniques in Prolog Python Dive Into Python Dive Into Python 3 How to Think Like a Computer Scientist A Byte of Python Python for Fun Invent Your Own Computer Games With Python Ruby Why's (Poignant) Guide to Ruby Programming Ruby - The Pragmatic Programmer's Guide Mr. Neighborly's Humble Little Ruby Book SQL Practical PostgreSQL x86 assembly Paul Carter's tutorial Lua Programming In Lua (for v5 but still largely relevant) Algorithms and Data Structures Algorithms Data Structures and Algorithms with Object-Oriented Design Patterns in Java Planning Algorithms Frameworks/Projects The Django Book The Pylons Book Introduction to Design Patterns in C++ with Qt 4 (Open Publication License) Version control The SVN Book Mercurial: The Definitive Guide Pro Git UNIX / Linux The Art of Unix Programming Linux Device Drivers, Third Edition Others Structure and Interpretation of Computer Programs The Little Book of Semaphores Mathematical Logic - an Introduction An Introduction to the Theory of Computation Developers Developers Developers Developers Linkers and loaders Beej's Guide to Network Programming Maven: The Definitive Guide I will expand on this list as I get comments or when I think of more :D Related: Programming texts and reference material for my Kindle What are some good free programming books? Can anyone recommend a free software engineering book? Edit: Oh I didn't notice the community wiki feature. Feel free to edit your suggestions right in!

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• django custom command and cron

  - by Hellnar

  Hello I want my customly made django command to be executed every minute, however it seems like python /path/to/project/myapp/manage.py mycommand doesn't seem to work while at the directory python manage.py mycommand works perfectly. How can I achieve this ? I use /etc/crontab with: ****** root python /path/to/project/myapp/manage.py mycommand

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• Adding hooks to TortoiseHg

  - by hekevintran

  I am using TortoiseHg and would like to apply a hook to my repo. My repo's .hg/hgrc file is as follows: [hooks] pretxncommit = python:hg_checksize.newbinsize The thing is that I don't know where TortoiseHg's PYTHONPATH variable is set. How do I change it? Or where do I put my Python file so that it is visible by TortoiseHg's Python interpreter? I cannot find any mention of hooks in TortoiseHg's documentation or through Google?

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• Mercurial push error - hook failed

  - by raychenon

  I committed some changesets. Now I want to push them to remote repository. I get this error during push pushing to http://hguser:***@z2xeu:1337/hg/cms searching for changes 1 changesets found remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 2 changes to 2 files remote: Attempt to commit or push text file(s) using CRLF line endings remote: in 700e14d32918: src/main/webapp/WEB-INF/jsp/search.jsp remote: remote: To prevent this mistake in your local repository, remote: add to Mercurial.ini or .hg/hgrc: remote: remote: [hooks] remote: pretxncommit.crlf = python:hgext.win32text.forbidcrlf remote: remote: and also consider adding: remote: remote: [extensions] remote: hgext.win32text = remote: [encode] remote: ** = cleverencode: remote: [decode] remote: ** = cleverdecode: remote: transaction abort! remote: rollback completed remote: abort: pretxnchangegroup.crlf hook failed [command returned code 1 Wed Jan 12 11:14:55 2011] To prevent this, I wrote in the .hg/hgrc file ( there is no Mercurial.ini ) [hooks] pretxncommit.crlf = python:hgext.win32text.forbidcrlf pretxnchangegroup.crlf = python:hgext.win32text.forbidcrlf [extensions] hgext.win32text = But I still get the same error as above. I'm pretty sure pretxnchangegroup.crlf is involved in this, maybe a python file ? I use only unicode characters in files committed

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• How do I change the number of days a copied transaction log is kept in a log shipping configuration?

  - by Decker

  I think this is a pretty simple and perhaps stupid question. I've established log shipping between two SQL Server 2008 servers using the GUI (i.e. the SQL Server Management Studio). It's been running fine -- but now I want to change the number of days the copied files are retained on the secondary server. Is it simply a matter of going back to the GUI and change it there. Is it smart enough just to make that simple change or is the GUI only used to create the initial log shipping configuration?

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• Windows 8 Radeon update broke some games

  - by Andrew

  I've been using Windows 8 Consumer Preview 32-bit on my desktop for months, and recently did a software update through Windows Update. An update for my Radeon HD 5450 driver (Catalyst) to WDDM 1.2 was in the list of updates, and installed. When I went to play CS:GO and discovered that when loaded, it would not display the GUI (menus, sometimes even the background) after a few seconds of flickering GUI. I can still navigate the menus 'by feel' and connect to and play on servers, but have no GUI, no buy menu, no map, no cross-hairs, no health indicator, etc. I have tried CS:S, which works, and Borderlands, which doesn't even load the intro videos before the first menu screen. I've tried re-installing Catalyst from the AMD website, and the beta, and tried uninstalling and reinstalling CS:GO. The problem with it (and Borderlands) still happen. What broke, and how can I fix it? I'll be reinstalling soon anyway to dump Windows 8 back to 7, but would like to be able to game until then.

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• using ksar from command line

  - by Monir

  I am working on creating system monitoring graphs from sar outputs. Ksar seems to be a nice gui tool, with some command line support. My goal is to create pdf/png charts from a script using ksar command line. The released version has some minor bugs where I got some exceptions. Fortunately the beta 5.1.0_beta4 does not have the bugs and produces nice graphs from GUI. But I cannot seem to run the command line version. Trying to create a pdg/chart from command line is always bringing the GUI. Anyone had experience using command line ksar to produce pdfs/pngs?

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• Error in {% markdown %} filter in Django Nonrel

  - by Robert Smith

  I'm having trouble using Markdown in Django Nonrel. I followed this instructions (added 'django.contrib.markup' to INSTALLED_APPS, include {% load markup %} in the template and use |markdown filter after installing python-markdown) but I get the following error: Error in {% markdown %} filter: The Python markdown library isn't installed. In this line: /path/to/project/django/contrib/markup/templatetags/markup.py in markdown they will be silently ignored. """ try: import markdown except ImportError: if settings.DEBUG: raise template.TemplateSyntaxError("Error in {% markdown %} filter: The Python markdown library isn't installed.") ... return force_unicode(value) else: # markdown.version was first added in 1.6b. The only version of markdown # to fully support extensions before 1.6b was the shortlived 1.6a. if hasattr(markdown, 'version'): extensions = [e for e in arg.split(",") if e] It seems obvious that import markdown is causing the problem but when I run: $ python manage.py shell >>> import elementtree >>> import markdown everthing works alright. Running Markdown 2.0.3, Django 1.3.1, Python 2.7. UPDATE: I thought maybe this was an issue related to permissions, so I changed my project via chmod 777 -R, but it didn't work. Ideas? Thanks!

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• Is there a literal notation for decimal in IronPython?

  - by jeroenh

  suppose I have the following IronPython script: def Calculate(input): return input * 1.21 When called from C# with a decimal, this function returns a double: var python = Python.CreateRuntime(); dynamic engine = python.UseFile("mypythonscript.py") decimal input = 100M; // input is of type Decimal // next line throws RuntimeBinderException: // "cannot implicitly convert double to decimal" decimal result = engine.Calculate(input); I seem to have two options: First, I could cast at the C# side: seems like a no-go as I might loose precision. decimal result = (decimal)engine.Calculate(input); Second option is to use System.Decimal in the python script: works, but pollutes the script, which should be understandable for my users... import clr import System def CalculateVAT(amount): return amount * System.Decimal(1.21) Is there a way to tell the DLR that the number 1.21 should be interpreted as a Decimal, much like I would use the '1.21M' notation in C#?

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• ValueError with multi-table inheritance in Django Admin

  - by jorde

  I created two new classes which inherit model Entry: class Entry(models.Model): LANGUAGE_CHOICES = settings.LANGUAGES language = models.CharField(max_length=2, verbose_name=_('Comment language'), choices=LANGUAGE_CHOICES) user = models.ForeignKey(User) country = models.ForeignKey(Country, null=True, blank=True) created = models.DateTimeField(auto_now=True) class Comment(Entry): comment = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) class Discount(Entry): discount = models.CharField(max_length=2000, blank=True, verbose_name=_('Comment in English')) coupon = models.CharField(max_length=2000, blank=True, verbose_name=_('Coupon code if needed')) After adding these new models to admin via admin.site.register I'm getting ValueError when trying to create a comment or a discount via admin. Adding entries works fine. Error msg: ValueError at /admin/reviews/discount/add/ Cannot assign "''": "Discount.discount" must be a "Discount" instance. Request Method: GET Request URL: http://127.0.0.1:8000/admin/reviews/discount/add/ Exception Type: ValueError Exception Value: Cannot assign "''": "Discount.discount" must be a "Discount" instance. Exception Location: /Library/Python/2.6/site-packages/django/db/models/fields/related.py in set, line 211 Python Executable: /usr/bin/python Python Version: 2.6.1

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• What is the easiest language to start with?

  - by Teifion

  What is the language with the lowest barriers to entry, simplest syntax, easiest setup. I'm aware that there's not a best language but I am sure that there will be one that's got a good score in all three areas. It's for teaching friends how to program, I like PHP and Python but I don't want to be narrow minded and limit myself when there is a better option out there. Common suggestions Ruby Python Basic C Java C# Useful links Best Ways To Teach A Beginner to Program Why's (Poignant) Guide to Ruby Think Python

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• Ending php sessions for debugging purposes

  - by Bill Zimmerman

  Hi, This might be very easy to do, but I haven't been able to figure it out. Basically, I have a loosely couple web-app written in python and php. The python code uses PHP sessions (generated from the PHP app when the user logs in) to check if the user is logged in/has permission to access the given python resource. My question is this: What is the easiest way to force all active sessions to timeout. I would like to do this for debugging purposes, to test out the python code. I tried changing the session.max_lifetime PHP variable, but that still doesn't guarantee that the session has ended and is removed. I tried just deleting the file, but this seems to cause problems (when i refresh the php page, errors show up in my apache logs and it won't reload quickly) Any ideas?

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• Stackless installation and configuration with DJango

  - by crashekar

  I am trying to run a DJango Command Extension which uses stackless. I have installed Stackless Python (compiled with python 2.5) so whenever I type python2.5 at the console it fires up indicating that the version is Python 2.5.2 Stackless 3.1b3 060516 (python-2.52:72942, May 26 2009, 23:07:34) [GCC 4.3.3] on linux2 But in my eclipse I have configured my django application to run with python2.6. Specifically in the PyDev settings. So obviously when I mention import stackless it says that there is no such package. The problem is even if I add the '/usr/local/lib/python2.5/site-packages' directory it does not import stackless. What is the solution to this issue ?

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• Can't install egenix-mx-base on Django production VPS

  - by Shane

  I have been following these instructions for setting up a Django production server with postgres, apache, nginx, and memcache. My problem is that I cannot get egenix-mx-base to install and without this I cannot get psycopg2 to work and therefore no database access :(. I am attempting this on a VPS running a clean install of Ubuntu Hardy (8.04) and have followed all instructions on the site to a T. The error message is as follows: $ easy_install egenix-mx-base Searching for egenix-mx-base Reading http://pypi.python.org/simple/egenix-mx-base/ Reading http://www.egenix.com/products/python/mxBase/ Reading http://www.lemburg.com/python/mxExtensions.html Reading http://www.egenix.com/ Best match: egenix-mx-base 3.1.3 Downloading http://downloads.egenix.com/python/egenix-mx-base-3.1.3.tar.gz Processing egenix-mx-base-3.1.3.tar.gz Running egenix-mx-base-3.1.3/setup.py -q bdist_egg --dist-dir /tmp/easy_install-iF7qzl/egenix-mx-base-3.1.3/egg-dist-tmp-laxvcS Warning: Can't read registry to find the necessary compiler setting Make sure that Python modules _winreg, win32api or win32con are installed. In file included from mx/TextTools/mxTextTools/mxte.c:42: mx/TextTools/mxTextTools/mxte_impl.h: In function ‘mxTextTools_TaggingEngine’: mx/TextTools/mxTextTools/mxte_impl.h:345: warning: pointer targets in initialization differ in signedness mx/TextTools/mxTextTools/mxte_impl.h:364: warning: pointer targets in initialization differ in signedness mx/URL/mxURL/mxURL.c: In function ‘mxURL_SetFromString’: mx/URL/mxURL/mxURL.c:676: warning: pointer targets in initialization differ in signedness mx/UID/mxUID/mxUID.c: In function ‘mxUID_Verify’: mx/UID/mxUID/mxUID.c:333: warning: pointer targets in passing argument 1 of ‘sscanf’ differ in signedness mx/UID/mxUID/mxUID.c: In function ‘mxUID_New’: mx/UID/mxUID/mxUID.c:462: warning: pointer targets in passing argument 1 of ‘mxUID_CRC16’ differ in signedness error: Setup script exited with error: build/bdist.linux-x86_64-py2.5_ucs4/dumb/egenix_mx_base-3.1.3-py2.5.egg-info: Is a directory Thank you to anyone who takes the time to try to help me.

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• appending <a href> to keywords in rails

  - by kim

  Basically, there are some keywords that i want to pick out and assign a link to them dynamically. How should i go about in doing this? Let's say i have something like this; <p>ruby, rails, php, python, django and sinatra</p> and i would like to assign links to keywords like ruby and python, so the end results should look like this; <p><a href="http://www.ruby-lang.org">ruby</a>, rails, php, <a href="http://www.python.org">python</a>, django and sinatra</p> Any help or suggestion would be much appreciated!

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• What is the Difference Between Learning HTML and Learning a Programming Language?

  - by Brad Johansen

  I learned HTML and CSS about 8 months ago, and recently, about 2 months ago I started learning Python and Ruby. I find it much harder/time consuming to understand and be able to put Python and Ruby into practice than it was HTML or CSS. How is learning/understanding HTML and CSS, and being able to use them different from learning a programming language like Python or Ruby, and being able to put them in practice.

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• Hide fields in Django admin

  - by jwesonga

  I'm tying to hide my slug fields in the admin by setting editable=False but every time I do that I get the following error: KeyError at /admin/website/program/6/ Key 'slug' not found in Form Request Method: GET Request URL: http://localhost:8000/admin/website/program/6/ Exception Type: KeyError Exception Value: Key 'slug' not found in Form Exception Location: c:\Python26\lib\site-packages\django\forms\forms.py in __getitem__, line 105 Python Executable: c:\Python26\python.exe Python Version: 2.6.4 Any idea why this is happening

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