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  • MySQL - Update the same column twice

    - by uzioriluzan
    Hello, I need to update a column in a mysql table. If I do it in two steps as below, is the column "col" updated twice in the disk ? update table SET col=3*col, col=col+2; or is it written only once as in : update table SET col=3*col+2; Thanks

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  • How are Cassandra's 0.7 Secondary Indexes stored?

    - by user574793
    We have been using Cassandra 0.6 and now have Column Families with millions of keys. We are interested in using the new Secondary Index feature available in the 0.7 but couldn't find any documentation on how the new index is stored. Is there any disk-space limitation or is the index stored similar to keys in that it's spread over multiple nodes? I've tried combing through the Cassandra site for an answer but to no avail.

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  • sa2 -A /var/log/sa/sa13: No such file or directory

    - by user53925
    I have systat version 7.0.2 and the /etc/sysconfig/sysstat has the entry HISTORY=27, this is on a redhat enterprise server 5.6, the cron setup for this is # run system activity accounting tool every minute * * * * * root /usr/lib64/sa/sa1 1 1 # generate a daily summary of process accounting at 23:53 53 23 * * * root /usr/lib64/sa/sa2 -A I get the following error from the cron sa2 -A find: /var/log/sa/sa13: No such file or directory, Looking at the directory /var/log/sa the files are created from sa01 through sa10 (sa1 created on sep1, sa2 created on sep2 and so on), then the rest of the files are from sa14 through to sa 31 (created from Aug 14 to Aug 31). I have not made any changes on the server so I am not sure why I am getting these error messages and is there a way to fix this?. Someone suggested creating empty files from sa11 through sa14 to fix this but I am not sure if this might mess up something .

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  • snmp and platform specific information

    - by reza
    I need to come with a strategy to use gather information about the health of my linux platform, hardware health such as high CPU temperature and may be disk space usage, etc... I know my examples are not very good ones. Essentially, I have an SNMP agent running on Linux and I need it to provide platform specific health and state information. Are there any Linux packages that do this, what MIBs to use, Dell Open Manager functionality??? Any thoughts and comments are appreciated.

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  • How to make one CPU to be used simulataneously be three different users

    - by beginning_steps
    As a bootstrapping start-up we are thinking of saving on the IT hardware cost by making more use of the hardware that we have. As a solopreneur I have a laptop config : intel core2duo processor, 3Gb RAM and 250 GB RAM. Now we are planning to increase our team to 3 members. Will like your suggestions on the nest cost-effective step that I can take so that I can use the computing power of the existing laptop to act as a kind of server and then buy to more monitors where the new recruits can do the daily work on and they need to have different login id and access and they dont need access to all the files/applications as are available in my laptop. We use internet intensively to do our day to day activity. Please share you experience, whether you think this is a good ploy or there is any other more effective way of achieving the same result.

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  • How to recover logical volume deleted with lvremove

    - by John P
    I am on CentOS 5.5 and am running Xen. I have a large volume group that I create logical volumes on using lvcreate. Today I had a customer cancel her account, then change her mind about an hour later. Unfortunately I had already removed the LVM her Xen image resided on. (just using a standard lvremove ). There has been no other LVM activity on this disk since then (nothing else added or deleted). Is it possible to "undo" a lvremove, or recover logical volume? If so, how would I go about it?

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  • Unzip a memorystream (Contains the zip file) and get the files

    - by user1621791
    I have a memory stream that contains a zip file in byte[] format . Is there any way I can unzip this memory stream, without any need of writing the file to disk ? In general I am using ICSharpCode.SharpZipLib.Zip.FastZip to unzip a file , But any way to unzip a memory stream ? and store the files in another memorystream or in byte[] format according to the files/folders present in the zip ? Any way I can use the Memorymapped files feature in this scenario ?

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  • Can't save my picture

    - by mamii
    I want to save the image that I draw, but I always failure is reported. I have tested and tried but I can correct any errors. Therefore, I appeal to you. This store is for me as a "cancer sore". And what is the drawing application without the possibility shranjevnja? sucks: D Question: What is wrong with my code for storage? or anything else? Posts: 09-12 07:30:34.346: E / Panel (8003): IOEception 09-12 07:30:34.346: E / Panel (8003): java.io.IOException: Parent directory of file does not exist: / sdcard/anppp/2012Sep1273034.png 09-12 07:30:34.346: E / Panel (8003): at java.io.File.createNewFile (File.java: 1263) 09-12 07:30:34.346: E / Panel (8003): at aa.bb.cc.Panel.saveapp (Panel.java: 67) 09-12 07:30:34.346: E / Panel (8003): at aa.bb.cc.AndroidPaint.onOptionsItemSelected (AndroidPaint.java: 94) 09-12 07:30:34.346: E / Panel (8003): at android.app.Activity.onMenuItemSelected (Activity.java: 2170) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected (PhoneWindow.java: 730) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.view.menu.MenuItemImpl.invoke (MenuItemImpl.java: 139) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.view.menu.MenuBuilder.performItemAction (MenuBuilder.java: 855) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.view.menu.ExpandedMenuView.invokeItem (ExpandedMenuView.java: 89) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.view.menu.ExpandedMenuView.onItemClick (ExpandedMenuView.java: 93) 09-12 07:30:34.346: E / Panel (8003): at android.widget.AdapterView.performItemClick (AdapterView.java: 284) 09-12 07:30:34.346: E / Panel (8003): at android.widget.ListView.performItemClick (ListView.java: 3285) 09-12 07:30:34.346: E / Panel (8003): at android.widget.AbsListView $ PerformClick.run (AbsListView.java: 1640) 09-12 07:30:34.346: E / Panel (8003): at android.os.Handler.handleCallback (Handler.java: 587) 09-12 07:30:34.346: E / Panel (8003): at android.os.Handler.dispatchMessage (Handler.java: 92) 09-12 07:30:34.346: E / Panel (8003): at android.os.Looper.loop (Looper.java: 123) 09-12 07:30:34.346: E / Panel (8003): at android.app.ActivityThread.main (ActivityThread.java: 4363) 09-12 07:30:34.346: E / Panel (8003): at java.lang.reflect.Method.invokeNative (Native Method) 09-12 07:30:34.346: E / Panel (8003): at java.lang.reflect.Method.invoke (Method.java: 521) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run (ZygoteInit.java: 860) 09-12 07:30:34.346: E / Panel (8003): at com.android.internal.os.ZygoteInit.main (ZygoteInit.java: 618) 09-12 07:30:34.346: E / Panel (8003): at dalvik.system.NativeStart.main (Native Method) There is code: private Bitmap mBitmap; private Canvas mCanvas; private Bitmap tmpBitmap; private Canvas tmpCanvas; private DrawHandler mDrawHandler; private Canvas tCanvas; private String mImagePath = Environment.getExternalStorageDirectory() + "/anppp"; private File file; public void saveapp() { Calendar currentDate = Calendar.getInstance(); SimpleDateFormat formatter= new SimpleDateFormat("yyyyMMMddHmmss"); String dateNow = formatter.format(currentDate.getTime()); file = new File(mImagePath + "/" + dateNow +".png"); FileOutputStream fos; try { file.createNewFile(); fos = new FileOutputStream(file); tmpBitmap.compress(Bitmap.CompressFormat.PNG, 100, fos); fos.close(); } catch (FileNotFoundException e) { Log.e("Panel", "FileNotFoundException", e); } catch (IOException e) { Log.e("Panel", "IOEception", e); } } That's it .. I do not know what could be wrong ;(

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  • How to stop the windows XP timer?

    - by MLB
    Hi guys: I am trying to stop the windows XP timer, and actually I did it. The problem is that I want to do it using another way, not the one used before: running a visual basic script. I need to stop it using a knoppix, or a floppy disk... maybe any other way that I don't know it. Please, how to stop the timer without using a simple script? I am sorry about my English.

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  • Is it possible to unpage all memory in Windows?

    - by Hack59
    I have plenty of RAM, however, after starting and finishing a large number of processes, it seems that most of the applications' virtual memory has been paged to disk, and switching to any of the older processes requires a very long time to load the memory back into RAM. Is there a way, either via Windows API or via kernel call, to get Windows to unpage all (or as much as possible) memory? Maybe by stepping through the list of running processes and get the memory manager to unpage each process's memory?

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  • need to crawl images and the whole web pages

    - by Kei Situ
    hey, I am starting a project and wonder the relationship between the characters in images and the whole web page where the images reside. so first, i want to crawl some images and their web pages.....need to save the crawl result in local disk for further analysis. I wonder if there is any open source for this issue? thx^_^

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  • Windows 7,find who accessed my computer on network?

    - by pg2012
    It seems something tried to delete root c:/ folders on my computer and it did started delete process alphabetical order. Not sure what is cause. any known virus? We have company network edition of antivirus running, and full scan did not found any virus activity. That makes me suspious about someone on company network attempt to delete? can this possible? If it is how do we know from windows server that who accessed my computer over network?

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  • Can I upload an object in memory to FTP using Python?

    - by fsckin
    Here's what I'm doing now: mysock = urllib.urlopen('http://localhost/image.jpg') fileToSave = mysock.read() oFile = open(r"C:\image.jpg",'wb') oFile.write(fileToSave) oFile.close f=file('image.jpg','rb') ftp.storbinary('STOR '+os.path.basename('image.jpg'),f) os.remove('image.jpg') Writing files to disk and then imediately deleting them seems like extra work on the system that should be avoided. Can I upload an object in memory to FTP using Python?

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  • SQLAuthority News – Three Posts on Reporting – T-SQL Tuesday #005

    - by pinaldave
    If you are following my blog, you already know that I am more of “T-SQL and Performance Tuning” type of person. I do have a good understanding of Business Intelligence suit and I also do certain training sessions on the same subject. When I was writing the blog post for T-SQL Tuesday #005 – Reporting, I realized that I have written a post that clearly explains how to generate reports using SQL Server Management Studio. Here is a quick recap on how one can use SSMS and out-of-the-box reports which can help many developers. Please note that they can be resource-intensive as well, so please use SSMS carefully. SQL SERVER – Generate Report for Index Physical Statistics – SSMS SQL SERVER – Out of the Box – Activity and Performance Reports from SSSMS SQL SERVER – Configure Management Data Collection in Quick Steps – T-SQL Tuesday #005 Junior developers and DBA can use these reports right away and can also start learning and exploring most database performance issues with the help of Sr. DBAs. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Server Management Studio, SQL Tips and Tricks, T SQL, Technology Tagged: SQL Reporting, SQL Reports

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  • CodePlex Daily Summary for Friday, March 05, 2010

    CodePlex Daily Summary for Friday, March 05, 2010New Projects.svn Folders Cleanup Tool: dotSVN Cleanup is a tool that allows you to remove the .svn folders . Just click, browse, say abracadabra ...and the magic is done. Have fun with...Accord: The Accord framework creates an easy we to integrate any Dependency Injection framework into your project, while abstracting the details of your im...Asp.net MVC Lab: Try asp.net mvc outASP.NET Themes management with Webforms: The provided source is an example for how to use themes in ASP.NET Webforms. this source is the "up to date" support for the article I wroteB&W Port Scanner: B&W Port Scanner (formerly Net Inspector) is a fast TCP Port scan utility. The main idea is support of customizable operations to be performed f...BizTalk SWAT - Simple Web Activity Tracker: This is a web based version of BizTalk HAT. The concept is designed to be able to share and enable sharing of orchestration info easily. Some of th...C# Linear Hash Table: A C# dictionary-like implementation of a linear hash table. It is more memory efficiant than the .NET dictionary, and also almost as fast. NOTE: On...DBF Import Export Wizard: DBF Import Export Wizard is a tool for anyone needing to import DBF files into SQL Server or to export SQL Server tables to a DBF file. This proje...Domain as XML - Driven Development: Visual Studio Code Samples: Domain as XML - Driven Development: Visual Studio Code SamplesEasyDownload: This application allows to manage downloads handling an stack of files and several useful configurationsEos2: .FlightTickets: This application allows to buy flight ticketsFotofly PhotoViewer: A Silverlight control that uses the Fotofly metadata library to show the people in a photo (using Windows Live Photo Gallery People metadata) and a...Fujiy source code: Source code examplesGameSet: This application allows to play games with distributed users.Injectivity (Dependency Injection): Injectivity is a dependency injection framework (written in C#) with a strong focus on the ease of configuration and performance. Having been writt...Inventory: Keep track of inputs, materias and salesLoanTin.Com Source Code: LoanTin.Com - a Social Networking Website as same as Tumblr.com, based on source code of Loantiner Project, allow anyone can share anything to anyo...mysln: my solutions.NumTextBox: TextBox控件重写 之NumTextBox,主要实现的功能是,只允许输入数字,或String,Numeric,Currency,Decimal,Float,Double,Short,Int,Long 修改自:http://www.codeproject.com/KB/edit/num...Quick Performance Monitor: This small utility helps to monitor performance counters without using the full blown perfmon tool from Windows. It supports a number of command li...Runo: Runo ResearchSales: This application allows to manage a hardware storeScrewWiki Form Auth Provider: Enables your ASP.NET site to use Forms Authentication to integrate with your ScrewWiki. User management is performed on a parent site, and cookie i...SDS: Scientific DataSet library and tools: The SDS library makes it easy for .Net developers to read, write and share scalars, vectors, matrices and multidimensional grids which are very com...ShapeSweeper: Minesweeper-like game for the Zune HD. Each hidden object has three properties to discover--location, color, and shape--and all three must be corre...SilverlightExcel: an Excel file viewer in Silverlight 4: SilverlightExcel is a Silverlight application allowing you to open and view Excel files and also create graphs.sPWadmin: pwAdmin is an Web Interface based on JSP that uses the PW-Java API to control an PW-Server.Video Player control in Silverlight: A control for playing video in Silverlight 4 with chapters on timeline control. This player will be easily skinnable and customizable. More Featur...XNA Light Pre Pass Renderer: A demo/sample that shows how to write a light pre pass renderer in XNA.Zimms: Collaboration Site for friends, a code depot, and scratch padNew Releases.svn Folders Cleanup Tool: dotSVN Cleanup Tool: dotSVN Cleanup Tool executableAccord: Alpha: Initial build of the Accord framework.AcPrac: AcPrac Ver 0.1: The first version of AcPrac. It is not fully functional, but rather a version to get the bugs out. Please report all bugs.ASP.NET: ASP.NET Browser Definition Files: This download contains: ASP.NET 4 Browser Definition Files -- You can use the new ASP.NET 4 browser definition files with earlier versions of ASP....B&W Port Scanner: Black`n`White Port Scanner 1.0: B&W Port Scanner 1.0 Final Release Date: 03.03.2010 Black`n`WhiteBizTalk SWAT - Simple Web Activity Tracker: BizTalk SWAT: This is a web based version of BizTalk HAT. The concept is designed to be able to share and enable sharing of orchestration info easily. It uses th...BTP Tools: CSB+CUV+HCSB dict files 2010-03-04: 5. is now missing a space between the Strong’s number and the Count: >CSB Translation: 圣所 7, 至圣所G39+G394 it should be: CSB Translation: 圣所 7, 至圣所G...C# Linear Hash Table: Linear Hash Table: First working version of the Linear Hash Table.Cassiopeia: WinTools 1.0 beta: First ReleaseComposure: Caliburn-44007-trunk-vs2010.net40: This is a very simple conversion of the Caliburn trunk (rev 44007) for use in Visual Studio 2010 RC1 built against .NET40. Because the conversion w...Cover Creator: CoverCreator 1.3.0: English and Polish version. Functionality to add image to the front page. Load / save covers.DBF Import Export Wizard: DBF Import Export Wizard Source Code: Version 0.1.0.3DBF Import Export Wizard: DBF_Import_Export_Wizard Setup 0.1.0.3: Zip file contains Setup.exeESB Toolkit Extensions: Tellago BizTalk ESB 2.0 Toolkit Extensions v0.2: Windows Installer file that installs Library on a BizTalk ESB 2.0 system. This Install automatically configures the esb.config to use the new compo...Fotofly PhotoViewer: Fotofly Photoview v0.1: The first public release. Based on a Silverlight application I have been using for over a year at www.tassography.com. This version uses Fotofly v0...HPC with GPUs applied to CG: Cuda Soft Bodies simulation: Cuda src for soft bodiesHPC with GPUs applied to CG: Full Soft Bodies src: full src code for soft bodies simulationInjectivity (Dependency Injection): 2.8.166.2135: Release 2.8.166.2135 of the Injectivity dependency injection framework.Line Counter: 1.5 (Code Outline Preview): This version contains preview of the code outline feature, you can now view C# code outline within Line Counter. Note that the code outline now onl...Micajah Mindtouch Deki Wiki Copier: MicajahWikiCopier: You should use the following line arguments: WikiCopier.exe "http://oldwikiwithdata.wik.is/@api/deki" "login" "password" "http://newwiki.somename.l...ncontrols: Alpha 0.4.0.1: Added some example on the Console Project.NumTextBox: NumTextBox初始版本: TextBox控件重写 之NumTextBox,主要实现的功能是,只允许输入数字,或String,Numeric,Currency,Decimal,Float,Double,Short,Int,Long 此为初始版本PSCodeplex: PS CodePlex 0.2: PS CodePlex 0.2 has some breaking changes to the parameters. A few of the parameters are renamed and a few are made as switch parameters. Add-Rele...Quick Performance Monitor: QPerfMon First release - Version 1.0.0: The first release of the utility.RapidWebDev - .NET Enterprise Software Development Infrastructure: ProductManagement Quick Sample 0.2: This is a sample product management application to demonstrate how to develop enterprise software in RapidWebDev. The glossary of the system are ro...ScrewWiki Form Auth Provider: ScrewWiki Forms Authentication: Initial ReleaseSee.Sharper: See.Sharper.Docs-1.10.3.4: HTML documentation (including Doxygen project)See.Sharper: See.Sharper-1.10.3.4: Solution (Source files, debug and release binaries)Solar.Generic: Solar.Generic 0.8.0.0 Beta (Revised, Renamed): Solar.Generic 0.8.0.0 (Revised & Renamed) Renamed project from Solar.Commons to Solar.Generic. Project solution file is now in format of Visual ...Solar.Security: Solar.Security 1.1.0.0: Performed several major refactorings of code base. Stripped In-Memory implementation of IConfiguration interface of transactional behavior due to...sPWadmin: pwAdmin v0.7: -Star System Simulator: Star System Simulator 2.3: Changes in this release: Fixed several localisation issues. Features in this release: Model star systems in 3D. Euler-Cromer method. Improved...SysI: sysi, stable and ready: This time for sure.TheWhiteAmbit: TheWhiteAmbit - Demo: Two little demos demonstrating: - fast realtime raytracing - generating bent normals for shading (CUDA capable GPU needed = nVidia GeForce >8x00)VsTortoise - a TortoiseSVN add-in for Microsoft Visual Studio: VsTortoise Build 22 Beta: Build 22 (beta) New: Visual Studio 2010 RC support (VsTortoise for Visual Studio 2010 RC screenshots) New: VsTortoise integrates in to Solution E...WinMergeFS: WinMergeFS 0.1.42128alpha: WinMergeFS provides AuFS functionality for windows. With WinMergeFS users can mount multiple directories into a virtual drive. Plugin based root se...WSDLGenerator: WSDLGenerator 0.0.0.2: - Bugs fixed - Code refactored - Added support for custom typesXNA Light Pre Pass Renderer: LightPrePassRendererXNA: Zipped source code for the light pre pass renderer made with XNA.Most Popular ProjectsMetaSharpRawrWBFS ManagerAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)LiveUpload to FacebookASP.NETMicrosoft SQL Server Community & SamplesMost Active ProjectsUmbraco CMSRawrBlogEngine.NETSDS: Scientific DataSet library and toolsMapWindow GISpatterns & practices – Enterprise LibraryjQuery Library for SharePoint Web ServicesIonics Isapi Rewrite FilterMDT Web FrontEndDiffPlex - a .NET Diff Generator

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  • Open Source WPF UML Design tool

    - by oazabir
    PlantUmlEditor is my new free open source UML designer project built using WPF and .NET 3.5. If you have used plantuml before, you know that you can quickly create sophisitcated UML diagrams without struggling with a designer. Especially those who use Visio to draw UML diagrams (God forbid!), you will be at heaven. This is a super fast way to get your diagrams up and ready for show. You can *write* UML diagrams in plain English, following a simple syntax and get diagrams generated on-the-fly. This editor really saves time designing UML diagrams. I have to produce quick diagrams to convey ideas quickly to Architects, Designers and Developers everyday. So, I use this tool to write some quick diagrams at the speed of coding, and the diagrams get generated on the fly. Instead of writing a long mail explaining some complex operation or some business process in English, I can quickly write it in the editor in almost plain English, and get a nice looking activity/sequence diagram generated instantly. Making major changes is also as easy as doing search-replace and copy-pasting blocks here and there. You don't get such agility in any conventional mouse-based UML designers. I have submited a full codeproject article to give you a detail walkthrough how I have built this. Please read this article and vote for me if you like it. PlantUML Editor: A fast and simple UML editor using WPF http://www.codeproject.com/KB/smart/plantumleditor.aspx You can download the project from here: http://code.google.com/p/plantumleditor/

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