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• Security of logging people in automatically from another app?

  - by Simon

  I have 2 apps. They both have accounts, and each account has users. These apps are going to share the same users and accounts and they will always be in sync. I want to be able to login automatically from one app to the other. So my solution is to generate a login_key, for example: 2sa7439e-a570-ac21-a2ao-z1qia9ca6g25 once a day. And provide a automated login link to the other app... for example if the user clicks on: https://account_name.securityhole.io/login/2sa7439e-a570-ac21-a2ao-z1qia9ca6g25/user/123 They are logged in automatically, session created. So here we have 3 things that a intruder has to get right in order to gain access; account name, login key, and the user id. Bad idea? Or should I can down the path of making one app an oauth provider? Or is there a better way?

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• Error: type or namespace name 'AssemblyKeyFileAttribute' and 'AssemblyKeyFile' could not be found

  To associate an assembly with a strong key file to store it to GAC, we use should include following line after all the imports and before defing namespace. For VB.NET:  <Assembly: AssemblyKeyFile("c:\path\mykey.snk")> For C#:    [assembly: AssemblyKeyFile(@"c:\path\mykey.snk")] but, you might encounter following two errors at the time of creating Assembly for GAC. 1. The type or namespace name 'AssemblyKeyFileAttribute' could not be found (are you missing a using directive or an assembly reference?) 2. The type or namespace name 'AssemblyKeyFile' could not be found (are you missing a using directive or an assembly reference?) How to resolve these errors: Just include "System.Reflection" namespace. It resolve above two errors. span.fullpost {display:none;}

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• Qt question: hard-coded shortcuts

  - by miLo

  I have asked this question on several places but I still can't figure it out. What I am trying to do is to have a QKeySequence(Qt::CTRL + Qt::Key_X, Qt::CTRL + Qt::Key_C) in a MainWindow with QTextEdit as a central widget. The problem is that I have a shorcut for Cut(Ctrl+X) and when I press Ctrl+X,Ctrl+C it doesn't work. When the focus is on diffrent widget the shorcut works perfectly. I tried with overriding the QWidget::keyPressEvent and QWidget::event but it is the same. I have one more question: if I have these two shorcuts Ctrl+X and Ctrl+XCtrl+C why I don't receive the signal activatedAmbigiously() when I press Ctrl+X? According to the Qt documentation When a key sequence is being typed at the keyboard, it is said to be ambiguous as long as it matches the start of more than one shortcut.

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• Firefox 3.6 and above. Always show one tab even if all tabs are closed like Firefox 3.0

  - by Jayapal Chandran

  I very much got used to Firefox 3.0. In that, to free the memory, I close all tabs but still the main Firefox window does not close. But in Firefox 3.6 and later if I want to close all tabs and if I do so then Firefox totally exists. This is not the case with 3.0. How to stop Firefox from not closing the main process even if I close all threads (tabs)? The autocomplete feature in the address bar of Firefox 3.6 and greater is in a dark blue color which makes me very much annoyed. With my environment and the monitor glare that is inducing anger in me, so how the color be changed to be like Firefox 3.0? Because you know that black and white are a neutral and good combination and since I have been working in Firefox 3.0 (and earlier versions) for a long time this new color change and other uncomfortable options are making me sick. To check CSS3 I need to use Firefox 3.5 and greater. Besides I like Firefox because it includes the W3C's recommendations so I can learn and test new recomendations from W3C.

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• Best photo management software?

  - by Niels Basjes

  Hi, What I would like is a single piece of software (or a smart combination of tools) that allow me to manage my photos in a better way than what I've found so far. 1. Tags Primarily I need a way of tagging the images. So I can manually tag photos the same way we tag questions here at SO/SF/SU. I want this software to place a lot of the tags automagically (obvious things like date and resolution). 2. Face recognition What I would really like is that this software has a feature that it can recognize faces in images and places tags with the name of the person. So far I've only heard of one online photo system that can do that (Picasa) and not yet of any offline tool. 3. Version database I must have some way of having a central GIT/SVN/... that contains all images. I have had a harddrive corruption a few years ago and it took me a long time to figure out which images had been damaged. I always want to be able to go back to what the camera produced. 4. Website I want to be able to generate a website (few 'tag' specific websites) based on the actual content. 5. Easy bulk uploading Many photo tools have a one on one uploading option. I prefer simply 'throwing' my images on a file server under Linux (Samba) and let the system automagically integrate, tag, recognize, etc. all images. Ok, I know these are a bit much. Perhaps you guy's have some suggestions about existing tools that can make this possible. Or even a complete system that does this. EDIT: To clarify on the OS. I prefer Linux for any 'server' task and Windows XP for any 'desktop' task. Thanks for all your input. Niels Basjes

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• Access Services in SharePoint Server 2010

  - by Wayne

  Another SharePoint Server 2010 feature which cannot go unnoticed is the Access Services. Access Services is a service in SharePoint Server 2010 that allows administrators to view, edit, and configure a Microsoft access application within a Web Browser. Access Services settings support backup and recovery, regardless of whether there is a UI setting in Central Administration. However, backup and recovery only apply to service-level and administrative-level settings; end-user content from the Access application is not backed up as part of this process. Access Services has Windows PowerShell functionality that can be used to provide the service that uses settings from a previous backup; configure and manage macro and query setting; manage and configure session management; and configure all the global settings of the service. Key Benefits of SharePoint Server Access Services Easier Access to right tools: The enhanced, customizable Ribbon in Access 2010 makes it easy to uncover more commands so you can focus on the end product. The new Microsoft Office BackstageTM view is yet another feature that can help you easily analyze and document your database, share, publish, and customize your Access 2010 experience, all from one convenient location. Helps build database effortlessly and quickly: Out-of-the box templates and reusable components make Access Services the fastest, simplest database solution available. It helps find new pre-built templates which you can start using without customization or select templates created by your peers in the Access online community and customize them to meet your needs. It builds your databases with new modular components. New Application Parts enable you to add a set of common Access components, such as a table and form for task management, to your database in a few simple clicks. Database navigation is now simplified. It creates Navigation Forms and makes your frequently used forms and reports more accessible without writing any code or logic. Create Impactful forms and reports: Whether it's an inventory of your assets or customer sales database, Access 2010 brings the innovative tools you'd expect from Microsoft Office. Access Services easily spot trends and add emphasis to your data. It quickly create coordinating database forms and reports and bring the Web into your database. Obtain a centralized landing pad for your data: Access 2010 offers easy ways to bring your data together and help increase work quality. New technologies help break down barriers so you can share and work together on your databases, making you or your team more efficient and productive. Add automation and complex expressions: If you need a more robust database design, such as preventing record deletion if a specific condition is met or if you need to create calculations to forecast your budget, Access 2010 empowers you to be your own developer. The enhanced Expression Builder greatly simplifies your expression building experience with IntelliSense®. With the revamped Macro Designer, it's now even easier for you to add basic logic to your database. New Data Macros allow you to attach logic to your data, centralizing the logic on the table, not the objects that update your data. Key features of Access Services 2010 - Access database content through a Web browser: Newly added Access Services on Microsoft SharePoint Server 2010 enables you to make your databases available on the Web with new Web databases. Users without an Access client can open Web forms and reports via a browser and changes are automatically synchronized. - Simplify how you access the features you need: The Ribbon, improved in Access 2010, helps you access commands even more quickly by enabling you to customize or create your own tabs. The new Microsoft Office Backstage view replaces the traditional File menu to provide one central, organized location for all of your document management tasks. - Codeless navigation: Use professional looking web-like navigation forms to make frequently used forms and reports more accessible without writing any code or logic. - Easily reuse Access items in other databases: Use Application Parts to add pre-built Access components for common tasks to your database in a few simple clicks. You can also package common database components, such as data entry forms and reports for task management, and reuse them across your organization or other databases. - Simplified formatting: By using Office themes you can create coordinating professional forms and reports across your database. Simply select a familiar and great looking Office theme, or design your own, and apply it to your database. Newly created Access objects will automatically match your chosen theme.

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• How to obtain a S/MIME certificate for e-mail encryption?

  - by mghg

  There are parties, e.g. enterprises, that uses S/MIME certificates for e-mail encryption. To my understanding Thunderbird has support by default for S/MIME. But I have not found a way to obtain a personal S/MIME certificate to be used on a Ubuntu system. Thus my question: How to obtain a S/MIME certificate for e-mail encryption? Moreover, is it correct to believe that Thunderbird has support by default for S/MIME? I am fully aware of PGP, GnuPG and OpenPGP for public-key cryptography and secure e-mail communication. In my opinion, it is very useful that OpenPGP is installed by default on Ubuntu systems. But I need to find a method to communicate securely with parties that use S/MIME and not PGP/GnuPG/OpenPGP.

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• Juju bootstrap fails with "Temporary failure in name resolution" using Amazon AWS

  - by Will

  I have followed the instructions over at https://juju.ubuntu.com/docs/config-aws.html to try and setup myself with a juju environment. It all seemed to setup alright. SSH keys, Gererate config, repository, adding access id and secret keys to environments.yaml file. Although my key file from aws IAM management console was called credentials.csv rather than rootkey, I couldn't find that link described in the documentation. When I give the command juju bootstrap in the testing page. It fails giving me the error: juju bootstrap ERROR Get https://s3-us-west-1.amazonaws.com/juju-gobblygookmynukmbersinhere/provider-state: lookup s3-us-west-1.amazonaws.com: Temporary failure in name resolution (note I just replaced my numbers for this posting my actual terminal has my numbers in. This is my first attempt at any ec2 work so I have gone in and created new IAM profiles. What have I done wrong? Any help would be great. I think I'm in over my head!

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• Frame Interpolation issues for skeletal animation

  - by sebby_man

  I'm trying to animate in-between keyframes for skeletal animation but having some issues. Each joint is represented by a quaternion and there is no translation component. When I try to slerp between the orientations at the two key frames, I got a very wacky animation. I know my skinning equation is right because the animation is perfectly fine when the animation is directly on a keyframe rather than in-between two. I'm using glm's built in mix function to do the slerp, so I don't think there are any problems with the actual slerp implementation. There's really one thing left that could be wrong here. I must not be in the correct space to do slerp. Right now the orientations are in joint local space. Do I have to be in world space? In some other space along the way? I have the bind pose matrix and world-space transformation matrix at my disposal if those are needed.

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• One-line command to download Ubuntu ISO?

  - by James Mitch

  I want to download an Ubuntu ISO, preferably over bittorrent, and verify its integrity. Currently, the following steps are required: start web browser, go to ubuntu.com, find download link find gpg signature for the checksums get the gpg key to check gpg signature of the checksums wait until download finished gpg verifiy checksum verification Isn't there a simpler way? Just like apt-get install 12.04-64bit-ubuntu-iso apt-get install 12.04-32bit-server-iso etc.? Of course, apt-get (or whatever it would be called) should download over bittorrent to remove load from the servers. If it doesn't exist, it should probable post that at ubuntu brainstorm? Is there already such a tool? I wanted to ask before posting to brainstorm.

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• Windows Azure: Server and Cloud Division

  - by kaleidoscope

  On 8th Dec 2009 Microsoft announced the formation of a new organization within the Server & Tools Business that combines the Windows Server & Solutions group and the Windows Azure group, into a single organization called the Server & Cloud Division (SCD). SCD will deliver solutions that help our customers realize even greater benefits from Microsoft’s investments in on-premises and cloud technologies.  And the new division will help strengthen an already solid and extensive partner ecosystem. Together, Windows Server, Windows Azure, SQL Server, SQL Azure, Visual Studio and System Center help customers extend existing investments to include a future that will combine both on-premises and cloud solutions, and SCD is now a key player in that effort. http://blogs.technet.com/windowsserver/archive/2009/12/08/windows-server-and-windows-azure-come-together-in-a-new-stb-organization-the-server-cloud-division.aspx   Tinu, O

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• How to use call web service action in SharePoint2013 workflow

  - by ybbest

  In SharePoint2013, you can use call web service action and loop. In this post, I will show you how to achieve this. 1. Create a List workflow called CallWebService 2. Create a variable called listurl and assign the value to http://sp2010/_vti_bin/listdata.svc 3. Create a dictionary variable called RequestHeaders and add the following key value pairs. 4. Call the web service with the HttpHeaders you just build in the previous step and store the response in the variable ResponseContent. 5. The ResponseContent variable is the Dynamic values (in SharePoint designer it will be called dictionary type) and it is new feature for SharePoint2013 workflow. We can use the following actions to count the number items in the variable. 6. You can use loop in SharePoint 2013 workflow and out each list title as shown below.

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• Optimize shell and awk script

  - by bryan

  I am using a combination of a shell script, awk script and a find command to perform multiple text replacements in hundreds of files. The files sizes vary between a few hundred bytes and 20 kbytes. I am looking for a way to speed up this script. I am using cygwin. The shell script - #!/bin/bash if [ $# = 0 ]; then echo "Argument expected" exit 1 fi while [ $# -ge 1 ] do if [ ! -f $1 ]; then echo "No such file as $1" exit 1 fi awk -f ~/scripts/parse.awk $1 > ${1}.$$ if [ $? != 0 ]; then echo "Something went wrong with the script" rm ${1}.$$ exit 1 fi mv ${1}.$$ $1 shift done The awk script (simplified) - #! /usr/bin/awk -f /HHH.Web/{ if ( index($0,"Email") == 0) { sub(/HHH.Web/,"HHH.Web.Email"); } printf("%s\r\n",$0); next; } The command line find . -type f | xargs ~/scripts/run_parser.sh

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• Simple Project Templates

  - by Geertjan

  The NetBeans sources include a module named "simple.project.templates": In the module sources, Tim Boudreau turns out to be the author of the code, so I asked him what it was all about, and if he could provide some usage code. His response, from approximately this time last year because it's been sitting in my inbox for a while, is below. Sure - though I think the javadoc in it is fairly complete.  I wrote it because I needed to create a bunch of project templates for Javacard, and all of the ways that is usually done were grotesque and complicated.  I figured we already have the ability to create files from templates, and we already have the ability to do substitutions in templates, so why not have a single file that defines the project as a list of file templates to create (with substitutions in the names) and some definitions of what should be in project properties. You can also add files to the project programmatically if you want.Basically, a template for an entire project is a .properties file.  Any line which doesn't have the prefix 'pp.' or 'pvp.' is treated as the definition of one file which should be created in the new project.  Any such line where the key ends in * means that file should be opened once the new project is created.  So, for example, in the nodejs module, the definition looks like: {{projectName}}.js*=Templates/javascript/HelloWorld.js .npmignore=node_hidden_templates/npmignore So, the first line means:  - Create a file with the same name as the project, using the HelloWorld template    - I.e. the left side of the line is the relative path of the file to create, and the right side is the path in the system filesystem for the template to use       - If the template is not one you normally want users to see, just register it in the system filesystem somewhere other than Templates/ (but remember to set the attribute that marks it as a template)  - Include that file in the set of files which should be opened in the editor once the new project is created. To actually create a project, first you just create a new ProjectCreator: ProjectCreator gen = new ProjectCreator( parentFolderOfNewProject ); Now, if you want to programmatically generate any files, in addition to those defined in the template, you can: gen.add (new FileCreator("nbproject", "project.xml", false) {     public DataObject create (FileObject project, Map<String,String> substitutions) throws IOException {          ...     } }); Then pass the FileObject for the project template (the properties file) to the ProjectCreator's createProject method (hmm, maybe it should be the string path to the project template instead, to save the caller trouble looking up the FileObject for the template).  That method looks like this: public final GeneratedProject createProject(final ProgressHandle handle, final String name, final FileObject template, final Map<String, String> substitutions) throws IOException { The name parameter should be the directory name for the new project;  the map is the strings you gathered in the wizard which should be used for substitutions.  createProject should be called on a background thread (i.e. use a ProgressInstantiatingIterator for the wizard iterator and just pass in the ProgressHandle you are given). The return value is a GeneratedProject object, which is just a holder for the created project directory and the set of DataObjects which should be opened when the wizard finishes. I'd love to see simple.project.templates moved out of the javacard cluster, as it is really useful and much simpler than any of the stuff currently done for generating projects.  It would also be possible to do much richer tools for creating projects in apisupport - i.e. choose (or create in the wizard) the templates you want to use, generate a skeleton wizard with a UI for all the properties you'd like to substitute, etc. Here is a partial project template from Javacard - for example usage, see org.netbeans.modules.javacard.wizard.ProjectWizardIterator in javacard.project (or the much simpler one in contrib/nodejs). #This properties file describes what to create when a project template is#instantiated.  The keys are paths on disk relative to the project root. #The values are paths to the templates to use for those files in the system#filesystem.  Any string inside {{ and }}'s will be substituted using properties#gathered in the template wizard.#Special key prefixes are #  pp. - indicates an entry for nbproject/project.properties#  pvp. - indicates an entry for nbproject/private/private.properties #File templates, in format [path-in-project=path-to-template]META-INF/javacard.xml=org-netbeans-modules-javacard/templates/javacard.xmlMETA-INF/MANIFEST.MF=org-netbeans-modules-javacard/templates/EAP_MANIFEST.MF APPLET-INF/applet.xml=org-netbeans-modules-javacard/templates/applet.xmlscripts/{{classnamelowercase}}.scr=org-netbeans-modules-javacard/templates/test.scrsrc/{{packagepath}}/{{classname}}.java*=Templates/javacard/ExtendedApplet.java nbproject/deployment.xml=org-netbeans-modules-javacard/templates/deployment.xml#project.properties contentspp.display.name={{projectname}}pp.platform.active={{activeplatform}} pp.active.device={{activedevice}}pp.includes=**pp.excludes= I will be using the above info in an upcoming blog entry and provide step by step instructions showing how to use them. However, anyone else out there should have enough info from the above to get started yourself!

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• Blog comment spammers &hellip; help!

  - by Steve Clements

  Hey, I need some advice/help, now I’ve been writing on this blog for a few years, I don’t blog a great deal in comparison to many of my peers and my blog doesn’t get a massive number of hits, BUT I seem to get a fair share of comments spammers!! I have an image verification on the comments and I have put an Akismet API key into the Geekswithblogs settings, but I still get a bunch of spam comments. They could almost be real, until you see the link going off to some dating site or casino crap. What does everyone do?? Delete them every time?? Moderate comments?? I would rather not moderate comments if possible, but is that the only way to stop the crap?? Thx Technorati Tags: spammers,comments,help

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• Backup solution, or, how Duplicati duped me

  - by blarghmaster

  TL/DR version: Mono + Duplicati.commandline.exe restore etc. etc. spits this out for several files regardless of what I try. I am able to list sets, list files in said sets, even do a verify, but each time i do a restore of any kind, i get errors to the effect of : Failed to restore file: "snapshot/blahblah/2005-11-07.tar.gz", Error message: The partial file record for snapshot/blahblah/2005-11-07.tar.gz does not match the file Any advice here, or an idea of where to look for a better solution? FULL STORY: Ive recently put together an nice clean, friendly backup solution for several servers, predominantly Linux, but occasionally a windows box is added too. The solution as is meets all my requirements and does it well... save 1: cross-compatibility The solution is based on a combination of several elements, but eventually comes done to using Duplicity and Duplicati for the actual storage of files. The entire solution was ready to go before i realized that Duplicati, does not, in fact allow me to restore my files to a Linux box, regardless of what the commandline under Mono might tell you. It just spits out errors on random zip and image files, for apparently no good reason as i have tried several options to get it to restore, and several versions of Mono including installing it pretty much lib-for-lib. There is no effective log file for the reasons for these errors, and even the "--debug-output=true" flag does nothing. I am able to list sets, list files in said sets, even do a verify, but each time i do a restore of any kind, i get errors to the effect of : Failed to restore file: "snapshot/blahblah/2005-11-07.tar.gz", Error message: The partial file record for snapshot/blahblah/2005-11-07.tar.gz does not match the file Now i could most likely use the friendly instructions on Duplicati's site and script a bash equivalent of the restore, but that's not exactly ideal. Any advice on this? or possibly an alternative solution that presents the same benefits of Duplicati/Duplicity but that actually works across platforms?

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• Error setting up Blackberry Internet Service with Outlook Web Access

  - by Travis

  I'm trying to set up Blackberry Internet Service to connect to our Windows SBS2003 outlook web access. I've tried every possible combination of credentials by I always get the same error: An error occured during email account validation. Please check your information and try again. If the error persists please contact your System Administrator. The fields are the following: Outlook Web Access URL: http://mail.domain.com/exchange (I've also tried just using the IP address http://000.000.000.000/exchange with no effect). User Name: JohnDoe (same as OWA login / domain username - I've also tried DOMAIN\JohnDoe) Email Address: [email protected] Mailbox Name: This one confused me a little bit, but it seems it should be the same as the domain username (eg. JohnDoe). I've also tried DOMAIN\JohnDoe, and a number of other things. No matter what I do, I get the same error message. At this point, I'm basically just trying things, because I don't really know how this service is supposed to work. Does anyone know what causes this particularly vague error message, and what I can change either in my email settings or on our exchange server to resolve this?

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• Tuxedo 12c

  - by JuergenKress

  Tuxedo 12c (12.1.1) release is now generally available. This major release includes a significant number of new features, In the case you missed the launch webcast – you can watch it on.demand. Key new Features include: Cloud Ready Infrastructure Optimized for Exalogic with 8X throughput Management/Monitoring Integrated with Enterprise Manager 12c For Mainframe COBOL Applications running on CICS, IMS, Batch New Messaging Solution: Tuxedo Message Queue 12c Ease of Application Development Solaris Studio IDE for Developing Tuxedo Applications Extend C, C++, COBOL Applications with Java POJOs Accelerated Migration of Large-scale Mainframe Applications At our WebLogic Community Workspace you can get the latest ppt presentations for your customer meetings: Tux ART 12c Launch Webcast Hasan Ajay v18.pptx Tux12claunch-techwebcast_v11.pptx Tuxedo_on_exalogic_external_v3.pptx For the more Tuxedo information, please visit the WebLogic Community Workspace (WebLogic Community membership required). WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. BlogTwitterLinkedInMixForumWiki Technorati Tags: Tuxedo,Tuxedo 12c,WebLogic Community,Oracle,OPN,Jürgen Kress

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• Oracle Enterprise Data Quality - Geared Up and Ready for OpenWorld 2012

  - by Mala Narasimharajan

  10 days and counting till Oracle OpenWorld 2012 is upon us.  Enterprise data quality is key to every information integration and consolidation initiative. At this year's OpenWorld, hear how Oracle Enterprise Data Quality provides the critical piece to achieving trusted, reliable master data and increases the value of data integration initiatives. Here are the different ways you can learn and experience Enterprise Data Quality at OpenWorld:  Conference sessions: Oracle Enterprise Data Quality: Product Overview and Roadmap - Monday 10/1/12, 1:45-2:45 PM - Moscone West - 3006 Data Preparation and Ongoing Governance with the Oracle Enterprise Data Quality Platform - Wednesday 10/3/2012, 1:15-2:15 PM - Moscone West - 3000  Data Acquisition, Migration and Integration with the Oracle Enterprise Data Quality Platform - Thursday 10/4/2012, 12:45-1:45 PM - Moscone West - 3005  Hands on Labs: Introduction to Oracle Enterprise Data Quality Platform -  Monday 10/2/2012, 4:45-5:45 PM - Marriot Marquis - Salon 1/2 Demos:  Trusted Data with Oracle Enterprise Data Quality - Moscone South, Right - S-243 (note: proceed to Middleware Demo grounds) For a list of Master Data Management and Data Quality sessions and other events click here. 

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• NEW: Oracle Practice Exams

  - by Harold Green

  The Oracle University team continues to strive to make high-quality certification preparation tools available to our candidates. In support of this effort, we have expanded our relationship with Kaplan SelfTest.   Kaplan SelfTest is now an Oracle Authorized Practice Test Provider delivering a new feature-rich and fully authorized series of certification practice exams. Practice tests are one of the most effective ways candidates can prepare for an Oracle certification exam. Authorized practice exams help candidates to self assess their knowledge using realistic exam simulations. These practice exams utilize best-in-class practice exam tools including: Learning Mode (fully customize your own practice exam preferences), Certification Mode (simulates a real, timed testing situation) and Flash Cards (self check on key topical concepts). Customers may purchase practice exams from Oracle, with 30-day or 12-month access, or from Kaplan SelfTest directly. As an added benefit, Oracle University Learning Credits may be applied to purchases made from Oracle. View a current list of available practice tests.

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• running apt-get update shows GPG error

  - by Dinesh

  I am getting below GPG error on running the command sudo apt-get update. W: GPG error: http://in.archive.ubuntu.com precise Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <[email protected]> W: Duplicate sources.list entry http://archive.canonical.com/ubuntu/ precise/partner i386 Packages (/var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-i386_Packages) Also, I am not able to install applications from software center. Every time I install it shows a dialog box with the message, Requires Installation of Untrusted packages The action would require the installation of packages from not authenticated sources. OK or Repair options does nothing.

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• how to integrate plastic scm with jira? [closed]

  - by bilal fazlani

  I am trying to migrate from VSS to Plastic SCM and want to use it with JIRA. I have reached this far. http://i.stack.imgur.com/h1wSw.png I tried referring to their help documentation. but that did not help. Does someone know how to link a new branch to an issue in JIRA ? I tried to giving same name to Issue and Branch. That din't work. If the Issue key is : "DEMO-7", what should be the "Branch Prefix" & "Branch Name" in Plastic SCM ? I am sure I am missing something.

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• No keyboard input until after GRUB

  - by Dave M G

  I have a computer that I dual boot between Ubuntu 11.10 and Windows 7. I installed Windows first, and Ubuntu second. When I boot, the GRUB menu comes up, showing me the option to select to boot to Ubuntu at the top of the list, and to boot to Windows at the bottom. Unfortunately, as far as I can tell, any key I press on the keyboard (connected by USB) does not get any response, so I can't actually select to boot to anything but Ubuntu (which is the default selection). Once Ubuntu loads and I am at the log in screen, then the keyboard (and mouse) work perfectly normally thereafter. Why would my keyboard not work only during GRUB? And how do I fix it?

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• InnoDB Compression Improvements in MySQL 5.6

  - by Inaam Rana

  MySQL 5.6 comes with significant improvements for the compression support inside InnoDB. The enhancements that we'll talk about in this piece are also a good example of community contributions. The work on these was conceived, implemented and contributed by the engineers at Facebook. Before we plunge into the details let us familiarize ourselves with some of the key concepts surrounding InnoDB compression. In InnoDB compressed pages are fixed size. Supported sizes are 1, 2, 4, 8 and 16K. The compressed page size is specified at table creation time. InnoDB uses zlib for compression. InnoDB buffer pool will attempt to cache compressed pages like normal pages. However, whenever a page is actively used by a transaction, we'll always have the uncompressed version of the page as well i.e.: we can have a page in the buffer pool in compressed only form or in a state where we have both the compressed page and uncompressed version but we'll never have a page in uncompressed only form. On-disk we'll always only have the compressed page. When both compressed and uncompressed images are present in the buffer pool they are always kept in sync i.e.: changes are applied to both atomically. Recompression happens when changes are made to the compressed data. In order to minimize recompressions InnoDB maintains a modification log within a compressed page. This is the extra space available in the page after compression and it is used to log modifications to the compressed data thus avoiding recompressions. DELETE (and ROLLBACK of DELETE) and purge can be performed without recompressing the page. This is because the delete-mark bit and the system fields DB_TRX_ID and DB_ROLL_PTR are stored in uncompressed format on the compressed page. A record can be purged by shuffling entries in the compressed page directory. This can also be useful for updates of indexed columns, because UPDATE of a key is mapped to INSERT+DELETE+purge. A compression failure happens when we attempt to recompress a page and it does not fit in the fixed size. In such case, we first try to reorganize the page and attempt to recompress and if that fails as well then we split the page into two and recompress both pages. Now lets talk about the three major improvements that we made in MySQL 5.6.Logging of Compressed Page Images:InnoDB used to log entire compressed data on the page to the redo logs when recompression happens. This was an extra safety measure to guard against the rare case where an attempt is made to do recovery using a different zlib version from the one that was used before the crash. Because recovery is a page level operation in InnoDB we have to be sure that all recompress attempts must succeed without causing a btree page split. However, writing entire compressed data images to the redo log files not only makes the operation heavy duty but can also adversely affect flushing activity. This happens because redo space is used in a circular fashion and when we generate much more than normal redo we fill up the space much more quickly and in order to reuse the redo space we have to flush the corresponding dirty pages from the buffer pool.Starting with MySQL 5.6 a new global configuration parameter innodb_log_compressed_pages. The default value is true which is same as the current behavior. If you are sure that you are not going to attempt to recover from a crash using a different version of zlib then you should set this parameter to false. This is a dynamic parameter.Compression Level:You can now set the compression level that zlib should choose to compress the data. The global parameter is innodb_compression_level - the default value is 6 (the zlib default) and allowed values are 1 to 9. Again the parameter is dynamic i.e.: you can change it on the fly.Dynamic Padding to Reduce Compression Failures:Compression failures are expensive in terms of CPU. We go through the hoops of recompress, failure, reorganize, recompress, failure and finally page split. At the same time, how often we encounter compression failure depends largely on the compressibility of the data. In MySQL 5.6, courtesy of Facebook engineers, we have an adaptive algorithm based on per-index statistics that we gather about compression operations. The idea is that if a certain index/table is experiencing too many compression failures then we should try to pack the 16K uncompressed version of the page less densely i.e.: we let some space in the 16K page go unused in an attempt that the recompression won't end up in a failure. In other words, we dynamically keep adding 'pad' to the 16K page till we get compression failures within an agreeable range. It works the other way as well, that is we'll keep removing the pad if failure rate is fairly low. To tune the padding effort two configuration variables are exposed. innodb_compression_failure_threshold_pct: default 5, range 0 - 100,dynamic, implies the percentage of compress ops to fail before we start using to padding. Value 0 has a special meaning of disabling the padding. innodb_compression_pad_pct_max: default 50, range 0 - 75, dynamic, the  maximum percentage of uncompressed data page that can be reserved as pad.

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• Is there any new method for link-backs [on hold]

  - by Mir Hammad

  As all SEOs know that google is trying its very best to kill SEO and linkbacks are quite a difficult task now. Although content is the key but my boss is still possessed with linkbacks. I can not do directory posting, link exchange, paid linking, web 2.0 and blog commenting as they are spam now. I do not see what other choice i have except forum posting and article posting. Can someone suggest new method to acquire link backs ? I know almost all traditional methods so don't say press release or etc. If you really have something out of the box or not very much common please share.

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