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• how to add programs to ubuntu without internet access

  - by captainandcoke

  I don't have internet access at my home and it takes me about a half hour to ride my bike to the library. I have downloaded .deb files to try to install at my home computer but everyone I have downloaded says it can't install because it depends on package X. The next day I will download package X and it will require package Y. Is there anyway to find out what ALL the sub-dependencies are for deb files? I have tried to boot from USB or External Hard drive on the library computers but the security settings prevent this. Also, I do not know anyone with a Linux computer.

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• How can I keep gnu screen from becoming unresponsive after losing my SSH connection?

  - by Mikey

  I use a VPN tunnel to connect to my work network and then SSH to connect to my work PC running cygwin. Once logged in I can attach to a screen session and everything works great. Now, after a while, I walk away from my computer and sooner or later, the VPN tunnel times out. The SSH connection on each end eventually times out and then I eventually come back to my computer to do some work. Theoretically, this should be a simple matter of just restarting the VPN, reconnecting via SSH, and then running "screen -r -d". However apparently when the sshd daemon times out on the cygwin PC, it leaves the screen session in some kind of hung state. I can reproduce a similar hung state by clicking the close box on a cygwin bash shell window while it's running a screen session. Is there any way to get the screen session to recover once this has happened, so that I don't lose anything?

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• Avoding multiple thread spawns in pthreads

  - by madman

  Hi StackOverflow, I have an application that is parallellized using pthreads. The application has a iterative routine call and a thread spawn within the rountine (pthread_create and pthread_join) to parallelize the computation intensive section in the routine. When I use an instrumenting tool like PIN to collect the statistics the tool reports statistics for several threads(no of threads x no of iterations). I beleive it is because it is spawning new set of threads each time the routine is called. How can I ensure that I create the thread only once and all successive calls use the threads that have been created first. When I do the same with OpenMP and then try to collect the statistics, I see that the threads are created only once. Is it beacause of the OpenMP runtime ? Thanks.

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• License for library developed with commercial program

  - by Overv

  I'm developing a commercial application that largely depends on the functionality of a library that will be developed with it. I'd like to open-source this library, because it offers functionality that is not found elsewhere and can be useful in other applications. However, I will also use it in my own commercial application. I don't want to publish the source of the main application, but it is definitely not a derived work (think of calculator app using GPL licensed library to calculate sine). And if someone else commercially uses the library, I want to require them to publish any changes made. Is the GPL license suitable for this or is LGPL perhaps what I need?

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• System.Interactive: Difference between Memoize() and MemoizeAll()?

  - by Joel Mueller

  In System.Interactive.dll (v1.0.2521.0) from Reactive Extensions, EnumerableEx has both a Memoize method and a MemoizeAll method. The API documentation is identical for both of them: Creates an enumerable that enumerates the original enumerable only once and caches its results. However, these methods are clearly not identical. If I use Memoize, my enumerable has values the first time I enumerate it, and seems to be empty the second time. If I use MemoizeAll then I get the behavior I would expect from the description of either method - I can enumerate the result as many times as I want and get the same results each time, but the source is only enumerated once. Can anyone tell me what the intended difference between these methods is? What is the use-case for Memoize? It seems like a fairly useless method with really confusing documentation.

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• How to use Device Emulator to debug my WinCE application

  - by ame

  I am working with an MFC application built on a WinCE platform in Visual Studio. I need to debug this application and I cannot do it using KITL and the hardware. I tried to use Device Emulator for this: I started a new Platform Builder Project (PDA Device, enterprise webpad). I built it after ensureing that KITL was enabled and so was kernel debugger. Once built, i set the target connectivity options as ce device, download and transport set to Device Emulator and Debugger is KdStub. Once I hit Attach to Device, the doload to target window pops up and then the RelDir window also does. However nothing happens after this and in the output window it says: PB Debugger The Kernel Debugger is waiting to connect with target. Please guide me on what I need to do to debug my application. Thankyou!

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• Subversion BI experience - not a very good one, but working now

  - by Kevin Shyr

  Suffice to say there is now a document in place and I'm the drill sergeant, harassing people to do proper check in, and throw out those who don't.Some people suggest that in a SSIS project, it doesn't really matter if developers don't have the latest version of the project since package check in put the package in the repository, which we can pull out later.  I beg to differ because:When people don't see the package, they might start creating one because their user story require the use of the table.  So they will proceed to create a package and override whatever might already be in the repository.I didn't really see anywhere in the repository to say that which packages were for "deletion".  So I ended up restoring them all, and send the list out to developers.  Then we get into the area where we are relying on people's memory.I'd love to hear other people's experience using Subversion to manage a BI project.

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• enterprise libaray confiuration 4.0

  - by prince23

  hi, i am using enterprise libaray confiuration 4.0. and here i have set the file size as rollSizeKB="20" but once my file size reaches 9kb. a new file is created. what is te issue. why is it creating new file once ut reaches 9KB. <add fileName="c:\Exception.log" footer="----------------------------------------" formatter="Text Formatter" header="----------------------------------------" rollFileExistsBehavior="Increment" rollInterval="None" rollSizeKB="20" timeStampPattern="yyyy-MM-dd" listenerDataType="Microsoft.Practices.EnterpriseLibrary.Logging.Configuration.RollingFlatFileTraceListenerData, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" traceOutputOptions="Timestamp" filter="All" type="Microsoft.Practices.EnterpriseLibrary.Logging.TraceListeners.RollingFlatFileTraceListener, Microsoft.Practices.EnterpriseLibrary.Logging, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" name="Exception Policy" /> any help would be great thank you

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• Part-time work as a beginner programmer [on hold]

  - by Valentas

  I wrote to one company near my university (starting in September) and they responded that they will probably hire me from the work I have already done (some projects and Euler problems solving). It's for 15 hours/week or so in order to not fall behind uni work. They require Python, SQL, XML and a good idea about how the Web works. The job role involves acquiring data from the Web and supplying it as search results for flight seekers (people). I am eager to learn but still, what can I do to become prepared for this? I ask because I tend to gravitate from one technology to the other, trying out things but never mastering it properly. What Web technologies are involved in such a job role? I have two months and want to learn as much as possible because there is much info but I have no idea where to start.

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• How to get rid of crawling errors due to the URL Encoded Slashes (%2F) problem in Apache

  - by user14198

  The Google web crawler has indexed a whole set of URLs with encoded slashes (%2F) for our site. I assume it has picked up the pages from our XML sitemap file. The problem is that the live pages will actually result in a failure because of the Url Encoded Slashes Problem in Apache. Some solutions are mentioned here We are implementing a 301 redirect scheme for all the error pages. This should make the Google bot delete the pages from the crawling errors (no more crashing pages). Does implementing the 301s require the pages to be "live"? In that case we may be forced to implement solution 1 in the article. The problem is that solution 1 will pose a security vulnerability..

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• How to support tableless columns with WYSIWYG editor?

  - by Andy

  On the front page of a site I'm working on there's a small slideshow. It's not for pictures in particular, any content can go in, and I'm currently setting up the editing interface for the client. I'd like to be able to have one/two/more columns in the editable area, and ideally that would be via CSS - does anyone know of a WYSIWYG editor that supports this? I'm using Drupal (would prefer not to involve Panels as it would require a bit of work to make it a streamlined workflow for content entry) in case that matters to anyone. To start the ball rolling, one way would be to use templates. I know CKEditor supports templates, and it looks like TinyMCE might have something similar. I don't know how well these work with tableless columns (the CKEditor homepage demo uses tables to achieve its two column effect). Holding out for a cool solution!

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• Define outgoing ip address when using ssh

  - by Mark

  I have an ubuntu server machine (12.04) with 4 IP addresses for different websites that require unique ssl certificates. I sometimes ssh out from this box and the box I am going to I have to tell it what IP address I will be coming from. How do I specify which of the 4 ip addresses I want to use as my outgoing IP address? If i do an ifconfig it appears that I am going out as the last ipaddress. I guess you would want to specify either the address or the interface.... Thanks in advance! -Mark

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• Sharing ideas without risk of leaking

  - by eversor

  As freelancers, we meet somewhere and chat about a new idea for a project, brainstorm etc. Up to this point, we have taken notes of the ideas, but we would like to be able to share more efficiently the ideas with each other. However, I fear that if I use some online product (such as Google Docs) these ideas could be seen by people outside the team (employees of the company of the online product, other users...). I am not sure if I am being a little Paranoid parrot... One solution that we have considered is to install a Subversion with just one ideas.txt. But that would require a server in one of our houses, which is a little unconfortable. So how do you share your ideas for a new project with your team without risking the ideas to be stolen?

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• What are my tool options to prototype a 2D multiplayer game?

  - by Asher Einhorn

  I'm looking for the best tool to allow me to quickly put together a 2D game that relies largely on networking. It's extremely likely that this game will require a server side program to constantly run. I have little experience with these things and since it's a prototype i'd like the easiest options for achieving this. I am looking to make this game for the web and mobile devices, although at present I only have access to ios hardware, (no android etc). I just want to get the bare bones of this set up so I can test it from the earliest opportunity to see if it's fun.

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• Do search engines rank internal redirects negatively?

  - by siverd

  A client is in the late stages (code complete) of a website redesign and unfortunately hasn't implemented 301 redirects to point high traffic pages to the new URL's. As I understand it our only option at this point is to create redirects within the CMS. Our CMS allows us to do this: www.mysite.com/category/current-page.html will redirect to www.mysite.com/new-category-name/new-page.html The site now uses custom logic on our 404 page to check this list of redirects and if one exists forwards the user to the new-page.html I understand that using 301 redirects would be the correct way to maintain our page rank but I think that would require a code change which isn't possible. Question How will search engines respond to this? Will they wait until the redirect happens and allow us to keep our page rank (authority, trust, etc) or will they see the 404 page and down-rank us? Worst case...will they make our new-page.html start from a rank of "0"? Thanks for your help.

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• Looking for bug tracking software

  - by Shelton

  I'm looking for a bug/issue tracking system that can: Integrate with lots of other services. Basecamp, Beanstalk, etc. Integrate popular CMSs, such as WordPress, so the client can enter a ticket from the system that is familiar to them and not have one more login to worry about. Generate reports for my own purposes. Bonus if there's an iPhone app. Doesn't require additional development on my end (I have plenty of money and no time). I've already looked into Lighthouse and ZenDesk -- both are solid offerings -- but don't see what I need out of the box. I'd have to build CMS plug-ins. And I've looked through WP plug-ins for bug tracking software, but nothing I've found integrates with these products. Anyone know of something that meets these requirements without additional development, or am I stuck putting my business on hold to get this piece in place myself?

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• PPC Affiliate networks for web-applications [on hold]

  - by machete

  I want to run a browser-based social media (Twitter, Instagram,...) account management tool (justunfollow.com) which monetizes through ads. But many affiliate networks like Google AdSense or media.net require your website to have "high quality content". AdSense explicitly states: "Google ads, search boxes or search results may not be: * Integrated into a software application (does not apply to AdMob) of any kind, including toolbars. * Placed on any non-content-based page. (Does not apply to AdSense for search, mobile AdSense for search, or AdMob.)" Are there serious & trustworthy affiliate networks which allow ads to be published on a web application?

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• How to give parallax backgrounds more depth

  - by user28015

  I have 3 tiled images of some sort of galaxy/space in the background of a 2D Game: The first one has an alpha of 100%, the second an alpha of 80% and the last one has an alpha of 60%. I scroll the the one in the background slower than the other ones of course. classic parallax. In the foreground I have some particles flying towards the player to simulate some dust / stars flying by. (I know that stars don't fly by, but I think we all have seen this in a lot of games). But I can't quite achieve the depth effect I am looking for. I want it to look "deeper". I did read something about using blending modes for the backgrounds, but that would require to render them as objects right? So the question is: What is a good technique to do a scrolling parallax background in GameMaker?

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• When should code favour optimization over readability and ease-of-use?

  - by jmlane

  I am in the process of designing a small library, where one of my design goals is that the API should be as close to the domain language as possible. While working on the design, I've noticed that there are some cases in the code where a more intuitive, readable attribute/method call requires some functionally unnecessary encapsulation. Since the final product will not necessarily require high performance, I am unconcerned about making the decision to favour ease-of-use in my current project over the most efficient implementation of the code in question. I know not to assume readability and ease-of-use are paramount in all expected use-cases, such as when performance is required. I would like to know if there are more general reasons that argue for a design preferring more efficient implementations—even if only marginally so?

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• Hotel Reservation Request Booking Paypal PHP

  - by Robert

  I'm making a website for a small hotel in php. The hotel owners want a reservation system that uses paypal. They want people to see a calendar and choose a date to make a reservation. If the day has vacancy, they want the user to request booking a room. This would then require the hotel owner to accept the purchase. I have not worked on a project that has this "request to purchase" method of buying with paypal. Is this possible? Does anyone know of an open php system that handles this? THANKS :)

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• Wordpress : Automatically transfer media files to Amazon S3

  - by Ron Ranieri

  I've been using VPS to host 7 Wordpress websites, most of them require big storage but very little RAM and traffic. So I'm thinking of moving the static files(uploads folder) content to Amazon S3 and I'm looking for the most viable solution to this. I want every website to have their own bucket and newly uploaded media files automatically uploaded to Amazon S3 without using plugin. I'm ok with cron job, for example the files were uploaded first to my server, then transferred to S3 and deleted from my server every 24 hour. Or is there any way for me to change the default upload directory to my S3 bucket without sacrificing any Wordpress functionality(resize/title etc)? What do you think the most efficient way to do this? Currently I'm looking at this plus cron job but I would like to know better option if it exist.

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• Scuttlebutt Reconciliation from "Efficient Reconciliation and Flow Control for Anti-Entropy Protocols"

  - by Maus

  This question might be more suited to math.stackexchange.com, but here goes: Their Version Reconciliation takes two parts-- first the exchange of digests, and then an exchange of updates. I'll first paraphrase the paper's description of each step. To exchange digests, two peers send one another a set of pairs-- (peer, max_version) for each peer in the network, and then each one responds with a set of deltas. The deltas look like: (peer, key, value, version), for all tuples for which peer's state maps the key to the given value and version, and the version number is greater than the maximum version number peer has seen. This seems to require that each node remember the state of each other node, and the highest version number and ID each node has seen. Question Why must we iterate through all peers to exchange information between p and q?

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• How to route KVM virtual machine audio to Ubuntu 11.10 host using virt-manager?

  - by iGadget

  I've been using KVM in combination with Virt-Manager and Remmina at a fair success up until now. The issue I need to solve now is to get audio from a virtualized Windows XP and make it audible on the Ubuntu 11.10 host. Remmina / RDP works for 'simple' audio (system sounds and such), but when the source gets trickier (e.g. Flash audio), Remmina / RDP messes up. So I figured I'd just connect to the machine directly using Virt-Manager. Unfortunately, it seems that even though I have successfully configured the AC97 audio device on WinXP, it's unable to get it's output to the Ubuntu host. This is probably because Virt-Manager uses VNC (and AFAIK, VNC doesn't transport audio). Does anyone know if there is a solution to fix this? I've heard of Spice, but the installation required so much voodoo last time I checked, I figured I'd let that solution boil to maturity a little longer ;) But perhaps there are other options I haven't thought of yet (which don't require switching to VirtualBox / VMware)...

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• NHibernate Pitfalls: Private Setter on Id Property

  - by Ricardo Peres

  Having a private setter on an entity’s id property may seem tempting: in most cases, unless you are using id generators assigned or foreign, you never have to set its value directly. However, keep this in mind: If your entity is lazy and you want to prevent people from setting its value, make the setter protected instead of private, because it will need to be accessed from subclasses of your entity (generated by NHibernate); If you use stateless sessions, you can perform some operations which, on regular sessions, require you to load an entity, without doing so, for example: 1: using (IStatelessSession session = factory.OpenStatelessSession()) 2: { 3: //delete without first loading 4: session.Delete(new Customer { Id = 1 }); 5:  6: //insert without first loading 7: session.Insert(new Order { Customer = new Customer { Id = 1 }, Product = new Product { Id = 1 } }); 8:  9: //update without first loading 10: session.Update(new Order{ Id = 1, Product = new Product{ Id = 2 }}) 11: }

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• Speaking at PASS 2012 Summit in Seattle #sqlpass

  - by Marco Russo (SQLBI)

  I will deliver two sessions at the next PASS Summit 2012: one is title Inside DAX Query Plans and the other is Near Real-Time Analytics with xVelocity (without DirectQuery).These will be two sessions that require a lot of preparation and even if I have already much to say, I still have a long work to do this summer in order to go deeper in several details that I want to investigate for completing these sessions.I already look forward to come back in Seattle!In the meantime, you have to study SSAS Tabular and if you want to get a real jumpstart why not attending one of the next SSAS Tabular Workshop Online? We are working on more dates for this fall, but there are a few dates already scheduled.And, last but not least, the early Rough Cuts edition of our upcoming SSAS Tabular book is finally available here (really near to the final print)!

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