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• GNU General Public License (v2): can a company use the licensed software for free?

  - by EOL

  When a library is released under the GPL v2, can a company use it internally for free? If they develop software based on it, do they have to release it under the GPL, even if they don't distribute it? Can they make money by using (not distributing) internally developed software that links to the GPL'ed library, without any compensation for the author? I am looking for a software license that only allows non-commercial uses (copy, modify, link to); the resulting derived programs must also be free for non-commercial uses. Is there any software license that does this for non-commercial uses, and prevents any commercial use (including using the software in order to make money)? It looks like the Creative Commons licenses are flexible enough to do something close to that, but I've read against using them for software. What do you think?

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• PXE boot windows versions

  - by iJonathan

  I will make a PXE-server on Ubuntu for the installations of Windows XP and 7. When a computer starts from the network, then it should be display a menu with, for example "installation of XP" and the next item "installation of 7". When I select one of these items, the installation must start. I won't use an image, wds or FOG because the computers aren't the same and there a different departments in the company with a different configuration, programs etc. Neither Windows Server, only an Ubuntu PXE-server How I should start with making that? Thanks.

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• Common files in output directories in a C# program

  - by Net Citizen

  My VS2008 solution has the following setup. Program1 Program2 Common.dll (used and referenced by both Program1 and Program2) In debug mode I like to set my output directory to Program Files\Productname, because some code will get the exe path for various reasons. My problem is that Program1 when compiled, will give an error that it could not copy Common.dll if Program2 is started. And vise versa. The annoyance here is that I don't even make changes to Common.dll that often, but 100% of the time it will try to copy it, not only when there are changes. I end up having to close all programs, and then build and then start them. So my question is, how can I only have VS2008 copy the Common.dll if there are changes inside the Common.dll project?

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• Is It possible to change dynamically delay on a Scheduled Poller in Camel via JMX?

  - by sebbrousse

  I would like to set/change the delay of a File consumer at runtime through JMX. I am able to change the value of the property but it doesn't seem to be taken into account until I restart the consumer. Example with the camel-archetype-java and its basic file example: Run It Change the delay of the File Consumer by calling the setDelay Operation with the JConsole Delay property of the Consumer is changed but logs show it continues to poll at 500ms by default Stop/Start the consumer New value of delay is used by the consumer Do I need anothers steps or active any configuration to make it work at runtime?

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• How to stop and remove anythingSlider

  - by d_rail

  I have several sliders on the same page and but don't show all at once. I would like to be able to stop a slider and remove the animation by an event function. As it works right now, if I hide a slider, it still runs in the background, the dom shows the images rotating and the url parameters change. I've seen this question, but it did not work for me: How to stop AnythingSlider when Flowplayer clicked This is also somewhat similar, but I want to remove the slider instead of restarting: AnythingSlider: how to restart slideshow function stopAnythingSlider() { // I receive `TypeError: $(".anythingSlider").data("AnythingSlider") is undefined` // $('.anythingSlider').data('AnythingSlider').startStop(false); }

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• Sometimes when visiting a php page, the browser asks me to download the .php file with nothing in it

  - by John

  I've noticed an unusual problem with some of my php programs. Sometimes when visiting a page like profile.edit.php, the browser throws a dialogue box asking to download profile.edit.php page. When I download it, there's nothing in the file. profile.edit.php is supposed to be a web form that edits user information. I've noticed this on some of my other php pages as well. I look in my apache error logs, but don't see any errors. How do i figure out why this is happening?

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• Preventing the "[YourProgramName] has stopped working" dialog on unhandled exceptions.

  - by Serapth

  I have a WinForm application, with some dependencies on an external library that can on occasion cause an exception outside of the running threads context. As it stands now, this is completely OK behavior ( well, except of course the exception ) and we wired up AppDomain.CurrentDomain.UnhandledException to simply restart the program. The only problem is, the [Your Program] has stopped working like the one below, appears: Is there a way to prevent this dialog from appearing at all, be it in the AppDomain unhandled exception handler or in a config setting, as no end users are going to be reading it and it just holds up resources until it is clicked.

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• The case of the mysterious MySQL caching across restarts

  - by shanusmagnus

  I found a very slow MySQL query in my web app. The weird thing is that the query is only slow the first time it's executed, despite the fact that the query_cache is set to its default (query_cache_size 0) like so: mysql> show variables like 'query%'; +------------------------------+---------+ | Variable_name | Value | +------------------------------+---------+ | query_alloc_block_size | 8192 | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 0 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | +------------------------------+---------+ The even weirder thing is that this speedup persists even after the MySQL server has been stopped and restarted (I'm using OSX, and perform this restart using the system preferences pane.) The only way I can re-create the poor performance of the initial query is by rebooting the system. So my question is: how is this happening? Obviously some sort of caching at work, but where? And how does it persist across database restarts? This query is mediated through our web app, which comes via PHP/Apache, but there are no extra bells and whistles, and the curious caching also persists across Apache restarts. Help?

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• Are Domain Specific Languages (DSL) bad for the Common Programmer?

  - by iestyn

  I have lately been delving into F# and the new DSL stuff as in the Microsoft SQL Server Modelling CTP, and have some concerns. Will this new idea that will come about be bad for skilled programmers? Is code going to be dumbed down? I know I sound like a luddite, but this does worry me, after spending years of time practising in my craft, and now might be scuttled by genius from within. I am afraid, very afraid. Will I be now trapped in a job that only programs against a DSL and therefore every job that I work on, I have to learn a whole new DSL based on top of a Framework (.net Java), that I will only be allowed to touch certain parts of. I don't think the world is ready for DSL, but the sales pitch is deafening!

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• How to limit memory of a OS X program? ulimit -v neither -m are working

  - by hectorpal

  My programs run out of memory like half of the time I run them. Under Linux I can set a hard limit to the available memory using ulimit -v mem-in-kbytes. Actually, I use ulimit -S -v mem-in-kbytes, so I get a proper memory allocation problem in the program and I can abort. But... ulimit is not working in OSX 10.6. I've tried with -s and -m options, and they are not working. In 2008 there was some discussion about the same issue in MacRumors, but nobody proposed a good alternative. The should be a way a program can learn it's spending too much memory, or setting a limit through the OS.

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• Broken php/localhost/something

  - by ghego1

  I was trying to install the mcrypt libraries following this tutorial (http://www.glenscott.co.uk/blog/2011/08/29/install-mcrypt-php-extension-on-mac-os-x-lion/), but something must have gone wrong and now when I load a php page on my localhost I see this: query="SELECT DISTINCT ".$field." as a,".$field2." as b FROM ".$tab." ".$where. " Group by ".$field." order By ".$orderBy; return $this->query; } And all the remaining code of the php page that should get loaded. I've retrieved the previous versions of the private/etc folder and usr/lib/php folder with time machine but it didn't help. And now if I execute sudo pachectl restart it gives me this error: sudo: no valid sudoers sources found, quitting (while before it worked. PS I'm on a mac with Mountain Lion

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• [Java] Listening for TCP and UDP requests on the same port

  - by user339328

  I am writing a Client/Server set of programs Depending on the operation requested by the client, I use make TCP or UDP request. Implementing the client side is straight-forward, since I can easily open connection with any protocol and send the request to the server-side. On the servers-side, on the other hand, I would like to listen both for UDP and TCP connections on the same port. Moreover, I like the the server to open new thread for each connection request. I have adopted the approach explained in: link text I have extended this code sample by creating new threads for each TCP/UDP request. This works correctly if I use TCP only, but it fails when I attempt to make UDP bindings. Please give me any suggestion how can I correct this. tnx

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• Where and why JVM checks that the return type of entry method main(String args[]) is void and not an

  - by akjain

  I will try to answer both, please correct me if I am wrong: Where: If a static method is being called using Classname.method() or using reflection then it doesn’t matter even if you change the return type of the calling method, the same method will still be called. So JVM probably checks this in one of the native methods of jvm.cpp methodHandle m (THREAD, init_klass-find_method(vmSymbols::object_initializer_name(), vmSymbols::void_method_signature())); if (m.is_null()) { ------ THROW_MSG_0 ……….. Why: Although it’s of useless to return a value from main, as java does not do anything with it but if we try to change the return type of main to int for example, JVM throws public static int main(String[] args) { return 1; } java.lang.NoSuchMethodError: main Exception in thread "main" So may be Java mandates the use of same signature for entry method main() to maintain a symmetry in all Java programs written.

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• Programmatically set browser cookie (Firefox)

  - by Andrew

  I know from this question that Firefox 3.0 and up stores its cookies in an SQLite database. My question is: can you access this database from other desktop programs in such a way that you could add a cookie? I realize this has security implications. However, I do not want to read them at all. I want to be able to set one cookie if possible. I don't even want to overwrite a cookie. I just want to add it if it isn't there already. This is sort of a personal project I'm working on for fun. This question is mostly language agnostic. I would prefer a solution in C#, but proof of concept in any language will suffice. Extra credit: It would be cool to set the same cookie in Internet Explorer, too

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• Drupal vs Some Other CMS

  - by Vecta

  I'm going to be moving my website to a CMS in the coming months I'd I need some help on choosing an appropriate CMS. Many of the websites I've seen tend to say "use Drupal, hands down". However, my website truly doesn't have a need for commenting or community features. Its pages will need to be modified occasionally, but not extensively. My website will also consist of many programs, each with their own sub-pages and menus. There are probably 25 people that will need access to the content on my website and will need the ability to update it. I do like the idea of being able to tag and categorize the content, and the modular aspect of Drupal but is it really right for my website? If not, which CMS may fit my needs better?

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• Deny access to a PHP file (Nginx)

  - by Desmond Hume

  I want Nginx to deny access to a specific PHP file, let's call it donotexposeme.php, but it doesn't seem to work, the PHP script is run as usual. Here is what I have in the config file: location / { root /var/www/public_html; index index.php; } location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /var/www/public_html$fastcgi_script_name; include fastcgi_params; } location /donotexposeme.php { deny all; } Of course, I do sudo service nginx reload (or restart) each time I edit the config.

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• Any ORMs that easily support access to raw table schema?

  - by fizil

  I work with a ASP.NET UI framework that pulls fields for a particular screen off a database. These fields can be associated with particular data fields in another database for binding. The idea with this setup is that if a client needs a new column on a table, they can easily add it, and create a UI field that binds to it without any sort of application restart or recompile. The problem I've always had with this is that it has meant I'm always having to work with untyped datasets in my code. Are there any ORM libraries for .NET out there that could easily accommodate the requirement of being able to access arbitrary columns in the table schema over and above ones mapped to strongly typed fields?

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• MessageBox not shown when opened processing WM_CLOSE from taskbar thumbnail close button

  - by Katana

  Trying to put up a "Do you want to save"-dialog when trying to close window with close-button in taskbar thumbnail in windows 7(with aero peek active). Using MessageBox() when processing WM_CLOSE does not work. MessageBox won't show until you move mouse cursor outside thumbnail so aero peek is disabled. Lots of applications have this buggy behaviour so it's probably a design flaw in Windows 7, but for some programs it works (Word, Notepad, Visual Studio, ...), so I'm wondering what trick they are using(or what it takes to "exit" aero peek-mode programmatically). The small "Sound Recorder" application that comes with Windows 7 has the same problem (if you have recorded something without saving and try to close it using thumbnail close-button)...

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• Would it be possible for web browsers to automatically update rendering engines?

  - by unknowing

  As a way to prevent the major annoyances of browser segmentation and older versions. This way the code would only need to be done for the latest version of the browser, but users could still have the functionality of the older version and not be forced to do major updates? I am sure there will be some major flaws in this, and I would like you to tell me what they are! -Obviously, people may not want this as often auto-updating is frowned upon, however Chrome does it (or at least, they used to); Without a manual check, Chrome will update itself automatically, Google said. "Google Chrome will automatically checks for updates approximately every five hours. If an update is available, it will be downloaded and applied at the next browser restart," Google said. -there is still the problem of getting users from the really old ones onto the any new browsers that have this functionality -To prevent exploits in terms of updates, maybe they could have a 7 day opt-in period before being pushed out to everyone?

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• Using FILE_FLAG_NO_BUFFERING will return noticeable speed gain?

  - by 9dan

  Recently noticed detail description of FILE_FLAG_NO_BUFFERING flag in MSDN, and read several Google search results about unbuffered I/O in Windows. http://msdn.microsoft.com/en-us/library/aa363858(v=vs.85).aspx I wondering now, is it really important to consider unbuffered option in file I/O programming? Because many programs use plain old C stream I/O or C++ iostream, I didn't gave any attention to FILE_FLAG_NO_BUFFERING flag before. Let's say we are developing photo explorer program like Picasa. If we implement unbuffered I/O, could thumbnail display speed show noticeable difference in ordinary users?

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• Django: IE doesn't load locahost or loads very SLOWLY

  - by reedvoid

  I'm just starting to learn Django, building a project on my computer, running Windows 7 64-bit, Python 2.7, Django 1.3. Basically whatever I write, it loads in Chrome and Firefox instantly. But for IE (version 9), it just stalls there, and does nothing. I can load up "http://127.0.0.1:8000" on IE and leave the computer on for hours and it doesn't load. Sometimes, when I refresh a couple of times or restart IE it'll work. If I change something in the code, again, Chrome and Firefox reflects changes instantly, whereas IE doesn't - if it loads the page at all. What is going on? I'm losing my mind here....

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• Handling orientation changes yourself

  - by synic

  From the documentation regarding the android:configChanges='orientation' attribute of the activity tag in the manifest: Note: Using this attribute should be avoided and used only as a last-resort. Please read Handling Runtime Changes for more information about how to properly handle a restart due to a configuration change. Why does it say this? In the case of threads and networking requests via a service API library, a request could be made with a reference to the original Activity, and then an orientation change could occur, leaving the thread pointing to the old Activity. While this can be fixed, it's tedious and ugly compared to just handling the configuration changes yourself. Why should it be avoided?

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• ColdFusion debugging output in my Ajax

  - by cf_PhillipSenn

  If I turn off "Enable Request Debugging Output", the 3rd option under the Debug Output Settings, then I no longer get debug info in my $.ajax call to a cfc with access="remote". That's good, but I'd like to keep it turned on for all my other programs and turn it off programatically for this one exception. I put <cfsetting showdebugoutput="false"> at the top of my Index.cfm, but that didn't turn off the debug output coming from the cfc. Oh wait. Never mind. I had to put the in the function rather than in Index.cfm.

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• How do (or can I) hack a gem temporarily while looking for a bug?

  - by Tom Andersen

  I have a gem installed in my home directory on a laptop (eg not THE server). I have installed ruby 1.9.1 and also some other gems, notably right_aws - which allows access to s3, etc with ruby. All works, except there is a bug when I do a query on SimpleDB, and the returned list of items includes an item with any two byte utf-8 character in its itemName(). So I look through the sources of the right_aws gem installed on my machine, and I can see some places where I would like to test a fix. If I edit the file, save changes, (needing a password), then restart the server (script/server), it ignores my changes. I am quite new at ruby - do you have to 'compile' or other similar move to get the source code changes made take effect? I can see the edited file is changed by viewing it in terminal, etc.

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• How messengers (IM) works (listening) ?

  - by Panda

  My task is to write a Messenger program for both internal and external staffs, I actually made it. However, I thing this is really not a good approach by using the client software keep "check-mesg" from server. So I think I am just simulating the IM program. I want to make the client app become a listening server, and let user p2p talking without a "mesg-centre" at the main server(unless offline mesg happen). The question is how do I tell the external user ( other client app ) my location while I am behind a router ? Are those other IM programs running on the client machine as a server too? and how do they get through ? Thanks in advance!

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