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  • How can I detect and delete all lost configuration folders?

    - by Takkat
    Over the time there is an increasing number of hidden .configuration folders in my home folder. Many of these come from applications I only installed for testing or from applications that I don't use any more. I would not mind really but these folders do clutter my home, and worse than that sum up to as much as 80 GBytes by now. As there are also applications I never heard of (at least I can't remember I had installed them) I hesitate to delete them. Is there a way to find out which folders came from purged applications? May there even be a way to auto-remove a configuration folder when purging (not removing) the application that created it?

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  • Is "watermarking" code with random trailing whitespace a good way to detect plagiarism?

    - by paperjam
    Consider this: int f(int x) { return 2 * x * x; } and this int squareAndDouble(int y) { return 2*y*y; } If you found these in independent bodies of code, you might give the two programmers the benefit of the doubt and assume they came up with more-or-less the same function independently. But look at the whitespace at the end of each line of code. Same pattern in both. Surely evidence of copying. On a larger piece of code, correlation of random whitespace at line ends would be irrefutable evidence of a shared origin. Now aside from the obvious weaknesses: e.g. visible or obvious in some editors, easily removed, I was wondering if it was worth deploying something like this in my open source project. My industry has a history of companies ripping off open source projects.

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  • How do I make my hosting detect _escaped_fragment_ and fetch the corresponding HTML? [on hold]

    - by Eric
    I have an AJAX site and I'm using shebangs (#!) in my urls with the intention of then providing the correct HTML versions when google bots replace the #! with _escaped_fragment_. How do I go about routing/proxying/redirecting the url with _escaped_fragment_ to the corresponding html pages? I can't find documentation on this part of the process specifically, and my first thought was that I should be using a 301 or 302 redirect, but I was told that wasn't the case, albeit not given any more info.

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  • Can web applications running on IIS7 Windows Server 2008 R2 be forced to immediately detect changes to hosts file?

    - by Brenda Bell
    We have several web applications running on several load-balanced servers. We want to have our web applications communicate with each other without first traversing outside the load balancer. For example: http://appA.example.com is running on 192.0.2.1 and 192.0.2.2 http://appB.example.com is also running on 192.0.2.1 and 192.0.2.2 The load balancer's public IP address is 198.51.100.3 By default, when appA on 192.0.2.1 makes a call to a WCF service hosted in appB, the HTTP request is routed to 192.51.100.3; this establishes a new session and the load balancer will direct the call to either of the two servers We want the call to be routed to the instance of appB running on the same server so we add 192.0.2.1 appB.example.com to the hosts file on 192.0.2.1. This eventually works, but we either have to wait for the app pool to naturally recycle or do a manual reset before appA sees the new address. Is there any way to have the change automatically detected without having to recycle the app pool?

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  • Grub2 won't detect Ubuntu 11.10 OS after reinstalling Win XP hal.dll.

    - by yoopian
    Hi I'm an Ubuntu newbie here. I've installed ubuntu 11.10 to dual boot on a single HDD. I did a manual partition and basically forgot all the on what sda my /boot partition is. My installation worked out just fine and I tried to install updates with it. After a while I when I wanted to boot to windows it showed that I was missing a "hal.dll" file. I've fixed this problem using the windows resource CD but then after booting up my PC it went straight to Windows XP. I've tried to manually reinstall Grub2 using a Live CD/USB and it worked but I think I have installed in on a different "sda#" (sda5 to be exact) because even though Grub2 loads when I boot my PC, only windows XP shows up as my OS and Ubuntu 11.10 is missing. Now, I've tried installing boot-repair to solve my problems using Live CD/USB. Boot-repair tells me that boot configuration was successful but then a basic grub interface shows up (the black one with a command line grub showing up. Now I can't even boot to Windows XP. Any help would be really appreciated. BTW here's the notes from boot repair that I was asked to save: http://paste.ubuntu.com/890228/ As you can see there are boot files on sda5 and sda7. I think that's the core problem that I have right now. Thanks in advance!

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  • Why doesn't file detect the mime-type of mp3 properly?

    - by Grumbel
    Something odd I recently encountered, running file --mime-type on a collection of MP3 gets the mime-time wrong a third of the time: $ for i in */*.mp3; do cat "$i"| file --mime-type -; done | sort | uniq -c 140 /dev/stdin: application/octet-stream 309 /dev/stdin: audio/mpeg There doesn't seem to be any obvious reason, as even MP3s from the same source, will sometimes fail and sometimes not. Bug, feature or anything obvious I am missing here?

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  • How to Detect and Fix Table Corruption in Oracle?

    Oracle is an RDBMS (Relational Database Management System), developed and marketed by Oracle Corporation. It has a major presence in database computing. It stores all your valuable data in the DBF fi... [Author: Mark Willium - Computers and Internet - May 13, 2010]

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  • Unity AddExplosionForce not doing anything

    - by Zero
    Recently I've started learning Unity3D. I'm working on a game as an exercise in which you control a space ship and have to dodge asteroids. If you feel like it's getting a bit too much you can hit the space bar, emitting a blast in all directions that repulses nearby asteroids. To create this blast I have the following code: public class PlayerBlastScript : MonoBehaviour { public ParticleSystem BlastEffect; // Update is called once per frame void Update () { if (Input.GetKeyUp(KeyCode.Space)) { Fire(); } } public void Fire() { ParticleEmitter effect = (ParticleEmitter) Instantiate (BlastEffect, transform.position, Quaternion.identity); effect.Emit(); Vector3 explosionPos = transform.position; Collider[] colliders = Physics.OverlapSphere(explosionPos, 25.0f); foreach(Collider hit in colliders) { if (!hit) { continue; } if (hit.rigidbody) { hit.rigidbody.AddExplosionForce(5000.0f, explosionPos, 100.0f); } } } } Even though the blast effect appears, the asteroids are not affected at all. The asteroids are all rigid bodies so what's the problem?

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  • How to detect Javascript pop-up notifications in WatiN?

    - by Ian P
    I have a, what seems to be, rather common scenario I'm trying to work through. I have a site that accepts input through two different text fields. If the input is malformed or invalid, I receive a Javascript pop-up notification. I will not always receive one, but I should in the event of (like I said earlier) malformed data, or when a search result couldn't be found. How can I detect this in WatiN? A quick Google search produced results that show how to click through them, but I'm curious as to whether or not I can detect when I get one? In case anyone is wondering, I'm using WatiN to do some screen scraping for me, rather than integration testing :) Thanks in advance! Ian

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  • Detect Browser Refresh vs. Form Submit in ASP.Net MVC 2

    - by Eric J.
    I have an ASP.Net questionnaire application that resubmits data to the same page, showing a different question each time. There are BACK and NEXT buttons to navigate between questions. I would like to detect when the form is submitted due to a browser refresh vs. one of the buttons being pressed. I came across a WebForms approach but don't know how to apply those principals in an MVC 2 application since page events aren't available (as far as I know... I'm pretty new to Microsoft's MVC model). How would one apply that principle to MVC 2? Is there a better way to detect refresh?

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  • How can I detect if the browser has encountered a JavaScript error ... in JavaScript?

    - by RichH
    For automated testing reasons I want to detect if the browser has encountered JavaScript errors for a page. The type of things that would cause the red numbers in the bottom right in Firebug or yellow warning icon in the Internet Explorer status bar. These JS errors could come from any one of a large numbers of scripts. How in JavaScript can I detect these browser errors? Cross browser solutions prefered, but hey, I'll take anything! As a bonus it would also be great to know the script that caused the error.

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  • What's the best way to detect web applications attacks ?

    - by paulgreg
    What is the best way to survey and detect bad users behavior or attacks like deny of services or exploits on my web app ? I know server's statistics (like Awstats) are very useful for that kind of purpose, specially to see 3XX, 4XX and 5XX errors (here's an Awstats example page) which are often bots or bad intentioned users that try well-known bad or malformed URLs. Is there others (and betters) ways to analyze and detect that kind of attack tentative ? Note : I'm speaking about URL based attacks, not attacks on server's component (like database or TCP/IP).

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  • How to detect generation loss of a transcoded audio.

    - by The Rook
    Lets say you have a 96 kbit mp3 and you Transcode the file into a 320 kbit mp3. How could you programmatically detect the original bit rate or quality? Generation loss is created because each time a lossy algorithm is applied new information will be deemed "unnecessary" and is discarded. How could an algorithm use this property to detect the transcoding of audio. 128 kbps LAME mp3 transcoded to 320 kbps LAME mp3 (I Feel You, Depeche Mode) 10.8 MB. This image was taken from the bottom of this site. The 2 tracks above look nearly identical, but the difference is enough to support this argument.

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  • How to detect open database connection with Hibernate / JPA?

    - by John K
    I am learning JPA w/Hibernate using a Java SE 6 project. I'd simply like to be able to detect if the connection between Hibernate and my database (MS SQL Server) is open. For example, I'd like to be able to detect this, log it, and try reconnecting again in 60 seconds. This is what I thought would work but isOpen() doesn't appear to be what I want (always is true): EntityManagerFactory emf = Persistence.createEntityManagerFactory("rcc", props); if (emf != null && emf.isOpen()) { EntityManager em = emf.createEntityManager(); if (em == null || !emf.isOpen()) // error connecting to database else ... This seems to me to be a simple problem, but I cannot find an answer!

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  • What is proper way to detect all available serial ports on Windows?

    - by Sorin Sbarnea
    There are several ways to list serial ports under Windows but I'm not sure what is the proper way: the way that does detect all serial ports that are available. One good code example is http://www.naughter.com/enumser.html - where there at 9 (nine!) ways of enumerating serial devices. The question is: what is the optimal way of doing it. Requirements: * to not open ports in order to check if they are available. * to be able to detect ports with different names than COMx.

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  • How can I detect whether an image is a PNG or APNG format?

    - by perlit
    APNG is backwards compatible with PNG. I opened up an apng and png file in a hex editor and the first few bytes look identical. So if a user uploads either of these formats, how do I detect what the format really is? I've seen this done on some sites that block apng. I'm guessing the ImageMagick library makes this easy, but what if I were to do the detect without the use of an image processing library (for learning purposes)? Can I look for specific bytes that tell me if the file is apng? Solutions in any language is welcome.

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  • how do I detect OS X in my .vimrc file, so certain configurations will only apply to OS X?

    - by Brandon
    I use my .vimrc file on my laptop (OS X) and several servers (Solaris & Linux), and could hypothetically someday use it on a Windows box. I know how to detect unix generally, and windows, but how do I detect OS X? (And for that matter, is there a way to distinguish between Linux and Solaris, etc. And is there a list somewhere of all the strings that 'has' can take? My Google-fu turned up nothing.) For instance, I'd use something like this: if has("mac") " open a file in TextMate from vi: " nmap mate :w<CR>:!mate %<CR> elseif has("unix") " do stuff under linux and " elseif has("win32") " do stuff under windows " endif But clearly "mac" is not the right string, nor are any of the others I tried.

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  • Are there any C++ tools that detect misuse of static_cast, dynamic_cast, and reinterpret_cast?

    - by chrisp451
    The answers to the following question describe the recommended usage of static_cast, dynamic_cast, and reinterpret_cast in C++: http://stackoverflow.com/questions/332030/when-should-static-cast-dynamic-cast-and-reinterpret-cast-be-used Do you know of any tools that can be used to detect misuse of these kinds of cast? Would a static analysis tool like PC-Lint or Coverity Static Analysis do this? The particular case that prompted this question was the inappropriate use of static_cast to downcast a pointer, which the compiler does not warn about. I'd like to detect this case using a tool, and not assume that developers will never make this mistake.

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