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• Nginx or Apache for a VPS?

  - by James

  I consider myself to be an inexperienced user/administrator when it comes to running my VPS. I can get by with a few CLI commands, I can set up Webmin and I can set up Yum repos, but beyond the very basic stuff, I'm out of my depth. So far, I'm running Apache. I don't know it particularly well, but I can get by with editing httpd.conf if I'm told what to edit. I've heard good things about Nginx and that it's not as resource-hungry as Apache. I'd like to give it a go, but I can't find any information about its suitability for administrators like me, with little experience of sysadmin or web server config. Webmin now has support for Nginx, so getting it installed and running probably won't be too much of a problem. What I'm wondering is, from a site administrator perspective, is running Nginx as transparent as running Apache? IE, at the moment, I can just throw up Wordpress and Drupal sites without having much to worry about or having to make any config changes to Apache. Would Nginx be as transparent?

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• Try to delete files used by IIS

  - by Cédric Boivin

  I got a service coded in c# whoes deleted somes web site files hosted on iis, before an update. But sometime when i delete the files, they stay there. If I try to delete them manually, via explorer, the file are not deletable, because they are in state "Delete pending". There is the way my service try to delete the file try { // Enlève tout les attributs sur le fichiers afin de s'assurer que le fichier n'est pas en lecture seul File.SetAttributes(file, FileAttributes.Normal); // Supprime le fichier File.Delete(file); } It's there a way to avoid this state ? What can i do to force the delete by c# code? Could i release all process to the file by c# code ? The environnement is IIS 7.5 Windows 2008-r2 .net 4.0 Thanks

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• Screen Resolution stuck at 640x480 after installing Bumblebee

  - by Saurabh Agarwal

  I have a Dell XPS 15z laptop. As you can see here, there are some issues with NVidia drivers. The site recommends installation of Bumblebee (instructions given in the link). I am posting it again for ease: $ sudo add-apt-repository ppa:bumblebee/stable $ sudo apt-get update && sudo apt-get upgrade $ sudo apt-get install bumblebee bumblebee-nvidia $ sudo usermod -a -G bumblebee $USER After restarting the computer however, the screen resolution was stuck at 640x480 and I got the following error message as soon as I logged in: **Could not apply the stored configuration for monitors** none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Trying modes for CRTC 64 CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Prior to the update, the display was absolutely normal and thus there is no doubt about the cause. Albeit, there was no support for graphic drivers. In case it helps, some features of graphics drivers seem to be functional after bumblebee, ie, all features are in order except for the resolution. And if the resolution can't be fixed, please suggest a way to retract the changes so that atleast the prior state may be reachieved. Any help in the matter would be highly appreciated.

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• Is browser fingerprinting a viable technique for identifying anonymous users?

  - by SMrF

  Is browser fingerprinting a sufficient method for uniquely identifying anonymous users? What if you incorporate biometric data like mouse gestures or typing patterns? The other day I ran into the Panopticlick experiment EFF is running on browser fingerprints. Of course I immediately thought of the privacy repercussions and how it could be used for evil. But on the other hand, this could be used for great good and, at the very least, it's a tempting problem to work on. While researching the topic I found a few companies using browser fingerprinting to attack fraud. And after sending out a few emails I can confirm at least one major dating site is using browser fingerprinting as but one mechanism to detect fake accounts. (Note: They have found it's not unique enough to act as an identity when scaling up to millions of users. But, my programmer brain doesn't want to believe them). Here is one company using browser fingerprints for fraud detection and prevention: http://www.bluecava.com/ Here is a pretty comprehensive list of stuff you can use as unique identifiers in a browser: http://browserspy.dk/

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• UPK Basics Hands On Lab at Oracle Open World Latin America

  - by user581320

  Orrcle Open World Latin America 2012 will be in Sao Paulo, Brazil December fourth through the sixth. There's so much to see and learn from at Oracle OpenWorld : keynotes, technical sessions, Oracle and partner demonstrations, hands-on labs, networking events, and more.  I will be presenting a hands-on lab at the show this year, Introduction to Oracle User Productivity Kit - Learn the Basics in the afternoon on Tuesday December 4th.  This nonstop one hour lab covers topics from Getting Started with UPK to the basics of creating an outline, some typical content and concluding with publishing some of the many outputs UPK is capable of.   If you are planning on attending the show, come by the lab and see what UPK is all about.  I’ll be in Sao Paulo all week to fulfill my need to extend California’s summer by another week (trip bonus) and to meet and discuss all things UPK with our customers and partners.  If you’re not registered for the show there is still time. Check out the Oracle Open World Latin America 2012 web site for all the details. I look forward to seeing you in Sao Paulo!  Peter Maravelias Principal Product Strategy Manager, Oracle UPK 

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• How to facilitate code reviews in a small team for embedded software?

  - by Adam Lewis

  Short Question Does a cost-effective tool / workflow exist to facilitate code reviews in a small team? More specifically, a small team that relies on post-commit code reviews. Background Our team currently consists of 3 full time and 1 part time software engineers, with plans on hiring more in the near future. Due to our team size and volume of projects we all must juggle, the pre-commit workflow that major tools (such as Review Board and Code Collaborator) use is not obtainable for us right now. The best we can do at the moment is to perform post-commit reviews before major releases or as time permits. Nearly all of our projects are hosted on RepositoryHosting.com (which I highly recommend) and contain a mixture of SVN and GIT repositories. Current Thoughts Since I cannot find a tool that fits our needs right now, I am turning to TRAC that is built into our repository's site. At the moment we use TRAC to file tickets and track milestones, so to me this seems like a natural fit for code review results as well. The direction I am heading in right now is to use a spread sheet(s) to log all of the bugs and comments. Do some macro magic to get it in a format that I can use TRAC's import ticket method and use TRAC's ticketing system to create the action items / bug reports automatically. The auto ticket generation is darn near a must have, adding in bugs and comments one at a time from a web-gui is really painful. Secondary Question If this workflow makes sense, is there a good / standard template to use as a code review log?

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• What could cause Vista machines to degrade in performance?

  - by gencha

  We have installed several machines running Windows Vista at a client site. These machines run the same set of applications each day and are not operated with by any user. They mainly run a 3D application for digital signage purposes. After a few months I noticed that several machines suffer from really bad stuttering. The performance is unacceptable. At first I figured it was faulty hardware. But after putting a fresh image on them, they run perfectly fine again. These are Core i7 machines with GTX 280 graphics adapters. They should be able to handle the workload without any trouble (and they do, at least for a while). I really have no idea how to track down the source of this issue. Especially since not all of the machines display the same issue.

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• How To Perform Distributed Website Monitoring?

  - by cballou

  I would like to know how sites like the following perform distributed website monitoring (from multiple checkpoints/countries). pingdom.com, site24x7.com, uptrends.com, siteuptime.com, etc, etc. To be exact, what process would occur in checking if a given domain name went down? If the server finds that the site is down, what is the next step? Would it make a REST API request to a separate server to run the same test and report the results? I have a few theories, including: utilizing host(s) from different countries utilizing proxies from different countries I'm looking for the most proper or correct way to handle this, which can include the usage of servers from multiple countries/hosts.

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• Where to find and install ASUS motherboard drivers for Linux

  - by Dan

  This is my second day ever with Linux, and I had one heck of a time getting the nVidia drivers installed and working. Please, keep in mind I am very new and just starting out. I currently have an ASUS P8Z68-V LE motherboard and I'm not sure if the drivers are installed. Where would I go to find that out? I am using Gnome as my UI. If I don't have the drivers installed, where would I go? The ASUS site only gives me options to download for various Windows OS, DOS and "other" (in .ROM format). Which should I take and how should I install? I'm mostly looking for audio drivers. A lot of music I play, either on YouTube or with VLC has a faint crackling in the background on Ubuntu, which gets much worse the higher I turn the volume up. Could this be something other than the drivers? I doubt it's the hardware since the sound seems fine on Windows. I am currently running 12.04.

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• AWS SSL Load Balancer

  - by Jay Francis

  OK, I am looking for some pointers. Basically I have a white-label app/site that will allow users to setup their own domain to use for their customer front-end. We have 2 dedicated servers and a load balancer. The problem is SSL, we were thinking about using AWS ELB to handle the SSL loadbalancing, but cant seem to figure out if it will properly handle it, it seems to be setup to work with EC2 instances, but we are using externally hosted servers via a loadbalancer. A blog post by AWS looks similar to what we need but it only seems to work with EC2 instances. http://aws.typepad.com/aws/2011/08/elastic-load-balancer-ssl-support-options.html Anyone had experience setting ELS SSL load balancers up to work with external servers?

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• How do we keep Active Directory resilient across multiple sites?

  - by Alistair Bell

  I handle much of the IT for a company of around 100 people, spread across about five sites worldwide. We're using Active Directory for authentication, mostly served to Linux (CentOS 5) systems via LDAP. We've been suffering through a spate of events where the IP tunnel between the two major sites goes down and the secondary domain controller at one site can't contact the primary domain controller at the other. It seems that the secondary domain controller starts denying user authentication within minutes of losing connectivity to the primary. How do we make the secondary domain controller more resilient to downtime? Is there a way for it to cache the entire directory and/or at least keep enough information locally to survive a multi-hour disconnection? (We're all in a single organizational unit if that makes any difference.) (The servers here are Windows Server 2003; don't assume that we set this up correctly. I'm a software engineer, not an IT specialist.)

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• Enabling AES 256 GCM on Windows Server 2012 R2

  - by Feanaro

  I'd like to enable the use of the AES 256 GCM encryption instead of the AES 256 CBC. We already have ECC certificates based on ECDSA so that pre-requisite has been fullfilled. The certificate has a SHA-256 signature and uses a 256-bit ECC keyset. The ciphersuite I'd like to use: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384_P384 This is our ciphersuite order: TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384_P384, TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384_P521, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384_P384, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384_P521, TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA_P256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA_P256, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256 Still when I check the website it says we use TLS 1.2 and ECDHE_ECDSA for key exchange AES_256_CBC encryption and SHA1 for message digest. I suspect it uses this suite for some reason: TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA_P256 When I remove that ciphersuite the site has a protocol mismatch and won't load the https anymore. Does anyone know how to enable the ciphersuite? Did I forget to set something in the registry or do I need to do something else to enable that specific suite. Thanks in advance!

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• Admin access when forms authentication on sharepoint

  - by user33760

  Hi everyone, I'm fairly new to Sharepoint, i'm catching up fast (reading + experimenting) but i can't seem to get around this.... I have a web application with its respective site collection and sites, i have anonymous access allowed for all the sites with forms authentication. Everything is working fine but i don't know how to login with the administrator account from the internet. With Windows auth you have the "login" link and you just have to use your admin credentials, how can i do that with forms auth?? Any help will be highly appreciated. Thanks in advance.

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• What is a widely accepted term for a string variable that would probably contain a file path and file name?

  - by Peter Turner

  For functions that need to index files in a directory and rename them FileName0001, FileName0002, etc... I often need to write a function that splits the file name from the file path and rename the file. When I put the file name and file path back together, I don't have a very good name for the variable that contains both of them and I usually just wind up concatenating them every time I want to use them (usually using them as parameters for functions labeled either filename or filepath) so I never really know what I'm doing until I notice a lot of files being written in the same directory as my binaries. Anyway, what do I call a file name and a file path? I don't want to call it File, because that usually means the binary information behind the file. I don't want to call it URI because that usually means I've got some sort of protocol, which I don't. I just want a good way to denote "c:\somedir\somedir\somedir\somefile.txt" so as to deconfuse this mess I've just realized I'm in. Please don't just list your personal preference. I think an excellent answer should "'site its sources". (as in, provide a link to a repository with a good example of the code being used as I described)

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• Google search results are downloaded as a file in Google Chrome

  - by i-g

  I'm behind a proxy at work, and Google Chrome insists on downloading Google search results pages instead of displaying them. Whether I try to search from the address bar, from google.com, or from a third-party site that has a Google search form, what ends up happening is that the search results page ends up as a downloaded file called "search" in my downloads directory. I haven't seen this happen with any other search pages. Yahoo! Search, for example, works fine. Has anyone run into this before and/or has any ideas on how to fix it or what might be causing it? I'd try the Chrome support pages, but they're blocked by the proxy...

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• Can One Get a Solid Programming Foundation Without Going To College/University?

  - by Daniel

  First, I have already searched the site and read all the previous "self-taught vs. college" topics. The majority of the answers defended that going to college was the best choice, for two main reasons: Going to college gives you the paper, which is essential to landing jobs, especially in tough economic times. Going to college gives you a solid programming base, teaching you the principles that will be essential regardless of the language/path you take after. Here comes my question: I am not worried about reason 1 at all, because I already have my own company (I build websites/ do affiliate marketing) and a stable financial situation, so I am pretty sure I won't need to look around for a job. I am worried about reason 2 though. That is, I want to make sure I'll have as solid a programming foundation as anyone else out there, and I am wondering if that is possible with self-learning. Suppose I take my time to study the very basics, like discrete maths, algorithm design, programming logic, computer architecture, Assembly, C programming, databases and data structures - mostly using books,online resources and lots of coding. Say I spend 1-2 years covering those basics. Do you think my foundation would be solid, or still lack in comparison to someone who went to college?

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• Two different domains as one user session

  - by Mathew Foscarini

  I have two websites that are run as the same service. Each domain offers articles from a different market. At the top of each page the two domains are shown as menu options. If a user clicks one they can switch to the other domain. See here: http://www.cgtag.com Each domain has a different Google Analytics account, and when a user switches domains Google is counting this as a new session. It's listing the other domain as the "referral" for that new session. When the user switches back to the first domain Google is counting this as a returning visitor. This is messing up my reports. Showing returning visitors values that are higher than reality. It's also increasing hits on landing pages when the user switches, and listing the other domain as a referral site. I've found tips on how to list two domains as one website, but that results in merging the data. I want to keep the two domains separate so that I can track each ones performance, but I don't want to count domain changes as new sessions. Maybe something like treating the two domains as subdomains.

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• Troubles with MSVC++ redistributable

  - by Karolis Juodele

  A friend of mine is trying to install AutoCAD. In the install log it is written Install Microsoft Visual C++ 2005 Redistributable (x86) Failed Installation aborted, Result=1603 I've found a site which (hopefully) explains how to solve this: here However, my friend has not been able to uninstall the redistributables. The error message says The feature you are trying to use is on a network resource that is unavailable I've already suggested running this but that didn't help much. Only some of the redistributables could be uninstalled. What can be done? Do you think running some other cleanup tool could work? Or will we have to uninstall manually (how exactly would we do that)?

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• Bandwidth preserving browsing mode

  - by Elazar Leibovich

  I'm looking at some methods to browse the web, in situations where bandwidth is scarce (such as, flaky wifi connection, or mobile phone internet provider who overcharges the bandwidth). One thing that would save alot of bandwidth is not downloading images while browsing. This approach has two main drawbacks Sometimes a site's layout depends of images. There are some images you wish to see (thus disabling images downloading through firefox settings is not quite convenient). I'm looking therefor for a method that would allow me to Use some heuristic to find out which images are related to the website layout and allow them to be downloaded. Select a particular image from a website, download and display it. Maybe there's a firefox extension for that?

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• taskmgr.exe - Wrong Volume

  - by bcasp

  The other day my girlfriend used my computer to use one of those additional resource CD's that come with text books. This particular CD worked by acting like what seemed like a web server that hosted a site that the student is supposed to use (cgi-bin, python scripts...the whole deal). Today, I opened task manager to shut down some rogue IE's and got the following in an error popup with the title taskmgr.exe - Wrong Volume and Cancel/Try Again/Continue buttons: The wrong volume is in the drive. Please insert volume DosageCalc into drive D: (FYI: DosageCalc = nursing student) Clicking Cancel or Continue lets me continue to task manager. The CD hasn't been in the drive for days and I've used it since then with no problems. Where could task manager be holding onto this reference? My guess would be the registry somewhere...but I don't even know where to begin looking.

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• Windows Azure BidNow Sample &ndash; definitely worth a look

  - by Eric Nelson

  [Quicklink: download new Windows Azure sample from http://bit.ly/bidnowsample] On Mondays (17th May) in the  6 Weeks of Windows Azure training (Now full) Live Meeting call, Adrian showed BidNow as a sample application built for Windows Azure. I was aware of BidNow but had not found the time to take a look at it nor seems it running before. Adrian convinced me it was worth some a further look. In brief I like it :-) It is more than Hello World, but still easy enough to follow. Bid Now is an online auction site designed to demonstrate how you can build highly scalable consumer applications using Windows Azure. It is built using Visual Studio 2008, Windows Azure and uses Windows Azure Storage. Auctions are processed using Windows Azure Queues and Worker Roles. Authentication is provided via Live Id. Bid Now works with the Express versions of Visual Studio and above. There are extensive setup instructions for local and cloud deployment You can download from http://bit.ly/bidnowsample (http://code.msdn.microsoft.com/BidNowSample) and also check out David original blog post. Related Links UK based? Sign up to UK fans of Windows Azure on ning Check out the Microsoft UK Windows Azure Platform page for further links

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• capture login screen-not sucssecful

  - by yinon

  I'm using Ubuntu 12.04 . If more information is needed, please tell me. I Tried some guides to cature my login screen: How can I take a screenshot of the login screen? http://www.howtoforge.com/how-to-take-a-screenshot-of-your-login-screen I tried the first one, but after running: $ sudo bash /tmp/shot.sh >/tmp/shot.xwd I'm getting this: No protocol specified No protocol specified xwd unable to open display ':0' and i'm getting an xwd file in my tmp folder. running the other commands giving errors. tried the second one, after running: chvt 8; sleep 5; XAUTHORITY=/var/gdm/:0.Xauth DISPLAY=:0.0 import -window root /tmp/gdm-login-shot.png I got: No protocol specified No protocol specified import: unable to open X server ':0.0' @ error/import.c/ImportImageCommand/366 Many Thanks for helping (: EDIT to vine_user: here the output from the terminal-I cacked it from within the system while I'm looged in: ubuntu@PrecisePangolin:~$ echo 'sleep 5; DISPLAY=:0 XAUTHORITY=/var/run/lightdm/root/$DISPLAYDISPLAY xwd -root' > /tmp/shot.sh ubuntu@PrecisePangolin:~$ sudo bash /tmp/shot.sh >/tmp/shot.xwd bash: /tmp/shot.xwd: Permission denied ubuntu@PrecisePangolin:~$ sudo su root@PrecisePangolin:/home/ubuntu# sudo bash /tmp/shot.sh >/tmp/shot.xwd No protocol specified No protocol specified xwd: unable to open display ':0' root@PrecisePangolin:/home/ubuntu# EDIT 2!: HERE IT IS!: just uploading-this uploadong site is better than other iuset to use (: :

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• Install Win7 on Dell XPS1730: CD Driver missing

  - by Mies75

  Vista crashed on my DELL XPS 1730 laptop. Again. I deleted the RAID array, created a new one and started to install Window 7 from DVD. During the initial phase of installation the setup pop ups this: Load Driver: A required CD/DVD device driver is missing... I can then insert other media to load the drivers, but it can't find any. I checked the DELL site for drivers but I can only find firmware for the drive. Which driver do I need, and where can I download it?

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• Validating allowed characters or validating disallowed characters

  - by Tom

  I've always validated my user input based on a list of valid/allowed characters, rather than a list of invalid/disallowed characters (or simply no validation). It's just a habit I picked up, probably on this site and I've never really questioned it until now. It makes sense if you wish to, say, validate a phone number, or validate an area code, however recently I've realised I'm also validating input such as Bio Text fields, User Comments, etc. for which the input has no solid syntax. The main advantage has always seemed to be: Validating allowed chars reduces the risk of you missing a potentially malicious character, but increases the risk the of you not allowing a character which the user may want to use. The former is more important. But, providing I am correctly preventing SQL Injection (with prepared statements) and also escaping output, is there any need for this extra barrier of protection? It seems to me as if I am just allowing practically every character on the keyboard, and am forgetting to allow some common characters. Is there an accepted practice for this situation? Or am I missing something obvious? Thanks.

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• URL length and content optimised for SEO

  - by Brendan Vogt

  I have done some reading on what URLS should look like for search engine optimisation, but I am curious to know how mine would like, I need some advice. I have a tutorial website, and my categories is something like: Web Development -> Client Side -> JavaScript So if I have a tutorial called "What is JavaScript?", is it good to have a URL that looks something like: www.MyWebsite.com/web-development/client-side/javascript/what-is-javascipt Or would something like this be more appropriate: www.MyWebsite.com/tutorials/what-is-javascipt Just curious because I also read that it is wise to have keywords in your URLs. Do I need to add the identifiers of each categories in the link as well, something like: www.MyWebsite.com/1/web-development/5/client-side/15/javascript/100/what-is-javascipt 1 is the unique identifier (primary key) of category web development 5 is the unique identifier (primary key) of category client side 15 is the unique identifier (primary key) of category javascript 100 is the unique identifier (primary key) of tutorial what is javascript UPDATE This is not a programming question so can someone please help migrate this to the correct Q&A site without devoting my questions?

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