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  • Using Url Rewrite to Block Page Requests

    - by The Official Microsoft IIS Site
    The other day I was checking the traffic stats for my WordPress blog to see which of my posts were the most popular. I was a little concerned to see that wp-login.php was in the Top 5 total requests almost every month. Since I’m the only author on my blog my logins could not possibly account for the traffic hitting that page. The only explanation could be that the additional traffic was coming from automated hacking attempts. Any server administrator concerned about security knows that “ footprinting...(read more)

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  • Simple Query tuning with STATISTICS IO and Execution plans

    A great deal can be gleaned from the use of the STATISTICS IO and the execution plan, when you are checking that a query is performing properly. Josef Richberg, the current holder of the 'Exceptional DBA' award, explains how an apparently draconian IT policy turns out to be a useful ways of ensuring that Stored Procedures are carefully checked for performance before they are released

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  • CAPTCHA blocking for my scraping script?

    - by Surabhil Sergy
    I am working on a scraping project which involves getting web data and parsing them for further use. I have been working using PHP and CURL to make scraping scripts which crawls web data and I make use of either PHP Dom or Simple HTML DOM Parser library for these kinds of projects. On a recent project I encountered some challenges; initially I found the target website blocked my server IP such that the server could not make any successful requests to the site. Understanding these issues as common I bought a set of private proxies and tried to make request calls using them. Though this could get successful response, I noticed the script is getting some kind of blocks after 2-3 continuous requests. On printing and checking the response I could see a pop-up asking for CAPTCHA validation. I could not see any captcha characters to be entered and it also shows an error “input error: invalid referrer”. On examining the source I could see some Google recaptcha scripts within. I’m stuck at this point and I m not able to execute my script. My script is used for gathering data and it needs to go through a large number of pages periodically over the site. But in the current scenario I am not able to proceed with my script. I could see there are some options to overcome these captcha issues and scraping these kinds of sites too are common. I have been checking my script performance and responses over last two months. I could see during first month I was able to execute very large number of requests from a single IP and I was able to get results. Later I get an IP block and used private proxies which could get me some results. Later I am facing now with the captcha trouble. I would appreciate any help or suggestions in this regard. (Often in this kind of questions I used to get a first comment as, ‘Have you asked for prior permission from the target?’ .I haven’t ,but I know there are many sites doing so to get the details out of sites and target sites may not often give access to them. I respect the legality and scraping etiquettes but I would like to know at what point I stuck and how could I overcome that! ) I could provide any supporting information if needed.

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  • How to disable Chrome's Incognito Mode?

    - by Jason Tu
    I use this extension called Website Blocker to discourage me from checking Gmail/Reddit. However, it is easy and tempting to open a New Incognito Window; since extensions are disabled in Incognito Mode, I'm still able to browse Gmail/Reddit in this manner. Is there any way to disable Chrome's Incognito Mode in Ubuntu? Ideally, this would encourage me to use my smartphone as a dedicated Gmail/Reddit checker.

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  • Maps for Africa

    - by samkea
    My friends and some people from i-network Uganda, have been requesting me to help them with some international maps. I have uploaded these ones here, you can download and re-use them. They are not so upto-date but are the one s i use. I will continue posting any updates here and will remove the older ones if need be. Enjoy! Africa Bounderies: http://cid-5e33c7b2ca3aa2a9.skydrive.live.com/self.aspx/Maps/0412010AdminBdries^_Africa.rar   I will be posting others soon, keep checking....

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  • Upgrade from 13.04 to 13.10 fails

    - by John
    Tried to upgrade my computer from 13.04 to 13.10, but directly after pressing the upgrade, a couple files appear to download, and then the window disappears and nothing happens... I tried it from the terminal window and this is the output (same result) jessijo@halesite3:~$ update-manager Checking for a new Ubuntu release authenticate 'saucy.tar.gz' against 'saucy.tar.gz.gpg' extracting 'saucy.tar.gz' Real-time signal 0 Any ideas?

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  • Failed 12.04 installation

    - by Rob Sayer
    I tried installing Ubuntu 12.04 today. Not an upgrade, a new installation. It didn't work. My computer specs: Computer: Compaq presario CQ-104CA OS: Windows 7 Home 64 bit CPU: AMD V140 BIOS: latest Graphics: amd m880g with ati mobility radeon hd 4250 Wireless: atheros ar9285 Internal HD:SATA I wasn't connected to the internet at the time ... I know of a number of people who have installed ubuntu unconnected and just updated later. It seemed to go normally until I got to the part where I chose to install dual boot linux/windows. Then, the screen went black and the following test appeared (I left out the [OK]'s): checking battery state starting crash report submission daemon stating cpu interrupts balancing daemon stopping system V runlevel compatibility starting configure network device security stopping configure network device security stopping cold plug devices stopping log initial device creation starting enable remaining boot-time encrypting devices starting configure network device security starting save udev log and update rules stopping save udev log and update rules stopping enable remaining boot-time encrypted block devices checking for running unattended-upgrades acpid: exiting speech-dispatcher disabled: edit /etc/default/speech-disorder At this point, the CD is ejected. Then nothing. If I press the return key, it boots Windows. I don't think that's what's supposed to happen. Thinking the cd media or dvd drive may have been faulty, I downloaded the .iso again and made a bootable USB stick, as per your instructions. This time there was no cryptic crash screen. It just booted windows. I can't find any log files it may have left. Thinking the amd64 version may have been the wrong one, I tried downloading the x86 version. Same thing, both from cd and usb drive. Note I downloaded both files twice. I doubt it was a corrupted d/l. This is supposed to be a simple, transparent install. I went to the time and trouble of looking up my devices and drivers re ubuntu beforehand, and was prepared to do some configuration, though I know someone who has the same wireless device and his worked righted out of the box. But I spent over 3 hours trying to install it with only the above to show for it.

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  • How do I implement collision detection with a sprite walking up a rocky-terrain hill?

    - by detectivecalcite
    I'm working in SDL and have bounding rectangles for collisions set up for each frame of the sprite's animation. However, I recently stumbled upon the issue of putting together collisions for characters walking up and down hills/slopes with irregularly curved or rocky terrain - what's a good way to do collisions for that type of situation? Per-pixel? Loading up the points of the incline and doing player-line collision checking? Should I use bounding rectangles in general or circle collision detection?

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  • Object detection in bitmap JavaScript canvas

    - by fallenAngel
    I want to detect clicks on canvas elements which are drawn using paths. So far I have stored element paths in a JavaScript data structure and then check the coordinates of hits which match the element's coordinates. Rendering each element path and checking the hits would be inefficient when there are a lot of elements. I believe there must be an algorithm for this kind of coordinate search, can anyone help me with this?

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  • ArchBeat Link-o-Rama for November 16, 2012

    - by Bob Rhubart
    X.509 Certificate Revocation Checking Using OCSP protocol with Oracle WebLogic Server 12c | Abhijit Patil Abhijit Patil's article focuses on how to use X.509 Certificate Revocation Checking Functionality with the OCSP protocol to validate in-bound certificates. Although this article focuses on inbound OCSP validation using OCSP, Oracle WebLogic Server 12c also supports outbound OCSP validation. Leveraging Oracle Scorecard and Strategy Management for Everyday BI Needs "Oracle Scorecard and Strategy Management (OSSM) is built-upon the premise that a scorecard system should not be separate from the BI system, like many comparable tools are today," says author Kevin McGinely. "Instead of a separate application with its own data, its own data definitions, and its own front-end, Oracle made the choice to integrate OSSM directly into OBIEE." Applying BI for personal productivity recognition and gamification | Capgemini Oracle Blog "It is quite obvious that if you want people to participate you need an appealing and intuitive user interface," says Capgemini's Henk Vermeulen in this interesting exploration of gamification in the enterprise. Build and release OSB projects with Maven | Edwin Biemond "With Maven we are able to build and deploy OSB projects," says Oracle ACE Edwin Biemond. "The artifacts generated by Maven called snaphosts and releases can be automatically uploaded to a software repository. These versioned OSB jars can then be downloaded by the OSB Servers and deployed." Biemond shows you how in this detailed technical post. ADF Generator for Dynamic ADF BC and ADF UI | Andrejus Baranovskis Oracle ACE Director Andrejus Baranovskis' post is an extension of his OOW12 presentation, "Oracle ADF Implementations Around the Globe: Best Practices," and includes the sample application he promised to share. Service-oriented organizations have a head start in the cloud race | ZDNet ZDNet SOA blogger Joe McKendrick offers a snapshot of a recent report Forrester analyst James Staten. Oracle Fusion Middleware Security: X509 Fallback to Form | Debasish BhattacharyaOracle Fusion Middleware A-Team architect Debasish Bhattacharya shares a solution that resulted from brainstorming with colleagues Chris Johnson and Brian Eidelman. "The solution is not very difficult," says Bhattacharya, "though it needs some additional configurations and coding." It's all presented in this detailed post. Agile Architecture | David Sprott "There is ample evidence that Agile Architecture is a primary contributor to business agility, yet we do not have a well understood architecture management system that integrates with Agile methods," observes David Sprott in this extensive post. Thought for the Day "Operating systems are like underwear — nobody really wants to look at them." — Bill Joy Source: SoftwareQuotes.com

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  • How to make xinit run at boot - pre login

    - by javanix
    I'm running a stripped down (minimal install version) of Lucid. For some reason, xinit seems to be failing on boot and I'm not sure what logs I should start checking - normally I would go with the Xorg ones in /var/logs, but running xinit manually after login works just fine, and as far as I can tell the usual Xorg.#.# files aren't created. Can anyone give me any suggestions as to where to start looking?

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  • How do I tell the cases when it's worth to use LINQ?

    - by Lijo
    Many things in LINQ can be accomplished without the library. But for some scenarios, LINQ is most appropriate. Examples are: SELECT - http://stackoverflow.com/questions/11883262/wrapping-list-items-inside-div-in-a-repeater SelectMany, Contains - http://stackoverflow.com/questions/11778979/better-code-pattern-for-checking-existence-of-value Enumerable.Range - http://stackoverflow.com/questions/11780128/scalable-c-sharp-code-for-creating-array-from-config-file WHERE http://stackoverflow.com/questions/13171850/trim-string-if-a-string-ends-with-a-specific-word What factors to take into account when deciding between LINQ and regular .Net language elements?

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  • Unable to connect to the Internet via LAN despite the connection showing as established

    - by Vikram
    I have installed Ubuntu 11.10. I am facing a problem connecting via LAN. We have a firewalled network. After entering static IP, gateway, DNS, etc., it shows connection as established but we are unable to use the Internet using the wired connection (LAN). While checking system testing following error shows under network test: ERROR:root:Could not find def gateway info in /proc ERROR:root:Could not find default gateway by running route

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  • What does the impression and ctr means in google webmaster

    - by KoolKabin
    I am checking google webmaster tools. I entered the search queries section. There i found alot keywords and their impression and ctr etc. I clicked on one of the query keyword there it shows the keyword and position in search result, but when i go to google.com and type the specified keyword it shows no impressions too... how do i measure find my site's impression on google.com my site: http://www.trekkingandtoursnepal.com keyword: trekking nepal

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  • Unable to download torrents when using a VPN

    - by chad
    I am running Ubuntu 13.04 and using OpenVPN and vpnbook. When I am using a VPN I am unable to download torrents. I have tried it on 3 different torrent clients (qBittorrent, Deluge, and Transmission). Deluge just says "Checking" and never begins downloading. qBittorrent says "stalled" next to the torrent and Transmission does not say anything and just doesn't download. Is there some network setting I am missing or some OpenVPN config I need to do?

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  • How can I chose the depth of a quadtree?

    - by Evpok
    In a 2d world, using a quadtree to prune pairs in collision detection, how can I chose the depth of said quadtree? The world I am dealing with is mostly made of moving objects¹, so the cost of dispatching the objects between the quadtree cells matter. So what I am interested in is the balance between the gain from less collision checking and the loss from more dispatching. 1. To be completely explicit, autonomous self-replicating cells competing for food sources, in an attempt to show my pupils predator-prey dynamics and genetic evolution at work

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  • Shrink NTFS Windows 7 Partition with GParted

    - by user15961
    I am running a dual-boot system with Windows 7 and Ubuntu 10.10. Initially I allocated about 20GB for my Ubuntu partition; however, I quickly ran out of that space and am now looking to expand my partition. Currently my NTFS partition (450GB) has about 130GB of free space. I tried using GParted to shrink the partition but encountered the following error. I booted into windows so I could run chkdsk but the countdown freezes at 1 upon reboot. I tried multiple methods to resolve that issue but nothing seems to work. Finally I gave up, and now I just want to know what is the best way for me to force GParted to shrink the partition regardless of the errors. I don't really have anything important and I don't mind risking the data. I just don't want to wipe the entire NTFS partition because I don't have a Windows install CD and might require Windows later on for some programs. I tried using sudo ntfsresize but that spews out the same error as GParted... Any ideas? Check and repair file system (ntfs) on /dev/sda2 00:00:09 ( ERROR ) calibrate /dev/sda2 00:00:00 ( SUCCESS ) path: /dev/sda2 start: 36944325 end: 976771119 size: 939826795 (448.14 GiB) check file system on /dev/sda2 for errors and (if possible) fix them 00:00:09 ( ERROR ) ntfsresize -P -i -f -v /dev/sda2 ntfsresize v2.0.0 (libntfs 10:0:0) Device name : /dev/sda2 NTFS volume version: 3.1 Cluster size : 4096 bytes Current volume size: 481191318016 bytes (481192 MB) Current device size: 481191319040 bytes (481192 MB) Checking for bad sectors ... Checking filesystem consistency ... Cluster 63468 is referenced multiple times! Cluster 63469 is referenced multiple times! Cluster 63465 is referenced multiple times! Cluster 63466 is referenced multiple times! Cluster 63467 is referenced multiple times! Cluster 165621 is referenced multiple times! Cluster 165622 is referenced multiple times! Cluster 165623 is referenced multiple times! Cluster 165624 is referenced multiple times! ERROR: Filesystem check failed! ERROR: 9 clusters are referenced multiply times. NTFS is inconsistent. Run chkdsk /f on Windows then reboot it TWICE! The usage of the /f parameter is very IMPORTANT! No modification was and will be made to NTFS by this software until it gets repaired.

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  • How to unit test with lots of IO

    - by Eric
    I write Linux embedded software which closely integrates with hardware. My modules are such as : -CMOS video input with kernel driver (v4l2) -Hardware h264/mpeg4 encoders (texas instuments) -Audio Capture/Playback (alsa) -Network IO I'd like to have automated testing for those functionalities, such as integration testing. I am not sure how I can automate this process since most of the top level functionalities I face are IO bound. Sure, it is easy to test functions individually, but whole process checking means depending on tons of external dependencies only available at runtime.

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  • object detection in bitmmap javacanvas

    - by user1538127
    i want to detect clicks on canvas elements which are drawn using paths. so far i have think of to store elements path in javascript data structure and then check the cordinates of hits which matches the elements cordinates. i belive there is algorithm already for thins kind o cordinate search. rendering each of element path and checking the hits would be inefficient when elements number is larger. can anyone point on me that?

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  • Defensive Error Handling

    TRY…CATCH error handling in SQL Server has certain limitations and inconsistencies that will trap the unwary developer, used to the more feature-rich error handling of client-side languages such as C# and Java. In this article, abstracted from his excellent new book, Defensive Database Programming with SQL Server, Alex Kuznetsov offers a simple, robust approach to checking and handling errors in SQL Server, with client-side error handling used to enforce what is done on the server.

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  • How to get Ubuntu automatically connect to (windows, cabled & shared) network folder?

    - by Koen
    Through the normal processes I enter my shared music folder on my Windows computer, i.e.: Places Network Windows pc Music. After rebooting my Ubuntu laptop, however, this connection isn't automatically set again. My question: How do I get Ubuntu to automatically connect to that shared folder after login (while first checking whether the Windows computer is 'online')? This because I added the folder to the Banshee Library, and I currently first have to go to the shared folder manually before Banshee can play the files.

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  • Once installed geos library (C++, and C), and then trying to install rgeos package (R), it reports geos-config missing!

    - by user1873888
    Knowing that the package rgeos, from the R language, requieres a prior installation of geos libraries, I installed, both, libgeos and libgeos-c1 (3.2.2), using the synaptic installer in my Ubuntu 12.04 (32 bit) machine. Then I tried to install rgeos directly from the R console, and it issued a message in the sense that geos-config was not found. The output is as follows: > install.packages("rgeos") Installing package(s) into ‘/home/checo/R/i486-pc-linux-gnu-library/2.15’ (as ‘lib’ is unspecified) also installing the dependency ‘sp’ probando la URL 'http://cran.rstudio.com/src/contrib/sp_1.0-9.tar.gz' Content type 'application/x-gzip' length 882102 bytes (861 Kb) URL abierta ================================================== downloaded 861 Kb probando la URL 'http://cran.rstudio.com/src/contrib/rgeos_0.2-19.tar.gz' Content type 'application/x-gzip' length 221471 bytes (216 Kb) URL abierta ================================================== downloaded 216 Kb * installing *source* package ‘sp’ ... ** package ‘sp’ successfully unpacked and MD5 sums checked ** libs gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c R centroid.c -o Rcentroid.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c gcdist.c -o gcdist.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c init.c -o init.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c pip.c -o pip.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c pip2.c -o pip2.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c sp_xports.c -o sp_xports.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c surfaceArea.c -o surfaceArea.o gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -O3 -pipe -g -c zerodist.c -o zerodist.o gcc -std=gnu99 -shared -o sp.so Rcentroid.o gcdist.o init.o pip.o pip2.o sp_xports.o surfaceArea.o zerodist.o -L/usr/lib/R/lib -lR installing to /home/checo/R/i486-pc-linux-gnu-library/2.15/sp/libs ** R ** data ** demo ** inst ** preparing package for lazy loading ** help *** installing help indices ** building package indices ** installing vignettes ‘intro_sp.Rnw’ ‘over.Rnw’ ** testing if installed package can be loaded * DONE (sp) * installing *source* package ‘rgeos’ ... ** package ‘rgeos’ successfully unpacked and MD5 sums checked configure: CC: gcc -std=gnu99 configure: CXX: g++ configure: rgeos: 0.2-17 checking for /usr/bin/svnversion... no configure: svn revision: 394 checking geos-config usability... ./configure: line 1385: geos-config: command not found no configure: error: geos-config not usable ERROR: configuration failed for package ‘rgeos’ * removing ‘/home/checo/R/i486-pc-linux-gnu-library/2.15/rgeos’ Warning in install.packages : installation of package ‘rgeos’ had non-zero exit status Forgive my ignorance, but I don't know where this file, "geos-config", comes from: should it be generated by the gcc compilations above, or should it be previously installed when the libgeos libraries were intalled? I learnt, from another machine, that "geos-config" is an executable and that it should be installed in /usr/bin. Do you have any idea on what's wrong with my procedure? Thanks, -Sergio.

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  • external USB HD doesn't show up on 'sudo fdisk -l' on one Ubuntu, shows up on another (both 'precise')

    - by Menelaos
    I have a 1.5TB WD external USB HDD and two Ubuntu systems, both 'precise'. When I plug the disk on system A it doesn't show up on the output of sudo fdisk -l nor is it automatically mounted (note that that wasn't always the case - it used to appear in the past). When I plug it on system B (again Ubuntu precise) it shows up when I do a sudo fdisk -l (output appended at the end) and mounts automatically just fine. What does this discrepancy point to and what kind of diagnostics should I run / tools I should use to troubleshoot the problem? I followed the suggestion I received to do a sudo tail -f /var/log/syslog and the output is the following when I plug, unplug and replug the USB cable on System A: Sep 14 23:27:09 thorin mtp-probe: checking bus 2, device 3: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2" Sep 14 23:27:09 thorin mtp-probe: bus: 2, device: 3 was not an MTP device Sep 14 23:28:01 thorin kernel: [ 338.994295] usb 2-2: USB disconnect, device number 3 Sep 14 23:28:04 thorin kernel: [ 341.808139] usb 2-2: new high-speed USB device number 4 using ehci_hcd Sep 14 23:28:04 thorin mtp-probe: checking bus 2, device 4: "/sys/devices/pci0000:00/0000:00:13.2/usb2/2-2" Sep 14 23:28:04 thorin mtp-probe: bus: 2, device: 4 was not an MTP device Sep 14 23:29:54 thorin AptDaemon: INFO: Quitting due to inactivity Sep 14 23:29:54 thorin AptDaemon: INFO: Quitting was requested (I guess the last two message are irrelevant). Output of sudo fdisk -l on System B $ sudo fdisk -l Disk /dev/sda: 1500.3 GB, 1500301910016 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00070db4 Device Boot Start End Blocks Id System /dev/sda1 * 2048 2905114623 1452556288 83 Linux /dev/sda2 2905116670 2930276351 12579841 5 Extended /dev/sda5 2905116672 2930276351 12579840 82 Linux swap / Solaris Disk /dev/sdb: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x9c849c84 Device Boot Start End Blocks Id System /dev/sdb1 * 63 488375999 244187968+ 7 HPFS/NTFS/exFAT Disk /dev/sdg: 1500.3 GB, 1500299395072 bytes 255 heads, 63 sectors/track, 182401 cylinders, total 2930272256 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0003e17f Device Boot Start End Blocks Id System /dev/sdg1 2048 2930272255 1465135104 7 HPFS/NTFS/exFAT

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