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Articles indexed Wednesday March 31 2010

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  • How does software installation in Linux work?

    - by Saif Bechan
    I am new to Linux and trying to set up a server. For this project I need some additional software, but how to install the software I'm interested in is not always obvious. For example, this was my experience with a PHP package called htscanner: There is no installation guide on the website. The website says that the version I used did not have any dependencies, but this is incorrect. "Release 0.8.1: No dependencies registered." There is no configuration guide on the website. After I managed to get it installed it still didn't work. I decided to just uninstall it and find a better solution. Uninstalling isn't straightforward; the best answer I got is to manually look for the files and delete them. What are the basic concepts of installing and uninstalling software on Linux? How is this supposed to work?

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  • Debian amd64 on Dell Studio 540 reboot hangs

    - by Shcheklein
    Hi, I have Dell Studio 540 desktop and Debian Lenny installed on it: 2.6.26-2-amd64 #1 SMP Tue Mar 9 22:29:32 UTC 2010 x86_64 GNU/Linux The problem is that I can't reboot it. It just hangs after "Will now restart" message. I've already tried: reboot=b, reboot=a, reboot=h kernel options. Nothing helps. Additional info (I can provide any other information): dmidecode System Information Manufacturer: Dell Inc. Product Name: Studio 540 lspci 00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03) 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) 00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 1 00:1c.2 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 3 00:1c.5 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 6 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 90) 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 IDE interface: Intel Corporation 82801JI (ICH10 Family) 4 port SATA IDE Controller 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller 00:1f.5 IDE interface: Intel Corporation 82801JI (ICH10 Family) 2 port SATA IDE Controller 02:00.0 FireWire (IEEE 1394): JMicron Technologies, Inc. Device 2380 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)

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  • Regarding Google Safe Browsing API

    - by Steve
    Does anyone know how to use the Google safe browsing API. I downloaded the entire the malware and phish update from the google safe browsing using the API key and tried comparing the hash of the suspicious site (md5_file method in php) but it did not work. I also tried comparing the hash of the suspicious site's url (md5 method in php). Am I doing something wrong here?

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  • Finding source of over release

    - by Benedict Lowndes
    Hi, I'm consistently seeing the same message sent in as a crash report from users of an app. It's clear that an object is being over-released but I'm unable to replicate it and I'm looking for tips on tracing the source of it. The relevant section from the crash report shows this: Application Specific Information: objc_msgSend() selector name: release Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 libobjc.A.dylib 0x90892edb objc_msgSend + 27 1 com.apple.CoreFoundation 0x95ec5a40 __CFBasicHashStandardCallback + 384 2 com.apple.CoreFoundation 0x95ec564e __CFBasicHashDrain + 478 3 com.apple.CoreFoundation 0x95ead6f1 _CFRelease + 353 4 com.apple.CoreFoundation 0x95eda0ed _CFAutoreleasePoolPop + 253 5 com.apple.Foundation 0x97ecedd6 NSPopAutoreleasePool + 76 6 com.apple.Foundation 0x97ececfe -[NSAutoreleasePool drain] + 130 7 com.apple.AppKit 0x9211255f -[NSApplication run] + 1013 8 com.apple.AppKit 0x9210a535 NSApplicationMain + 574 9 TheApp 0x000020a6 start + 54 I've used zombies and leaks, but haven't seen anything there. I've gone through the code and can't see it. What's the next step? Are there any hints I can discern from this information as to the source of it? Does the fact that this nearly exact same crash report is coming in repeatedly mean that it's the same object that's being over released, or because this is referring to the autorelease pool mean it could be any object? Does the reference to _CFRelease mean it's a Core Foundation object that's being over released?

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  • Cheetah with Cherrypy: how to load base templates, and do so automatically on change during developm

    - by Heikki Toivonen
    I am working on a cherrypy+cheetah app and would like to improve the development experience. I have everything working when I manually compile templates beforehand. However, during development I'd rather just load the templates every time they are referenced so that I don't need to kill and restart my application. I have a couple of issues I am facing: If I have templates inheriting from base templates, I get import errors (can't find base templates). I think I had this actually working during my experiments, but unfortunately didn't save it and now I can't make it work. Suppose I get 1. working, how do make it so that edits even in base templates get picked up without restart. Below is my sample application that should demonstrate the problems. The directory structure is as follows: t.py templates/ base.tmpl index.tmpl t.py: import sys import cherrypy from Cheetah.Template import Template class T: def __init__(self, foo): self.foo = foo @cherrypy.expose def index(self): return Template(file='templates/index.tmpl', searchList=[{'foo': self.foo}]).respond() cherrypy.quickstart(T(sys.argv[1])) base.tmpl: #def body This is the body from the base #end def This is the base doc index.tmpl: #from templates.base import base #extends base #def body $base.body(self) This is the extended body #end def This is from index Run it like this: python t.py Something

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  • .Net - using FileIOPermission with mask in file name

    - by Max Gontar
    Hello! I would like to apply FileIOPermission on set of files using mask in file name, ex. on all txt files in folder C:\TMP: [type: FileIOPermission(SecurityAction.PermitOnly, Read = @"C:\TMP\*.txt")] class SomeClass { static void testPermissions() { Console.WriteLine("allowed action"); File.OpenRead(@"C:\TMP\1.txt"); // <--- here goes exception Console.WriteLine("denied action"); try { File.Create(@"C:\TMP\2.txt"); } catch (Exception e) { Console.WriteLine(e.Message); } finally { Console.ReadKey(); } } } This throws ArgumentException "Illegal characters in path." What is wrong? Is it possible to achieve anyway?

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  • resolving localhost in php so can be views outside VM

    - by DA
    I'm running Windows 7. Within, I'm running Virtualbox and Ubuntu. Within Ubuntu, I'm running Apache and using PHP codeigniter. To reference our CSS and JS files, we use this syntax: <?php echo site_url('css/styles.css'); ?> When viewing the site locally (within Ubuntu VM) that resolves to: http://localhost/styles.css So works fine. The catch is when I access that site from within Windows 7 (for IE testing). To access the site in Windows 7, I refer to the IP address of the VM: http://xx.x.x.x/ That loads the site but, alas, all the site_url variables are still being rewritten as 'localhost'. Said files obviously don't exist on the localhost of my windows 7. Is there a way around this short of just hard-coding relative links in my PHP file?

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  • Web bot in C++/PHP.

    - by John
    Hello, I've recently started learning PHP, but I have a wide knowledge on C++. I've been wondering how to make a web bot and now, I would greatly like to make one. I won't be using this robot for spamming or anything, just as a test of what PHP/C++ can do online. I was wondering how I could go about doing this and if you have any articles/tutorials that would be helpful. Thanks, John

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  • CCAnimate/CCAnimation cause inconsistent setTexture behavior in cocos2d on iPhone

    - by chillid
    Hi, I have a character that goes through multiple states. The state changes are reflected by means of a sprite image (texture) change. The state change is triggered by a user tapping on the sprite. This works consistently and quite well. I then added an animation during State0. Now, when the user taps - setTexture gets executed to change the texture to reflect State1, however some of the times (unpredictable) it does not change the texture. The code flows as below: // 1. // Create the animation sequence CGRect frame1Rect = CGRectMake(0,32,32,32); CGRect frame2Rect = CGRectMake(32,32,32,32); CCTexture2D* texWithAnimation = [[CCTextureCache sharedTextureCache] addImage:@"Frames0_1_thinkNthickoutline32x32.png"]; id anim = [[[CCAnimation alloc] initWithName:@"Sports" delay:1/25.0] autorelease]; [anim addFrame:[CCSpriteFrame frameWithTexture:texWithAnimation rect:frame1Rect offset:ccp(0,0)]]; [anim addFrame:[CCSpriteFrame frameWithTexture:texWithAnimation rect:frame2Rect offset:ccp(0,0)]]; // Make the animation sequence repeat forever id myAction = [CCAnimate actionWithAnimation: anim restoreOriginalFrame:NO]; // 2. // Run the animation: sports = [[CCRepeatForever alloc] init]; [sports initWithAction:myAction]; [self.sprite runAction:sports]; // 3. stop action on state change and change texture: NSLog(@"Stopping action"); [sprite stopAction:sports]; NSLog(@"Changing texture for kCJSports"); [self setTexture: [[CCTextureCache sharedTextureCache] addImage:@"SportsOpen.png"]]; [self setTextureRect:CGRectMake(0,0,32,64)]; NSLog(@"Changed texture for kCJSports"); Note that all the NSLog lines get logged - and the texture RECT changes - but the image/texture changes only some of the times - fails for around 10-30% of times. Locking/threading/timing issue somewhere? My app (game) is single threaded and I only use the addImage and not the Async version. Any help much appreciated.

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  • How can I show a "selection highlighting"-rectangle around a column of a Silverlight Grid?

    - by carlmon
    I have a feature matrix implemented with Silverlight's Grid where users need to select a product. How can I indicate selection with a rectangle around the whole selected column? It is easy to put a CheckBox at the bottom of each product's column, but that is too dull. I would have preffered to use SL Toolkit's DataGrid (with built-in row selection), but it cannot be orientated vertically for a feature matrix... Thanks, Carl

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  • log4net - how do I set DEBUG for my Console output, and INFO for my FileAppender?

    - by Greg
    Hi, I haven't quite worked this one out yet - how do I set DEBUG for my Console output, and INFO for my FileAppender? That is, how would I change the configuration below so that I can get the ConsoleAppender pumping out all logging from DEBUG upwards? Note that both appenders need to cover all logging (i.e. I don't want to use a scoped logger element that changes the log level for just one logger name) <log4net> <root> <level value="INFO" /> <appender-ref ref="LogFileAppender" /> <appender-ref ref="ConsoleAppender" /> </root> <appender name="LogFileAppender" type="log4net.Appender.FileAppender" > <param name="File" value="log-file.txt" /> <param name="AppendToFile" value="true" /> <layout type="log4net.Layout.PatternLayout"> <param name="Header" value="[Header]\r\n"/> <param name="Footer" value="[Footer]\r\n"/> <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" /> </layout> <filter type="log4net.Filter.LevelRangeFilter"> <param name="LevelMin" value="DEBUG" /> <param name="LevelMax" value="WARN" /> </filter> </appender> <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" > <layout type="log4net.Layout.PatternLayout"> <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] - %m%n" /> </layout> </appender> </log4net>

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  • What makes an effective UI for displaying versioning of structured hierarchical data

    - by Fadrian Sudaman
    Traditional version control system are displaying versioning information by grouping Projects-Folders-Files with Tree view on the left and details view on the right, then you will click on each item to look at revision history for that configuration history. Assuming that I have all the historical versioning information available for a project from Object-oriented model perspective (e.g. classes - methods - parameters and etc), what do you think will be the most effective way to present such information in UI so that you can easily navigate and access the snapshot view of the project and also the historical versioning information? Put yourself in the position that you are using a tool like this everyday in your job like you are currently using SVN, SS, Perforce or any VCS system, what will contribute to the usability, productivity and effectiveness of the tool. I personally find the classical way for display folders and files like above are very restrictive and less effective for displaying deep nested logical models. Assuming that this is a greenfield project and not restricted by specific technology, how do you think I should best approach this? I am looking for idea and input here to add values to my research project. Feel free to make any suggestions that you think is valuable. Thanks again for anyone that shares their thoughts.

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  • Enabling and Disabling DCA

    - by Rayne
    Hi all, I'm using Linux Kernel version 2.6.33 on a server with Intel Xeon X5570. I assume that Intel's DCA is already enabled on my system, because I see # dmesg | grep dca dca service started, version 1.12.1 Am I right? I would like to test the effects of with and without DCA. How can I disable DCA? Thank you. Regards, Rayne

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  • How to calculate the height of a MultiCell/writeHTMLCell in TCPDF?

    - by merkuro
    I try to create a PDF with multiple pages and need to calculate the height of each individual element (MultiCell) in advance to prepare for a page break. According to the documentation there are a couple of functions out there like GetCharWidth/GetStringWidth to support me in doing it on my own, but besides a potential performance lost I probably will not do it the right anyway. Suggestions to achieve my goal in a more elegant way? Reference: TCPDF

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  • Turing Machine & Modern Computer

    - by smwikipedia
    I heard a lot that modern computers are based on Turing machine. I'd like to share my understanding and hear your comments. I think the computer is a big general-purpose Turing machine. Each program we write is a small specific-purpose Turing machine. The classical Turing machine do its job based on the input and its current state inside and so do our programs. Let's take a running program (a process) as an example. We know that in the process's address space, there's areas for stack, heap, and code. A classical Turing machine doesn't have the ability to remember many things, so we borrow the concept of stack from the push-down automaton. The heap and stack areas contains the state of our specific-purpose Turing machine (our program). The code area represents the logic of this small Turing machine. And various I/O devices supply input to this Turing machine. The above is my naive understanding about the working paradigm of modern computer. I couln't wait to hear your comments. Thanks very much.

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  • what is size_t in C

    - by benjamin button
    Hi, i am getting confused with size_t in C. i know that it is returned by a sizeof operator. But what exactly it is?Is it a datatype? let's say i have a for loop int i; or size_t i;//which one should i use? for(i=0;i<some_size;i++)

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  • Where can I find a good description on how to use COM with Windows Services?

    - by Sam Youtsey
    Hi there, I'm looking to pass parameters into a Windows Service not only upon launch but while it's still running as well. I've heard the best way to do this would be through the COM but I have no idea where to even get started. Are there any good places you can recommend where I can find some helpful information about how to get started with the COM and Windows Services? Thanks in advance!

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