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• Bash script — determine if file modified?

  - by Alan H.

  I have a Bash script that repeatedly copies files every 5 seconds. But this is a touch overkill as usually there is no change. I know about the Linux command watch but as this script will be used on OS X computers (which don’t have watch, and I don’t want to make everyone install macports) I need to be able to check if a file is modified or not with straight Bash code. Should I be checking the file modified time? How can I do that? Edit: I was hoping to expand my script to do more than just copy the file, if it detected a change. So is there a pure-bash way to do this?

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• DBD::Advantage and 64-bit Perl - Always 6060

  - by WarheadsSE

  I realize that I am attempting to go beyond the "supported" behavior of the manf's released drivers for perl, after all they have only released it in package with x86 .so's. However, since I cannot use their package with x64 Perl on a RHEL 5.4 x86_64 box, and maintaining a seperate install of x86 perl just for this one package, I have made an attempt to get this puppy working thanks to released 64-bit .so's that accompany other driver packages for Advantage. What I have done to this point: download beta 10 DBI drivers, in 32 download beta 10 PHP extension (it contains 32 and x86_64) copy the required DLLs into the ads-lib location (eg /usr/local/ads/lib64) compile the Perl DBI driver with the path to the lib64's .so's Good compilation, good install, good use. The problem is that I always get : failed: [iAnywhere Solutions][Advantage SQL][ASA] Error 6060: Advantage Database Server not available on specified server. axServerConnect (SQL-HY000)(DBD: db_login/SQLConnect err=-1) Does anyone have any ideas? EDIT: fixed package name in post title

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• [C#] SQLite - Creating and changing databases on the fly

  - by Oskar Kjellin

  Today I use SQLite and send a database-file with the project. However I want the database to be created when the user first starts the software. Is there a way to copy the code needed to create a database based on the existing database? The problem is that when a user downloads a new version he might be tricked into copying over his last database and lose the data. I'd like a nice way to check the version of the database and modify it if I need new columns or tables etc. Or, if it does not exist at all, create a new database? I know I can probably make create the code to make the database from the beginning but I want it to be based on the existing database I have created by a gui.

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• Implementing fallback from Google AJAX Libraries API to local jQuery

  - by Maxim Z.

  After looking up the advantages and disadvantages of using Google's AJAX Libraries API instead of using jQuery locally, I saw that someone wrote in an answer (here on Stack Overflow, of course) that it's possible to get around the downtime that Google's API sometimes experiences by somehow falling back to a local copy of the library you use. I want to use Google's AJAX Libraries API on my site, but I'm concerned about this possible downtime and I'm curious how such a fallback procedure can be implemented. Has anybody ever tried doing this? Can you point me towards some code that accomplishes such a feat? Thanks in advance.

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• setting source classpath in eclipse with stupid project structure

  - by lisak

  What do you guys do, when you have huge project built with ant for instance, where the source folders are right bellow the root project folder, for building classpath from source files ? putting entire project as a source folder is nonsense. Putting separate folders as source folders can't be done if they are part of the package hierarchy and the only thing I could think of, is to copy the source folders into a separate folder and add it then as source folder which is weird but I don't know how else to do it. Having to duplicate sources just because of the eclipse way of making classpath and also because of somebody doing stupid project structure

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• What is the correct way to backup ZODB blobs?

  - by joeforker

  I am using plone.app.blob to store large ZODB objects in a blobstorage directory. This reduces size pressure on Data.fs but I have not been able to find any advice on backing up this data. I am already backing up Data.fs by pointing a network backup tool at a directory of repozo backups. Should I simply point that tool at the blobstorage directory to backup my blobs? What if the database is being repacked or blobs are being added and deleted while the copy is taking place? Are there files in the blobstorage directory that must be copied over in a certain order?

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• How can I get this code involving unique_ptr and emplace_back to compile?

  - by Neil G

  #include <vector> #include <memory> using namespace std; class A { public: A(): i(new int) {} A(A const& a) = delete; A(A &&a): i(move(a.i)) {} unique_ptr<int> i; }; class AGroup { public: void AddA(A &&a) { a_.emplace_back(move(a)); } vector<A> a_; }; int main() { AGroup ag; ag.AddA(A()); return 0; } does not compile... (says that unique_ptr's copy constructor is deleted) I tried replacing move with forward. Not sure if I did it right, but it didn't work for me.

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• How to secure licensekey generation

  - by Jakob Gade

  Scenario, simplified for brevity: A developer creates an application for a customer. The customer sells this app to end-users. The app requires a license key to run, and this key is generated by the customer for each end-user with a simple tool created by the developer. The license key contains an expiry date for the license and is encrypted so the end-user can’t tamper with it. The problem here is that the developer (or anybody who has a copy of the license key generator) can easily create valid license keys. Should this generator fall into the wrong hands, it could spell disaster for the customers business. Ideally, the customer would have to use a password to create new license keys. And this password would be unknown to the developer, and somehow baked into the decryption algorithm in the application so it will fail if an attempt to use an unauthorized key is made. How would you implement a solution for this problem that is both transparent and secure?

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• Why don't these class attributes register?

  - by slypete

  I have a factory method that generates django form classes like so: def get_indicator_form(indicator, patient): class IndicatorForm(forms.Form): #These don't work! indicator_id = forms.IntegerField(initial=indicator.id, widget=forms.HiddenInput()) patient_id = forms.IntegerField(initial=patient.id, widget=forms.HiddenInput()) def __init__(self, *args, **kwargs): forms.Form.__init__(self, *args, **kwargs) self.indicator = indicator self.patient = patient #These do! setattr(IndicatorForm, 'indicator_id', forms.IntegerField(initial=indicator.id, widget=forms.HiddenInput())) setattr(IndicatorForm, 'patient_id', forms.IntegerField(initial=patient.id, widget=forms.HiddenInput())) for field in indicator.indicatorfield_set.all(): setattr(IndicatorForm, field.name, copy(field.get_field_type())) return type('IndicatorForm', (forms.Form,), dict(IndicatorForm.__dict__)) I'm trying to understand why the top form field declarations don't work, but the setattr method below does work. I'm fairly new to python, so I suspect it's some language feature that I'm misunderstanding. Can you help me understand why the field declarations at the top of the class don't add the fields to the class? In a possibly related note, when these classes are instantiated, instance.media returns nothing even though some fields have widgets with associated media. Thanks, Pete

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• How can a component at designtime determine the project directory

  - by Heinz Z.

  Hello, I write a component which should store some information relative to the project directory. Every time a property of my component is changed it should write a file. So how can a component determine the current project directory at design time. Thanks in advance EDIT: I want to generate a delphi source file every time a property of my component is changed, so that I always get the latest version when I compile my code. Think of it as a kind of code generator. At the moment I set whole path and filename where the source should be stored but I prefer a relative path to the project (or the form/datamodule which contains my component) to make it easier to copy the project on different developer machines.

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• The host 'smtp' could not be found.

  - by SmartestVEGA

  I am getting the following error while sending mail by click of a button in MS access form I am using sendObject to send mail using vba code. The host 'smtp' could not be found. Please verify that you have entered the server name correctly. Account: 'pop3', Server: 'smtp', Protocol: SMTP, Port: 25, Secure(SSL): No, Socket Error: 11001, Error Number: 0x800CCC0D Points to note: I am able to send and receive mails in my outlook; Problem is only when send mails through VBA access application.(Means it is not a outlook client configuration problem) When i copy paste the Vba application to another PC, i could successfully send emails without any error. (means this is not a vba access application problem) Please help.

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• Code working in jsFiddle but not in browser...

  - by Jascination

  I'm trying to run the following code, written on my local machine: http://www.jsfiddle.net/WShdx/3/ Functionality-wise (ignore the broken images in the previous and next buttons, and the wrongly-sized main images) the click/hover function is working properly in jsfiddle. However, on my local machine it's not working at all. For all intents and purposes the code is identical, except the local copy has this head section to load in the javascript/css files that are contained within the jsfiddle page: <head> <title>Jquery Wizard</title> <link href="style.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js"></script> <script src="wizard.js" type="text/javascript" ></script> </head> Is there some wonderful function of jsFiddle that is making my code magically work, or am I missing something here?

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• Whats up with cross site Scripting (getJSON) and flickr example

  - by Bernhard

  In past i had read the documentation about getJSON and there is an example with a flickr photo api. (the example with the [pussy]cats :-)). No I ask myself why is it possible, to access flickr directly with this example. Ive tried this by store this code on my local machine - it works but if I use a local copy of jquery i just get an error in firebug like this $ is not defined myurl/test.html Line 11 Does anybody of you have a solution for this paradox thing? This is the documentation url HTTP:api.jquery.com/jQuery.getJSON/ The example isn´t also not working if I store the HTTP:code.jquery.com/jquery-latest.js in my local jquery file. I also dont understand why the request isnt´s visible in Firebug Console Thank you in advance Bernhard

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• How to create a draggable overlayItem in Android 2.1

  - by Zap

  Does anyone know how to make a map overlayitem draggable so I can press and hold it and drag it across the map. I am trying to duplicate the draggable icon behavior that's available on the iPhone. One developer suggested a possible solution is to detect a touch event, get rid of the existing overlay item, draw your own copy of the icon where the overlay item had been, manually animate that as the user drags, and then put the overlay item where the user drops it (getting rid of your manually-drawn icon). Does anyone have sample java code to do this Android 2.1? This would be much appreciated.

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• How can I prevent IIS from trying to load a dll?

  - by Abtin Forouzandeh

  My project is a Speech Server application using Windows Workflow. It runs as an app under IIS. It supports a plug-in system. Here is what is happening: Load DLL into memory and set the type on an InvokeWorkflow control. When the InvokeWorkflow control runs, it appears to correctly instantiate the workflow from the loaded assembly - it completes the Initialize method. Everything crashes an burns, the target workflow is never executed. I can resolve this by putting a copy of the DLL in the application's executing directory. The workflow then executes correctly So it appears that IIS is trying to reload the assembly, even though its already in memory. Is there anyway to alter or disable this behavior in IIS? Perhaps a hook I can write that will intercept the request to load the dll and use my own logic to do so?

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• FireBug didn't working.

  - by Nano HE

  Hi, I created a index.php file located in http://localhost/home/index.php. The file filled with the code below. <?php # //include the file require_once("FirePHP.class.php"); # //create the object $firephp = FirePHP::getInstance(true); # //send information $firephp->fb("Hello world!"); ?> I enabled fireBug and firePHP, BTW I download firePHPCore and copy FirePHP.class.php to http://localhost/home/FirePHP.class.php directory. To run this code I can't see the message “Hello world!” in the firebug console: I followed the tutorial http://yensdesign.com/2008/10/how-to-debug-php-code/ Any suggesion?

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• How to get SVN to ignore a directory inside an externals definition

  - by NerdStarGamer

  I'm using subversion to host my own repository for a WordPress installation. I've got it set up so that all of the core WordPress files are in their own directory (called wordpress) and set up to use svn:externals to link to the WordPress repository. I then have my own copy of the wp-content directory (located outside of the wordpress directory) which does not use svn:externals. This is all working fine. When I update my repository, the WordPress core gets updated. Since the WordPress repository contains it's own wp-content directory, it also updates that directory. So my file structure ends up looking something like this: / --/wordpress/ (wordpress repo) -----/wp-admin/ -----/wp-content/ --/wp-content/ (my local repo) I end up having two separate versions of the wp-content folder (one from my repo and one from the WordPress repo). I don't want the one from the WordPress repo (or at least not in that location). Is there a way for me to set svn to ignore the wordpress/wp-content directory while still using externals definition?

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• Why did my flash drive become "read only" and (how) can I fix it?

  - by Bob

  I have a brand new flash drive (one week old) that has become marked as read only, by Windows, Kubuntu and a bootable partitioner. Why did this happen? Is it fixable? If it is, how can I fix this? The problem Firstly, this drive is new. It's certainly not been used enough to die from normal wear and tear, though I would not discount defective components. The drive itself has somehow become locked in a read only state. Windows' Disk management: Diskpart: Generic Flash Disk USB Device Disk ID: 33FA33FA Type : USB Status : Online Path : 0 Target : 0 LUN ID : 0 Location Path : UNAVAILABLE Current Read-only State : Yes Read-only : No Boot Disk : No Pagefile Disk : No Hibernation File Disk : No Crashdump Disk : No Clustered Disk : No What really confuses me is Current Read-only State : Yes and Read-only : No. Attempted solutions So far, I've tried: Formatting it in Windows (in Disk management, the format options are greyed out when right clicking). DiskPart Clean (CLEAN - Clear the configuration information, or all information, off the disk.): DISKPART> clean DiskPart has encountered an error: The media is write protected. See the System Event Log for more information. There was nothing in the event log. Windows command line format >format G: Insert new disk for drive G: and press ENTER when ready... The type of the file system is FAT32. Verifying 7740M Cannot format. This volume is write protected. Windows chkdsk: see below for details Kubuntu fsck (through VirtualBox USB passthrough): see below for details Acronis True Image to format, to convert to GPT, to destroy and rebuild MBR, basically anything: failed (could not write to MBR) Details (and a nice story) Background This was a brand new, generic, 8GB flash drive I wanted to create a multiboot flash drive with. It came formatted as FAT32, though oddly a little larger than most 8 GIGAbyte flash drives I've come across. Approximately 127MB was listed as "used" by Windows. I never discovered why. The end usable space was about what I normally expect from a 8GB drive (approx 7.4 GIBIbytes). I had thrown quite a few Linux distros on, along with a copy of Hiren's. They would all boot perfectly. They were put on with YUMI. When I tried to put the Knoppix DVD on, YUMI added an odd video option to its boot comman which caused Knoppix to boot with a black screen on X. ttys 1 through 6 still worked as text only interfaces. A few days later, I took some time to take that odd video option off, making the boot command match the one that comes with Knoppix. On the attempt to boot, Knoppix reported some form of LZMA corruption. Leading up to the current issue I was thinking the Knoppix files may have been corrupted somehow, so I tried reloading it. The drive was nearly full (45MB free), so I deleted a generic ISO that also was not booting. That went fine. I then went through YUMI to 'uninstall' Knoppix, i.e. delete files and remove from the menus. The files went first, then the menus were cleared successfully. However, the free space was stuck at about 700MB, same as it was before removing Knoppix. In the old Knoppix folder, there was a 0 byte file named KNOPPIX that could not be deleted. I tried reinserting the drive to delete this file - without safely removing, if that made a difference (hey, first time for everything). Running the standard Windows chkdsk scan without /r or /f reported errors found. Running with /r just got it stuck. I decided to give fsck a shot, so I loaded up my Kubuntu VM and attached the drive to it with VirtualBox's USB 2.0 passthrough. I umounted it (/dev/sda1) and ran a fsck. There are differences between boot sector and its backup. I chose No action. It told me FATs differ and asked me to select either the first or second FAT. Whichever I selected, I got a notice of Free cluster summary wrong. If I chose Correct, it gave a list of incorrect file names. To try to fix something, at least, I ran it with the -p option. Halfway through fixing the files, the VM froze - I ended its process about ten minutes later. Cause? My next attempt was to use YUMI, again, to rebuild the whole drive. I used YUMI's built in reformat (to FAT32) option and installed a Kubuntu ISO (700MB). The format was successful, however, the extract and copy of Kubuntu (which YUMI uses a 7zip binary for) froze at about 60% done. After waiting for about fifteen minutes (longer than the 3.5GB Knoppix ISO took last time), I pulled the drive out. The drive at this point was already formatted, SYSLINUX already installed, just waiting on the unpacking of an ISO and the modifying of the boot menus. Plugging it back in, it came up as normal - however, any write action would fail. Disk management reported it as read only. On reconnect, it would come up as normal but a write operation would cause it to go read only again. After a few attempts, it started coming up as read only on insertion. Attempts to fix This is when I ran through the attempts listed above, to try and reformat it in case of a faulty format. However the inability to do so even on a bootable disk indicated something more serious is wrong. chkdsk now reports nothing is wrong, and fsck still reports MBR inconsistencies, but now always chooses first FAT automatically after telling me FATs differ. It still does the same Free cluster summary wrong afterwards. I cannot run with -p anymore because it is now marked as read only. It also managed to corrupt my VM's disk somehow on the first attempt (yes, I'm sure I chose sda, which is mapped to a 7.4GB drive - I triple checked). Thank god for snapshots? I'm just about out of ideas. To my inexperienced mind it looks like something in the drive's firmware set it to read only "permanently" somehow - is there any way to reset this? I don't particularly care about keeping data, considering I've reformatted it twice. Also, fixes that keep me in Windows are better; it reduces the risk of me accidentally nuking my main hard drive. Update 1: I pulled apart the drive out of curiosity. As you can see, there are no obvious write protect switches. There is an IC on the other side, ALCOR branded labelled AU6989HL, if that matters. If there appears to be no way to fix this, I'll probably pull out the (glued down) card and put it in a card reader to check if it's the card or the controller that died. Update 2: I've pulled the card off, Windows detects the drive as a card reader now. The contacts on the card don't appear to be used, and there are several rows of holes on the card itself. Putting it into the card reader only detects about 30MB total, RAW. It's probably either the reader incorrectly reporting the card as faulty (as if a real SD card's write protect was switched on) or a bad contact somewhere. If nothing else, I have a spare 8GB Micro SD card now... as soon as I figure out how to format it as 8GB.

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• Separate log files for each web application and shared libraries with log4j

  - by oo_olo_oo

  I have few web applications run on the Tomcat server. Each application contains its own log4j library copy inside its own war. This allows for separate, flexible logging configuration per application. I also have few shared libraries (kept in Tomcat's shared libraries directory). I would like to have shared library loggers output among with the application (which uses them) loggers output (for example: if application A logs to file a.log, and uses library b.jar, I would like b.jar to log also to the a.log file). The problem is, that the shared libraries are loaded by the shared classloader, which causes that they can't access loggers defined by the applications. Is there any solution for this issue?

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• Accessing 2D array and passing string to label.text

  - by Amir

  Hi. I'm trying to create 2D array and initialize it with NSStrings. When I try to copy content of a cell from the array to a label.text, the application crashes. NSMutableArray *array = [NSMutableArray arrayWithCapacity:0]; [array addObject:[NSMutableArray arrayWithObjects: [NSArray arrayWithObjects: @"0-0", @"0-1", @"0-2", nil], [NSArray arrayWithObjects: @"1-0", @"1-1", @"1-2", nil], [NSArray arrayWithObjects: @"2-0", @"2-1", @"2-2", nil], nil]]; label.text = [[array objectAtIndex:0] objectAtIndex:0]; Any idea why and what am I doing wrong?

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• Increasing coverage with try-except-finally and a context-manager

  - by Daan Timmer

  This is the flow that I have in my program 277: try: 278: with open(r"c:\afile.txt", "w") as aFile: ...: pass # write data 329: except IOError as ex: ...: print ex 332: finally: 333: if os.path.exists(r"c:\afile.txt"): 334: shutil.copy(r"c:\afile.txt", r"c:\dest.txt") I've got all paths covered except for from line 278 to line 333 I got a normal happy-flow. I stubbed __builtin__.open to raise IOError when the open is called with said file name But how do I go from 278 to 333. Is this even possible? Additional information: - using coverage.py 3.4 (only listing 3.5, we can't currently upgrade to 3.5)

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• Graceful degradation on iPhone

  - by Seva Alekseyev

  How do I write a program for iPhone (Objective C++) that runs on OS 2.0 but takes advantage of 3.0 features if they're available? Example: copy&paste (class UIPasteboard). Nice feature to have, but I don't want to kill backward compatibility. Do I compile against SDK v. 3 or v. 2? If the latter, how do I create an instance of UIPasteboard, considering it's not declared in the headers? If the former, won't some C-linkage functions cause "unresolved reference" upon loading under OS 2.0?

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• VS2010, VSS and post-commit hook?

  - by David Lively

  I'm using Visual Studio 2010 and VSS. Yes, I know VSS sucks. Hard. I'm attempting to force a move to TFS (since SVN integration with Expression and Sharepoint Designer is near impossible without forcing non-technical content managers to use TortoiseSVN), but that will not happen in the short term. I'm working with a local copy of the (classic ASP 3.0) site, and need to publish individual files to a web folder on our dev server whenever I check in a file so that the changes can be seen by other interested parties without having to publish from VSS. Does anyone know of a convenient way to add a post-commit script with VSS? It's acceptable for this script to run on my dev box (as opposed to the server), considering that VSS has no server to execute such actions.

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• Any suggestions on data syncronization from a server to a desktop?

  - by Jamey McElveen

  I have a web based CRM system that stores all the client data from all the clients into one database (MS Sql Server). We need to build a system that maintains a local copy of the data for each client. So basically the client database will have all tables and columns except for the ClientId that is in ever server table. I am aware that I will need to add fields to the server to support synchronization. Are there any good solutions or components already out there to help me accomplish this? We are using MS Sql Server and .NET C#

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• Java program strange behavior, how to fix it ?

  - by Frank

  My notebook has Intel CPU, running Windows Vista. My program looks like this : public class Tool_Lib_Simple { public static void main(String[] args) { System.out.println("123"); } } When I run it, I expect to see : "123", but the output was : "Hi NM : How are you NM ?" which was the old output from two days ago before I changed my program. If I copy this program into another project in Netbean 6.7, it will run correctly and output "123", and if I change the program name from "Tool_Lib_Simple" to something else, it will also output "123", but just not under the name of "Tool_Lib_Simple" in the current project's src directory, I've deleted the "build" directory and did re-compile, re-build, it still gives me "Hi NM : How are you NM ?" as a result, seems to me the old version of my program is saved in the hard drive or ram and got stuck there, I've programmed many years, hardly ever encounter this kind of problem, how to fix this ? Frank

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