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• how to monitor traffic at port 53 (DNS)

  - by Registered User

  I am a bit confused with the abundant tcpdump tutorials on internet. I am having a few of the virtual machines running on a virtualization server.Where I am debugging a problem.Port 53 is the one in problem. I have a bridged setup where out of 4 LAN cards on the machine in question one is active and it is xen-br0 I want to check if there is any request coming on port 53 on the server by other machines on LAN in question. I also want to see if the guest operating systems on LAN or any other machine is sending traffic at port 53.Due to abundant messages being generated via tcpdump I am finding it difficult to grep the output at desired port. So how can I use it if some one can give an example that would be helpful. Thanks in advance.

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• Where to create/keep secret files for license information/trials on Windows/Mac OS X/Linux?

  - by BastiBense

  I'm writing a commercial product which uses a simple registration mechanism and allows the user to use the application for a demo period before purchasing. My application must somewhere store the registration information (if entered) and/or the date of the first launch to calculate if the user is still within the demo/trail period. While I'm pretty much finished with the registration mechanism itself, I now have to find a good way to store the registration information on the user's disk. The most obvious idea would be to store the trial period in the preferences file, but since user tend to delete/tinker with those from time to time, it might be a good idea to keep the registration information in a separate, more hidden file. So here's my question: What is the best place/strategy to keep and create such hidden files on Windows, Mac OS X and Linux? Here is what came to my mind so far: Linux/Mac OS X Most Unix-like systems are rather locked down when it comes to places a user can write files to. In most cases this is only the /tmp directory and the user's home directory. I guess the easiest here is probably to create a file with a dot-prefix to make it less visible, then give it a name that won't make it obvious that it's associated with my application. Windows Probably much like Linux/Mac OS X - more recent Windows versions become more restrictive when it comes to file system permissions. Anyway, I'd like to hear your ideas and thoughs. Even better if you have already implemented something similar in the past. Thanks! Update For me the places for such files is more relevant than the discussion of the question if this way for copy protection is good or bad.

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• Can TFS 2010 be installed onto a single server and in a Workgroup (not AD)

  - by Pure.Krome

  Hi folks, currently, we're using TFS2010 at our office and we're about to move. Part of that move is a split of teams. Our team will get their own servers. So we need to build our own TFS server and add our current projects to that. Right now, our TFS server exists on TWO servers - one for TFS and one for our Continuous Integration .. i think that's a build controller or something. That really suxs for us - having TWO servers instead of one for all our source control. We love CI and how it works (after the massive massive pain it was to get our VS2010 solution to CI + web Deploy) ... but it does work. So - can we do this with ONE server? Also, we don't want to have an Active Directory. Will this also work?

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• How to get the earliest checkout-able revision info from subversion?

  - by zhongshu

  I want to check a svn url and to get the earliest revision, then checkout it, I don't want to use HEAD because I will compare the earliest revision to others. so I use "svn info" to get the "Last Changed Rev" for the url like this: D:\Project>svn info svn://.../branches/.../path Path: ... URL: svn://.../branches/.../path Repository Root: svn://yt-file-srv/ Repository UUID: 9ed5ffd7-7585-a14e-96b2-4aab7121bb21 Revision: 2400 Node Kind: directory Last Changed Author: xxx Last Changed Rev: 2396 Last Changed Date: 2010-03-12 09:31:52 +0800 but, I found the 2396 revision is not checkout-able, because this path is in a branch copied from trunk, and the 2396 is the revision modified in the trunk. so when I use svn checkout -r 2396, I will get a working copy for the path in the trunk, then I can not do checkin for the branch. D:\Project>svn checkout svn://.../branches/.../path -r 2396 workcopy ..... ..... D:\Project>svn info workcopy Path: workcopy URL: svn://.../trunk/.../path Repository Root: svn://yt-file-srv/ Repository UUID: 9ed5ffd7-7585-a14e-96b2-4aab7121bb21 Revision: 2396 Node Kind: directory Schedule: normal Last Changed Author: xxx Last Changed Rev: 2396 Last Changed Date: 2010-03-12 09:31:52 +0800 So, my question is how to get a checkout-able revision for the branch path, for this example, I want to get 2397 (because 2397 is the revision which copy occur). And I know "svn log" can get the info, but "svn log" output maybe very long and parse it will be difficult than "svn info". I just want know which revision is the earliest checkout-able revision for the path.

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• Spammers sending out from an inactive domain

  - by YesIWillFixYourEmailSigh

  We have a shared hosting service running QMail and Plesk. One of our inactive clients was left active in the system by mistake, and spammers found their very weak passwords and sent out a massive barrage of messages before we caught the problem and shut off the services for that domain. My question is this: How did they get access to that domain in the first place? The client is long-gone and the domain/DNS is not pointing at our server at all, and neither is the MX record. So how were they able to find that domain and exploit it when nothing on the "outside" was pointing to it?

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• How to create a Service Connection Point for Exchange (Manually)

  - by Ionoxx

  I'm being cautious here. Before I remove anything I want to be able to put it back. I'm having issues with a domain joined computer that is using SCP to get exchange autodiscovery information. It's getting information for the now unused internal Exchange through SCP even through the profile is using Office 365 on another domain. According to this conversation, I can simply remove the object from Active Directory Sites and Services. I want to know how to add back in should this create more problems, or if we reinstate the Exchange server. Right clicking on the parent "autodiscover" node doesn't allow me to create a Service Connection Point. Will simply running the cmdlet "Set-ClientAccessServer -identity servername -AutodiscoverServiceInternalUri url" be enough to recreate the object? Thank you!

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• Simple Oracle File repository with folder hierarchy

  - by Ope

  I have an application that stores large amount of files (XML and binary) in folder hierarchies. Currently the main method is storing them in file system or using a legacy CMS, which we want to get rid of. The CMS supports Oracle and a customer wants to keep the files in Oracle because of enterprise policies (backup etc.) The question is: Is there a simple implementation of file repository with folder hierarchy for Oracle? What I am looking for is a small .Net component or example code (PL/SQL and/or .Net) that would have the following methods: Create, Delete, Exists Folder CRUD file Move and potentially Copy file or directory Access to files and folders with paths like "/root/folder1/folder2/file.xml" Ability to get all the files and folders in a folder and potentially also the entire directory tree Tree traversal, getting the parent, all children etc. needs to be fast. I need the implementation in .Net, but if it was just the stored procedures, I could create the .Net calling code. I have pointers to generic articles for creating hierarchies in DB, so if I need to do it from scratch, I know where to start. What I am asking here, is there already an implementation that I could take without doing this from scratch? It seems like such a generic requirement... If the answer is a CMS, Document management system or such it should be Open Source or at least quite cheap (some hundreds / server) and it should be possible to deploy it XCopy - hopefully only couple of DLL:s. I do not need - or want - a full featured big CMS with dozens of dlls and especially not an msi-installation. I have tried to google this, but the words "repository", "CMS", "file hierarchy" etc. give so many answers, the searches are pretty much useless. Thanks, OPe

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• How to remove permanent map of a network drive on OS X Lion?

  - by Flijfi

  Some time ago I mapped a network drive on my Snow Leopard Mac, which was upgraded to Lion. The network drive is not active any more and I receive popups all the time with the error: There was a problem connecting to the server XXXX. I have no idea how I configured at the time. I may have included a mount command, in a config file but I don't know any more where I did it. I reviewed the Preferences/Account/Login items and there is no permanent mapping there. OSX is updated as Nov 27,2011 and the issue is not related to the upgrade to Lion itself but to a misconfiguration. Any help will be greatly appreciated. (If you have the opposite problem, here is the link to solve it: Permanently map a network drive on Mac OS X Leopard)

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• displaying a physical webpage with frames in iframe

  - by ksa

  i have iframe in my webpage, i have done the coding part for browsing the folders and viewing files in iframe.each folder has a index.html.now i need to display the index.html in iframe.index.html page contains frames divided into 2,each from different sources.i tried to display a sample webpage without frames and it was a success,page with frames spoils the party. my code for getting the html file <% String path=request.getParameter("name"); File directory = new File(path); FileFilter fileFilter=new FileFilter() { @Override public boolean accept(File file) { return file.getName().endsWith("html"); } }; File[] files = directory.listFiles(fileFilter); for (int index = 0; index < files.length; index++) { String s= files[index].getName(); String s1=files[index].getAbsolutePath(); %> <a href="fileview?name=<%=s1%>" target="sss"><%=s%></a> <% } %> mycode for displaying the page in iframe. public void doGet(HttpServletRequest req,HttpServletResponse res) throws ServletException,IOException { res.setContentType("text/html"); PrintWriter out=res.getWriter(); String name=req.getParameter("name"); res.setHeader("Content-Disposition", "inline; filename=\""+name+"\""); java.io.FileInputStream fis=new java.io.FileInputStream(name); int i; while((i=fis.read())!=-1) { out.write(i); } fis.close(); out.close(); }

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• "Missing operating system" even when booting from Linux Live CD: hardware problem?

  - by contextfree

  My parents' computer stopped booting from the HDD into Windows: it's showing a "Missing operating system" error. I tried burning a Live CD of the latest Ubuntu and booting from that, but it's giving me the same error. I know the Live CD works (I can boot my laptop from it). It does seem to be actually trying to boot from the CD (when I boot with the CD in it takes longer to get to the error message than if I boot with the CD out, or if I change the BIOS boot order to skip the CD drive; and the CD drive light is active during that time). Might this be a hardware problem? Are there common problems I can look for that might cause this?

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• How to enable Integrated Load Balancing in Windows 8

  - by intodevelopment

  One of the cool new features many sites mention is "Integrated Load Balancing" in Windows 8. It is supposed to do the following: If you have multiple active network connections, Windows 8 will intelligently balance the network traffic between them for performance Source: Short: Some of what Microsoft didn’t show of Windows 8 I would love to see this feature in action. I am connected to a WiFi access point and to a different network by cable. Yet I don't see the operating system 'intelligently' balance the network load when for instance downloading multiple files. Is there any way to enable it or should I adjust my expectations?

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• Bootstrap toggleable tag

  - by user1869816

  I am a newbies to bootstrap. I have tried to play with the code to make a page with toggleable tag. However, I have checked my code for many times but I still can't find the problem in my code. Would anyone help me, please? <div class="row"> <div class="tabbable"> <ul class="nav nav-tabs" id="tabs" data-tabs="tabs"> <li class="active"><a href="#having_a" data-toggle="tab">Having a</a></li> <li><a href="#having_b" data-toggle="tab">Having b</a></li> <li><a href="#having_c" data-toggle="tab">Having c</a></li> </ul> <!-- content of the tab --> <div class="tab-content" id="tab-content"> <div class="tab-pane active" id="having_a"> <p>a</p> </div> <div class="tab-pane" id="having_b"> <p>b</p> </div> <div class="tab-pane" id="having_c"> <p>c</p> </div> </div> </div> <script type="text/javascript"> jQuery(document).ready(function ($) {$('#tabs').tab(); }); </script> </div> <hr> <footer> <p>&copy;2012</p> </footer> </div> <!-- /container --> <!-- Le javascript ================================================== --> <!-- Placed at the end of the document so the pages load faster --> <script src="js/jquery.js"></script> <script src="js/bootstrap-transition.js"></script> <script src="js/bootstrap-alert.js"></script> <script src="js/bootstrap-modal.js"></script> <script src="js/bootstrap-dropdown.js"></script> <script src="js/bootstrap-scrollspy.js"></script> <script src="js/bootstrap-tab.js"></script> <script src="js/bootstrap-tooltip.js"></script> <script src="js/bootstrap-popover.js"></script> <script src="js/bootstrap-button.js"></script> <script src="js/bootstrap-collapse.js"></script> <script src="js/bootstrap-carousel.js"></script>

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• Data Integration Solution?

  - by Shlomo

  At my company we have a number of data feeds and processing that run on any given day. The number of feeds and processing steps is starting to out-number the ability to manage it ad-hoc as it is managed currently. Is there a good solution that helps with logging and managing/scheduling dependencies? For example: A: When file x is FTP dropped into directory D1, kick off processing step B B: Load flat file into DB1 C: When file y is FTP dropped into directory D2, kick off processing Step D D: Load flat file into DB11 E: When B and D are done, churn through the data, and load new data into DB111. F: When Step E is done, launch application process P G: etc... I want those steps to run at the appropriate times, not to mention if B fails, there's no reason to run steps E & F, but I could still run C & D. When I re-run B successfully, it should trigger just E & F to re-run, not C & D. We're a .NET/C#/Sql Server shop, and I'm already familiar with SSIS. Is that really the best there is? That manages steps well, but not external dependencies, or logging. Open source (.NET) preferred, but not required.

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• Scalable way to store files on server (PHP)?

  - by Nathaniel Bennett

  I'm creating my first web application - a really simplistic online text editor. What I need to do is find the best way to store text based files - a lot of them. These text files can be past 10,000 words in size (text words not computer words.) in essence I want the text documents to be limitless in size. I was thinking about storing the text files in my MySQL database - but thought there was a better way. Instead I'm planing on storing the text files in XML based format in a directory on my server. The rows in the database define the name of the xml based text file and the user who created the text along with basic metadata. An ID is generated using a V4 GUID generator , which gives the text an id and stores the text in the "/store" directory on my server. The text definitions in my server contain this id, and the android app I'm developing gets the contents of the text file by retrieving the text definition and then downloading the text to the local device using the GUID in the text definition. I just think this is a botch job? how can I improve this system? There has been cases of GUID colliding. I don't want this to happen. A "slim" possibility isn't good enough - I need to make sure there is absolutely no chance in a GUID collision. I was planning on checking the database for texts that have the same id before storing the text with a particular id - I however believe with over 20,000 pieces of text in my database this would take an long time and produce unneeded stress on the server. How can I make GUID safe? What happens when a GUID collides? The server backend is going to be written in PHP.

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• View Webserver Form Internal and Extenal

  - by Just4Net

  We have a web server hosted out of our office, and it works fine when people access the site from outside the office. The problem is that when people are inside the office and go to the website (www.example.com) it's very slow, as it goes out over the internet and comes back in. Or LAN is Windows with Active Directory and our web server is CentOS with its own internet connection. How can I set when users in my office want see website opens it from local network instead of going out of one internet connection and back in through the other?

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• How do I check if a program can potentially be a virus?

  - by acidzombie24

  I am running Windows XP in a VM. I want to download a few applications and install the one by one and check if they potentially can be a virus. I assume virus would need to add something to the startup folder, or the application in the startup section in the registry or add a service. What else might it do to become active? Anyway, how can I check to see if a program may be a virus? I use hijack this to get a list of processes and I simply compare it from before I installed to after and see if there's anything different. Is this good enough? My main OS is Windows 7 but I do not have that in a VM and don't see a reason to test with that.

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• Configuring visual subversion to exclude

  - by douglasrahn

  I have been searching for any documentation on how to exclude files for visual svn but have not found any. All the documentation I find seems to not match my file structure or I am missing some files/directories referenced. For example the only file I find with configuration items in it seems to be completely commented out and missing the miscellaneous section as well as any auto properties enable - etc... Ultimately I need to exclude some files so that my development can continue without SVN errors. I am constantly receiving errors for pbuser and other project files and would like to make sure this is not causing some of my other headaches. Here is information I would love to use but cant as it doesnt match: How to “fix” Subversion in XCode 3 Posted on December 10, 2008 by Rodney Aiglstorfer in Xcode If you don’t take the necessary steps to prepare for subversion, you will run into problems using it in XCode. This is because XCode produces files that “confuse” Subversion because it either thinks they are text files when they are really binary files or the reverse. To overcome these limitations, you need to make some simple changes to the subversion configuration file in your user home directory. Here are some steps you can follow to ensure that you will be able to use Subversion within XCode without any issues. Step 1. Open the subversion configuration file ~/.subversion/config NOTE: If the “.subversion” directory doesn’t exist yet then run this command which fails but will create the necessary files to get you started: svn status Step 2. Enable “global-ignores” and add new things to ignore Find the line that contains the text “global-ignores” and append the following text: build *~.nib *.so *.pbxuser *.mode* *.perspective* What I am looking for really is how to exclude the files I know I need to for Visual subversion - it shouldnt be different really from regular svn as it claims to use the same product just places a gui on it.

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• How to fix a Corrupted USB

  - by Help

  My USB stick has suddenly stopped working. It's a Busbi 4GB. My USB used to be G:/ but as soon as I plugged it in, I used to get a pop up box showing that it was plugged in. Now, when I plug this in, it shows as I:/ and no pop up box appears. It shows in my computer as I:/ and when I click to open it says I:/ is not accessible the disk structure is corrupted and unreadable. I have tried to change the file name back to G:/ but nothing happened (this was under disk management). On disk management, it shows Volume as I:/ Layout simple Type Basic File system RAW status Healthy (Active,Primary partition) Capacity 3.42GB. I've tried right clicking properties then the tab tools and click error checking (this option will check the volume for errors). When I click "check now" it comes up with the disk check could not be performed because Windows cannot access the disk.

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• Make Thunderbird3 not switch to firefox after clicking a link.

  - by WebDevHobo

  Using ThunderBird 3 on Windows 7. When I get a mail with a link, I usually click it, if I know what it's about. Sadly, Thunderbird switches to Firefox which is opening the new tab. I'm active on several forums and get several of these messages per day. I don't want to click a link, be forced into firefox, go back to thunderbird, click a link, be forced into Firefox, etc... Is there an option to disable this? If not, I can see myself quitting Thunderbird altogheter and simply using web-based email checking instead of using an app.

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• mod_rewrite [L] flag not working as expected?

  - by bobobobo

  I thought the [L] flag indicated that "this rule should be the last rule processed for this http request.." However when I have 2 rules like: RewriteRule ^test$ php/test.php [L] RewriteRule (.*) error.php What always happens is requests to http://localhost/test go to error.php, not to test.php as I expected, since I put the [L] there. If you comment out the second rule there, then requests to http://localhost/test go to test.php as expected. What I'm really trying to do is catch 404 errors with mod_rewrite. Its possible what I'm trying to do is just plain wrong. But I still want to know why the catch-all rule is active since I did put an [L] after the ^test rule. I see a large listing in here where the server admin lists a bunch of paths that begin with the recognized directories, but I wanted to avoid doing this by simply using a nice catch-all rule.

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• Rails app Hangs and Ruby uses 100% CPU

  - by tuzzolotron

  I have an apache2 server running Phusion Passenger. On this machine I have two virtual hosts setup each look like this (path's are different for the 2nd virtualhost...but other directives are the same) ServerName beta.mysite.us DocumentRoot "/var/www/beta/mysite/public" <Directory "/var/www/beta/mysite/public"> RewriteEngine on AllowOverride All Options FollowSymLinks </Directory> # http://www.modrails.com/documentation/Users guide.html PassengerAppRoot "/var/www/beta/mysite" RailsEnv development PassengerMaxPoolSize 6 PassengerDefaultUser mysite # PassengerHighPerformance does come at a trade off of lack of support for mod_rewrite PassengerHighPerformance off RailsSpawnMethod conservative RailsFrameworkSpawnerIdleTime 0 RailsAppSpawnerIdleTime 0 PassengerPoolIdleTime 300 ErrorLog "/var/log/httpd/mysite-beta-error_log" CustomLog "/var/log/httpd/mysite-beta-access_log" common Apache starts fine. I can go to one of the virtualhosts and it will load Rails and work. When I go to the second virtualhost, a ruby process spawns ("Rails: /var/www/mysite/current" according to ps awuxf) and uses 100% CPU. This process never exits. At this point neither virtualhost is responsive. If I kill the the offending ruby process, another ruby process replaces it and uses 100% cpu. If I kill these processes about 5-6 times, then both virtualhosts respond but they, are somehow, running the same Rails app?! I have another virtualhost on this machine that is not setup with phusion passenger..This one never exhibits any problems. Any help / ideas would be much appreciated!

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• A "quick" vector editor (SVG) for Linux (for annotating images?)

  - by sdaau

  I often need to take a bitmap (.png) image, and draw some lines or text on top of it, and possibly export a new, thusly "annotated" image. I know I can basically do all this in inkscape - but inkscape is a complex program, and it needs almost a minute to start up properly on my PCs. So I was thinking - is there something like a "mini" vector editor for Linux, which would start up fast, and allow me to: Right-click, open an image in this editor program The program scales the active "document"/"window size" to the size of the image I can zoom in/zoom out (and possibly crop) the image I can add at least lines, boxes and text in different colors? A bonus for me would be to have the overlay graphics saved as SVG format, say with the same filename as the image - as in, "image.png.svg" being saved in the same directory where the original "image.png" is located (thus allowing opening and editing these "annotations" further, either in this editor, or possibly in inkscape). And another bonus would be the export of the annotated image to a bitmap. Anyone know about anything like this?

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• What could slow Excel on one PC but not another?

  - by zrz

  I have 2 PC with the same configuration. I open an Excel File (~5M) on the network from both PC. The opening is not the fastest but that's ok. The problem is that on one PC, Excel is really slow. I mean if I hit the left arrow 10 times, I will have finished hitting like 3 seconds before the active cell is the next 10th one. The file contains graphics that takes time to initialize on the slowed computer. Both PC have the same graphic cards, same driver version; both remote access to the file on a local network. Both configured to perform calculations automatically. Both Excel 2007. Both Windows 32bit. On the other PC it runs really fast. I really don't know what to check next. Any suggestions ?

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• Does a HDMI-to-DVI (dual link) adapter exist? I don't care about the price

  - by alex k

  My monitor supports full-resolution display (2560x1440) only when connected to through either the DVI-D dual link port, or the DisplayPort. My laptop, though, has neither of these two kinds of output. Instead, all it's got is a HDMI port (which is version 1.3, and I also read that the laptop's graphics chipset supports 2560x1440 at 60Hz). So I'm wondering whether anyone has ever seen an HDMI-to-DVI dual link adapter, which will carry my ultra-highres signal to the monitor I just bought. So far I haven't seen any, and don't even know whether such an adapter (which I understand would have to be active, USB-powered and expensive (but I don't care)) exists.

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• C#:Getting all image files in folder

  - by Meko

  Hi all. I am trying to get all images from folder but ,this folder also include sub folders. like /photos/person1/ and /photos/person2/ .I can get photos in folder like path= System.IO.Directory.GetCurrentDirectory() + "/photo/" + groupNO + "/"; public List<String> GetImagesPath(String folderName) { DirectoryInfo Folder; FileInfo[] Images; Folder = new DirectoryInfo(folderName); Images = Folder.GetFiles(); List<String> imagesList = new List<String>(); for (int i = 0; i < Images.Length; i++) { imagesList.Add(String.Format(@"{0}/{1}", folderName, Images[i].Name)); // Console.WriteLine(String.Format(@"{0}/{1}", folderName, Images[i].Name)); } return imagesList; } But how can I get all photos in all sub folders? I mean I want to get all photos in /photo/ directory at once.

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