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• Redirect outbound traffic on port 53 to port 5300 with iptables

  - by Zagorax

  I'm running a local dns server on port 5300 to develop a software. I need my machine to use that dns but I wasn't able to tell /etc/resolv.conf to check on a different port. I searched a bit on google and I didn't find a solution. I set 127.0.0.1 as nameserver on /etc/resolv.conf. Could you please tell me how can I redirect outbound traffic on port 53 to another port? I tried the following but it didn't work: iptable -t nat -A PREROUTING -p tcp --dport 53 -j DNAT --to 127.0.0.1:5300 iptable -t nat -A PREROUTING -p udp --dport 53 -j DNAT --to 127.0.0.1:5300

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• Moving sprite from one vector to the other

  - by user2002495

  I'm developing a game where enemy can shoot bullets towards the player. I'm using 2 vector that is normalized later to determine where the bullets will go. Here is the code where enemy shoots: private void UpdateCommonBullet(GameTime gt) { foreach (CommonEnemyBullet ceb in bulletList) { ceb.pos += ceb.direction * 1.5f * (float)gt.ElapsedGameTime.TotalSeconds; if (ceb.pos.Y >= 600) ceb.hasFired = false; } for (int i = 0; i < bulletList.Count; i++) { if (!bulletList[i].hasFired) { bulletList.RemoveAt(i); i--; } } } And here is where i get the direction (in the constructor of the bullet): direction = Global.currentPos - this.pos; direction.Normalize(); Global.currentPos is a Vector2 where currently player is located, and is updated eveytime the player moves. This all works fine except that the bullet won't go to player's location. Instead, it tends goes to the "far right" of the player's position. I think it might be the problem where the bullet (this.pos in the direction) is created (at the position of the enemy). But I found no solution of it, please help me.

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• Data structure for grid with negative indeces

  - by The Secret Imbecile

  Sorry if this is an insultingly obvious concept, but it's something I haven't done before and I've been unable to find any material discussing the best way to approach it. I'm wondering what's the best data structure for holding a 2D grid of unknown size. The grid has integer coordinates (x,y), and will have negative indices in both directions. So, what is the best way to hold this grid? I'm programming in c# currently, so I can't have negative array indices. My initial thought was to have class with 4 separate arrays for (+x,+y),(+x,-y),(-x,+y), and (-x,-y). This seems to be a valid way to implement the grid, but it does seem like I'm over-engineering the solution, and array resizing will be a headache. Another idea was to keep track of the center-point of the array and set that as the topological (0,0), however I would have the issue of having to do a shift to every element of the grid when repeatedly adding to the top-left of the grid, which would be similar to grid resizing though in all likelihood more frequent. Thoughts?

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• What's an alternative to using public folders (in Outlook)?

  - by Ivo Flipse

  My colleagues abuse our mail servers public folders to store (old) emails so that everyone can read them using IMAP. I'm looking into good alternatives after reading this Tech Republic article: "10 reasons why you should begin phasing out Exchange public folders" The most important thing they need is access to emails from multiple computers without overloading our network. So do you have any suggestions for alternatives? If there's a nice combination with some CRM system it would be interesting too. Note: this doesn't have to be freeware, usability and efficiency are more important. The solution has to be Windows 32 bit only

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• Restricting server.log file size (minecraft) in CentOS

  - by MisdartedPenguin

  I'm currently running a bukkit (minecraft) server which generates a server.log file with all the console messages / errors. Every now and then I have a plugin (which i need) that crashes and can cause the server.log file size to increase dramatically. I've had it hit 32GB before which used all my disk space. Is there a way to make it a rolling log (deletes old errors) or be able to limit the file size so it can't go above say 10MB. But the solution needs to not affect how the server runs so it doesn't throw an error when it can't write anymore. Anyway of doing this with CentOS?

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• How to redirect a specific url through a proxy for multiple services?

  - by CrystalFire

  I have a website hosted on 000webhost.com for free. I am unable to connect directly to the site because Comcast has blocked a portion of 000webhost's servers for free accounts due to other people hosting malicious content. In order to maintain my website, I cannot use my computer to directly connect to the server. I am wondering if there is a way by which I can specifically forward attempts to access the server through a proxy, transparently. The current system that I am on is Windows, but I also have systems running Mac OSX and Linux, so solutions for any system could be fine. I've found answers which work for http, but I'm looking for a solution which will let me use all the other functions as well, such as ftp and ssh.

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• Dynamic object creation with HashMap

  - by Salor

  I want to use a HashMap to dynamically create objects based on the key. I have a Random Map Generator that stores the maps in 3D Arrays of Type Integer[][][]. Upon creation of the actual map I iterate through this array and based on the Integer I want to create the right block. Example: Integer[][][] map ... map[6][6][6] = 3; 3 is a Earth-Block and now I want to initialize a new Block of this type and give it the right coordinates. Currently I store my Bindings from Integer to Class in a HashMap(Integer, String) and create my objects like that: int id = array[x][y][z]; String block_name = Blocks.map.get(id); Block block = (Block) Class.forName(block_name).newInstance(); block.setPosition(x,y,z); But I want to avoid newInstance() if possible. I've never worked that dynamically with Java before and I couldn't find a solution like changing the HashMap to (Integer, Class) or something. I just need to create a new Object based upon the Integer. Any ideas/solutions? Thanks in advance and have a wonderful day!

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• knowing all available entity types

  - by plofplof

  I'm making a game where at some point the game will create enemies of random types. Each type of enemy available is defined on its own class derived from an enemy superclass. To do this, obviously the different types of enemies should be known. This is what I have thought of: Just make a list manually. Very simple to do, but I don't like it because I'll be adding more enemy types over time, so any time I add a new class I have to remember to update this (same if I remove an enemy). I would like some kind of auto-updating list. A completely component based system. There are no different classes for each enemy, but definitions of enemies in some file where all enemy types can be found. I really don't need that level of complexity for my game. I'm still using a component based model to some degree, but each Enemy type gets defined on its own class. Java Annotation processing. Give each enemy subclass an annotation like @EnemyType("whatever"), then code an annotation processor that writes in a file all available enemy types. Any time a new class is added the file gets updated after compilation.This gives me a feeling of failure even if its a good solution, it's very dependant on Java, so it means I cant think of a general design good for any kind of language. Also I think that this would be too much work for something so simple. I would like to see comments on these ideas and other possible solutions Thanks

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• BIND: How do I allow DNS query from specific external host?

  - by krbvroc1

  I'm running Centos 5.8 (bind 9.3.6). Here is my issue... I run my own DNS server to serve the local machine. I would like to use my DNS server from home. Since my home is a dynamic IP address, I am not sure how this would be accomplished. In my named.conf, there is an allow-query{} and allow-recursion{}. It seems both of those take an IP address, but i need to specify a hostname (at least a cname). This is not a public DNS server (so any is not an option). My hostname/cname is already updated automatically using nsupdate. The only solution I can think of, which I do not like, is to change my nsupdate script to somehow modify the named.conf to search/replace the allow-query/recursion IP address. That would require restarting named whenever the hostname changes as well as Is there some other way to handle this?

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• Temporarily disable window snapping in xfce4

  - by icyrock.com

  I'm using Xubuntu 12.04 and I can move windows by pressing Alt and then dragging a window. I have window snapping enabled via xfce4-settings-manager (Window Manager / Advanced tab / Snap windows to screen border). I like the snapping feature in general, however sometimes it gets in the way. Is there a way to temporarily disable snapping while doing this? Obviously I can open the settings manager, disable, move, enable, but I'm looking for a less intrusive solution, especially if there's something built in already (e.g. pressing Shift in addition to Alt to disable snapping or something along these lines) or a plugin of some sorts.

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• Problem creating sitecollection when database attached has been deleted

  - by pkspt

  Hi, I created one new sitecollection in new contentdatabase but later i changed my mind and decided to create it in the same database as of the webapplication. I deleted the sitecollection I created through newdatabase and bt now when I am creating that site again its getting attached to the new database which got created above not the same one? Any solution for that I tried deleting database which got created after deleting site collection. Now, when I when I am trying to create a site its looking for old database and giving me error as its not able to open it. Any suggestions on this one..?

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• Windows 7 startup repair with Truecrypt

  - by PHLiGHT

  I have many computers encrypted with Truecrypt 7.1a (current version) with the whole drive encrypted. Today one of them shows the Windows 7 splash screen for a moment and then goes into startup repair which can't read the encrypted drive. I've tried the various safe modes and what not. The solution is to decrypt the drive and then run startup repair to fix the drive. The problem is that is going to take 50 hours. I've started that process for this situation but I need to have a way to cover myself when this happens to the next PC. What can I do to avoid decrypting the whole drive? I can't be the only one facing this problem so I feel like I must be missing something. Thanks!

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• Command-line tool to search for file names on offline backup drives

  - by halloleo

  I am looking for an open-source (command-line) tool to register and search all my (backup) drives on a file name level. I want to search for file and folder names preferably written as regular expressions or file glob patterns. The external drives contain just normal HFS and NTFS filesystems. The backups are done via direct file copy. Requirement is that the tool compiles on OS X and works without each of the drives attached, but rather pointing me to the drive in case a drive contains a file with the pattern I searched for. At the moment I use a hand-knit script solution with locate databases, one for each external backup drive, but this is rather cumbersome, because locate itself can accesses only one database at a time and does not contain any management system for all the indices/databases. Are there any other tools out there for this?

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• cygwin ssh shortcut on windows desktop

  - by Alex Berkoff

  I have multiple servers that I need to remote into. I prefer Cygwin over Putty to do so. Anyhows - the process of opening my cool Mintty window and then typing the following commands takes too long. PS - I am using a "key" authentication to these servers. First, I double Click Cygwin Terminal shortcut from my windows desktop. Then once the terminal session has booted up, from the command prompt I type the following - $ eval `ssh-agent` $ ssh-add $ ssh <username>@<servername> Please keep in mind that my 'servername' is variable. In fact I have about 10 different server names that could potentially be inserted there - Hence my need for 10 different shortcuts. I would prefer to double click on something from my desktop that will fire up my Mintty and automatically execute the above bash shell commands. Does anyone have or can recommend a nice/elegant solution to do this?

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• Dumb Terminals, Virtual Desktop

  - by user67714

  I need some help in setting up a dumb-terminal type concept for Windows machines. We have a computer lab with 40 computers, all of them are ageing. Unfortunately, we don't have enough funds to get all of them replaced. On the other side, we have very powerful rack servers which are quite underutilized. I was thinking of a solution which would enable those lab computers to use the rack servers. Remote desktop is an option, but I wanted something that is more transparent to the end user. Are there any free or low cost solutions for such an scenario?? Thanks

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• How Export Result of MySQL Query on PHPMyAdmin 3.4.3?

  - by grape

  1) I've got a 30K row table. 2) When I run a long, 50-line query on that table, a GROUP function reduces the number of rows to 7K. 3) I want to export the grouped 7K rows as a new table, or save them as a CSV. When I attempt to export, instead of getting the grouped 7K rows, I get the old, pre-query 30K rows. What am I doing wrong, and what should I be doing? NOTE: I'm not a coder, so I'd really appreciate a solution that just used the PHPMyAdmin GUI. Thanks!

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• Encrypt ONE system directory?

  - by acidzombie24

  I dont want to encrypt my whole hard drive. But one app i ENJOY using stores my password in a not so secure way in the AppData folder. I would like to encrypt the folder. One note is the folder is inside my user/name directory. Maybe that will help or hinder the solution. I am fine with encrypting all of AppData if necessary. However i prefer not to encrypt C:\Users\NAME\ since it is heavily used by many apps. C:\Users\NAME\AppData\Local\APPNAME

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• ASP.Net MVC 3: multiple versions of the site without changing of URL, is it possible?

  - by Seacat

  Our website is written in ASP.NET MVC 3 and we want to change a feature in the core functionality of the site. The problem is not every client can be moved to this new version/format (because of some technical inner restrictions) so it means that we need to keep 2 versions of the same functionality (backend and frontend) simultaneously. We don't want our clients to worry about URLs, so the ideal solution would be keep the same URL but redirect clients to the different versions. The information about clients is stored in database. So the moment when user (client) logs in we know which version of site we should show. I'm thinking about routing and areas but I'm not sure if it's possible for example to have 2 areas with the different versions of the same application. Or is it possible to load the assemblies on the fly? After user is logged in we can decide if (s)he should be redirected to the new or old version. As far as all the clients have been moved to the new version we don't need this system more. How can I do this in ASP.NET MVC?

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• HP Presario CQ 61-322ER (VV884EA) Wi-Fi hang up! [closed]

  - by qgrabber

  Possible Duplicate: HP Presario CQ 61-322ER (VV884EA) Wi-Fi hang up! I have my new laptop and don't have Windows XP drivers for it. I found that it contains the Broadcom BCM4310 chip, but when I install any Broadcom driver my laptop hangup on installing bcm5*.sys driver. Only power-off button make any effect. After reboot the device list (Device Manager) contains Broadcom WLAN adapter, but it is marked as disabled, for some hardware errror! Also if I disable device before, and install driver - then - all is OK! But when I try to enable it, Windows hang up anyway (no speaker beep, no mouse input, no keyboard input - nothing) What is the solution?

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• Good free way to clone a hard drive or a partition and send the image over the network (through FTP, Windows file sharing, "anything")?

  - by Deleted

  What I ideally would like is a free software solution which can: Boot from a CD/DVD/USB-stick and Clone a complete hard drive or a partition and Send the resulting image file over the network through Windows file sharing (SMB, I could use SAMBA on my server to receive the image) or through FTP or through SFTP or through SCP It should work with Linux and Windows file-systems (where specific file system support is necessary) Is there anything good out there like this? I know Wikipedia lists a lot of cloning software. But I'm looking for a personal recommendation which you have used yourself, as I find it more credible (I'll see from the upvotes if the answer is liked by a lot of visitors).

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• ubuntu 10.04 span window across workspaces

  - by jakerman999

  I'm using an old server machine as a linux box desktop, and as such I have a lot of power but not a lot of display options. I cannot increase my resolution past 800x600 and recently this has become just to small. I have mostly been able to workaround windows being to large for a workspace by moving them with the alt key, but I would like to use something a little more versatile. My plan is to have a setup where I can open a windows (say firefox) on the top-left workspace and then resize it so that it fills four workspaces in an emulated "wall of monitors" fashion. I already have my workspaces arranged like this, but I am not seeing any options for allowing programs/windows to exist on more than one workspace at a time, I know that what I am trying to accomplish is possible (or was at some point in time) because when I google my solution pages appear with people trying to do the opposite (windows already appear on more than one workspace and they dislike it). Any help is much appreciated.

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• Postfix + LDAP + Recipient Delimiter

  - by Coops

  I'm trying to get my Postfix and LDAP-backend to accept recipent delimiters (aka address extensions). The rest of the mail system is working fine, but when an email is received with an extension (e.g. [email protected]), it tries to look up "coops+test" against the LDAP service and fails. Obviously this is wrong, and it should strip out the "+test" part. In my postfix config the string being passed to the LDAP service is "%s", per an example line below: accounts_query_filter = (&(objectClass=MailAccount)(mail=%s)(accountActive=TRUE)(delete=FALSE)) Is there a postfix variable which represents the email account minus the extension? I've found a similar post here, but no actual solution.

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• Separate update and render

  - by NSAddict

  I'm programming a simple Snake in Java. I'm a complete newbie when it comes to Java and Game Developing, so please bear with me ;) Until now, I have been using a UI thread, as well as a update-thread. The update thread just set the position, set the GameObjects, and so on. I didn't think much of concurrency, but now I've come to a problem. I wanted to modify the ArrayList<GameObject>, but it throws a java.util.ConcurrentModificationException. With a little research I found out that this happens because the two threads are trying to access the variables at the same time. But I didn't really find a way to prevent this. I thought about copying the array and swapping them out when the rendering is finished, but I would have to deep-copy them, which isn't really the best solution in my opinion. It probably eats up more CPU resources than a single-threaded game. Are there any other ways to prevent this? Thanks a lot for your help!

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• C# calendar needs Business Logic for real-time reminders? [on hold]

  - by lazfish

  I am not a super experienced C# user, though I have some experience in .Net and VB.Net. Just got this new job and my first assignment is a mission critical part of the business. It is pretty important I get it right so I was hoping for some sage advice. We have created a calendar using jQuery, C#, .Net & SQL Server 08. The calendar works but now we are wanting to add email, SMS and voice-call reminders. We are a small company and can do whatever we need to do with no restrictions on our IT environment. I have some base-line experience with Unix servers but would prefer to stay in the Micro$oft universe if it is prudent to do so. I know how to add the API calls and services to initiate these reminders (using built in email services for email and Twilio.com for SMS). I am asking for advice about how to approach a reliable and timely listener service that knows when to call the service or API for the reminder before an appointment. EG. SMS: "You have a conference call in 30 minutes." I have done some research, but it is hard to know what is a proven reliable approach. What I am looking for is an experienced opinion on a good (or the best) strategy for implementing a solution that will reliably listen for appointments and dispatch the reminders when needed.

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• svn client timeout on windows 7 64 bit

  - by nopuck4you

  I upgraded my PC to Windows 7 64 bit Home Premium - clean install. Since then I've tried to install the following SVN clients: Tortois 1.6.6 64bit and 32bit, Tortois 1.6.5 64bit, SlikSVN, SmartSVN, and a couple others. None of them will connect to ANY remote SVN repository. Note: Everything works correctly when I plug in my old Vista HD with Tortoise 1.6.6 client installed. Therefore, I do not suspect the network per se. I've seen some posts around with people running into similar issues on Windows 7 64bit but I've yet to see an actual answer/solution to the problem.

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