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• OpenVPN and Squid Setup troubleshooting

  - by Adam

  I am trying to setup squid to tunnel via openvpn so that I can just enter an Ip and port in my browser settings and use it as a US proxy. My server is a OpenVZ VM. Running into some issues: I setup openvpn using : http://safesrv.net/install-openvpn-on-centos/ as part of that guide I also ran: iptables -t nat -A POSTROUTING -o venet0 -j SNAT --to-source iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -j SNAT --to-source Installed squid using this guide: http://www.server-world.info/en/note?os=CentOS_6&p=squid from that guide changed acl lan src 10.0.0.0/24 to acl lan src 10.8.0.0/24 Next, I went to my browser proxy settings and put - 10.8.0.1 in the HTTP field. Put the port I had setup in the squid config file and tried to load a page. Nothing connecting. Any help? What am I doing wrong?

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• some questions related to ubuntu app showdown

  - by user49557

  Where to ask questions related to ubuntu app developer showdown? http://askubuntu.com/questions/151148/how-do-i-participate-in-the-ubuntu-app-showdown Can I use old code by myself to build on for my entry in the Ubuntu App Showdown contest? after seeing these threads and posting a question at askubuntu where to ask questions related to ubuntu app showdown i got we can ask these questions here my questions: can i submit more than one app in the contest and tell me more about this suppose i submit 5 apps out of which one is won then will it be valid if 2 or 3 are won i think the number of t-shirts does not depends upon number of apps one per person for development i have to use quickly but can i use third party libraries for GUI or other work i think i will need it for eg. pyside the first and second winner will get laptop + mobile too right or not the mobile how the prizes will be delivered will they charge(i don't think so) i would like to use multiple libraries i can use htme right ? more details are always welcomes i have mostly all ubuntu app showdown related pages but if you find something in background than tell me note:i am not saying that i am going to win just questions don't take it in that way

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• Java and Sendmail HELO requires domain address

  - by ealgestorm

  I am trying to set up emailing from a java web application hosted on a linux server (Cent OS) in apache. Sendmail is working fine from the command line as root on localhost but when trying to send emails from the java web app (also on the same server from localhost) the following java exception is thrown. 501 5.0.0 HELO requires domain address EDIT: I have read that some people have found this is due to an incorrect hosts entry currently the hosts file contains 127.0.0.1 Centos-VPS localhost.localdomain localhost and i'm not sure what the Centos-VPS bit at the start is for but this is a clients hosted server so don't really want to break stuff EDIT see the RFC is helpful ... 501 Syntax error in parameters or arguments Now I know what the problem is! (note the sarcasm people.)

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• Software Architecture: How to divide work to a network of computers?

  - by Morpork

  Imagine a scenario as follows: Lets say you have a central computer which generates a lot of data. This data must go through some processing, which unfortunately takes longer than to generate. In order for the processing to catch up with real time, we plug in more slave computers. Further, we must take into account the possibility of slaves dropping out of the network mid-job as well as additional slaves being added. The central computer should ensure that all jobs are finished to its satisfaction, and that jobs dropped by a slave are retasked to another. The main question is: What approach should I use to achieve this? But perhaps the following would help me arrive at an answer: Is there a name or design pattern to what I am trying to do? What domain of knowledge do I need to achieve the goal of getting these computers to talk to each other? (eg. will a database, which I have some knowledge of, be enough or will this involve sockets, which I have yet to have knowledge of?) Are there any examples of such a system? The main question is a bit general so it would be good to have a starting point/reference point. Note I am assuming constraints of c++ and windows so solutions pointing in that direction would be appreciated.

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• Is it possible to cause email to my domain to be handled by gmail?

  - by pitosalas

  [This is a very narrow question, and I don't think it is covered in similar sounding questions] I want to configure my server's DNS so that when someone sends email to [email protected] it is actually deliver it to [email protected] Note: My question is whether this is possible to do ONLY with DNS not with myserver.com's own sendmail. I think the answer is "NO" it is not possible, because when I add an MX record to DNS the email that was delivered to gmail's SMPT server would be TO: [email protected] and it would not know that account. (But I hasten to add that I am just vaguely starting to grok how this all works.)

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• Windows XP Log In: Can't do it. Logon Message popup.

  - by kojobino

  A friend recommended this site to me. Hope you can help! I can't seem to log into Windows. I boot my computer. The log In screen appears. I put in my user name and password, hit OK, and the following message pops up: "The system could not log you on. Make sure your user name and domain name are correct, then type your password again. Letters in your passwords must be typed using the correct case". NOTE: I have tried Safe Mode and the same message pops up. Just to be clear, I am not able to get into Windows (I'm stressing this b/c I've come across some suggestions that require you to be in Windows, which doesn't help in my case). Thanks for your assistance. -Stranded in Toronto

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• MySQL Connector/Net 6.6 GA has been released

  - by fernando

  MySQL Connector/Net 6.6, a new version of the all-managed .NET driver for MySQL has been released.  This is the GA intended to introduce users to the new features in the release.  This release is feature complete. It is recommended for use in production environments. It is appropriate for use with MySQL server versions 5.0-5.6 It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.6 version of MySQL Connector/Net brings the following new features:   * Stored routine debugging   * Entity Framework 4.3 Code First support   * Pluggable authentication (now third parties can plug new authentications mechanisms into the driver).   * Full Visual Studio 2012 support: everything from Server Explorer to Intellisense&   the Stored Routine debugger. The release is available to download athttp://dev.mysql.com/downloads/connector/net/6.6.html Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.5/en/connector-net.html For specific topics: Stored Routine Debugger:http://dev.mysql.com/doc/refman/5.5/en/connector-net-visual-studio-debugger.html Authentication plugin:http://dev.mysql.com/doc/refman/5.5/en/connector-net-programming-authentication-user-plugin.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows. You can also post questions on our forums at http://forums.mysql.com/. Enjoy and thanks for the support! 

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• jQuery - upgrade from version 1.6.x to 1.7

  - by Renso

  Goal: Issues to consider when upgrading from jQuery version 1.6 to 1.7. This is a short list and may help identify the real issues you need to concern yourself with in stead of reading through all the release notesSummary of issues encountered during upgrade:As you prepare for upgrade to jQuery 1.7 from 1.6.x, this is a quick glimpse of all the issues that are relevant, not sure if it covers all but may be all you need to worry about.Use this method only for checking checkboxes and radio buttons:$("input:checked")http://api.jquery.com/checked-selector/This will work regardless of the version of jQuery you are using. Note that $("input).attr("checked") returns true prior to jQuery 1.6. Only retrieve "real" attributes with "attr", in order versions it would also retrieve properties like "tagName", this no longer works with jQuery 1.6.1+Why does $("input").attr("checked") no longer (from version 1.6.1+) return TRUE or FALSE, because if you look at the HTML (as well as W3C spec) it does not contain a true/false, but the value checked="checked", which is what it should have returned in the first place. $("input").prop("checked") works, return true, because there is in fact a DOM property for "checked" with the value being "true" or "false".Furthermore, if you want to upgrade to jQuery 1.7 you should only have to worry about this for most part:1. isNumeric() is new, be careful as the older version jQuery.isNaN() has been deprecated2. jqXHR success and error have been deprecated3. When rendering content with text(), white space issue cross-browsers: http://bugs.jquery.com/ticket/3144Other than the issues above I am not aware of any deprecations you need to worry about.Hope this helps to get everyone up to version 1.7

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• How do I get my XFX Radeon HD 7870 to work with 3 monitors using HDMI, DVI, and Mini DisplayPort?

  - by user88792

  I bought a XFX Double D FX-787A-CDFC Radeon HD 7870 and set it up using the HDMI, DVI and Mini DisplayPort (using an Apple mDP-to-VGA adapter). I hooked it up, installed the drivers and rebooted. The image came up on the third monitor in a weird resolution. Why did this happen and how can I fix it? I am using Windows 7 Ultimate and the system is completely updated. Side note: When I disconnect the Mini DisplayPort adapter it works fine, however for my work I need 3-4 monitors.

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• I bought a new battery and Ubuntu 12.10 isn't recognizing it

  - by user134403

  I inherited my mom's old laptop and installed Ubuntu over top of Vista, so now it is purely Ubuntu. Her old battery only lasted about 10 minutes, so it had to be plugged in all the time, which I didn't like. So I bought a battery, and inserted it in when it came. The laptop doesn't see it at at all- no battery icon whatsoever. I can pull it out and put the old battery in and it recognizes it. The new battery comes with a program (a .exe) to update the bios to accommodate the new battery... But don't have Windows anymore and Wine gives me an error when I try to run it, so I am at a loss of ideas. I thought of running a virtual machine of Windows to install it, or run a Windows To Go drive(a new feature of Windows 8), but I don't think those are good ideas as they may not work or permanently ruin something. I am not an extremely experienced user of Ubuntu/Linux, so I don't where to go from here. I'm running Ubuntu 12.10 on a Sony Vaio VGN-NR, if that helps. Also note that I just installed Ubuntu the other day and have nothing important on the pc yet, so I am not afraid to reinstall Ubuntu if it may help. Thanks!

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• How to perform a nested mount when using chroot?

  - by user55542

  Note that this question is prompted by the circumstances detailed by me (as Xl1NntniNH7F) in http://www.linuxquestions.org/questions/linux-desktop-74/boot-failure-upon-updating-e2fsprogs-in-ubuntu-10-10-a-947328/. Thus if you could address the underlying cause of the boot failure, I would very much appreciate it. I'm trying to replicate the environment in my ubuntu installation (where the home folder is on a separate partition) in order to run make uninstall. I'm using a live cd. How to mount a dir in one partition (sda2, mounted in ubuntu as the home folder) into a directory on another mounted partition (sda3)? I did chroot /mnt/sda2 but I don't know how to mount sda3 to /home, and my various attempts didn't work. As I am unfamiliar with chroot, my approach could be wrong, so it would be great if you could suggest what I should do, given my circumstances.

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• Where are the Record Volume Controls in Windows 7?

  - by DJbigJack

  Windows XP (and previous versions) had a Record Volume Control panel that could be used to select between music inputs (Stereo Mix, Wav, etc) and a microphone. There doesn't seem to be an equivalent capability in Windows 7 . Is there a third party application that provides this functionality? Note: the Windows XP Record Volume Control was accessed by doubleclicking the Speaker icon in the system try which displayed the (Listen) Volume Control. In the menu there was a "properties" which gave you the option of displaying the RECORD Volume Control instead. I used this capabiliy in Win XP to select the required inputs for an Internet Radio Station and now with Win 7, I can't do it any longer

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• Apache timeouts and error log

  - by BlackFire27

  I have an error whenever I run my code for a certain time. I use a lot of loops and sql connections. I basically, put and take out links from my database. The problem is that there is some error thrown that I cant see, whenever I execute a long sql operation .. Note that the fault isnt the code. The code runs well, whenever there are a few links involved. But when there are over 200 links.. an error is thrown that I cants see. I tried to trace the error in a few places: C:\Program Files\Zend\ZendServer\logs\php_error.log C:\Program Files\Zend\phpMyAdmin\config.inc.php Edit Viewer in win xp I am running XP: Windows xp php version: 5.3.9-ZS5.6.0. Apache/2.2.21 Apacher version: (Win32) mod_ssl/2.2.21 OpenSSL/0.9.8o I cant trace the error at all, and why it happens. All I can suspect of, is that there is a server timeout..

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• How to monitor RAM usage for Hyper-V VMs ?

  - by Mac

  A bit of context first : on Windows 2008 Standard x64 with 8Gb RAM, I have 5 VMs running which should take up 1664Mb RAM (3*256Mb+384Mb+512Mb). There is nothing else running on this server except the basic OS components (this not a Core installation). I know that each VM will use more RAM on the host than what has been configured in Hyper-V. But when I run the task manager, it says 6.7Gb used ! If I sum up the RAM used by each process in the task manager (showing all users processes), I get to something around 1Gb... So : how can I check how much RAM each VM is really using on the host (it does not seem to be available via task manager) ? Note that I am aware of the fact that my problem could be unrelated to VM RAM usage, but I would still very much like to know how to do this.

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• Dependency Injection: where to store dependencies used by only one method?

  - by simoneL

  I developing a project integrated with Dependency Injection (just for reference, I'm using Unity). The problem is that I have some Manager classes with several methods and in many cases I have dependencies used only in one method. public class UserManager : IUserManager { private UserRepository UserRepository {get;set;} private TeamRepository TeamRepository {get;set;} private CacheRepository CacheRepository {get;set;} private WorkgroupRepository WorkgroupRepository {get;set;} public UserManager(UserRepository userRepository, TeamRepository teamRepository, CacheRepository cacheRepository , WorkgroupRepository workgroupRepository, ... // Many other dependencies ) { UserRepository = userRepository; TeamRepository = teamRepository; CacheRepository = cacheRepository ; WorkgroupRepository = workgroupRepository; ... // Setting the remaining dependencies } public void GetLatestUser(){ // Uses only UserRepository } public void GetUsersByTeam(int teamID){ // Uses only TeamRepository } public void GetUserHistory(){ // Uses only CacheRepository } public void GetUsersByWorkgroup(int workgroupID){ // Uses only workgroupRepository } } The UserManager is instantiated in this way: DependencyFactory<IUserManager>(); Note: DependencyFactory is just a wrapper to simplify the access to the UnityContainer Is it OK to have classes like that in the example? Is there a better way to implement avoiding to instantiate all the unnecessary dependencies?

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• Computer won't stay powered up

  - by Android

  I have just tried to turn my PC on this morning and it won't stay powered up. It will come on as normal for about 5 seconds, not quite long enough for the monitor to wake up. Then it will power off. After about 2 seconds it will start again, it will continue like this until I pull out the plug. Plugging it in again doesn't restart the cycle although pressing the power button does. I have tried to clear the cmos but beyond that I have no ideas. It was working perfectly when I put it in hibernate last night. NOTE: I am using a Dell Optiplex 755 UPDATE 1: I took out the motherboard battery and it almost came on then it displays the message Error loading Operating System UPDATE 2: After taking out the custom video card, it says "No hard drive present"

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• PHP hosting some info required [closed]

  - by mtk

  I have recently given a control of newly bought hosting space and the domain account. There is a technical team from the hosting site to help out with problems, but that is a long process, i.e. log a ticket, wait for a long time, and I don't get the correct answer in the first shot. I was wondering, if anyone has any helpful guide and how one must go with hosting a site. Any info that must be know w.r.t to cpanel? Any other useful stuff if any one has, or could point me to ? Just to give a few difficulties: The same php code working well on local machine, giving error on remote as "File not found". The file is present indeed as I have ftp'ed all the files correctly. session_start error are outputted to html page with warning "Header already sent". and many more technical things, that work well on local but not on actual hosting server. So, if anyone has any helpful stuff in this reference, as to what all changes are required or what a programmer must be aware from a hosting perspective, please let me know. Note I am hosting a PHP site with mysql db, on a shared environment.

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• MOD_REWRITE not creating correct path

  - by Bill

  SO I am trying to setup a RewriteRule on my server for caching static objects. the files are in this naming scheme /docroot/css/stylesheet.min.css and I have them printed in the code like /docroot/css/stylesheet.min.123438348.css (the number is example it comes from a get modified function). Note docroot is an example directory how can I have the server ignore the numbers and redirect to the stylesheet.min.css I need to do this for every css and js files (/js and /css) as well as one specific spritemap image my current attempt RewriteRule ^/(docroot)/(js|css)/(.+).(min).(.+).(js|css)$ /$1/$2/$3.$4.$6 RewriteRule ^(/docroot/images/spritemap).([0-9]+).(png)$ $1.$3 Update: Now I have the setup like this RewriteEngine on Options FollowSymLinks RewriteRule ^(.+).(min).([0-9]+).(js|css)$ $1.$2.$4 [L] This is rewriting localhost/docroot/css/stylesheet.min.12343242.css to /var/www/html/docroot/trunk/docroot/css/stylesheet.min.css so it is getting the right file how do I get apache to take off the beginning of the that the /var/www/html/docroot/trunk/

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• Remotely initiate windows updates

  - by TetraFlash

  I have a network with countless workstations on it and the windows updates are done through WSUS in push cycles to allow us to use a generic image and configuration and avoid network congestion. I have a number of workstations in storage that are connected once a month for a few days to recieve updates, however not all of them fall within their push cycle. I want to avoid going to each machine and clicking "check updates" as that would require me to connect a monitor, mouse and keyboard. Is there a way (preferably through powershell but im open minded) to initiate a check and install of updates on a remote system? Lets say for 1 system at a time right now, I can add a file reader and a look later. NOTE: the configuration of the WSUS server is above my pay grade, im simply being asked to ensure these machines are updated. Thanks for any help or hints

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• How to avoid being fooled

  - by Dacav

  I'm a big fan of the OpenSource development model, and I think that sharing information, knowledge and ideas is the best way of working in software development. Still I think that being hired for proprietary software development must not be demonized. Of course, as there's a no reward in terms of sharing there must be a bigger reward in terms of money (i.e. I surrender all my rights for cash). It may happen that one gets hired piecework, for a single project: in this case one is more vulnerable to dishonest employers. This didn't happen to me personally, but some friends of mine had bad experiences, and lost a lot of time without being fairly retributed. Of course a contract should protect both parts. But contracts can be very generic in the specification. Software is not anything but a palpable good! Besides I don't think that contracts can distinguish between a well written software and a poorly written one. Note also that, in this (nasty) spirit, it's also likely that the employer cannot trust the employee! So also the employer should be protected by a dishonest employee). My question is the following: Which is, in your opinion, a good way of avoiding this kind of situation from the technical perspective?

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• Can I extend my total RAM by buying more, and what kind do I need to buy

  - by Xeon06

  I currently have 4 GB total RAM and I would like to get some more, to bring it to a total of 8 GB. Is it possible to simply buy another 4 GB and bring it to 8? If so, what kind should I be buying? There is a lot of different possibilities, DDR3, DDR2, clock speed, etc. I am kind of lost among all this. My current setup goes like this: ACER EG43M mainboard Intel(R) Core(TM)2 Quad CPU Q8200 @ 2.33GHz 4 total RAM slots, 2 occupied by 2 GB sticks According to CPU-Z, my memory type is DDR3 (not sure how reliable that is) Full CPU-Z dump Windows 7 64-bit So basically, I want to know whether it's possible to extend my current RAM to get 8 GB total by buying another 4, and if so, what kind of RAM do I need? Note that I am not looking for shopping recommendations. I'm worried about the hardware compatibility.

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• Windows 8: Multiple monitors with varying DPI? [closed]

  - by Sid

  Possible Duplicate: Dual monitors on Windows - How do I set a different DPI or text size on each monitor? I'm running Windows 8 on my Macbook Pro Retina (220dpi) which has an external 24" monitor (~96 dpi). In Mac OS 10.8.2, the display settings seem ok and I can actually use both displays without usability issues. I don't know what scaling settings etc it uses but it looks fine. On Windows 8, however when I boost the DPI settings to take advantage of the retina display, it blows up the display on the external monitor - text is giant sized. How can I tell Windows 8 to use the real DPI settings of each monitor? NOTE: I'm not asking for Windows 7.

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• Is there a Linux mail server with an outgoing pickup directory?

  - by Paul D'Ambra

  On my Exchange server I can drop appropriately formatted text files in the "pickup" directory and Exchange will process them. I'd like to split this bulk mailing functionality onto another box to protect our business mail IP from the bumpy ride that our monthly newsletter gives us. I should note at this point that the mailing is opt-in with an opt out link included and only goes to people who pay to be a member of our organisation The ideal solution for me would be to add a linux box to use just for this purpose so we're not paying for Exchange licenses. So is there a linux equivalent of the Exchange pickup directory?

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• Is there a Linux mail server with an outgoing pickup directory?

  - by Paul D'Ambra

  On my Exchange server I can drop appropriately formatted text files in the "pickup" directory and Exchange will process them. I'd like to split this bulk mailing functionality onto another box to protect our business mail IP from the bumpy ride that our monthly newsletter gives us. I should note at this point that the mailing is opt-in with an opt out link included and only goes to people who pay to be a member of our organisation The ideal solution for me would be to add a linux box to use just for this purpose so we're not paying for Exchange licenses. So is there a linux equivalent of the Exchange pickup directory?

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• Why won't Webmaster Tools let me set a preferred domain? (says to verify, but it should already be)

  - by Su'

  I've got a domain that I apparently forgot to set a preferred domain for, so I just tried to do it. Webmaster Tools instead popped up a little box: Part of the process of setting a preferred domain is to verify that you own http://www.example.com/. Please verify http://www.example.com/. I'm running into some problems following these instructions: As far as I can tell I already did verify sometime in the past. There's a TXT DNS record with the gibberish Google tells you to set for it that I couldn't have come up with myself. …and nothing is telling me this information is bad. So let's assume the site is somehow not actually verified. All the various methods' instructions start with "click the Manage Site button next to the site you want, and then click Verify this site." That button doesn't even exist on my screens. (It presumably goes away when you successfully verify?) Those instructions were all updated pretty recently, and the DNS one in particular just a couple weeks ago so it seems a bit unlikely they're inaccurate. I am not using Apps, and won't be, so can't try out the verification through there. Note that I also have another domain that I have not done any verification for which is showing the same behavior(no such button, being told to verify when it seems impossible etc.) so something appears to just be broken. I already have a no-www process in place server-side, so we can skip that. I'm just trying to get the box checked off in GWT. If I don't get any resolution, I'll eventually scrap the TXT record and see if the site gets un-verified(or whatever since it thinks it isn't), and see if I can just restart the process. It's not urgent so I'm just trying to figure out if I've gone blind to something or what. Did the button move?

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