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• Ping myself, works with ipv6 not ipv4 in Windows 7

  - by user68546

  Hi! I've tried to solve the following problem with no luck and I need some proffesional help. The following is possible: Ping all computers (that I tried) in the domain without problem. Ping myself with localhost which use ::1. Ping myself with my given ipv6 IP. Internet access. The following is not possible: Noone can ping me (request timeout) with computername/ipv4/ipv6. I cannot ping myself with my given ipv4 IP or 127.0.0.1 (request timeout). Tried to enable/disable TCP/IPv4. Same issue. Turned off windows firewall. Added an inbound rule to allow icmp (just in case). Same same.. Is there someone out there that has any idea what the issue could be? Any help would be most appreciated!

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• After reboot allocated node gets commissioned again

  - by cloudfan

  i had set up a maas with juju and deployed Openstack into it for testing. During my vacation i shut down all computers. Afterwards i started at first the maas server, then the node where juju was bootstrapped and juju-gui was deployed to. Sadly the node got commissioned again and so all my deployments are gone. I decomissioned the according node from the maas and bootstrapped it again. Afterwards i tested again juju bootstrapping the node, shutting down both nodes and starting them in the same order again. The Juju node gets commisioned again. After bootstrapping everything looked fine in the MAAS GUI (node was set to allocated to root, which was also the case after the restart) and also the JUJU GUI was available and juju status worked fine. Before my vacation i also had some other nodes deployed through juju. They all seem to be still available and have not been commisioned again. Do you have any ideas what might have happened? Is there any issue with a bootstrapped juju node and the commisioning? Any help or hints on what i could check are appreciated! Thank in advance for your help!

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• Can I take a HDD in Raid1 and plug it straight into a different machine?

  - by jacko

  I would assume that I can just take my HDD out of my NAS (in raid1 mirror) and plug it into another enclosure and have it work off the bat but I'd like to make sure... Any ideas? Edit: My current setup is a Netgear ReadyNAS in (hardware) raid1. I'm hoping to replace this with a home theatre type PC (possibly running Ubuntu), and would like to migrate my data without having to do a bulk transfer over my network between the 2 machines. Can anyone confirm the case for the Netgear ReadyNAS?

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• vim + Ruby on Rails: how do you bounce among those 4-5 files you're currently working on?

  - by glitch

  I'm just starting to get familiar with vim, and I'd like to use it as my primary Rails development tool. As a Visual Studio and RubyMine user, I find a lot of stuff to be missing from the barebones vim installation, and therefore I went ahead and attempted to soup it up with plugins such as: rails.vim tcomment ruby-vim NERDtree and a couple of others. The issue is that I still don't quite get the average work-flow of using vim as one's Rails IDE. In RubyMine (again, similarly to Visual Studio) I have a series of tabs always open, containing the main files I'm switching among, and I additionally use NERDtree to open files from the folder structure. I tried opening them as new tabs, but the tab system in vim is just a lot more awkward than that in real IDEs. (I haven't seen vim pros in action, but I imagine that they'd not be relying on tabs, but using numerous splits instead, keeping at least a couple of files per split and switching between them with CTRL + ^. Is that the case?) So, at the end of the day, how do I really squeeze the most from vim if I want to be able to quickly access several files at once? Thank you!

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• Is NVIDIA GeForce GTX 480 Video Card Compatbile with a Mac Pro Running Windows 7 Pro 64?

  - by aquat33nfan

  I have a Mac Pro (early 2008) and I'm running Windows 7 Pro (64 bit) natively (i.e., with just Windows installed and no OSX or boot camp) on it. If I buy an NVIDIA GeForce GTX 480 video card, will it work or do I have to buy a card that is Mac-specific (e.g., GeForce GTX 285 'for Mac')? Also, more generally, will Windows video cards work on Intel Macs running Windows (in case I pick a cheaper card)? I can't tell if it matters that a Mac does not have a bios. I searched other boards and I gathered that video cards would work fine because Windows has the proper drivers for them and OSX doesn't and not having the BIOS doesn't make a difference. I found one thread on here that seemed to indicate that as well, but I wanted to make sure. Thanks.

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• remote desktop connection help?

  - by robin agrahari

  sir, i have created a web application in eclipse,db2 database server is running on my pc.so i can access the web application through the address http://localhost:8080/LimsWeb i used team viewer software to establish a remote desktop connection. can my friend somehow connect to my pc so that when he types the above url in his browser he will be able to fetch the pages of the application. i was able to do this by connecting with remote desktop mode.but in that case my friend was able to use the application which i created running on my pc only and in the window provided by team viewer.i want that he can run the application on his own computer calling the given url from his own browser. please help

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• Running SQL 2008 on a VM

  - by chris.w.mclean

  We are pondering trying to set up a SQL 2008 instance inside a VM for a production environment. All our SQL instances use iSCSI over gigabit ethernet to talk to a NAS, as would this new instance. Any reason this is a bad idea or any considerations to make this work well? The VM would be running in Xen 5.5 or we could set it up in Hyper-V if there's a compelling case for that. And the VM's VHD would be stored on a different NAS then the SQL storage is on.

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• How to set up custom 401 error page or redirect in WSS3 SP2

  - by Stacy Vicknair

  I've got a WSS3 sharepoint site that requires windows authentication both in IIS and via the Sharepoint site. What I would like to do is in the case that a user does not provide valid AD credentials they are redirected to a custom error page. Currently, if the user immediately hits cancel when prompthey will see a plain text response of "401 UNAUTHORIZED". If they make an attempt and then hit cancel they instead see a blank page. I have looked into several options such as customErrors, httpModule interception (only saw examples for this after the user is authenticated), IIS Url rewrites (didn't see how this could help). Is there a good way to do this?

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• Collision detection doesn't work for automated elements in XNA 4.0

  - by NDraskovic

  I have a really weird problem. I made a 3D simulator of an "assembly line" as a part of a college project. Among other things it needs to be able to detect when a box object passes in front of sensor. I tried to solve this by making a model of a laser and checking if the box collides with it. I had some problems with BoundingSpheres of models meshes so I simply create a BoundingSphere and place it in the same place as the model. I organized them into a list of BoundingSpheres called "spheres" and for each model I create one BoundingSphere. All models except the box are static, so the box object has its own BoundingSphere (not a member of the "spheres" list). I also implemented a picking algorithm that I use to start the movement. This is the code that checks for collision: if (spheres.Count != 0) { for (int i = 1; i < spheres.Count; i++) { if (spheres[i].Intersects(PickingRay) != null && Microsoft.Xna.Framework.Input.ButtonState.Pressed == Mouse.GetState().LeftButton) { start = true; break; } if (BoxSphere.Intersects(spheres[i]) && start) { MoveBox(0, false);//The MoveBox function receives the direction (0) and a bool value that dictates whether the box should move or not (false means stop) start = false; break; } if (start /*&& Microsoft.Xna.Framework.Input.ButtonState.Pressed == Mouse.GetState().LeftButton*/ && !BoxSphere.Intersects(spheres[i])) { MoveBox(0, true); break; } } The problem is this: When I use the mouse to move the box (the commented part in the third if condition) the collision works fine (I have another part of code that I removed to simplify my question - it calculates the "address" of the box, and by that number I know that the collision is correct). But when I comment it (like in this example) the box just passes trough the lasers and does not detect the collision (the idea is that the box stops at each laser and the user passes it forth by clicking on the appropriate "switch"). Can you see the problem? Please help, and if you need more informations I will try to give them. Thanks

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• Is there an image viewer which *won't* show every file in the current folder?

  - by hawbsl

  Looking for a Windows image viewer which can be started from the command line but which allows me to specify/restrict which files I want it to page through. As parameters. The good 'ol Windows Picture Viewer would be fine except that it'll show/cycle through all the pictures in the current folder. In my case I want to say something like: someimgvwr.exe "cat.jpg" "cow.jpg" "cub.jpg" so that only those three files will be displayed and not "pig.jpg" which might also happen to be there in the same folder. Actually, if it allowed something like this: someimgvwr.exe "c*.jpg" that would be even more perfect. Do any of the many image viewers that are out there allow such a thing?

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• What to do when you can not type a letter in Cygwin/bash

  - by Stenemo

  I had a very strange issue that happened as I was editing .bashrc or possible .profile, which made it impossible to press the letter "a" (it is not showing up on screen, although I am able to type it in all other programs as usual. I am not sure, but I was trying to get aliases to work on my computer at the time, so it is possible that I somehow aliased a to "", although I am not sure how that would have happened. I solved this by copying all the files in "cygwin\etc\skel\" (these are the backup starting files in case you ever need to replace them) into my home folder. Just leaving this question here so that other people which run into the same problem know what to do, not sure why I am unable to press "solve your question" at the moment, but I hope that someone who reads this knows how to edit this question so that the next person with this problem knows what to do. Also, not sure if this belongs in this forum or another one, but guess it is more of a unix question.

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• Backup of whole harddrive during full operation with Acronis True Image Home 2010

  - by testing

  Currently I'm creating a backup of one of my hard drives. It's my main hard drive, where the operating system is running on. Because the backup is done during full operation I'm asking me if the backup really includes all files (registry, ...). Can I restore the backup on another hard drive and then run the operating system again without problems? Normally I would say that you have to boot from a CD (without running OS) to make a backup. I made a Google research but I didn't found my case so far.

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• word 2010 Macro to name and Save file when opened

  - by Phillip Clark

  I have a word document template and will be using a hyper link in Excel to access the word file. The issue I need to resolve is making sure once it is opened a message field box is "popped" up asking the user to create a new file name ... (in this case the current date) for each time the file is opened. In the message pop when finished entering in file name they click yes and then the save screen comes up with the path/file type (macro enabled document) and the file name they have already entered in the pop up.. All they should have to do from the save screen is click ok and it saves the file to a certain path/folder on the C drive of the computer. Once they finish typing in their notes they click a active x button to save and close and they are finished. If anyone can help with this it would be fantastic.

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• Rejecting new HTTP requests when server reaches a certain throughput

  - by Sam

  I have a requirement to run an HTTP server that rejects new HTTP requests (with a 503, or similar) when the global transfer rate of current HTTP responses exceeds a certain level. For example, if the web server is transferring at 98Mbps, and a new HTTP request arrives, we would want to reject this (as we couldn't guarantee a good speed). I've had a look at mod_cband for Apache, limit_req for nginx, and lighttpd's rate limiting features, but none of them seem to handle my (rather contrived, granted) use case. I should add that I'm open to using pretty much any web server, and am open to implementing this in iptables rules if someone can craft such a rule! (Refusing the TCP connection is fine, it doesn't have to respond with an HTTP 503). Any suggestions?

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• Boundary conditions for testing

  - by Loggie

  Ok so in a programming test I was given the following question. Question 1 (1 mark) Spot the potential bug in this section of code: void Class::Update( float dt ) { totalTime += dt; if( totalTime == 3.0f ) { // Do state change m_State++; } } The multiple choice answers for this question were. a) It has a constant floating point number where it should have a named constant variable b) It may not change state with only an equality test c) You don't know what state you are changing to d) The class is named poorly I wrongly answered this with answer C. I eventually received feedback on the answers and the feedback for this question was Correct answer is a. This is about understanding correct boundary conditions for tests. The other answers are arguably valid points, but do not indicate a potential bug in the code. My question here is, what does this have to do with boundary conditions? My understanding of boundary conditions is checking that a value is within a certain range, which isn't the case here. Upon looking over the question, in my opinion, B should be the correct answer when considering the accuracy issues of using floating point values.

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• Custom LightDM sessions to launch an application

  - by zachtib

  I'm trying to set up Ubuntu to act as a kiosk running a custom application, and am trying to get a LightDM session built to automatically start it. Ideally, I'd like to have two sessions available from LightDM. The default would start my application fullscreened, and the other would open a minimal desktop in case any configuration (mostly connecting to a wireless network) needed to be done. I've done a lot of research over the last week on custom LightDM & Gnome sessions. I've got a custom greeter written for LightDM that can start either session, but I can't figure out how to add a specific application to the Gnome session that is ultimately started without just putting a launcher in the global startup directory, and I don't want to do that since I don't want the application starting when they open "configuration mode". Another problem I've run into on my current workaround is that the application doesn't fullscreen properly, which makes me think I'm not starting enough of a gnome session (currently it's just metacity, no panel or anything else). Edit: I found a solution. See http://www.webupd8.org/2011/11/make-applications-autostart-only-in.html

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• What video codecs have most amount of content and thus popular at present/in future?

  - by goldenmean

  Hi, I want to find out if I can get some data on the percentage wise distribution of video content, for different video codecs currently used for video encoding. I know there are different applications/use-case scenarios which have different encoder used but i want to consdier all that and have a overall usage number(%) My guess is(highest to lowest % of content) - H.264(AVC) DivX MPEG2 VP6 Where do H.263, MPEG4, VC-1, RV, Theora, etc. fit in here. How may this look like in future? PS:I would like this to be community wiki to have get wider range of inputs, if someone with privileges can do it for me please. thank you. -AD

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• using gmail to send mails from your php?

  - by ajsie

  i've read some threads here in SO that someone managed to use gmail's smtp server to send out messages from php script. so if php sends a mail to [email protected] it looks like this: php tells sendmail (smtp server) to send the message sendmail sends the message to gmail's smtp server gmail's smtp server sends the message to hotmail's smtp server so now i wonder, why should one use gmail's smtp server to send a mail? isn't it better just to send the message from sendmail to hotmail's smtp server? correct me if im wrong, but isnt all that requires for a mail to be sent a communication between TWO smtp servers, the senders and the receivers (in this case, hotmail)? and another question, why can't php just send the message directly to hotmail's smtp server, why does it have to go through a local smtp server? and why do you call it a smtp server when sendmail is just acting like a client to send a message and does not receive anything? would be great if someone could shed a light on this topic!

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• MySQL Unions/Subselects not utilizing keys from associated tables

  - by Brett

  I've noticed by doing EXPLAINs that when a MySQL union between two tables is used, mysql creates a temporary table, but the temp table does not use keys, so queries are slowed considerably. Here is an example: SELECT * FROM ( SELECT `part_number`, `part_manufacturer_clean`, `part_number_clean`, `part_heci`, `part_manufacturer`, `part_description` FROM `new_products` AS `a` UNION SELECT `part` as `part_number`, `manulower` as `part_manufacturer_clean`, `partdeluxe` as `part_number_clean`, `heci` as `part_heci`, `manu` as `part_manufacturer`, `description` as `part_description` FROM `warehouse` AS `b` ) AS `c` WHERE `part_manufacturer_clean` = 'adc' EXPLAIN yields this: id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL (NULL) (NULL) (NULL) (NULL) 17206 Using where 2 DERIVED a ALL (NULL) (NULL) (NULL) (NULL) 17743 3 UNION b ALL (NULL) (NULL) (NULL) (NULL) 5757 (NULL) UNION RESULT <union2,3> ALL (NULL) (NULL) (NULL) (NULL) (NULL) In this case, part_manufacturer_clean and manulower are keys in both tables. When I don't use the subselects and union, and just use one table, everything works fine. I'm not sure if the issue is with the union or with the subselects. Is there any way to union two tables and still use keys/indexes for performance?

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• As a programmer, what's the most valuable non-English (human) language to learn?

  - by Andrew M

  I was thinking that with my developer skills, learning new languages like French, German etc. might be easier for me now. I could setup the verbs as objects in Python and use dir(verb) to find its methods, tenses and stuff ;-) But seriously, if you're a professional developer, in my case in the UK, what's the best foreign language to learn from an employment perspective? I'm thinking, like Hindi - if all our programming jobs are getting outsourced to India, might as well position yourself to be the on-site, go-between guy. Mandarin - if the Chinese become the pre-eminent economy, the new USA, in ten or twenty years, then speaking their language would open up a huge market to you. Russian - maybe another major up-and-comer, but already closer to Western standards. More IT-sector growth here than anywhere else in the coming years? Japanese - drivers of global technology, being able to speak their language could give you a big competitive advantage over other Westerners But I'm just guessing/musing with all these points. If you have an opinion, or even better, some evidence, I'd like to hear it. If the programming things falls through then at least it'll make for more interesting holidays.

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• GillSans font doesn't show up in any applications

  - by roboknight

  I am running Ubuntu 10.04, Lucid Lynx, and I'm trying to add some fonts for use with Libre Office. In particular, I've placed a GillSans.ttc font file into /usr/share/fonts/truetype by copying it there with: sudo cp GillSans.ttc /usr/share/fonts/truetype and then attempting to "install" it by updating the font cache: sudo fc-cache -fv That appears to complete successfully, however, the font never seems to be available to either Libre Office, nor fontmatrix. In addition, I tried adding the font to my .fonts directory, thinking that I was somehow seeing a cache of just user supplied fonts, but that isn't the case. The file is a .ttc file, is there some other tools I need to use to extract each font from the .ttc, or is there something else I must do to use a .ttc? Nothing appears to have any issue with the file, but it could be silently failing to do anything. I've looked for the answer in other places, but the only time that a similar question was asked, it did not appear to be answered, so I figured I would ask the question differently and see if anyone else might be able to clue me in on how to use a .ttc font file, if that is possible. A related question, are there any tools to see what font families/font names are contained within a .ttc font file?

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• How do I configure the Google Chrome / Chromium address bar to perform a search instead of trying to access a file on the local file system?

  - by Daniel Kauffman

  How do I configure the Google Chrome / Chromium address bar to perform a search instead of trying to access a file on the local file system? I would like to be able to enter a file name in the address bar and to see Google search results for that file name similar to what I would see if I searched for the file name using something like https://www.google.com/#q=/path/to/interesting/file I am able to disable the file scheme using either of the following policy settings: "DisabledSchemes": ["file"], Which has been deprecated in favor of: "URLBlacklist": ["file://"], But in either case Google Chrome / Chromium continues to auto-detect that a file name was entered, automatically prepends the file scheme to the file name, and then reports that the webpage is blocked.

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• Why do certain replied emails missing threading when replied back in Mutt?

  - by yarun can

  I use Mutt for emails. I have threads enabled and I can see that most of the emails are threaded in Mutt. So that is all good. But sometimes I reply to an email and the answer(from other person) to my replied email wont be part of any threads. The thing is that when I reply in Mutt (which I use Vim to edit them), the subject parts keeps getting longer and longer with many "Re"s. That is the case with those emails with missing threads. I have: set strict_threads="yes" set sort="threads" set edit_headers=yes I am wondering if this has anything to do with Mutt or the person I am communicating over email. Could this one be the culprit? set metoo=yes Any suggestions?

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• what to do when ctrl-c can't kill a process?

  - by Dustin Boswell

  Ctrl-c doesn't always work to kill the current process (for instance, if that process is busy in certain network operations). In that case, you just see "^C" by your cursor, and can't do much else. What's the easiest way to force that process to die now without losing my terminal? Summary of answers below: Usually, you can Ctrl-z to put the process to sleep, and then do "kill -9 process-pid", where you find the process's pid with 'ps' and other tools. On Bash (and possibly other shells) you can do "kill -9 %1" (or '%N' in general) which is easier. If Ctrl-z doesn't work, you'll have to open another terminal and kill from there.

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• Extend university wifi network

  - by asfasdoiuh ouhouhouh

  i live in a university campus and i can get wifi signal on the outside of my window but not in the house. The solution i use at the moment is a usb wifi dongle outside connected to my laptop but the lack of an internal antenna make the connection quite unreliable at times. So i was trying to find another solution to improve the reception of my network. One idea is to setup a router on the outside (in a place with stronger signal) and redirect the connection inside the house with an ethernet cable but the problem is that our Uni Wifi is managed by a capitve portal (BlueSocket with DNS redirection to login page) and the authentication has to happen on the mac address that connect to the net (so the client appliance in this case). If I use a router with Mac-Clone capability i will be able to be redirected trough the captive portal on my laptop computer and login from there or i need to setup my router to fill in the login page by itself? There are other hardware/software solutions i can use to get what i want?

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