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• Is sudo dd taking too long to wipe hard drive?

  - by Adam133718

  I have a 200gb HDD which I removed from a macbook due to several corrupt files in startup. One thing led to another and I decided that I needed to format the drive. I used the command sudo dd if=/dev/zero of=/dev/sdb which is supposed to wipe everything off of the hard drive. It is my understanding that the command writes 0's over every bit on the drive, which I would imagine must take a while. The process has been going for about 18 hours now. I can use other functions of operating system like the web browser and I can even use another terminal window, so I know the system is not frozen. Should I restart the process or let it continue on? Any advice will help. Thanks. By the way, I already noticed a post similar to this that was previously answered though the user was not using the same command as I was.

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• Is it possible to use two different shells for different terminal windows?

  - by NES

  Is it possible to use another shell for scripts than for standard terminal use? The problem is, i use fish as shell at the moment and i find i very convenient. But i would like to learn a bit of shell programming in Ubuntu. Since there are differences between those two it would be nice, to work with fish and bash at the same time, perhaps in different terminal windows? i know i can write a shell script and have to put the interpreter in the beginning. But for testing developing at commandline i would find it useful to fast switch between shells or use two different terminal windows with different shells in one session at the same time?

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• What's the difference between "Service" and "/etc/init.d/"?

  - by Marco Ceppi

  I've been managing server installations both on and off Ubuntu flavor for some time - I've become quite adjusted to /etc/init.d/ for restarting servcies. Now I get this message: root@tatooine:~# /etc/init.d/mysql status Rather than invoking init scripts through /etc/init.d, use the service(8) utility, e.g. service mysql status Since the script you are attempting to invoke has been converted to an Upstart job, you may also use the status(8) utility, e.g. status mysql mysql start/running, process 14048 This seems to have been brought about in the latest LTS of Ubuntu - why? What's so bad about /etc/init.d/ and what/is there a difference between service and /etc/init.d/?

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• Dual boot to windows 7

  - by Riley

  i just installed ubuntu 12.10 alongside windows 7 but now my computer automatically boots to ubuntu. i want windows 7 as my default operating system. when i start up my laptop it shows me no settings or any screen asking me what operating system to use. the ONLY way for me to boot into windows 7 not is to hit f12 at startup to bring up which to boot from, select my hard drive then bring up the grub loader in ubuntu, then select windows 7 loader. when i go into msconfig in windows 7 ONLY windows 7 is listed under the operating systems... i see no ubuntu at all. please help this is really annoying! Thanks.

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• Tell the CDI 2 Expert Group What You Think!

  - by reza_rahman

  Since it's introduction in Java EE 6, CDI has become a key API for the platform. CDI 1.1 was a relatively minor release included in Java EE 7 as was CDI 1.2 (to be included in GlassFish 4.0.1). We have much higher expectations from CDI 2 (projected to be included in Java EE 8) under the new leadership of Antoine Sabot-Durand. Much like we conducted the Java EE 8 survey to solidify future direction for the platform, CDI 2 is now undergoing the same effort. Towards this goal the CDI 2 leadership is now soliciting feedback on some very specific items via an open survey. Topics include the likes of Java SE bootstrap, asynchronous processing, modularity, EJB-style @Startup and @Asynchronous in CDI, configuration and CDI Lite. You can of course also provide free-form input on anything that's not on the survey. Take the survey now on the CDI specification site and help shape the future of CDI 2 and Java EE 8!

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• Ubuntu 11.10 problem with Nvidia

  - by dariush

  I have an acer with a Gforce graphics card. I installed ubuntu 11.10 and it was working properly until I installed Nvidia drivers via additional drivers, I hit "nvidia-xconfig" in terminal and then reboot. At startup lightdm fails to start. I changed /etc/X11/xorg.conf file back to default and reboot. It works properly, but with the default Ubuntu driver. I want to reconfigure Nvidia and use it. Can anyone tell me what should I do?

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• install 64 bit as dual boot with 32 bit

  - by profgeorgefhart

  I downloaded Ubuntu 12.10 - bit .iso onto a bootable USB and want to put it on to my 32 bit 12.10 system as a dual boot, using a totally separate 1 Tb disk [which already has data on it]. However, when I go to restart and hit F8 fir BIOS set-up, I can change all the settings except the boot search order. Is there some other way to force the startup to read the USB first? Is the fact that I cannot change the search order to do with the fact that the 32 bit OS was 'Installed in legacy mode' not 'EFI? How can I rectify this? (This might be related -- might I need to update my BIOS for my Intel DX38BT motherboard? I think their last upgrade was 2009.)

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• Encrypted usb stick not booting anymore how can I resolve the Disaster

  - by statquant

  Guys I am experiencing massive problem here. I created a bootable usb stick that I "full disk" encrypted with Ubuntu 13.04. I was using it when it froze. I had to reboot it manually and now I cannot boot on it anymore (It is not listed in the boot menu anymore) If I put when I run Ubuntu on my laptop ubuntu can see it and I am asked for a password But the correct password does not seem to work (I assume that this passphrase is the one I was using previously at startup) Can you please help me figure this thing out, this is massive problem to me...

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• How to make a clones for the buttons? [closed]

  - by user1764781

  I need to create the new button that allows to make the clone of buttons in the code below. Please share some ideas, codes, links, scripts. using UnityEngine; using System.Collections; public class hibye: MonoBehaviour { public string slectedItem = "fd"; private bool editing = false; private void OnGUI() { if ( GUILayout.Button(slectedItem)) { editing = true; } if (editing) { string[] sig = {"Banana","Apple","Orange"}; for (int x = 0; x < sig.Length ; x++) { if (GUILayout.Button(sig[x])) { slectedItem = sig[x]; editing = false; } } } } }

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• PHP - Data Access Layer

  - by scarpacci

  I am currently reviewing a code base and noticed that a majority of the calls (along with DB connections) are just buried inside the PHP scripts. I would have assumed that like other languages they would have developed some sort of data access layer (Like I would do in .Net or Java) for all of the communication to the DB (or implemented MVC, etc). Is this still a common pattern in PHP or is there alternative methodologies/patterns for this technology? I am just trying to understand why the subs would have developed it this way. Any insight/info on how experienced developers design an approach data access in PHP would be very much appreciated.

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• Interface design where functions need to be called in a specific sequence

  - by Vorac

  The task is to configure a piece of hardware within the device, according to some input specification. This should be achieved as follows: 1) Collect the configuration information. This can happen at different times and places. For example, module A and module B can both request (at different times) some resources from my module. Those 'resources' are actually what the configuration is. 2) After it is clear that no more requests are going to be realized, a startup command, giving a summary of the requested resources, needs to be sent to the hardware. 3) Only after that, can (and must) detailed configuration of said resources be done. 4) Also, only after 2), can (and must) routing of selected resources to the declared callers be done. A common cause for bugs, even for me, who wrote the thing, is mistaking this order. What naming conventions, designs or mechanisms can I employ to make the interface usable by someone who sees the code for the first time?

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• unable to boot from live USB!

  - by ramblinman

  Linux noob here. I was messing around with my new dual-boot (win7 and the latest ubuntu, 12.04 I think?) Long story short, I deleted some partitions that I shouldn't have. When I boot up the machine, I get: error: no such partition. grub rescue _ I know that I could probably fix this by booting from the live USB. But I can't boot from the live USB either! On startup, I can get "boot from drive" options by pressing F12. (This is how I installed Ubuntu in the first place.) But when I select the USB drive, I get this error: error: no such device: [long string of letters and numbers]. grub rescue _ I've searched around for a fix but most threads addressing the first problem suggest booting from live drive. And I can't do that! Any help much appreciated.

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• Trouble with printer canon lbp2900-Ubuntu 14.04

  - by user288922

  I use Ubuntu 14.04. I installed the printer Canon LBP2900 following the guide and did all steps and now the printer works. I added CCPD in Startup Application (with command: sudo /etc/init.d/ccpd start). But after I log out or restart my pc, the printer can't print until I have to open terminal and run sudo /etc/init.d/ccpd restart && sudo /etc/init.d/cups restart. Once more, after restarting my pc I’ve just only printed 1 job (of course it can't print), and I run sudo /etc/init.d/ccpd restart && sudo /etc/init.d/cups restart, the printer will work but it prints the same job three times.

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• How to create this drop down box [migrated]

  - by mystycs

  I am trying to create this dropdown box that slides down and has the bottom image retain as it slides down withc ontent inside it. I have beent rying to find scripts dedicated to this but i cant find any. Maybe someone can give me a headstart or pointer in doing this. Or has a script i can work off of? Here is my objective. To create a slide down menu that slides down and up on click but retains this look to it.

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• Script or bat that will make shortcuts

  - by user227056

  I want to make bat (windows) file that will move * files from desktop to x folder and then make shortcuts on the desktop (they must be linked to files in x folder). So: the problem is: There is no way to make shortcut using bat. Only using third-party applications... Or/and using scripts. I need the program/script... that will get their adress, link shortcut to every single file (...\x\s.exe, desktop\s.lnk; ...\l.txt, desktop\l.lnk)...

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• Is it okay for an application to check for automatic updates in less than 20 hour interval?

  - by FlameStream

  I have a desktop application that has the ability to automatically update itself on the next restart (without the user's consent - but this is another issue altogether). Assuming that the user would never notice anything related to application updating (such as a progress bar, or pop-up requiring restart), and that our server would support the request spam load, is there any reason why it should not check for updates in less than 20 hour interval? The reason I'm asking this is because all applications that I know that have auto-update capability check for update every 20 to 24 hours and at startup. I was just wondering if there was an ethical rule about it, or simply because of the risk of overloading the server.

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• Need private personal access to ~three PHP pages

  - by Roger

  I would like secure access to the text output by three PHP scripts (the text output is JavaScript and html) . The security level is much less then financial data but important none-the-less. I have considered purchasing AND studying https and SSL certificates. Hostgator charges an extra $2/month for a private ip plus $50+ anually for a certificate. This is more then I want to spend for this project (time + money). Is there a simpler solution that is: less expensive easier to implement. I'm open to different approaches.

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• Joining and compressing all javascript files together - good idea?

  - by Tomáš Zato

  Curently, I avoid loading any unnecesary scripts on individual pages of my site. I have a class that remembers all javascript files that were requested during PHP processing and adds them to HTML. I was just thinking that I could merge the current set of files, save the result in special directory and let the browser download just one, big file. Since the number of possible combinations is not very high, I would end up with about 10 combined files for different pages. I've never seen that on any site. What are the reasons not to do it? I need very fast page load.

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• session persisting problem after system restart

  - by user100124

  Is there a way to prevent session id restore on startup/restart of user's system? We are using a asp.net app and I am able to login and access the site. For the first time session id is created and stored in cookies. Problem: But if I restart my system without signing out, the session is still alive. How can I prevent this? from server side. I can try to delete cookies but it is not practical, as each user will have different preferences.

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• What steps should be taken to ensure that an open source database gets ready for production?

  - by I_like_traffic_lights

  I am considering using GridSQL in a production environment. However, I do have some indications that it is not ready. One is that it got excluded by the offering of EnterpriseDB a while ago, and the forums seem to report a few wrong results and relatively severe bugs. The alternatives to GridSQL, however cost around 100.000$ to buy, so I was thinking to utilize some of this money to ensure that GridSQL gets ready for production. At the same time, I could risk spending 50.000$ and months of work on the development of GridSQL, just to discover that the design was flawed and that a complete rewrite is needed. Then I would have to buy the commercial alternatives to GridSQL and the existence of my startup would be at risk. Question What steps would you take to ensure that there is as little risk as possible that the worst case scenario described above would happen? It is unrealistic that I could do much testing nor code review/coding myself (I am also not the best developer), so please describe where to find the guys that would need to do the work.

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• WordPress 3.4 est sorti, l'outil s'enrichit d'une prévisualisation des rendus des thèmes sans publication du site

  WordPress 3.4 est sorti Avec un outil de prévisualisation des rendus des sites avant publication WordPress, le plus populaire des scripts de blogs PHP, vient de passer en version 3.4 avec deux mois de retard sur la feuille de route prévue. Les nouveaux cycles de développement visent à sortir une version majeure tous les 3 à 4 mois et la version 3.3 était sortie en décembre. Au menu de cette 3.4, on trouve une fonctionnalité star : un outil pour faciliter la personnalisation des sites. Il est en effet à présent possible de tester un thème ? gratuit ou payant ? sans avoir à le publier. Ce « live preview » permet également de modifier les headers (qui peuvent être pris dans la bibliothèque d...

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• disable password prompt on user switch?

  - by matthewn

  I've got 11.10 on a desktop machine with two users. Both users have "Password" set to "Not asked on login" in Users Settings. At startup, either user can log in without a password. But once both users are logged in, it takes a password to switch between users. In previous Ubuntus, you could override this by setting /desktop/gnome/lockdown/disable_lock_screen to True in gconf-editor. That is ignored in the Gnome 3 / Unity era. Does anyone know a way to disable the password prompt when switching between users in Oneiric?

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• How do I create stand alone packages from ubuntu repository

  - by tachyons

  Is it possible to create a stand alone deb packages by merging dependancies without manual repacking.?? I've looked at this question but it doesn't really answer what I'm trying to achieve above. if possible how to do it? update 1 No tools available yet(?) So what about creating new deb package containing all packages which will copy dependencies to the cache and executing main package. Is it possible? update 2 Above method appears to be impossible because dpkg cant handle more than one operation at a time. Some scripts may can do it update 3 this tool is very helpful but it currently wont support oneric and above still waiting for more generic tool Thanks in advance

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• Windows not closing

  - by bhanu

  After login, a number of windows such as Desktop, Downloads, and Pictures opens automatically. When I try to close them one by one closes itself but last one opens all indicating starting file manager in lower panel/status bar. After login all the windows such as desktop,download,home opens automatically when i try to minimise them all minimise. when i try to close them one after another they disappears but not last one which closes itself and reappear along with other indicating message starting file manager in status bar. ( it seems that there are a number of open nautilus windows at startup upon login, and when the user tries to close them, nautilus crashes and tries to restart)

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• Web Speech API franchit un nouveau cap, la spécification JavaScript permettra d'intégrer la reconnaissance vocale dans les pages Web

  La spécification Web Speech API franchit un nouveau cap l'API JavaScript permet d'intégrer la reconnaissance vocale dans les pages Web La spécification Web Speech API vient de franchir une étape importante dans sa normalisation. Le groupe de travail Web Speech API du W3C a récemment publié le futur standard avec un appel des membres pour un accord de la spécification finale. Cette spécification décrit une API JavaScript qui permettra aux développeurs d'intégrer la reconnaissance vocale dans les pages Web. Grâce à cette API, les développeurs pourront utiliser des Scripts pour générer du texte à partir des paroles, utiliser la reconnaissance vocale comme entrée pour l...

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