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• error when installing rmagic gem on Ubuntu 12.04 for Ruby on Rails

  - by PeaceDefender

  0 down vote favorite I am trying to get my Ruby on Rails application working and installing RMagic gem. But I get an error that says "Can't install RMagick 2.13.1. Can't find the ImageMagick library or one of the dependent libraries." Altough I have ImageMagick installed with its dependences. Terminal log : http://pastebin.com/vcgkbwZR I even tried to installed RMagic from Synaptic, but I get the same error when I run "bundle" command. Through my search, some people had problem with lib dependencies, but I believed I have them all installed. Another solution I found is this ( error installing RMagick from gem ) a little bit old and not sure if it is going to work for 12.04. BUT, I don't know where those configurations should go.

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• How to copy or sync music on iphone 3gs on ubuntu 14.04?

  - by user276842

  I’m using Ubuntu 14.04 and want to copy music to/on my iPhone 3gs. I already installed the actual mobile device, but neither Rhythmbox nor gmusicbrowser show my phone. Only on Gigolo I can see it, and transfer data, but the music I copy is not working on my phone. On Amarok I get at least this information: termined mount-point path to /tmp/kde-cafer/amarok/imobiledevice_uuid_882ba1378fe4eb76e98ad6582dcad031c2247664 calling `ifuse "-u" "882ba1378fe4eb76e98ad6582dcad031c2247664" "-ofsname=afc://882ba1378fe4eb76e98ad6582dcad031c2247664" "/tmp/kde-cafer/amarok/imobiledevice_uuid_882ba1378fe4eb76e98ad6582dcad031c2247664"` with timeout of 10s command failed to start within timeout Failed to mount iPhone on /tmp/kde-cafer/amarok/imobiledevice_uuid_882ba1378fe4eb76e98ad6582dcad031c2247664 Does anyone have an idea? Thanks

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• Ubuntu 12.04 Server monitor goes into sleep mode (no display) after fresh install

  - by xamox

  For some reason I can boot and either use Ubuntu 12.04 server edition, or desktop version. I can live boot the disk, I can go through the installer, or even use the ubuntu alternate installer. But for some reason after the install completes and I reboot the monitor seems to go back into sleep mode and then never loads the command prompt. This is on an industrial adlink MXE-1300 PC. I've installed ubuntu server fine on other models of adlink machines but this one doesn't want to seem to play nice. To me it seems like if it was a video card issue than I could never even load the installer or run ubuntu in live mode. Any thoughts or troubleshooting tips would be greatly appreciated.

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• What to do about this gnome-keyring message?

  - by arroy_0209

  I upgraded from ubuntu 10.04 to 12.04 and installed lxde. Since then whenever I try to print some file (or use command lpstat), I get this message on the terminal: "WARNING: gnome-keyring:: couldn't connect to: /tmp/keyring-SZ59jJ/pkcs11: No such file or directory". This is beyond my knowledge and from search I only realize that this mey be related to security (as learned from gnome-keyring on wikipedia). I have no idea what to about this warning. Can anybody please suggest? Evidently as stated, I am not using gnome desktop, I choose lxde session at the time of logging in.

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• SQL SERVER Data Pages in Buffer Pool Data Stored in MemoryCache

  This will drop all the clean buffers so we will be able to start again from there. Now, run the following script and check the execution plan of the query. Have you ever wondered what types of data are there in your cache? During SQL Server Trainings, I am usually asked if there is any [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• What should be the correct ownership of /tmp /var /usr and subdirectories?

  - by sbergeron

  For some reason I think the permissions of those were messed up from a small amount of disk corruption I had. This may be a dupe, I don't know but I googled it and didn't find any mention of it. I need to know how the permissions of them should be set up as currently my computer can't actually use the tmp directory and I can't download anything consequently. I have access to the recovery mode command line but while in sudo user prompts it doesn't seem to work correctly. Also something is wrong with package management and I get dpkg: error: unable to access dpkg status area: read-only file system. I know my system is really messed up but I don't want to have to reinstall AGAIN.

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• "Never do in code what you can get the SQL server to do well for you" - Is this a recipe for a bad design?

  - by PhonicUK

  It's an idea I've heard repeated in a handful of places. Some more or less acknowledging that once trying to solve a problem purely in SQL exceeds a certain level of complexity you should indeed be handling it in code. The logic behind the idea is that for the large majority of cases, the database engine will do a better job at finding the most efficient way of completing your task than you could in code. Especially when it comes to things like making the results conditional on operations performed on the data. Arguably with modern engines effectively JIT'ing + caching the compiled version of your query it'd make sense on the surface. The question is whether or not leveraging your database engine in this way is inherently bad design practice (and why). The lines become blurred further when all the logic exists inside the database and you're just hitting it via an ORM.

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• How can I pull data from PeopleSoft on demand?

  - by trpt4him

  I work in IT at a university and I'm working with about 5 different departments to develop a new process for students to apply to a specific school within the university (not the university as a whole). We're using a web-based college application vendor and adding the applicant questions for the school itself to the main university application. Currently the main application feeds into PeopleSoft. The IT staff here is building a new table to hold just our school's applicant data. I want to be able to access that data from PeopleSoft for use in external applications, but our IT staff doesn't really seem to understand what I'm requesting, as they simply tell me I can have access to the PS query tools. The problem is, I don't want to run just ad hoc queries, I want to be able to connect from outside PeopleSoft and show current data within the external app. I am unable to find documentation or get a clear answer to my question. Does PeopleSoft support access via a web services API or anything similar, and does that sound like the right direction for me to take?

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• Can't open any of my drives/devices(not USB drive)

  - by Anontu

  I can't open any of my computer drives (:c/,:d/.....) Every time i tried to open the drives, the following notice appeared: (i'm new in Ask Ubuntu,so,i can't upload the snapshot,i need 10 reputations to do that) **Unable to access "__ Volume"** error mounting/dev/sda7at/media/MyPC/__Volume:Command-Line 'mount-t "ntfs"-o "uhelper=udisk2,nodev,nosuid,uid=1000,gid=1000,dmask=0077,fmask=0177""/ dev/sda7""/media/MyPC/__Volume"' exited with non-zero exit status 14:The disk contains an unclean file system (0,0).| Metadata Kept in Windows cache,refused to mount. Failed to mount '/dev/sda7':Operation not permitted The NTFS partition is in an unsafe state.Please,resume and shutdown Windows fully(no hibernation or fast restarting),or mount the volume read-only with the 'ro' mount option. I have Windows side by side Ubuntu 13.04 in my computer and i have done (like-Shutting down Windows properly...) things as these in the notice. But it's not working.

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• Ubuntu 11.10 is on external HDD, how to boot (using grub4dos), and which initrd and vmlinuz to use?

  - by user198003

  I installed Ubuntu 11.10 on external HDD. How can I boot it? I used grub4dos before, and it worked with Fedora distributions. Problem I have now is that I don't know which initrd and vmlinuz files to use. Tried with one I have in /boot directory, but booting did not worked... Can you give me some ideas what to try, do i have to use different initrd and vmlinuz, or I can solve this with other solutions. Also, just to mention that boot goes to BusyBox v1.18.4 command prompt. Thank you in advance!

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• Capslock as modifier key for AutoKey

  - by nil

  I want to use Capslock as a modifier key for AutoKey shortcuts, and I've successfully remapped it to its own custom key using the terminal command xmodmap -e 'clear Lock' -e 'keycode 66 = F13'. However, AutoKey seems to only allow the modifiers Ctrl Shift Alt Super when setting shortcuts. As a work-around, could I somehow define the shortcuts within the script itself? Would this even be the most efficient work-around? P.S. I found a relevant page, though I'm not exactly sure how to implement it. P.P.S. I found a cheap way to do this by mapping Capslock to Shift+Alt and then setting all appropriate shortcuts in AutoKey with the modifier Shift+Alt. However, I'd really prefer having Capslock as its own modifier. Any help would be appreciated.

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• How do I fix the audio on my laptop. model Fujitsu B6220

  - by user89756

  I reinstalled Ubuntu 12.04 on my laptop because the Unity desktop was freezing. Reinstalling 12.04 seems to have fixed the freezing problem, but now the audio does not work. When I go to SettingsAudio and under the Output tab it only has the option for Digital Output. There is no option for Analog Output. The sound card show up under lspci as: "00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)" What would be the command to reinstall the audio subsystem? If that would fix it...

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• How to connect to other Ubuntu machine as X Server?

  - by Tibo

  When I want to work on my local Linux machines from windows, I use Putty+Xming and I set the Xming port in Putty connection settings. This way I have a terminal on the machine and if, for example, I run the command 'firefox' a firefox window is opened in Windows (while it is really running on the Linux machine). I want to do the same thing from other Linux machine (they are both Ubuntu machine) connect by SSH and become this connection X Server so any graphic component will be opened on local machine. How can I do that?

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• 12.04 LTS update manager

  - by user108753

  I get the following msg: The package system is broken Check if you are using third party repositories. If so disable them, since they are a common source of problems. Furthermore run the following command in a Terminal: apt-get install -f. The following packages have unmet dependencies: gnome-icon-theme-full: Depends: gnome-icon-theme (= 3.4.0-0ubuntu1) but 3.4.0-0ubuntu1.1 is installed libreoffice-core: Depends: libgcc1 (>= 1:4.1.1) but 1:4.6.3-1ubuntu5 is installed linux-headers-generic: Depends: linux-headers-3.2.0-27-generic but it is not installed linux-headers-generic-pae: Depends: linux-headers-3.2.0-27-generic-pae but it is not installed

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• Ubuntu not booting after upgrade to 12.04 from 11.10

  - by ddd

  I upgraded to 12.04 from 11.10 today. After the upgrade, I did the usual reboot of the system and then Ubuntu hangs on Checking battery state..[OK]. I can login to terminal with Ctrl-Alt-F5 and I did startx but it hangs after displaying white images of the desktop icons..there is no menu or any top bar at all. I guess this problem has something to do with Xserver, but I cannot find xorg.conf on my system. How can I get around this problem? Also is there a way I can make a backup of my files through the command line, because the GUI is not showing up at all?

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• iptables firewall to protect against automated entries

  - by Kenyana

  I am getting unusually large calls on my app. I have implemented CSRF Check over ajax and its working but am still getting so many calls. My guess is that someone has a script that is 'logged' in and making all these calls. Could someone please share a good iptables script for blocking ip's that run 10 calls to /controler/action in a second. I am using `/sbin/iptables -A INPUT -p tcp --syn --dport $port -m connlimit --connlimit-above N -j REJECT --reject-with tcp-reset save the changes see iptables-save man page, the following is redhat and friends specific command service iptables save` That is from cyberciti

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• How do you assign commands to keys to in Terminal?

  - by NES

  Is there a solution to assign special key combinations to words in terminal use. For example the less command is very usefull and i use i a lot to pipe the output of another process through it. The idea would be to set up special key combinations that are only active in terminal use assigned to write different commands? So pressing CTRL + l in terminal window could write | less or CTRL + G could stand for | grep Note: i just mean adding the letters to commandline not execute the finally. A similar way what's tabcompletion but more specific.

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• Ubuntu crashed during the update to 12.04, not I can't recover my files, help please

  - by mrah

  I'm pretty new to Linux and I've only installed Ubuntu as I couldn't afford to buy Windows, worked well and I liked it. But I chose to upgrade it to the newest version after a prompt. The update froze and the machine was unresponsive which forced me to hard reboot it. Now nothing seems to load and I've reached my wits end (mainly cos I'm lost in all the command lines). I've decided to try and recover my data from the hard drive, only two folders, by selecting the try Ubuntu option when I insert the OS CD into the machine. The problem I'm experiencing now is it won't let me copy my folders, I get a 'The folder contents could not be displayed. You do not have the permissions necessary to view the contents of "folder_name".' Does anyone know how I can recover this data?

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• GUI is not displayed anymore

  - by mdobrinin

  I am running 12.04 LTS on a VM. I encountered a problem with the screen being black and the familiar orange background showing for a fraction of a second when clicking or resizing the screen. I had to shutdown the machine and now I have no GUI. I only get a black command-line interface. As some other posts suggest, I attempted: sudo service lightdm restart This doesn't work for me because it gets stuck at this point: Skipping profile in /etc/apparmor.d/disable: user.bin.firefox Skipping profile in /etc/apparmor.d/disable: user.sbin.rsyslogd * Starting AppArmor profiles [ OK ] Any ideas?

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• How do I get my Mac to boot from an Ubuntu USB key?

  - by user11621

  If you select "USB" and "Mac" on this download page, it gives a series of command line instructions to make a USB key which the MacBook will boot into Ubuntu from. I've followed them to the letter two or three times on different USB keys, and it doesn't work. There's a very great deal of technical discussion about EFI etc. but this set of instructions seems to suggest it should just work, but it doesn't. Help? I'm increasingly unhappy with the more locked-down approach Apple is taking, and I'd quite like to start using Linux with a view to transitioning over to using it as my main operating system, but booting from the CD takes forever, runs slowly and I'm really hoping to get it moving off USB. Can anybody help me?

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• In-memory DB to perform intersects on set slices

  - by IanC

  I have a specific programming need where I need to efficiently store large sorted sets in memory, query them for ranges, and intersect them against other sets that are also queried for ranged. I am looking at Redis, but I can't see a range slice command. MongoDB can only use 1 index, so it has to perform row-level scans, whereas I wish to process using columns that are intersected. I'm also looking at Counchbase, but can't easily determine from the documentation if it is suited to this. I know it uses Memcached, which is AFAIK not suited to this usage. Could anyone share potential solutions for this specific problem? EDIT For example, I need to perform the following: Get the IDs of all cars where the price is between 2000 and 3000, and intersect that will all cars where the engine capacity is between 3000 and 4000.

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• How do I install latest NVIDIA drivers from the .run file?

  - by Shahe Tajiryan

  This is what I am trying to do. I downloaded the latest driver for my VGA from http://www.nvidia.com. The installation needs the X11 to be shut down, so I log out of my account, then press CTRL+ALT+F1, then log in with my username and password, then run the command sh NVIDIA-Linux-x86_64-285.05.09.run in every possible way, I have even tried CHMODing the package with 777 permissions, but still I'm getting the sh: can't open NVIDIA-Linux-x86_64-285.05.09.run error. Any help would be greatly appreciated.

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• CLI Shared Hosting Management (scripts to manage web users and hosts) [on hold]

  - by aularon

  I am currently administrating two servers: first one has no control panel, I am creating directory structure, setting permission, configuring different aspects (users/php-fpm pools, nginx hosts..) for each of sites. With more clients, I sat up ISPConfig on my second server, everything is easily handled by ISPConfig Web Interface. However, I am searching for a CLI based solution, i.e. a set of scripts to create and manage hosts. Basically, a method to control ISPConfig from the command line (so I can use it over SSH) would be a good start. Does anybody know of such effort? I searched but all I got was web based solutions. Thanks.

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• How to install aircrack on Ubuntu 12.04

  - by user287903

  I have downloaded the tar.gz package from the site and then I have extracted using tar -zxvf command as mentioned over there. After that I used sudo apt-get install build-essential then I further installed libssl-dev. Then I changed directory to the aircrack folder. But when I type either sudo make or just make I am getting this same error. I don't know what to do. I have installed the file what they have asked in the error as well. Still the same error is shown. Okay I am not permitted to upload images. The error is : common.mak:85: *** Cannot find development files for any supported version of libnl. install either libnl1 or libnl3.. Stop.

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• Ubuntu Windows Installer - Firewall

  - by Max

  I installed Ubuntu with the Windows installer to use it along side. I could not find anything to activate a firewall so I thought its inbuilt and running. However now I read that I have to activate it manually? The command that was shown actually didnt promt any repsonse. Is it that the Windows installer version does not have that. Also my greatest concern is that I was without firewall protection for 2-3 weeks and I am using alot of public networks (university and dorm(only cable but still)). Thanks in advance.

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