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• Is there a batch processing framework that could be used for C++ applications?

  - by Benjamin

  In my team we develop several command-line C++ applications that work together; they're currently run by hand in separate windows, and after a while managing windows gets really confusing. I'm looking for a better way to manage the processing of these applications; ideally it would have a GUI with the ability to do the following: start applications in a specified order display application status close particular applications Is there anything available that does this type of thing or would we need to develop our own? Is there a better way than this?

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• Ubuntu won't boot on windows starter

  - by First timer

  I installed Ubuntu 12.04 LTS yesterday from a usb, but it only boots into Windows unless the usb is in, then it boots into the Ubuntu loader where I can choose Ubuntu vs. Windows. What's the problem? I run windows starter on a netbook with 1 gb ram and intel atom processor. I tried to install boot-repair but it won't work either. I follow the instructions for the Terminal and it seems to go right until I try launching it - then it says that it does not know the command boot-repair. I really like Ubuntu, it lets this netbook run smoothly and better than ever before but I don't think I want to boot from a usb every time.

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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 14.04 upgrade succeeded partially - I would like to use a different mirror; how can I do that?

  - by user290648

  When I wanted to upgrade from Ubuntu 13.10 to 14.04 the update manager told me that there was an unresolvable problem with calculating the upgrade. In order to see more details I performed the following on the command line: apt-get update apt-get upgrade apt-get dist-upgrade apt-get install update-manager-core do-release-upgrade Now do-release-upgrade tells me that no newer version is available but the "about" box in the main menu tells me I am still on 13.10. I think the latter is right, as for instance in the "system settings" there is no way to select local menus, which is present in 14.04 (I tried with a DVD, and there it is). Maybe the problem is related to the fact that "apt-get update" cannot get two resources called "saucy/InRelease" and "saucy/main/binary-i386/Packages" from the mirror (mirror.informatik.uni-mannheim.de; 404 not found). I would like to use a different mirror; how can I do that? Any help appreciated, thanks in advance.

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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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• 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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• 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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• Why does service service_name status give different responses for different services?

  - by Code Ghar

  Running the "service service_name status" command gives three different types of output when three different service_names are used. I tried with atftpd, apache2, and isc-dhcp-server, as shown below. user@host:~$ service atftpd status Usage: /etc/init.d/atftpd {start|stop|restart|reload|force-reload} user@host:~$ service apache2 status Apache2 is running (pid 1103). user@host:~$ service isc-dhcp-server status isc-dhcp-server start/running, process 5696 Could this be because atftpd has not been converted to Upstart? The status for isc-dhcp-server shows "start/running" which indicates it has been converted to use Upstart. I would've thought apache2 would have been converted to Upstart already. If it has then why does it not display "start/running"?

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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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• nVidia FX5200 Can't set resolution upper than 800x600

  - by Sebastian

  When I install nVidia drivers from terminal with this command: sudo apt-get install nvidia-current ... and I reboot, I get the max. resolution 800x600. I added new mode successfully with xrandr, but my display is 480p. My display is connected to my PC with HDMI and in Windows I was have VGA resolution on HDMI but after I installed in Ubuntu the drivers, the resolution is 480p.How to fix that? And can I change the 420p to 720p or 1080i ? Because my display have option "HDMI Full PC mode" which is good because I can see my display fully, but the Full PC mode is not supported for 480p. Ubuntu: 12.04

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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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• Upgrade Ubuntu 12.04 to 12.10 failed

  - by pre-commit-hook

  I've a problem. Upgrade failed after "Setting new software channels", when Calculating changes. I tried error: Not all updates can be installed An unresolvable problem occurred while calculating the upgrade: E:Unable to correct problems, you have held broken packages. This can be caused by: * Upgrading to a pre-release version of Ubuntu * Running the current pre-release version of Ubuntu * Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. Now i have 1580 packages to update and do not update. Partial system upgrade also fails in the first step. What next? Alternatively, to undo the changes? Thank's to help.

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• ssh:connection timed out

  - by user1155299

  I am trying the following command on ubuntu ssh [email protected] and I get the following error: ssh: connect to host xx.xx.xxx.xxx port 22: Connection timed out so, I tried the following: telnet xx.xx.xxx.xxx 22xx and I got the following message: Trying xx.xx.xxx.xxx... Connected to xx.xx.xxx.xxx. Escape character is '^]'. SSH-2.0-OpenSSH_5.5 Connection closed by foreign host. Can anyone help me understand what the problem is and how I can fix it.

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• Do I need to do an "apt-get update" after adding a PPA?

  - by Sat93

  After adding a new ppa to the repository, is it necessary to update the whole database? By "whole database" I mean is it necessary to update index's of each and every packege? If it's not necessary, then how can I update only that specific package whose ppa I have just added into the repository. For example, if I add an ppa by typing the following in terminal, sudo add-apt-repository ppa:tiheum/equinox then we normally run the following command after it, sudo apt-get update But how can I update the only package which is associated with the above ppa, instead of updating the whole database.

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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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• iptables rule problem

  - by thakrage

  I've been searching around for some time now, but nothing solves my problem. I'm setting up a mail server, but when writing to the iptables, I get an error: iptables-restore: line 2 failed. I'm tryig to use the following /etc/iptables.test.rules: # Allows SMTP access -A INPUT -p tcp --dport 25 -j ACCEPT # Allows pop and pops connections -A INPUT -p tcp --dport 110 -j ACCEPT -A INPUT -p tcp --dport 995 -j ACCEPT # Allows imap and imaps connections -A INPUT -p tcp --dport 143 -j ACCEPT -A INPUT -p tcp --dport 993 -j ACCEPT After this, I'm issuing the following command: sudo iptables-restore < /etc/iptables.test.rules However I get returned this: iptables-restore: line 2 failed. I don't know what the problem is. Can anyone clarify? btw. I'm using Ubuntu 10.10 LTS

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• NetworkManager refuses to manage my WLAN interface

  - by user104167

  I'm using Ubuntu 12.10 with Gnome 3.6 on a brand-new Samsung NP900X4C. The installer detected the wireless adapter, took in the SSID and WPA passphrase, wrote these into /etc/network/interfaces and connected perfectly. Once installation was finished I wanted to switch to using NetworkManager to manage the wireless adapter, since this is much more convenient than fiddling with /etc/network/interfaces every time I find a new hotspot. Therefore I edited /etc/NetworkManager/NetworkManager.conf to set: [ifupdown] managed=true When I rebooted NetworkManager, the problems started: - The NetworkManager tray applet changed from saying device not managed to device not ready - I lost all internet connectivity as wlan0 would not associate to the Access Point - if I set managed=false in NetworkManager.conf and restarted both NetworkManager and networking services from the command-line, the Gnome desktop "semi-crashed" and lost all its Window Decorations, the panel, the launcher and basically became unusable. However if I restart the computer completely after setting managed=false, wlan0 once again works perfectly.

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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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• Is this a typo in the Artistic License 2.0?

  - by IQAndreas

  I'm not sure if this would fit better in StackExchange/English, but regardless, there is no practical use to the answer, other than to cure my curiosity. Note this sentence at the end of the Artistic License 2.0: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. It does not affect any legal aspects of the license, but is there a reason they mixed the use of single and double quotes on AS IS? The license is so new that this wouldn't have been for "command prompt friendly" reasons. Is there special use or meaning behind this in the English language, or was it a typo?

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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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• 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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• I can't log into my ubuntu 12.04

  - by user292674

  When I try to log in on my Ubuntu 12.04 it goes to a black screen ( of logging in checking stuff ), and says Checking battery ----- [ok] ( I'm using a computer instead of a laptop ) and just goes back to the login screen. Two days before I executed the command sudo startx trying to start KDE, but it didn't work. And after logging off and trying to log in again, I had this problem. A big problem is that I don't have internet connection at home. What should I do?

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• Trouble installating openjdk6 on 12.04 LTS

  - by Lost

  I tried to install openjdk6 on 12.04 LTS, with the command: sudo apt-get install openjdk-6-jre but got the following error: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: openjdk-6-jre : Depends: openjdk-6-jre-headless (= 6b24~pre1-1ubuntu3) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Please help. Thanks!

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• Wireless hardware is not getting switched on in 12.04

  - by user89733

  I have recently installed ubuntu 12.04 in sony vaio VPCEH. And updated all the available updates through update manager. When i switch on the bluetooth/wireless (hardware switch), only the bluetooth is turning on. For wireless, it shows as "hardware disabled". P.S: It was working fine few days before. Suddenly It is not turning on. i just get an answer for this question while googling. just enter the following command in the terminal. "sudo rfkill unblock all" This will unblock all hardware ports. that's it!!!!!! :) It works,..

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• Bumblebee screwd up my grafics-settings

  - by user104762

  I had my system working pretty good with the external monitor working with the displayport. Unfortunately I felt that I should try to install Bumblebee. It didn't work. The monitor wasn't recognised. So I uninstalled it with the instructions on ubuntus wiki. But it didn't get back to the way it was. And when I copied the Purge-command it started deleting other stuff to, like Cheese and whatnot. I can't get the external monitor to be recognised. If I activate Optimus I get the right settings on my laptopscreen, but no Nvidia-drivers. If I deactivate optimus I get poor resolution on my laptopscreen, and still don't recognise the external monitor. But the Nvidia-drivers show up and can be activated. Why oh why did I have to try to install Bumblebee.

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