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• nagios3 Error: Could not read object configuration data!

  - by user1493730

  I have a brand new install of nagios3 on ubuntu 12.04. After I log in to the web interface and click any link I get the error: Error: Could not read object configuration data! Here are some things you should check in order to resolve this error: Verify configuration options using the -v command-line option to check for errors. Check the Nagios log file for messages relating to startup or status data errors. I ran it with the -v option and it reported no errors: Total Warnings: 0 Total Errors: 0 Things look okay - No serious problems were detected during the pre-flight check The nagios log and apache error log and debug log all have nothing regarding this. Does anyone know how to turn on logging that will give me some kind of useful error? Or if anyone knows how to fix this specific problem without additional logging, I guess that's okay too. Thanks!

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• Stop KDE services from running

  - by Gabriel

  I recently installed KDE with the command sudo apt-get install kubuntu-desktop. Now whenever I log into Unity I can see KDE-related services running in the background and I see no obvious way to prevent them from opening at startup. I checked bum but I see nothing there. These are the services I see running right now: kde4 klauncher knotify4 These ones I can identify as being related to KDE given their names, but there could be more. How can I prevent these services from launching by themselves? I should mention I often use KDE applications such as kate, okular and kile. Could these be responsible for opening those services?

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• Lubuntu 14.04 graphics problem on portege r100

  - by user286069

  first of all I have to say that I am not an expert. I have installed Lubuntu 14.04 on my Portege R100. The problem is that the graphics session does not start. Actually I can do all but only by command line. I try to start Xsession but nothing happens. Actually by typing startx the system stop to works. I read several threads on this topic but I did not find such kind of problem. There is something similar about portege r100 concerning lowgraphics mode but the porblem I have seems to be different because graphics session does not start. Can anyone help me ? Thank you Best

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• thunderbird-bin causing CPU (core) lockup (12.04, 64bit, up-to-date)

  - by david6

  I have experienced 2-3 unexplained lockup over last 10 days. Today, I had a random lockup (no mouse, keyboard response, 100% CPU). But, when I finally switched (Ctrl-Alt-F1) to command line (it took several minutes) it told me that thunderbird-bin had locked a CPU. I ran this to resolve: pidof thunderbird-bin sudo kill #### However, after saving other work, I tried restarting Thunderbird. It went to 90%+ CPU, and within 20 seconds it locked again. Once I have more detail I will raise a bug (on Ubuntu Forums). Does anyone have any other suggestions, advice?

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• Stuck on Ubuntu Startup Screen

  - by Pietro

  Since yesterday, my system won't get past the startup screen (the Ubuntu logo with the blinking red dots). I left it for over an hour and didn't get the login screen. It was working normally before that and I don't recall any changes (no new software, etc). I can login through the terminal with ALT+F1 but I don't know what to do to get the graphic mode. The command startx fails. I'm running Ubuntu 12.10 64 bits on a Core I5 with Intel motherboard. No video card or sound card.

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• Get system info from C program?

  - by Hamid

  I'm writing a little program in C that I want to use to output some system stats to my HD44780 16x2 character display. The system I'll be working with is a Debian ARM system and, although irrelevant, the display is on the GPIO header.(The system is a Raspberry Pi). As an initial (somewhat unambitious) attempt, I'd like to start with something simple like RAM and CPU usage (I'm new to C). I understand that if I make external command calls I need to fork() and execve() (or some equiv that will let me return the results), what I would like to know is how I go about getting the information I want in a nice clean format that I can use. Surely I will not have to call (for e.g); free -h And then use awk or similar to chop out the piece I want? There must be a cleaner way? The question should be seen as more of a generic, what is best practice for getting info about the system in C (the RAM/CPU usage are just an initial example).

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• Bit copy of encrypted home and other partitions

  - by Mka

  My laptop is overheating so I need to save all my files before I format the hard drive. I learned how to copy dev/sdX using dd command. However, I am not sure what to copy. Picture from GParted here: http://is.muni.cz/www/256590/fig.png should I copy sda5 and sda6 only? Or sda2 and sda1? I do not need to use these data on another disk, I just want to be able to access them - therefore I want to put them on external hard drive. And last question - how I will then mount my encrypted home? Will it work? Thanks a lot!

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• Non-Full-Screen Application Launcher in Gnome 3?

  - by Jeff

  I'm trying out Gnome Shell in 11.04. You can push the "activities" key to get into the overview where you can launch applications. I like the idea of the overview as an aid in switching focus, but it's too slow for just launching an application. Is Gnome Shell going to implement, or does it have, a way to launch applications (besides the alt-f2 command launcher) that is as quick as Gnome-do? edit: To be clear, I'm aware of several Gnome application launchers. I'm curious about the Gnome Shell and any packages it includes (not add-ons like Gnome-do or Synapse).

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• ORA-28001 the password has expired error in Solaris Cluster

  - by Onur Bingul

  Solaris Cluster start or stop Oracle database using credentials of a specified user in Oracle Database. If you have issues with starting of Oracle Database resource and see ORA-28001 error message in /var/adm/messages it means that database user's who is used by Solaris Cluster to start Oracle database, password has expired. To resolve the issue reset the password of the Oracle database user SQL> alter user user_name identified by password  and change connection string in Solaris Cluster using following command -bash-3.2 # /usr/cluster/bin/clresource set -p Connect_string="user/password" oracle_resource

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• Open with Wine/Photoshop not working properly

  - by Kendor

  I am running Photoshop CS2 under Ubuntu 10.10 with Wine 1.3.23. I would like to be able to associate various file types with Photoshop. I'd previously used this script: #!/bin/sh QUICKPARLOCATION="c:\\Program Files\\Adobe\\Adobe Photoshop CS2\\Photoshop.exe" PARAM=`winepath -w "$*"` wine "$QUICKPARLOCATION" "$PARAM" exit 0 If I make this script be the customer command that's tied to "Open With," Photoshop launches, but doesn't appear to be properly passing the file name, so that file doesn't open. I'd had this working previously under earlier versions of Ubuntu and wine. P.S. please no commentary on using GIMP or other Photoshop alternatives

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• Where is a postgresql 9.1 database stored in ubuntu 12.04?

  - by celenius

  I installed and created a Postgresql database on ubuntu. I then created the database using the following command: sudo su postgres createdb mydatabase However, I can't figure out where the database was initialized. I would like to be able to edit the hba.conf file and postgresl.conf files. When I view the database using pgadmin I see the following information: CREATE DATABASE mydatabase WITH OWNER = postgres ENCODING = 'UTF8' TABLESPACE = pg_default LC_COLLATE = 'en_US.UTF-8' LC_CTYPE = 'en_US.UTF-8' CONNECTION LIMIT = -1; Any thoughts on how I can find the database cluster location?

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• how to have 'find' not return the current directory

  - by Pinpin

  I'm currently trying to find (and copy) all files and folder structure matching a specific pattern, in a specified directory and I'm so nearly there! Specifically, I want to recursively copy all folders not begining with a '_' character from a specified path. find /source/path/with/directories -maxdepth 1 -type d ! -name _\* -exec cp -R {} /destination/path \; In the /source/path/with/directories/ path are machine-specific directories beginning with '_' and others, and I'm only interested in copying the others. For a reason beyond me, the find command returns the /source/path/with/directories/ directory, and therefore copies its content, directories begining with '_' included. Anyone have a hint as to why that is? Thanks, Pascal

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• Nautilus only starts as root user

  - by user7978

  Hello. I am running Ubuntu 10.04 64-bit. When I attempt to start Nautilus from the command line, it does not appear -- although a PID is generated. As root/sudo, I can start Nautilus fine. One note: I run e16 as the windows manager, so I do not use Nautilus to draw my desktop. However, even under this configuration, Nautilus used to run fine as a "regular" user. The permissions for Nautilus are the same as the other packages in /usr/bin. I believe this is a Gnome issue, but I'm fumbling at this point.

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• trying to install ubuntu touch to nexus 4 - can't connect device (14.04 in virtual box on mac)

  - by Fiona Cox

  I'm trying to install Ubuntu touch to a nexus 4. I've followed all the steps so far, downloaded the packages and gotten the phone ready, but now I got to the step of connecting it to the computer [under 'Enable USB Debugging'], but it's not listed when I try $ adb devices (I tried the 'adb kill-server' command first too, but nothing is listed). I'm sure it's something simple I'm forgetting, but can anyone help please? I have debugging enabled. Running Trusty in VirtualBox on MacBook. Thanks!

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• How do you assign commands to keys 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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• Application starts as Terminal but not as a Desktop entry

  - by Dcm1405

  I just installed SQL Anywhere 12 and can start Sybase Central from the terminal with the command line below without errors: /opt/sqlanywhere12/bin32/scjview However, when I try to start it from a desktop entry I am receiving two error messages that could be something incorrectly defined in the desktop below: #!/usr/bin/env xdg-open [Desktop Entry] Version=1.0 Type=Application Terminal=false Icon[en_US]=gnome-panel-launcher Name[en_US]=Sybase Central Exec=/opt/sqlanywhere12/bin32/scjview Comment[en_US]= Name=Sybase Central Comment= Icon=gnome-panel-launcher Here are the error messages: (unable to post the error images) cannot find libsyblib610_r.so cannot find libulscutil12.so Since the application can be successfully started from a terminal window I was wondering how I could have it setup as a desktop entry as well.

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• Freezes if desktop effects is used.

  - by munir

  I have found that using desktop effects in Ubuntu versions later than 8.10 causes the desktop to freeze after a few seconds on my PC. the command lspci -nn gave the following 00:02.0 VGA compatible controller [0300]: Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02) and with lspci -k I have 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02) Kernel driver in use: i915 Kernel modules: i915 The intel graphics cards seems to have some performence issues with xorg driver. However I have not noticed any freeze in Ubuntu 8.10. There are some workarounds at https://wiki.ubuntu.com/X/Bugs/Lucidi8xxFreezes to make them work. But I can't find out what workaround should I do with my graphics controller. I have tried workaround F but it did not help. can anyone help me find a workaround for my graphics card? and is it actually possible to use desktop effect in this graphics card ?

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• Juju instances in aganet-state: down after turning them off (and back on) on EC2

  - by Tyler McAdams

  I turned my Juju instances off on EC2 for a while and after bringing them back online they seem to be in an odd state: [code] claude-vm@claude-vm-fusion:~/Documents/Shell Scripts$ juju status 2012-11-17 17:06:44,094 INFO Connecting to environment... 2012-11-17 17:06:45,590 INFO Connected to environment. machines: 0: agent-state: not-started dns-name: ec2-54-242-142-196.compute-1.amazonaws.com instance-id: i-b0996fcf instance-state: running 1: agent-state: down dns-name: ec2-50-19-186-245.compute-1.amazonaws.com instance-id: i-8c8375f3 instance-state: running 2: agent-state: down dns-name: ec2-54-242-255-238.compute-1.amazonaws.com instance-id: i-56807629 instance-state: running services: wordpress: charm: cs:precise/wordpress-9 exposed: true relations: db: - wordpress-db loadbalancer: - wordpress units: wordpress/0: agent-state: down machine: 2 open-ports: - 80/tcp public-address: ec2-54-242-227-57.compute-1.amazonaws.com wordpress-db: charm: cs:precise/mysql-10 relations: db: - wordpress units: wordpress-db/0: agent-state: down machine: 1 public-address: ec2-54-242-212-177.compute-1.amazonaws.com 2012-11-17 17:06:47,274 INFO 'status' command finished successfully [/code] Can I not take my instances down for a while? Or is this something else?

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• Show Ubuntu logo in Byobu (tmux) status bar?

  - by RSoul

  For some reason my Byobu (tmux) status bar is showing TAB instead of the ubuntu logo. This: where it should be this: I've tried installing some different fonts, but have not corrected the issue yet. Any ideas? Further information: sudo apt-get install ttf-ubuntu-font-family Reading package lists... Done Building dependency tree Reading state information... Done ttf-ubuntu-font-family is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Update: fc-list on my computer shows all the fonts with the prefix /usr/share/fonts/ e.g., /usr/share/fonts/truetype/ubuntu-font-family/UbuntuMono-R.ttf: Ubuntu Mono:style=Regular But the same command on a working system shows fonts listed thus: Ubuntu Mono:style=Bold Italic Perhaps it's a font location problem?

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• Ubuntu 11.04 Compiz crash after using Macbuntu script

  - by iman

  First of all, I have to say I am new to using Linux! I have installed Ubuntu 11.04 and I wanted to change its interface by using Macbuntu 10.10. I've done it but the problem is that genie effect was not activated until now. So I searched in many forums and I found out that I must change my compizconfig manager! I've done it but when I try to use this command: compiz --replace my laptop crashes, so I could not move any windows or terminal! I could not minimize or close them! What I am supposed to do for solving this crash???

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• What to do with my "unmounted drive"?

  - by Taylor Guistwite

  I just recently followed the tutorials on http://www.ubuntu.com/download/ubuntu/download for installing the ubuntu server onto my 1TB Seagate External. I was planning on using this to install it on my macbook and in these instructions it states to preform this line of code Run diskutil unmountDisk /dev/diskN (replace N with the disk number from the last command; in the previous example, N would be 2) Now my HD prompts "The disk you inserted was not readable by this computer". Would I just run diskutil mountDisk /dev/diskN in order to be able to access all my files again? here is a screenshot to the instructions i followed http://i17.photobucket.com/albums/b97/hello_screamo/Screenshot2011-11-11at113914AM.png

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• What are the benefits vs costs of comment annotation in PHP?

  - by Patrick

  I have just started working with symfony2 and have run across comment annotations. Although comment annotation is not an inherent part of PHP, symfony2 adds support for this feature. My understanding of commenting is that it should make the code more intelligible to the human. The computer shouldn't care what is in comments. What benefits come from doing this type of annotation versus just putting a command in the normal PHP code? ie- /** * @Route("/{id}") * @Method("GET") * @ParamConverter("post", class="SensioBlogBundle:Post") * @Template("SensioBlogBundle:Annot:post.html.twig", vars={"post"}) * @Cache(smaxage="15") */ public function showAction(Post $post) { }

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• Is it possible to auto-mount sshfs

  - by Mark D

  Is it possible to auto-mount a remote FS using sshfs upon instantiating a proper VPN connection? Allow me to explain the scenario, I'm working remotely, to do that it helps if I can mount my home dir from a server in the office. To do that I need to vpn in. So within network manager I select the relevant VPN and connect. It connects but now I have to drop to the command line and mount my home dir on several machines. If I forget to do one machine my local dev environment isn't as efficient. I suppose I could write a quick bash script to do this but I'd rather get it running automatically when I connect.

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• After update, audio won't play throw hdmi cable

  - by ckhenderson

  Yesterday (June 7th) I faithfully updated a bunch of stuff through update manager (though I'm not sure what since I never read what I updated any more because I'm a bad person). Afterward, I discovered that I could no longer play audio through my tv via HDMI. The sound settings menu seems to have completely changed and the shell script that I wrote a week ago (with much pain and effort as I had never before written a shell script) to toggle between my laptop speakers and the HDMI cable output no longer works. When I type in pactl set-card-profile 0 output:hdmi-surround in the command line I get Failure: No such entity Presumably this means something with Pulse Audio changed but, while I'm learning a lot about the inner workings of Ubuntu/Linux, I'm not an expert and would love some help. EDIT: So I noticed that pacmd set-card-profile 0 output:hdmi-stereo seems to get everything working. Still, shouldn't there be a way to do this through the GUI as well?

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• Recovering a deleted partition

  - by Kishore

  I had a dual boot PC running Ubuntu 12.04 and Windows 7. About a month back, I deleted the Ubuntu partition via the disk management utility (I do not remember whether or not I formatted the partition after performing this action). I ran into some grub issues and used lilo to solve the issue. I followed the simple instructions described in this blog post. I now realize that there were some files in the Ubuntu installation that I need. Of course, I backed up the data, but not this folder apparently. Is there any way to get the data back? I tried following the process suggested on another post on askubuntu (suggesting the use of TestDisk), but was not able to even install TestDisk. The live USB I use is running Ubuntu 12.04 and it does not have a synaptic package manager. Installing from the terminal does not work because even after I type: sudo apt-get update sudo apt-get upgrade the command: sudo apt-get install testdisk fails to work.

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