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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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• package update in ubuntu on vitual box

  - by Ayusman

  while following one of the tutorials I needed to install a curl package. Here are my system configuration: Virtualbox 4.1 on Windows 7 64 bit. I have installed ubuntu 12.04 on the virtual box. When I try the following: sudo apt-get install curl I see the following errors: [sudo] password for userMe: Reading package lists... Done Building dependency tree Reading state information... Done Package curl is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'curl' has no installation candidate userMe@userMe-ubuntu:~$ When I try the same on a direct installation of ubuntu on a laptop (not a virtual machine) there is no problem. I am assuming this may be because of network settings. Please note that my work PC is in a corporate network and uses auto proxy settings (using a .pac file) for internet access etc. Any help will be appreciated.

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• Why is the superblock last mount time in the future?

  - by user69541

  Future time: Since installing Ubuntu 12.04, I regularly have to fun fsck and reset my clock because it shows a 'future time' : Err.Msg. "superblock last mount time is in the future by less than a day, probably due to hardware clock being incorrectly set." FIXED. According to what I have read, it looks like I'm in the right place to get an answer. Following are my feeble attempts to rectify this annoyance: mjh@mjh-desktop:~$ sudo service ntp start [sudo] password for mjh: ntp: unrecognized service mjh@mjh-desktop:~$ mjh@mjh-desktop:~$ sudo apt-get install update Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package update mjh@mjh-desktop:~$ sudo service ntp start ntp: unrecognized service mjh@mjh-desktop:~$ Suggestions? Matthew

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• What good free forum engines are out there? [closed]

  - by user1306322

  I'm looking for a forum engine for my website, which will look modern, easy to use and follow lengthy discussions. Most of the times people hear "forum" they imagine unresponsive phpBB with terrible color scheme and unnecessarily huge user info sections (avatar, signature) about 600px high each, which make it impossible to see more than 5 posts on a really big screen. I'd like it to be the other way around with my future forum. Features I'd like to see: Clean, transparent section/thread selection, Must not have "message posted, you will be redirected to wherever" screens, 1-click message posting (captchas are ok, but not the ones that erase the whole post when you mistype), Tree hierarchy for comments to posts

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• Multi- authentication scenario for a public internet service using Kerberos

  - by StrangeLoop

  I have a public web server which has users coming from internet (via HTTPS) and from a corporate intranet. I wish to use Kerberos authentication for the intranet users so that they would be automatically logged in the web application without the need to provide any login/password (assuming they are already logged to the Windows domain). For the users coming from internet I want to provide traditional basic/form- based authentication. User/password data for these users would be stored internally in a database used by the application. Web application will be configured to use Kerberos authentication for users coming from specific intranet ip networks and basic/form- based authentication will be used for the rest of the users. From a security perspective, are there some risks involved in this kind of setup or is this a generally accepted solution? My understanding is that server doesn't need access to KDC (see Kerberos authentication, service host and access to KDC) and it can be completely isolated from AD and corporate intranet. The server has a keytab file stored locally that is used to decrypt tickets sent by the users coming from intranet. The tickets only contain username and domain of the incoming user. Server never sees the passwords of authenticated users. If the server would be hacked and the keytab file compromised, it would mean that attacker could forge tickets for any domain user and get access to the web application as any user. But typically this is the case anyway if hacker gains access to the keytab file on the local filesystem. The encryption key contained in the keytab file is based on the service account password in AD and is in hashed form, I guess it is very difficult to brute force this password if strong Kerberos encryption like AES-256-SHA1 is used. As the server has no network access to intranet, even the compromised service account couldn't be directly used for anything.

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• MacBook 5,1 - cant change brightness on 12.04

  - by RunnerUp

  I'm a total newbie to Ubuntu and recently decided to give it a go on my early 2009 Alu MacBook. For about a week now I've been trying to get the brightness controls to work. I've tried the following: Brightness controls doesn't work on a MacBook Pro 5.5 (ubuntu 12.04 LTS) https://help.ubuntu.com/community/MacBookPro5-5/Precise#LCD None of it seems to work. Next option was to try the Nvidia-bl-dkms drivers, but aftert installing the Mactel PPA I just get this: Reading package lists... DoneBuilding dependency tree Reading state information... Done E: Unable to locate package nvidia-bl-dkms Any help would be much appreciated as my eyes are going to fall out soon with the brightness maxed out.

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• I have a perl script that is supposed to run indefinitely. It's being killed... how do I determine who or what kills it?

  - by John O

  I run the perl script in screen (I can log in and check debug output). Nothing in the logic of the script should be capable of killing it quite this dead. I'm one of only two people with access to the server, and the other guy swears that it isn't him (and we both have quite a bit of money riding on it continuing to run without a hitch). I have no reason to believe that some hacker has managed to get a shell or anything like that. I have very little reason to suspect the admins of the host operation (bandwidth/cpu-wise, this script is pretty lightweight). Screen continues to run, but at the end of the output of the perl script I see "Killed" and it has dropped back to a prompt. How do I go about testing what is whacking the damn thing? I've checked crontab, nothing in there that would kill random/non-random processes. Nothing in any of the log files gives any hint. It will run from 2 to 8 hours, it would seem (and on my mac at home, it will run well over 24 hours without a problem). The server is running Ubuntu version something or other, I can look that up if it matters.

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• installing win7 x64 in VirtualBox - error driver device missing

  - by chrisjlee

  After creating a vhd and going through that process i'm unable to install win7 x64. I've went through various settings and trying to get it right. It'll boot the windows install but then indicate the following error (image included too): A required cd/dvd drive device driver is missing. If you have a driver floppy disk, CD, DVD, or USB flash drive, please insert it now. Note if the windows installation media is in the CD/DVD drive, you can safely remove it for this step. I've also set up my storage tree like so: Would anyone know what the issue could be? It's asking for cd/dvd device drivers and i'm unable to install.

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• How to install g++ in Ubuntu 14.04?

  - by Apoorva sahay

  I have recently installed ubuntu 14.04 in virtual box. Now I want to install g++ 4.7 in it. I am trying this command in terminal but its not working. sudo apt-get install g++-4.7 Reading package list... Done Building dependency tree Reading state information... Done E: Unable to locate package g++-4.7 E: Couldn't find any package by regex 'g++-4.7' But I find gcc was there with Ubuntu 14.04 installation itself. How could I install g++ in ubuntu 14.04 and any version of g++ abouve 4.7.2 is fine with me.

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• TFS Backup Plan Wizard Tool

  - by Enrique Lima

  With the release of the “September – 2010” TFS 2010 Power Tools, came an addition to the Team Foundation Server Administration Console.  This addition is the Team Foundation Backups Tree item.  The tool is used to create backup plans and to work with it you run through a wizard, just like you would in configuring TFS or any of the extensions it has. The areas covered through the tool include: Backup to a Network Backup Path, retention configuration. Under Advanced Options, the extension to be used for the Full and Transactional backups. The capability to include external databases, meaning, include the reporting databases and SharePoint databases as part of the plan. There are further options as you can see, that includes being able to define a task scheduler account, be able to set alerts for notifications on execution of the plans, and last the option to configure the schedule for the plan execution.  All in all a very good tool and great way to safeguard the investment you’ve made.

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• To canvas, or not to canvas, when building browser-based games?

  - by Letharion

  Background: I have extensive development background, but the last time I coded a game was many years ago. My Javascript skills are quite limited, and I intend to improve them by building a simple game — Tetris, Pac-man, or something of that complexity level. Question: It seems to me that a fundamental choice I need to make is whether I should render on a <canvas> element or not. With a canvas, I have basic tools for rendering points, lines, and more complex things on top of that. Presumably there are, or will be, also various frameworks to help with this. Without a canvas, I could keep my objects in the DOM-tree, like a regular webpage, only quite complex, with many overlapping elements. Is one approach better than the other? Are they mutually exclusive? How do I know which to pick?

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• How to access a Windows share from Ubuntu?

  - by Cyberscooty

  In Ubuntu 12.04 and previous versions, I can easily install smbfs and running smb://server/share from Nautilus works! But, in 12.10, I can't install smbfs. Trying to install it from the terminal, I see this that the package is obsolete: Reading package lists... Done Building dependency tree Reading state information... Done Package smbfs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: cifs-utils E: Package 'smbfs' has no installation candidate How can access my Windows share easily in 12.10?

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• Not able to create Live CD

  - by Jagannath Harati

  I downloaded 12.04.1 on a Windows 7 machine. I burnt a DVD from the ISO image using Windows Disc Image Burner. I had 'verify disc' on. The disc was created successfully with no errors. I was not able to use this disc for installing Ubuntu on another Windows 7 machine. I do not get the Welcome Screen on booting. I find that on the disc I burnt, I do not find bin, disc tree, programs directories and cdromupgrade, start.*, ubuntu* files. I found the boot directory and WUBI executable file. I tried downloading several times with the same result. I had similar problem earlier with 11.04. Can you please let me where the problem is?

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• Attempted hack on VPS, how to protect in future, what were they trying to do?

  - by Moin Zaman

  UPDATE: They're still here. Help me stop or trap them! Hi SF'ers, I've just had someone hack one of my clients sites. They managed to get to change a file so that the checkout page on the site writes payment information to a text file. Fortunately or unfortunately they stuffed up, the had a typo in the code, which broke the site so I came to know about it straight away. I have some inkling as to how they managed to do this: My website CMS has a File upload area where you can upload images and files to be used within the website. The uploads are limited to 2 folders. I found two suspicious files in these folders and on examining the contents it looks like these files allow the hacker to view the server's filesystem and upload their own files, modify files and even change registry keys?! I've deleted some files, and changed passwords and am in the process of trying to secure the CMS and limit file uploads by extensions. Anything else you guys can suggest I do to try and find out more details about how they got in and what else I can do to prevent this in future?

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• Is there an apt command to download a deb file to the current directory?

  - by Lekensteyn

  I am often interested in the installation triggers (postinst, postrm) or certain parts (/usr/share or /etc) of packages. Currently, I am running the next command to retrieve the source code: apt-get source [package-name] The downside is, this file is often much bigger than the binary package and does not reflect the installation tree. Right now, I am downloading the packages through http://packages.ubuntu.com/: Search for [package-name] Select the package Click on amd64/i386 for download Download the actual file This takes too long for me and as someone who really likes the shell, I would like to do something like the next (imaginary) command: apt-get get-deb-file [package-name] I could not find something like this in the apt-get manual page. The most close I found was the --download-only switch, but this puts the package in /var/cache/apt/archives (which requires root permissions) and not in the current directory.

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• What Part of Your Project Should be in Source Code Control?

  - by muffinista

  A fellow developer has started work on a new Drupal project, and the sysadmin has suggested that they should only put the sites/default subdirectory in source control, because it "will make updates easily scriptable." Setting aside that somewhat dubious claim, it raises another question -- what files should be under source control? And is there a situation where some large chunk of files should be excluded? My opinion is that the entire tree for the project should be under control, and this would be true for a Drupal project, rails, or anything else. This seems like a no-brainer -- you clearly need versioning for your framework as much as you do for any custom code you write. That said, I would love to get other opinions on this. Are there any arguments for not having everything under control? Is this sysadmin a BOFH?

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• I'm looking for websites with programming problems that I can practice [on hold]

  - by Spentak

  I want to become a more skilled programmer. I also want to do it through Objective-C and iOS. What websites or programs that you know of have problems that I can solve (with the answers)? I have failed some programming tests for jobs (such as "Given 2 values in a Binary Tree - how do you find the lowest common ancestor?) and I want to become a better engineer. I have developed 54 iOS/Android apps to date, but my core CS Skills apparently are rusty/bad. I have looked at TopCoder - but there aren't very many competitions going on, the website is terrible, and there does not appear to be anything that really supports Objective-C/iOS Websites?

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• How to fix "Could not open lock file" because "Permission denied"?

  - by user66498

  Whenever trying to install any software and update manger, I get an error stating Package operation failed The installation or removal of a software package failed When I run sudo apt-get update I got this result: conan51xd@conan51xd-Lenovo-B470:~$ sudo apt-get -f install [sudo] password for conan51xd: Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. conan51xd@conan51xd-Lenovo-B470:~$ apt-get update E: Could not open lock file /var/lib/apt/lists/lock - open (13: Permission denied) E: Unable to lock directory /var/lib/apt/lists/ E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

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• How to tell Wine that I have changed CD when mounting them virtually on a netbook with no CD drive?

  - by glenatron

  I have been trying to catch up with some of the old games from way back that are about right for my little Aspire One netbook through Wine. I've run into a problem Baldurs Gate, however, which is that I can't change CD. Obviously, I don't have a CD drive, so I have copied the CD content onto an external hard drive and I'm using a mount command with the loopback option to persuade the game that the CD is present. This allowed installation to work correctly and works fine to run it and to play the content from the first CD. However, when the game asks for CD2, I'm stuck. If I mount the CD2 ISO to the CD Rom path it doesn't appear to respond, whether or not I have first unmounted CD1. When I ask Wine to show me the CD drive it contains the right data, but it seems as though whatever signal would be interpreted by Windows to mean the CD drive has been closed isn't being sent. Does anyone know of a way to do this, or am I barking up the wrong tree and there is something else I need to do?

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• OO Software Architecture - base class that everything inherits from. Bad/good idea?

  - by ale

  I am reviewing a proposed OO software architecture that looks like this: Base Foo Something Bar SomethingElse Where Base is a static class. My immediate thought was that every object in any class will inherit all the methods in Base which would create a large object. Could this cause problems for a large system? The whole architecture is hierarchical.. the 'tree' is much bigger than this really. Does this sort of architecture have a name (hierarchical?!). What are the known pros and cons?

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• Not able to install nspluginwrapper on 64 bit Ubuntu 12.10

  - by user99305

  This is a brand new installation of 64 bit Ubuntu 12.10. I am not able to install nspluginwrapper. Here is the error message that I get: $ sudo apt-get install nspluginwrapper 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: nspluginwrapper : Depends: nspluginviewer (= 1.4.4-0ubuntu4) but it is not installable E: Unable to correct problems, you have held broken packages. I need nspluginwrapper to get Citrix receiver to work.

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• Unable to install Emerald theme manager in Ubuntu 12.04?

  - by kernel_panic

  I learnt how to install ETM from here But when i try to install i get `ubu@sanjay-pc:~$ sudo apt-get install git autoconf libtool libwnck1.0-cil-dev libwnck-dev intltool libdecoration0-dev gawk 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.code The following information may help to resolve the situation: The following packages have unmet dependencies: libdecoration0-dev : Depends: libdecoration0 (= 1:0.9.7.6-0ubuntu1) but 1:0.9.7.8-0ubuntu1 is to be installed E: Unable to correct problems, you have held broken packages. ` Help Needed

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• XNA: Retrieve texture file name during runtime

  - by townsean

  I'm trying to retrieve the names of the texture files (or their locations) on a mesh. I realize that the texture file name information is not preserved when the model is loaded. I've been doing tons of searching and some experimenting but I've been met with no luck. I've gathered that I need to extended the content pipeline and store the file location in somewhere like ModelMeshPart.Tag. My problem is, even when I'm trying to make my own custom processor, I still can't figure out where the texture file name is. :( Any thoughts? Thanks! UPDATE: Okay, so I found something kind of promising. NodeContent.Identity.SourceFilename, only that returns the location of my .X model. When I go down the node tree he is always null. Then there's the ContentItem.Name property. It seems to have names of my mesh, but not my actual texture file names. :(

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• How selective do we need to be for an index to be used?

  - by TiborKaraszi

  You know the answer already: It depends. But I often see some percentage value quoted and the point of this post is to show that there is no such percentage value. To get the most out of this blog post, you should understand the basic structure for an index, i.e. how the b+ tree look like. You should also understand the difference between a clustered and a non-clustered index. In essence, you should be able to visualize these structures and searches through them as you read the text. If you find...(read more)

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• X 11 Development Librararies

  - by user2592799

  I am new to ubuntu, I am using ubuntu 13.10, and trying to install NS-2. During the installation I am facing the following error; X11/Xlib.h: No such file or directory Then i tried to install sudo apt-get install libx11-dev This time I am facing the following error; Reading package lists... Done Building dependency tree Reading state information... Done Package libx11-dev is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source E: Package 'libx11-dev' has no installation candidate I have no idea how to deal it, Please help Thanks in advance

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