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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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• Unit testing a text index

  - by jplot

  Consider a text index such as a suffix tree or a suffix array supporting Count queries (number of occurrences of a pattern) and Locate queries (the positions of all the occurrences of a pattern) over a given text. How would you go about unit testing such a class ? What I have in mind is to generate a big random string then extract a random substring from this big string and compare the results of both queries with naive implementations (such as string::find). Another idea I have is to find the most frequent substring of length l appearing in the original string (using perhaps a naive method) and use these substrings for testing the index. This isn't the best way, so what would be a good design of the unit tests for a text index ? In case it matters, this is in C++ using google test.

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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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• Shouldn't all source code be plain text? [on hold]

  - by user61852

  Some developing environment/languages save the source code you write in a binary/propietary format that you cannot see or edit with a generic text editor. I'm not talking about compiled code, but the source code. An example could be PowerBuilder and Oracle Forms. It's ok you use proprietary technology if you want, but not being able to open the source code you wrote, in a simple editor, if only to read it, seems like a very strict form of vendor lock-in. Also this prevents you from using text-based version controls that can show you the difference between two versions in a line-by-line base. If the code is plain text, you don't need a license in order to just open it, see it and learn from it. Should it be a golden rule to avoid vendor lock-in to avoid technologies that save your source code to anything but plain text files ?

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• What is the good way of sharing specific data between ViewModels

  - by voroninp

  We have IAppContext which is injected into ViewModel. This service contains shared data: global filters and other application wide properties. But there are cases when data is very specific. For example one VM implements Master and the second one - Details of selected tree item. Thus DetailsVm must know about the selected item and its changes. We can store this information either in IAppContext or inside each concerned VM. In both cases update notifications are sent via Messenger. I see pros and cons for any of the approaches and can not decide which one is better. 1st: + explicitly exposed shared proerties, easy to follow dependencies - IAppContxt becomes cluttered with very specific data. 2nd: the exact opposite of the first and more memory load due to data duplication. May be someone can offer design alternatives or tell that one of the variants is objectively superior to the other cause I miss something important?

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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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• I'm the .1x programmer at my company. How can I best contribute?

  - by invaliduser

  I work at a newly-minted startup of five people. We have a Ph. D in machine learning, a former member of the RSpec core team, and the guy who compiles the Git binary for OS X. That's just the employees; the founder has a Ph. D and was CTO for a multi-billion-dollar corporation before leaving to start a (successful) startup, and has now left that to start this one. We also might get a guy with a Ph. D in math. Aaaaaaaaand then there's me, college-dropout intern. I think I'm pretty smart and I'm reading non-stop, but the delta of experience, skill, and knowledge between me and my co-workers is just breathtaking. So put yourself in their shoes: you've got a bright young intern who has a lot to learn but is at least energetic. What would be annoying? What use would you hope to get out of him in the here and now? What would be pleasantly surprising if it happened?

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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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• copying same file name from client to server using tcp protocol with same size of file

  - by user3686570

  This is the client and server program where a client sends a file to server to save in the server. There is a issuse in that same file name is not getting copied on the server with same file size Please help me in this Client program import socket import sys s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.connect(("localhost",9999)) path=raw_input("Please enter the complete PATH of your file : ") f=open (path, "rb") l = f.read(256) while (l): s.sendall(l) l = f.read(10000) s.close() Server Program import socket import sys s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.bind(("localhost",9999)) s.listen(10) while True: s, address = s.accept() print address i=1 f = open( str(i),'wb') #open in binary #i=i+1 while (True): l=s.recv(256) #while (l): f.write(l) l=s.recv(256) print 'File recieve succesfully' f.close() #sc.close() s.close() Thanks in advance

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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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• What is the most serious limitation of Unity?

  - by ashes999

  Having read this heated question about Unity vs. UDK vs. ID something, I'm curious to know: what the repeatedly-hit, most crippling limitation(s) of Unity? In order to keep this question non-subjective, again, I'm talking about the top repeated offender(s) of Unity are. This is something that, as a Unity user, you really wish someone had told you about before you started using it. I have heard from someone that Unity does not deal well with version control, since it generates a lot of binary files (which are un-diffable). This, to me, is not really crippling as I work alone. Thoughts?

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• Isn't class scope purely for organization?

  - by Di-0xide

  Isn't scope just a way to organize classes, preventing outside code from accessing certain things you don't want accessed? More specifically, is there any functional gain to having public, protected, or private-scoped methods? Is there any advantage to classifying method/property scope rather than to, say, just public-ize everything? My presumption says no simply because, in binary code, there is no sense of scope (other than r/w/e, which isn't really scope at all, but rather global permissions for a block of memory). Is this correct? What about in languages like Java and C#[.NET]?

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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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• "Unable to connect" to getdeb.net, how do I fix it?

  - by Nirmik

  i want to know what this error means and how to fix it? The following is the output on the terminal- W: Failed to fetch http://archive.getdeb.net/ubuntu/dists/precise-getdeb/Release.gpg Unable to connect to archive.getdeb.net:http: W: Failed to fetch http://archive.getdeb.net/ubuntu/dists/precise-getdeb/apps/binary-i386/Packages Unable to connect to archive.getdeb.net:http: W: Failed to fetch http://archive.getdeb.net/ubuntu/dists/precise-getdeb/apps/i18n/Translation-en_IN Unable to connect to archive.getdeb.net:http: W: Failed to fetch http://archive.getdeb.net/ubuntu/dists/precise-getdeb/apps/i18n/Translation-en Unable to connect to archive.getdeb.net:http: E: Some index files failed to download. They have been ignored, or old ones used instead.

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• How do I reduce package content on a custom install CD?

  - by Pete Ashdown

  I normally do all my installs via PXE server, but I'm building a custom CD for kvm installs that are not on the same vlan as my PXE server. I would prefer this CD was as small as possible and it fetched packages from the network like netinstall mini.iso CD does, but netinstall doesn't mount /cdrom like the server install CD does. I need the cdrom for preseed. I've got my custom server install CD working, but it is still ~700MB. Trying to modify "dists/lucid/main/binary-amd64/Packages.gz" gives me no love as it complains that I've got a corrupt Packages.gz no matter what I do. I'd rather the preseeded mirror was used rather than CD once it gets the cdrom setup. Any ideas?

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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 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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• 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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• Error when trying to install Menulibre in Lubuntu 12.10 [closed]

  - by cipricus

  Possible Duplicate: How can I fix a 404 Error using a PPA? When trying to add a PPA (to install menulibre) I get these errors: Err http://ppa.launchpad.net quantal/main Sources 404 Not Found Err http://ppa.launchpad.net quantal/main i386 Packages 404 Not Found W: Failed to fetch http://ppa.launchpad.net/menulibre-dev/devel/ubuntu/dists/quantal/main/source/Sources 404 Not Found W: Failed to fetch http://ppa.launchpad.net/menulibre-dev/devel/ubuntu/dists/quantal/main/binary-i386/Packages 404 Not Found Why is that and how to solve it? As the question was flagged as duplicate: I should clarify that I want to know why i cannot add a source that seems active in launchpad, and how could i add it and install the program, not just how to remove the error by removing the source in the software sources list Menulibre seems available in software sources. Why can't I install it? I'm in Lubuntu 12.10

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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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• Collision representation in game overworlds

  - by Akroy

  I'm implementing a 2D overworld where one can walk through an area that is not tile based. I was wondering the best way to implement collisions. In the past when I've done similar things, I've used one image (or set of images) to show an elaborately drawn world and then a second binary image that does nothing but differentiate "wall" and "not wall". Then, I'd use the first for all drawing to the screen, but the second for collision detection. Having another image of the same size to represent collisions seems like lots of overhead. Is there a better way to handle this? (I'm currently using C++ with SDL, although I'm more interested in general concepts)

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• Unable to locate essential development tools Ubuntu 11.04

  - by Anita 7

  I'm using Ubuntu 11.04 (VMware). I aim to implement OpenMP. Im using gcc 4.5 compiler. I tried to install it by using the command sudo apt-get install gcc 4.5. Afterwards I proceed with gcc -fopenmp foo.c BUT the output was: gcc: foo.c: No such file or directory gcc: no input files –. Now I tried to install the package by using : ubuntu@ubuntu:~$ sudo apt-get install essential Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package essential. I also tried apt-cache search essential and after that sudo apt-get install essential-dev But the same error again, E: Unable to locate package essential-dev Any solution,please? Do I need to download any package? What should I do? Thank you in advance :))

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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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• No such file but the file is there!

  - by user288757

  I'm trying to compile a C++ file with some includes. My main file (well I didn't make it hdf5_getters includes a file which includes the file hdf5.h, also not my design but it's a downloaded library. Every time I try to compile it I get the error message that the file hdf5.h does not exist while it clearly does. I started reading on the internet and people say it can happen because it's a 32bit binary running on a 64bit architecture. But I'm running a 32bit Ubuntu so that can't be it... I'm out of ideas, if anyone can help me please :) This is the errormessage with commands: make hdf5_getters g++ -c -Wall -std=c++0x -O2 -c hdf5_getters.cc In file included from H5Cpp.h:20:0, from hdf5_getters.cc:34: H5Include.h:17:18: fatal error: hdf5.h: No such file or directory #include <hdf5.h> ^ compilation terminated. make: *** [hdf5_getters.o] Error 1

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