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• How to run Virtualbox on bridged and host-only networks?

  - by ril44

  I wish to run VirtualBox with my Ubuntu laptop on the home network (so the desktop PC can access it through the router) and also be able to ssh into the VirtualBox from host on the go (different network or with no internet). Previously, the only network adapter on the VB instance was a 'bridged connection' adapter. This allowed me to access the internet on the guest VB and for the other computers on the LAN + host to access it. However, whenever I took my laptop off the network, I could no longer access the guest from host. I read that I needed to enable a host-only adapter to access it off the network and a NAT adapter is used to access the internet from guest. My question is can I run a host-only adapter + a NAT adapter alongside a bridged network adapter in VirtualBox? I am confused what I would put inside /etc/hosts? Would I put both IP's (host-only and bridged) with the same servername in /etc/hosts?

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• How do you know when to split an object method into 2 or more other methods?

  - by blacktie24

  Hi, I know this is a very basic question, but I sometimes find myself struggling to figure out when to split a single object method into multiple methods. For example, I am trying to set up an ACL using Zend_Acl and Zend_Auth, as shown in this tutorial: http://devzone.zend.com/article/1665. However, I am wondering if the My_Plugin_Auth::preDispatch() method should invoke calls to a method called authenticate() and a method called authorize(), instead of having everything lumped in under preDispatch(). I was thinking that this would make the code more readable and encapsulate the logic into its smaller parts, but i'm not sure if this is reason enough.

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• Installing multi-boot Linux system

  - by user94924

  I have a dual (XP/Linux) boot Compaq Presario S4500UK with a couple of spare partitions on the boot drive which I want to use for testing different Linux distros/configs before installing them on "live" machines. I tried this with Oneiric which worked fine until I came to uninstalling the test system. Fortunately Oneiric uses Grub2 and so redirecting the bootloader to work from the original Linux partition was a piece of cake - if a bit annoying. I now need to do some tests on Hardy and DSL (Damned Small Linux), neither of which use Grub2. Question: Is it possible to install a test operating system without adding/replacing the bootloader (ie so I can still use Grub2 from the original partition with its nice interface and recovery facilities)? Is there another way of uninstalling/decommisioning a test OS which doesn't trash the boot loader? (The only way I know to do this is by deleting/reformatting the partition which takes with it the bootloader which is in that partition). Any help would be much appreciated. Tks jg1

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• Using a GPL licensed library in a commercial app

  - by user577616

  I develop an android application and in my app I use a libary (jar) that I download from the internet. This jar is open-source under the "GNU General Public License v2". I tried to read the text of the license but had difficulty understanding it. My question is: can I use this libary without changing nothing in the jar in a commercial application? I will be making profit from selling my app which uses this GPL-ed .jar file. If possible, I would like to avoid converting my application to open-source.

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• Installed Ubuntu using WUBI due to lack of CD Drive

  - by Chantelle

  I have installed 12.04 via WUBI because my computer does not have a CD Drive. Is there any way that I can delete Windows 7 from my computer and use the whole HD for Ubuntu? I ask this question because for one reason or another I cannot boot from a boot-able USB stick (either in Windows or Ubuntu, however the USB port works because I am able to use my cell phone's tethering plan using all the USB ports to connect to the Internet). Edit: Just found out the problem. Eee PC Model 1018p's do not boot from any format other than FAT and FAT16 and not FAT32.

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• Will I get penalised by google for overflow hidden? [duplicate]

  - by Rascal Capac

  This question already has an answer here: How bad is it to use display: none in CSS? 5 answers I have 2 divs next to each other, div A and div B. Div A displays a whole wordpress post and div B displays about 15 excerpts of posts with the same tag. To get this looking nice I set the hight of div B to be the same as the hight of div A with javaScript. This means alot of post excerpts will be hidden due to overflow hidden on div B. Will Google penalise me for this, and if so, how can I make this work and still please Google? Ps. I would gladly prevent the excerpts from being indexed but the main post must be indexed Ds.

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• Virtualbox, How do I change guest (precise) resolution to 16:9 (1920x1080) instead of default 4:3?

  - by CHolmstedt

  There are many questions about resolution issues on askubuntu but no question/solution seems to solve my issue. I've a 12.04/precise host system and installed Ubuntu 12.04/precise as guest system as well. After installation I had the option of selecting 1024x768 (4:3) and 800x600 (4:3) as resolution in display settings. After installing guest additions the options 1280x960 (4:3) and 1440x1050 (4:3) was added to the list. Now 4 in total all having the 4:3 ratio. I then activated full screen mode (host+f) and got the guest running in native 1920x1200 (16:10) for my screen. After deactivating full screen two more options had been added to the resolutions dropdown list, 1920x1200 (16:10) and 1600x1200 (4:3). I want to run the guest in 1920x1080 (16:9) so I can easily record screencasts in "full-hd". Last time I had this problem the solution was to run "VBoxManage controlvm nameofyourVM setvideomodehint width height colordepth" command from the host but now I want to know if there is any easier way to solve this?

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• Problems in detecting pen drive

  - by Mzk

  First of all, I don't have an issue with detecting my pen drive on 32-bit ubuntu 12.04. It can detect my pen drive very fast when plug in. Then, I bought a laptop installed with windows 7 64-bit operating system. I have decided to installed ubuntu alongside with win7. To be precise, I installed uBuntu 12.04.3 64-bit. It appears that every time I plug in my pen drive, it is either very slow automatically mount. It is even worst that the pen drive won't mount when plug in to usb 3.0 port. Anyone? UPDATE: My laptop can detect pen drive now either 3.0 or 2.0 port. The question is why the pen drive very slow shows up?

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• Should I keep separate client codebases and databases for a software-as-a-service application?

  - by John

  My question is about the architecture of my application. I have a Rails application where companies can administrate all things related to their clients. Companies would buy a subscription and their users can access the application online. Hopefully I will get multiple companies subscribing to my application/service. What should I do with my code and database? Seperate app code base and database per company One app code base but seperate database per company One app code base and one database The decision involves security (e.g. a user from company X should not see any data from company Y) performance (let's suppose it becomes successful, it should have a good performance) and scalability (again, if successful, it should have a good performance but also easy for me to handle all the companies, code changes, etc). For the sake of maintainability, I tend to opt for the one code base, but for the database I really don't know. What do you think is the best option?

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• Tell the kernel to strongly cache a particular directory

  - by silviot

  This question is a rephrasing of Optimizing EXT4 performance. I have a directory that contains build files, most very small, but totaling 5.6G. I usually access the same subset of files (some thousands, for some tens of megabytes) over and over again. The subset changes daily (different projects, different versions of libraries). What takes longer when I use it seem to be disk seeks. For example if I do a du twice the second time it takes as much time as the first, and disk activity is similar. Ideally I'd like to tell the kernel to allocate X Mb to the metadata and Y to data in the folder, like the options for nfs cache. Is it possible in some way, other than mounting nfs from localhost and caching it to a ramdisk?

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• Ubuntu on galaxy note II

  - by user131918

  I recently bought Samsung Galaxy Note II on android 4.1. It was my idea to try to turn it into a pc and I bought a micro-keyboard for the same purpose. I had hoped there would be an app for OpenOffice, but there isn't. Now i see that ubuntu may be installed on smart phones. I already have ubuntu - including OpenOffice - on my laptop. My question is: is it possible to install ubuntu to galaxy note II, and if so, does it include office programs and other ubuntu programs? Thank You And thank you so much for an alternative to Microsoft.

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• After a domain change, what can I do to recover lost traffic, rankings, impressions etc? [duplicate]

  - by Felix

  This question already has an answer here: How do I rename a domain and preserve PageRank? 3 answers I moved my site to a legacy exact-match domain I purchased about a couple of months ago. I have seen significant reduction in traffic, impressions, and rankings. I did all the right steps/best practices: change of address in GWT, map old site hierarchy and match to new site for 301 redirects etc. Indexation has gone through the Google process: old site has all but dissappeared from he index and new site is indexed, albeit with some 404 errors which I am addressing. Does anyone else who has gone through eh domain change process have any thoughts/advice? Thanks!

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• Getting through a lengthy book?

  - by Mr_Spock

  This may seen like a weird question, but since we're challenged--as engineers--to constantly adapt to changing technologies, we always find ourselves buried in documentation. That said, we also need to consider that time is of the essence because people want their stuff fixed and improved with little hesitation if any. How do you get through lengthy manuals, books/manuals within a short period of time? Take for example: "The Linux Programming Interface," by Michael Kerrisk, which is roughly 1500 pages in length. How would you get through a monster of a book like this if you're pressed for time while still learning most of the material?

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• Downsides of using Lubuntu on a good computer [closed]

  - by Yamitatsu

  I have a simple question but yet, hard to find any anwser on it. Are there any downsides of using Lubuntu on a good laptop ? Ihe one I purchased would run Ubuntu really good, but I like the look & feel of Lubuntu. I mainly use it to code or watch movie / listen music, usually a load of applications opened at the same time, 20+ tabs on multiple web browser, etc.. Since Lubuntu is lightweight, i wonder if it lacks of some useful functions or something like that.

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• Experience embedding javascript

  - by deft_code

  I'm looking into scripting languages to embed in my game. I've always assumed Lua was the best choice, but I've read some recent news about embedding V8 as was considering using it instead. My question is two fold: Does anyone with experience embedding v8 (or another javascript engine) recommend it? How does it compare with embedding Lua? I like that v8 has a c++ embedding API. However Lua API has had lots of time to be refined (newer isn't always better and all that). Note: At this point I'm not too concerned with which is better language or which library has better performance. I'm only asking about ease of embedding.

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• Is it possible to use binary nvidia driver with GeForce 7300 SE?

  - by jrennie

  I have an Nvidia GeForce 7300 SE. It worked fine with the nvidia driver when I was using 10.10. When I upgraded to 12.04, the (nvidia-current) binary driver failed---I couldn't even get a login screen. The "nouveau" driver works okay, but the display is quite sluggish. I've read about the fact that my GeForce is blacklisted (here and here). But, when I tried the suggested workaround of using nvidia-173, I discovered that it wouldn't install because of a failed dependency: xorg-video-abi-10 (Package not available). The "precise" nvidia-173 package page notes this (dependency bug?) So, my real question: is there a GeForce 7300 SE workaround for 12.04?

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• How do I script to open a set of programs each on specific desktop?

  - by Jahn

  I looked around for a while and could not figure out the answer to my following problem: I have a setup of six desktops on Ubuntu 12.04 with Unity. On start up, every morning, I go through a routine of opening the same five or six programs. I open each on a specific desktop. I would like to have this automated. Is there a way to script or configure this? Additional question: To further complicate the matter, I am running two screens in twin view mode. I actually need to start each program on a specific screen, preferably in full screen. Thanks in advance, Jahn

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• IE10 : Microsoft dévoile les détails du navigateur dans Windows 8, tuiles de navigation, ergonomie et sécurité

  IE10 : Microsoft dévoile les détails du navigateur dans Windows 8 tuiles de navigation, ergonomie, support du tactile et améliorations de la sécurité Microsoft a publié depuis quelques semaines déjà la Consumer Preview de Windows 8 avec un nombre important de nouveaux composants. Parmi ceux-ci, figure la Platform Preview 5 d'Internet Explorer 10. Quoi de neuf pour la future version du navigateur dans cette mouture de l'OS ? C'est à cette question que répond Microsoft au travers du blog Windows 8, qui revient sur les améliorations et nouveautés d'IE 10 dans le système d'exploitation. La firme se concentre principalement sur la version Metro d'IE 10. Pour rappel IE 10 se décl...

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• After one has made many grid based puzzles how does one make then into a PDF ready for printing

  - by alan ross

  After one has generated many grid based puzzles like sudoku, kakuro or even plain crosswords and now one has to print them in a book. How does one make a pdf (book file) from them automatically. To explain the question better. One has the puzzle ready in computer format like ..35.6.89 for all nine rows. The dot being the empty cell. How does one convert then to a picture on a PDF page complete with box, automatically without doing them individually and then print a book from the pdf file. As can be seen there are other things also printed on the page all this is done automatically.

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• Restricted pathfinding Area

  - by SubZeron

  So i'm triying to create a little "XCOM : Enemy Unknown" like game ,and using the Aron Granberg's Pathfinding-Tool (free version) to handle the "click to move part. i want to add a little trap system where the hero get stuck inside an area, so he will have only the possibility to move inside this trapped area, so far everything is fine however when i click outside the trapped area, the hero try to reach the destination even though the wall will prevents him from reaching it. so my question is, is there any way to restrict the area where the pathfinding system work to the trapped area dynamically. and wich Graph Type is recommended to use in this situation or this kind of Games (Grid Graph/Navmesh Graph/Point Graph). Thank you. image link for explanation : https://dl.dropbox.com/u/77993668/exemple.jpg

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• How to properly shield a PO from outside?

  - by xsAce

  Update: We are a very small team (3 people) and thus I (SM) and the PO are also developers doing some coding. We are aware of this situation and we are actively trying to recruit some new talents. But it's hard! Meanwhile... we need to adapt... so my question: The PO complains about having too much outside noise (mainly stakeholders feature requests), and he can't focus on the sprint realisation. We agree that we should try to educate people on our process implications (sprint durations and product backlog), to reduce the noise. But as a ScrumMaster, how am I supposed to shield a PO from outside? Isn't he supposed to be in contact with the management and business? Also, if people outside don't want to waste too much time learning agile, what is the best way to educate them?

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• What effect does using itemprop="significantLinks" on anchors have for SEO and what is the ideal use?

  - by hdavis84

  I'm practicing application of microdata via http://schema.org. Anyone who's browsed the documentation there knows that there's a lot of need for improvement for more clear understandings on use for each property. My question on this post is more about the "significantLinks" property and how it effects SEO for on page, in content anchored text. Does anyone have any more information regarding whether its good to use for link optimization? I understand what schema.org means that it's to be used on "non-navigational links" and those links should be relevant to the current page's meaning. But will using this property hurt SEO or make SEO better for each page?

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• How do I get a Vodafone K3772-Z USB modem working?

  - by Ian

  I recently switched from Win 7 to Ubuntu 12.04...Best day of my life :) I have a question relating to my Vodafone K3772-Z USB modem. When I plug it in, the lights start flashing on the device, meaning that it is functional. In the network menu I get a "Wired network Vodafone K3772-Z disconnected". I have set up the a connection by using Edit connections - mobile broadband - Add, but in the add window the "Create a connection for this mobile device" is blanked out and says "Any Device". Does anyone perhaps have an idea of what I could do to get it working?

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• Is programming a SubCulture? [closed]

  - by Trufa

  I was going through this article: http://en.wikipedia.org/wiki/Subculture Which got mee thinking is programming a subculture? After the a while I started thinking it really hard, and if you go really in depth this is a very complex and interesting question to ask. YOu can even ask yourself if (heavy) internet (social) users are an subculture and programmers a culture within. I think it might be an interesting discussion, hope you like it! NOTE: I linked the wiki article because it might be a good baseline, maybe you can base you answer on Ken Gelder´s proposal to distinguish subcultures. But it should be based on a little bit more that intuition. Thanks in advance! Trufa

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• Laptop suspend appears broken, what must I roll back?

  - by M. Tibbits

  Question: What package contains the subprogram responsible for the KMenu option "sleep"? Background: I've been running KUbuntu 10.04.1 and I am completely updated. Recently (within the past month), the "sleep" menu item has stopped working. It just sits there waiting like I clicked nothing. I've check all of the logs in /var/log and nothing is added when I click sleep. I'm guessing that something I updated has bollux'ed things up, but I don't know which package contains the component that I need to roll back. In the meantime, I've installed uswsusp, but s2ram & s2both don't ask my password when the laptop resumes -- which really bothers me. So now that I've got a little time to track this down, I had to post -- any ideas??

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