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• Installed Ruby 1.9.2 but new gems won't create scripts into /usr/bin

  - by karatedog

  I had previously ruby 1.8 on my Ubuntu 10.10, which I removed through Synaptics. Then I have installed ruby 1.9.1 also via Synaptics (which is then saying that itself is version 1.9.2). Then I installed ruby-debug19 and rspec gems with sudo gem install ruby-debug19 rspec However I can't start rdebug or rspec, but I can invoke the debugger from inside my ruby script, so the debugger is working. I inspected the starting scipts rdebug and rspec and then I realized that they are still old scripts back from ruby1.8 time. In other worlds, the current 1.9 install of these gems haven't created the starting scripts anywhere. What is the easiest solution for a lazy soul like me? It looks like removing-reinstalling ruby 1.9.2 won't help, and installing these gems over and over againg won't create the starting scripts.

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• mp3 file streaming/download - apache server memory issue

  - by Manolis

  I have a website, in which users can upload mp3 files (uploadify), stream them using an html5 player (jplayer) and download them using a php script (www.zubrag.com/scripts/). When a user uploads a song, the path to the audio file is saved in the database and i'm using that data in order to play and show a download link for the song. The problem that i'm experiencing is that, according to my host, this method is using a lot of memory on the server, which is dedicated. Link to script: http://pastebin.com/Vus8SRa7 How should I handle the script properly? And what would be the best way to track down the problem? Any ideas on cleaning up the code? Any help much appreciated.

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• Intel HD graphic drivers for ubuntu 10.10 64bit: the brightness says its being adjusted but it isn't

  - by James

  Hey all, I picked up an hp dm3t laptop with intel HD graphics and installed ubuntu 10.10 64 bit on it. It works great -- the only problem is that the brightness controls on the keyboard don't work. The brightness is always at full. When I try to adjust it down, the indicator graphic indicates that it's going down but the actual brightness doesn't change. Is there anything that I can try to make this work? I'd really appreciate any help. I asked this on superuser.com and someone commented that I should play around with the intel hd drivers. I'm a total noob -- how do I do that? What else can I try? I reallly don't want to do back to windows.

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• Unable to install flash plugin in Ubuntu 12.04

  - by Farhat

  Yesterday I upgraded from Ubuntu 11.10 to Ubuntu 12.04 (64 bit). The upgrade went smoothly (far more than I expected). Unfortunately, I cannot seem to install the flash plugin in either Firefox or Chrome. chrome://plugins does not show flash. I tried 19:17farhat ~$ sudo apt-get install flashplugin-installer Reading package lists... Done Building dependency tree Reading state information... Done flashplugin-installer is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Yet, I cannot seem to find anything related to flash on the system. 19:17farhat ~$ sudo updatedb [sudo] password for farhat: 19:17farhat ~$ locate libflashplayer.so 19:17farhat ~$ locate libflashplayer 19:17farhat ~$ locate libflash /usr/lib/libreoffice/program/libflashlo.so 19:17farhat ~$ I am at the end of everything I know. Any help will be appreciated. I have tried removing and reinstalling the package. Still the same results.

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• Linux installation on Acer Aspire One D270

  - by ronnie

  I was planning to buy Acer Aspire One D270 within a few days and as everybody installs linux on their netbook I was also planning to do that. Now, my question is how is Acer's hardware compatibility with linux and specifically in respect to the new Acer Aspire One D270. Has anybody tried installing linux on these new netbooks. It will be a great help if a D270 user can share his/her experience with linux usage. I read on some forums that there is some linux driver issue with Intel GMA 3600 and that people are not able to adjust their brightness. So, as I am a linux noob is this a major issue or not. Specs: RAM : 2Gb DDR3 Processor: Intel N2600(Cedar Trail) Graphics: Intel GMA 3600 HardDisk: 320Gb 5400 rpm

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• Build a custom Ubuntu based distribution

  - by user51447

  I am working on making a custom Ubuntu 11.10 based distro.(64 bit) I am adding non open source packages, replacing packages, changed user interface from Unity to GNOME, and more changes. My system is ready, and I want to create a redistributable image for my distro. When you go to system settings - system info, you see a logo with the Ubuntu name and logo, but I want to change it to the name and logo of my distro. Also, in the boot menu, I want to change the boot entry names, and the GRUB background. And I want to change the name Ubuntu from every possible location. Also, I will be sharing it with people, so I want to make my own software repositories, like linux mint has, or any other distro has, I will purchase server space for that. Also, the I want to customize the wubi installer like linux mint did and if some uses the customized tool to install my distro from Windows, they should see the name of my distro in add or remove programs page. Any help will be appreciated!

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• How do I make music sync with iOS 5 in Ubuntu 11.10 work?

  - by Alex Cristian

  I've tried several tutorials on the internet but nothing works. This is not a duplicate, it is true that there are several of them about ios5 but not one of them asks specifically about music syncing or ubuntu oneiric ocelot... I'm just so angry at Apple because of this, my iPod classic syncs just fine with Banshee but my iPad 2 won't, because they suddenly decided to change how uploading music to their app works in ios5. I looked around and saw that an unstable libimobiledevice-1.1.2. was available, but I can't manage to install it! It's a nightmare, any help would be greatly appreciated.

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• How do you find libraries(C++) in Ubuntu?

  - by Bora George

  Sorry this is such a beginner question, but I've recently begun programming with C++ on Ubuntu 12.10 and I've installed a few libraries I need to work with, for example PCL and I can't find them to add them to my project, I'm using QTcreator as the IDE and qmake which comes with it. For example with PCL I followed the instructions on their site: sudo add-apt-repository ppa:v-launchpad-jochen-sprickerhof-de/pcl sudo apt-get update sudo apt-get install libpcl-all And as no problems occurred I have to assume they are correctly installed. Most of the tutorial dealing with adding external libraries I've found on the web assume you're on windows and know where you downloaded the library. Since I don't have experience with adding external libraries in C++, could someone please tell me in what file, if there is one, are libraries installed by default in Ubuntu? What is the extension of these library files? Is there a script/command which can help detect a library or all the libraries installed?

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• Useful code paste site tools

  - by acidzombie24

  I know there are site tools to check if your webpage is alive, has compression, etc but lets not get into that. What are useful sites to paste code in and to share links of? The three i know are http://codepad.org/ shows source and runs code online http://www.pastie.org/ share source with syntax highlighting http://jsfiddle.net/ great for JS help or for the occasional test. What else do you know of? One answer per question. I'll let lints and validators slide since you do paste code into them. Mention a weakness if you do know one so others wont be surprised or disappointed.

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• HTTPS Everywhere Extension Updates to Version 3.0, Adds Protection for 1,500 More Websites

  - by Asian Angel

  If one of your security goals is to encrypt your communication with websites as much as possible, then you will definitely be pleased with the latest update to the HTTPS Everywhere extension for Firefox and Chrome. This latest release adds encryption protection for an additional 1,500 websites to help make your browsing experience more secure than ever. Images shown above courtesy of EFF. You can learn more about this latest release along with installing the extension for Firefox and/or Chrome directly from the blog post linked below… HTTPS Everywhere 3.0 protects 1,500 more sites [via Softpedia] HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference How To Troubleshoot Internet Connection Problems

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• Bootable USB drive won't run installation

  - by Edgar

  I am having issues installing 12.10 on a laptop from bootable USB Drive 4GB FAT32. Also I changed order on BIOS to boot from USB. But only I see is the black screen with SYSLINUX 4.06 EDD 4.06-pre7 Copyright (C) 1994-2012 H. Peter Anvin et al _ I tried to install 12.10 into my older laptop using the same bootable USB drive just to be sure, and it's all works fine! I have also trying different USB drives, but results were the same. So it looks like there is nothing wrong with my bootable USB drives. Something is wrong with my laptop, but I can't figure out what exactly, because it's very new and Windows7 boots and runs just great. I Googled but found nothing useful. My laptop is really a small one: Acer AOD270 Protcessor: Intel(R) Atom(TM) CPU N26OO 1.60 GHz RAM: 1 GB Windows 7 Starter 32 bit It has no CD drive Any help would be really appreciated please.

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• Setup DKIM (DomainKeys) for Ubuntu, Postfix and Mailman

  - by MountainX

  I'm running Ubuntu 12.04 with Postfix and Mailman. I want to set up DKIM. (DomainKeys Identified Mail, or DKIM is the successor to Yahoo's "DomainKeys". It incorporate's Cisco's Identified Mail). What are the steps for setting this up? Is opendkim recommended? The only reference I have is HowToForge, but I prefer to get help here (even if it is just a confirmation of the steps at that link). Actually, I think the info at HowToForge is outdated because it mentions dkim-filter instead of opendkim.

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• Books for MCSD and advice

  - by Mahesha999

  Hi there I am thinking to get certification done for MCSD. http://www.microsoft.com/learning/en/us/certification/cert-mcsd-web-applications.aspx I did found the books for first exam 480 comprising CSS3, HTML5 and JavaScript. However I did not found books for other exams: 486: ASP.NET MVC 4.5 Apps - Will ASP.NET 4 books suffice for this? Should I also learn Web Forms though I have considerable part of it. 487: Windows Azure and Web Services - What book should I use? I seems that the syllabus is too huge and will take considerable time. Anyone suggesting any advice to complete such exams, since this is going to be my first such. How should I prepare? Should I give this exam? Will it help? Sorry I know I asked many questions here in one questions - a bad practice but the books-question is a big concern for me.

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• Moving screenshots from 1 folder to another instantly

  - by Frank

  I am hosting a gaming site and once in a while the server automatically creates a screenshot in the servers folder. Unfortunatly it is NOT configurable in the server settings where it puts these screenshots, it just allways dumps the PNG file in the server config folder. My folder structure is for example as follows: /home/Game/Server1/ now, what I would like to achieve is that once the server creates a screenshot in 1 of these server folders (I have multiple), the operating system moves the screenshot IMMEDIATLY (which is ALLWAYS a *.png file) to the webserver folder, for example: /var/www/Server1/filename.png So that players can see the screenshot on the website. Anyone any idea on how I can tackle this problem the smartest way? Please note that my ideal situation would be if the PNG file is moved immediatly after creation. Thanks for your help. Frank

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• Error while upgrading

  - by arun

  When i have select to install updates from the update manager it says: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-image-3.0.0-13-generic_3.0.0-13.22_i386.deb Size mismatch I have tried several times and through terminal too but the size mismatch repeats itself there too. What is this size mismatch error ? Please Help ? tried sudo apt-get update and the sudo apt-get upgrade but the again error comes:: Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-video-intel/xserver-xorg-video-intel_2.15.901-1ubuntu2.1_i386.deb Size mismatch E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

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• How to commit a file conversion?

  - by l0b0

  Say you've committed a file of type foo in your favorite vcs: $ vcs add data.foo $ vcs commit -m "My data" After publishing you realize there's a better data format bar. To convert you can use one of these solutions: $ vcs mv data.foo data.bar $ vcs commit -m "Preparing to use format bar" $ foo2bar --output data.bar data.bar $ vcs commit -m "Actual foo to bar conversion" or $ foo2bar --output data.foo data.foo $ vcs commit -m "Converted data to format bar" $ vcs mv data.foo data.bar $ vcs commit -m "Renamed to fit data type" or $ foo2bar --output data.bar data.foo $ vcs rm data.foo $ vcs add data.bar $ vcs commit -m "Converted data to format bar" In the first two cases the conversion is not an atomic operation and the file extension is "lying" in the first commit. In the last case the conversion will not be detected as a move operation, so as far as I can tell it'll be difficult to trace the file history across the commit. Although I'd instinctively prefer the last solution, I can't help thinking that tracing history should be given very high priority in version control. What is the best thing to do here?

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• How do I get an Epson al-c 1700 printer working?

  - by Edmond Frants

  I have a brand new epson aculaser c1700 and i'd like to have it working fine on ubuntu 12.04. so i did my homework, kind of, no printer driver comes for this printer in cups ... so i asked epson support who drove me to avasys who no longer handle support since december 2011. This the question that is still in my mind : as this printer comes with an osx driver which uses cups as printer server, how come no driver can be found for cups? I tried to get ppd and filters from osx driver and use them to install the printer on ubuntu but no answer from printer and none printed sheet i have .... i'm so disappointed i could cry ... I'd like to work with someone to get this working fine, please help me!

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• Laptop battery fails to change unless power level very low, and then dicharges quickly

  - by dana

  I've had my laptop for about 5-6 weeks. Its a DELL Alienware M15x and I have never replaced the battery,such as http://www.pcbatteria.com/dell-alienware-m15x-series.html. The past 3 weeks or so the battery can only charge when the computer is off or in a low power state. If its on and plugged in it will still lose its charge unless its already at 100%. On a full charge without being plugged in it only holds its charge for about 1 hour on "power saver". This makes it extremely hard to use it as a portable device so i'm trying to find a way to troubleshoot the problem without having to buy a new battery or laptop. Unfortunately I need it for the next few months in some of my classes so its kind of urgent. Thanks for your help!

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• Oracle ADF Mobile - Develop iOS and Android Mobile Applications with Oracle ADF

  - by Shay Shmeltzer

  We are very happy to announce the release of Oracle ADF Mobile.  The new Oracle ADF Mobile enables developers to build applications that run on iOS and Android devices. Several unique aspects to Oracle ADF Mobile solution: Develop once run on many - same code base used for both iOS and Android applicaitons Uses Java - no need to learn device specific languages Leverage ADF - same concepts you are familiar with (component based UI construction, taskflow, data controls) Leverage JDeveloper - same development environment you know, same declarative and visual style. Create native looking applications - HTML 5 based UI components (that you can also skin) Use device services - Leverage the camera, SMS, location, contact etc without learning device specific APIs Create Hybrid applications - run on the device and able to consume remote data and UI if needed Here is the 3 minute introduction Oracle ADF Mobile is available as an extension to Oracle JDeveloper 11.1.2.3 - use the help->check for updates to install it. Then head over to the Oracle ADF Mobile page for all the resources you need. If you are an Oracle ADF developer, it's time to update your resume - you are now a mobile device developer too :-)

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• Replace %26 in htaccess to %2526

  - by Patrick

  I would like htaccess to rewrite example.com/something_%26_else into example.com/something_%2526_else. I'm importing a bunch of pages that have ampersands in the title from Mediawiki. These are encoded as %26. Drupal, for various reasons, has decided double encode the url it to have it become %2526. I simply can't create the alisis within Drupal so I have to use htaccess This is what I have as my rule so far as RewriteRule ^w/([^%26]+)\%26(.*)$ w/$1\%2526$2 [R=301] I asked this question three months ago on stackexchange and was not able to get it working. I tried hiring a contractor for this but was unable to find one. So this my last ditch effort before I completely give up. I really appreciate the help. All the best, Patrick

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• I feel stuck in the center of Python, How to get past beginner

  - by Isov5

  I really apologize if this doesn't follow the S.O rules but I need a little help, I personally still classify myself as a beginner in python, Yet I've wrote a very small and VERY SURE impractical program for my boss to use. I know I'm still a beginner because simple things still perplex me but every book I read for beginners honestly just rehashes what I do already know but every 'more advanced' book doesn't really allow me to learn, they depend on example files and I never really understand why they built 'said' function or 'said' class. So onto my question... Is there any recommendations on a book or ANYTHING that pushes me out of this stage, I've used head first and normally they are really good but my issue there is they have me back tracking just to move forward again, It worked in HTML but its confusing in Python, basically I think I need to build a program while following along, Again I like HeadFirst's style but I need something that isn't going to make me have to remember one thing just to forget it... for record, I've checked into some O'Reilly books

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• Finding the contact point with SAT

  - by Kai

  The Separating Axis Theorem (SAT) makes it simple to determine the Minimum Translation Vector, i.e., the shortest vector that can separate two colliding objects. However, what I need is the vector that separates the objects along the vector that the penetrating object is moving (i.e. the contact point). I drew a picture to help clarify. There is one box, moving from the before to the after position. In its after position, it intersects the grey polygon. SAT can easily return the MTV, which is the red vector. I am looking to calculate the blue vector. My current solution performs a binary search between the before and after positions until the length of the blue vector is known to a certain threshold. It works but it's a very expensive calculation since the collision between shapes needs to be recalculated every loop. Is there a simpler and/or more efficient way to find the contact point vector?

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• Layouts in HTML

  - by TerNovi

  I am trying to have a div then inside the division have some different places where I can place stuff. For example. <div blah> <table blah> content... </table> <table blah> content... </table> <table blah> content.... </table> </div> I am not really a web developer so I know this question might seem simple but any help is greatly appreciated. Oh and I am using Macromedia Dreamweaver 8. Thanks.

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• DNS slowdowns on development environment

  - by Sequenzia

  I have a local development environment setup on my Mac. I am running an Ubuntu Web Server inside of a Virtual Box VM. I setup a host file on my Mac that points my dev site to the IP of the Ubuntu Virtual Server. Everything works good other than the fact a lot (not all) of the time it takes more than 5 seconds to load a page. I used firebug to track down where the problem is and when it's slow the DNS part of my request is taking over 5 seconds. Like I said it's not all the time. Sometimes it resolves and loads the page within milliseconds. The same page one click will be super fast and then the next time it takes over 5 seconds. It's really slowing me down and I am not sure what is causing it. Anyone have any ideas? Any help would be great. Thank

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• samsung netbook n102sp problems with ubuntu 12.04 does not recognize intel 3150 hd high resolution

  - by foxtier494

  hello friends I have a samsung netbook n102sp atom processor 1.6, 2GB ddr3 ram and a intel 3150hd chiset chart, well the problem is the following the regular work pc has audio, lan, wi-fi reconose the video but I only lansa the resolution of 800 x 600 and I can not upload that's in the details of the computer I get into graphics (VESA: Intel ® Graphics XX) and I can not see videos because they only hear the audio and I use the vlc player I investigate intel 3150hd drivers and try to install layered but I was not please someone help me because it's an ugly work 800 x 600 and I can not see videos please, if anyone knows how to install the driver from Intel that are on the web please guide me when applied dpkg-s xserver-xorg-video-intel tells me that this driver installed ( XvMC "XVideo Motion Compensation" drivers for i810/i815 and i9xx and newer chipsets.)

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