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• Mount an image created from ddrescue

  - by oshirowanen

  I know this question has been asked before, but following those answers does not seem to work for me. I have created an image of a USB stick this is on my laptop harddrive. How do I mount this image? The command I used to create the image was: ddrescue --no-split /dev/sdb usb_recovered usb_recovery_log What am I supposed to do next? Mount it? Fix it then mount it? Mount it then fix it? And how? UPDATE: What I want to recover are the files in the image. How? I don't know as I have tried testdisk and it can't find partitions, and I have tried fdisk and it can't find a partition table in the image either.

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• Lucid hangs at booting after kernel upgrade

  - by Thomas Deutsch

  This weekend, one of our servers running Lucid has installed some upgrades: libgcrypt11 1.4.4-5ubuntu2.1 linux-firmware 1.34.14 linux-image-2.6.32-41-generic 2.6.32-41.91 linux-libc-dev 2.6.32-41.91 Afterwards, it rebooted since this was a kernel upgrade. Now, it hangs at booting, after /scripts/init-bottom. init-bottom itself should not be the problem, the last line I can see is "done". So the problem has to be shortly after that. http://manpages.ubuntu.com/manpages/hardy/man8/initramfs-tools.8.html tells me, that the next step is procfs and sysfs are moved to the real rootfs and execution is turned over to the init binary which should now be found in the mounted rootfs. But I don't know how and where. The problem exists with older kernels too, and this one here doesn't fix the problem: http://www.tummy.com/journals/entries/jafo_20111003_160440 Anyone an idea?

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• org.openide.awt.ColorComboBox

  - by Geertjan

  It's the time of year when a lot of NetBeans Platform tutorials are being reviewed, revised, and rewritten. Today I'm looking at the NetBeans Platform Paint Application Tutorial. Suddenly I remembered seeing something in a recent API Changes document about a new class, ColorComboBox. That means I can make the tutorial a lot simpler, since Tim Boudreau's external ColorChooser.jar is now superfluous. Here's what the ColorComboBox looks like: It works perfectly. Of course, the nice thing about using that JAR was that it showed the user how to incorporate external JARs, but I'll make sure to make a note of that in the tutorial, along the lines of "If you don't like the NetBeans Platform color combobox, and would like to replace it with your own, such as Tim's ColorChooser.jar or a JavaFX color chooser, take the following steps." In short, if you're using NetBeans APIs, write this on your ceiling above your bed: http://bits.netbeans.org/dev/javadoc/apichanges.html, check that page regularly (mark it in your calendar to do first thing every Monday morning) and you'll be aware of the latest changes as they happen.

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• Live boot from hard disk problem

  - by user172277

  I've installed Ubuntu Desktop 13.04 32bit. Next I configured /etc/grub.d/40_custom to boot live system from ubuntu.iso (also Desktop 13.04 32 bit) I used configuration: menuentry "Ubuntu 13.04 Desktop" { loopback loop /boot/ubuntu.iso linux (loop)/casper/vmlinuz.efi boot=casper iso-scan/filename=/boot/ubuntu.iso noeject noprompt splash -- initrd (loop)/casper/initrd.lz } and it works OK. Later I made some changes on my installed ubuntu. I made some configuration, installed additional packages and so on. After that I made backup using remastersys tool. Remastersys gave me new ISO file. So I wanted to use it. And here was first problem. Remastersys creates only initrd.gz file. So I changed the grub configuration form: initrd (loop)/casper/initrd.lz to: initrd (loop)/casper/initrd.gz But after that, when I reboot my system I get error: /init: line 3: can't open /dev/sr0: No medium found Any ideas how to fix it? Best Regards, Bartosz

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• Configure Jenkins and Tomcat using Puppet

  - by ex3v

  I'm trying to setup Spring dev environment (jenkins, tomcat) on Vagrant. What I really want to achieve is to limit config to only Puppet scripts, so I can share it with my colleagues and work together on the same environment. So far I managed to set up simple scripts to install jenkins, tomcat and so on, they work fine. What about jenkins configuration though? I'm pretty green in jenkins usage and configuration, not sure if I'm doing it the right way... I found this article and I want to migrate whole setup described in it to Puppet. Any ideas? Thanks.

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• 2 min video about the SQL_Compare

  - by CatherineRussell

  It is nice to start blogging again! I am working on new project in a small company now. We do not have a full time database admin. I have to cover multiple roles: getting requirements, writing docs and creating diagrams, designing app, writing code, testing and DBA role. I am not a DBA. But, I have to do day to day database changes: adding new new columns and tables. Check out 2 min video about the SQL_Compare. This tool saves time by automatically comparing and synchronizing database schemas; eliminate mistakes migrating database changes from dev, to test, to production; speed up the deployment of new database schema updates; generate T-SQL scripts to update one database to match the schema of another; find and fix errors caused by differences between databases;  keeps an accurate history of all previous database records.  http://www.red-gate.com/products/SQL_Compare/index.htm

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• Ubuntu 14.04 Bluetooth Magic Mouse doesn't pair (No agent available)

  - by Rafael Xavier

  Mouse gets discovered. Although, it doesn't pair. /var/log/syslog: Apr 23 10:05:15 xavier bluetoothd[9873]: No agent available for request type 0 Apr 23 10:05:15 xavier bluetoothd[9873]: btd_event_request_pin: Operation not permitted Apr 23 10:05:15 xavier bluetoothd[9873]: Connection refused (111) It's worth saying that: Keyboard has paired and it's working just fine though; Mouse used to work just fine in Ubuntu 12.04, and 13, and it works when I reboot on Mac; This is the hci device. $ hcitool dev Devices: hci0 E0:F8:47:3A:3F:47 How to get it working?

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• Tales of a corrupt SQL log

  Warning: Im a simple dev, not an all powerful DBA with godly powers. This morning, one of my sites was down and DNN reported a problem with the database.  A quick series of tests revealed that the culprit was a corrupted log file. Easy fix I said, I have daily backups so its just a mater of restoring a good copy of the database and log files.  Well, I found out thats not exactly true.  You see, for this database, I have daily file backups and these are not database backups created...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• bash script to login to webpage

  - by Nathan Cazell

  I am trying to login into this page but I cannot for the life of me get it to work. I have to login to this site when i connect to my school's wifi in order to start a session. So far ive tried to use bash and cUrl to achieve this but have only achieved to give myself a headache. will cUrl work or am I on the wrong track? Any help is greatly appreciated! Thanks, N Here's what i tried: curl --cookie-jar cjar --output /dev/null http://campus.fsu.edu/webapps/login/ curl --cookie cjar --cookie-jar cjar \ --data 'username=foo' \ --data 'password=bar' \ --data 'service=http://campus.fsu.edu/webapps/login/' \ --data 'loginurl=http://campus.fsu.edu/webapps/login/bb_bb60/logincas.jsp' \ --location \ --output ~/loginresult.html \ http://campus.fsu.edu/webapps/login/

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• What are the most commonly used enterprise Java technologies, and what would you want a non technical audience to understand about them?

  - by overstood

  I have been asked to give a presentation to a non-technical audience on what Java technologies are currently being used in the enterprise world. The goal is to give this non-technical audience the background they need to understand what engineers are talking about. It's part of a broader series of talks that I'm giving. I'm primarily a .NET and C++ dev, so I thought I'd try to get some input from some Java devs. What technologies do you use? What Java related acronyms would you like to be able to use around non-coders? What would you like non-coders to understand about them?

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• Change permission to mount disk at rdesktop

  - by Tal

  I have ubuntu 10.04 and have installed rdesktop 1.7. I have run these commands: sudo umount /media/Tal sudo mount -t ntfs-3g -o uid=1000,gid=1000,umask=0000 /dev/sdb1 /media/Tal rdesktop -0 -r sound:local -f -u administrator -r clipboard:PRIMARYCLIPBOARD -r disk:tal=/media/Tal myip Tal is external hard drive connecting at USB in ntfs file system. I connect to windows 7 I see the hard drive in computer and I can access to files and create new files and folders, But when I try to copy a new file to a folder he show me an error message: You need permission perform this action Your require permission from computer's administrator to make changes to this folder Tal on my computername Disk from Remote Desktop Connection. I try chmod and chown too but I read I linux forum when it ntfs is no use. Some one can help me with my problem?

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• Agile bug fixing - what's the preferred process for testing?

  - by Andrew Stephens

  When a bug is fixed, the dev set its status to "resolved" and the bug is reassigned back to the person that created it. In our case this is usually the product owner - we don't have dedicated testers. But what's a good process for controlling how/when the PO tests the software? Should he be given the latest build after each bug is resolved/checked-in? Or what about every morning? Or should he only receive a build at (or close to) the end of the iteration, to include all of that iteration's new functionality and bug fixes? We are using TFS by the way.

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• PPTP VPN connection with dd-wrt terminates

  - by StalkerNOVA

  I have problems with connection to DD-WRT router with PPTP server installed. Win7 has no problems with connection to it. But in Ubuntu I'm getting all the time: Dec 28 21:52:14 IT-nb pppd[4209]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded. Dec 28 21:52:14 IT-nb pppd[4209]: pppd 2.4.5 started by root, uid 0 Dec 28 21:52:14 IT-nb pppd[4209]: Using interface ppp0 Dec 28 21:52:14 IT-nb pppd[4209]: Connect: ppp0 <--> /dev/pts/2 Dec 28 21:52:18 IT-nb pppd[4209]: Connection terminated. Dec 28 21:52:18 IT-nb pppd[4209]: Exit.

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• Understanding the problem when things break in production

  - by bitcycle

  Scenario: You push to production The push broke multiple things That same build did not break qa or dev As a developer, you don't have prod access. There is lots of pressure from above to get things working agian. Specifics: PHP/MVC application that is API-driven in Zend. Deployed to a few servers. My question: While investigating, lets say I have a hunch that something is wrong. But, I don't know for sure. And, of course, I can't test things in production. If I have a suggested fix based on that hunch, would it be wise to try and apply it and see if it works, before understanding what the problem is?

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• How to decide how much to charge for development?

  - by rik

  So two other friends and I are a very small game dev studio. So far we haven't released a game but we have 2 games almost ready to launch. A bigger studio saw our work and now they want to work with us; they need people to develop mobile games for them (iOS, Android). They want us to set the price for the projects (can't tell the specifics we signed a NDA). They will give us all the assets (graphics/sound) so we only have to code. And because they only work with Unity3D we have to learn it. How do we decide how much to charge for the projects?

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• Ubuntu 12.04 booting into busybox after update

  - by Victor Alejandro Martinez

  Every time the system updates the kernel from 3.5.0-24 to 3.5.0-34 I get dropped into a busybox prompt at boot, but I can boot just fine using the previous kernel. I've tried all I know. I did a fsck.ext3 -f /dev/sdb2 using the alternate install CD. I've used boot-repair but to avail, I've checked for bad blocks but there are none. Should I purge the new kernel and use the old one instead? This is the output from boot-repair the first time, no purge. http://paste.ubuntu.com/5809230/

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• Best Game Engine/Framework and Language for 2D actor/sprite intensive game

  - by Grungetastic

  I'm new to the game dev world. I have a rather large project in mind (I learn by setting myself challenges :P ) and I'm wondering what the best engine/framework/language is for a 2D game with thousands of sprites/actors on screen at a time. Bare metal type stuff. I need to still be able to zoom in and out with that many actors at once. This game will have no 3D elements. Any thoughts? Suggestions?

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• Best Way To Develop Robust Cross-Platform Application?

  - by Clay

  Windows C programmer here (going back to 1992 and Windows95 back when it was called Windows93). Can function in C++, but mostly still a C programmer. Looking to build a cross-platform casual game. Very numbers heavy with only a few artistic embellishments and animations, so perhaps a development environment for business apps might be the best option. Or an easy-to-use 2D game dev platform. Target platforms: Windows, Mac, MS Tablet, iPhone, iPad, Android. I currently develop on Windows with Visual Studio 2012, but we could spend up to $50K on hardware/software/middleware if necessary. Not very competent getting open-source software working. Would rather pay the money and jump right into app development. Recommendations?

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• Easy way of engaging non-programmers (i.e. designers) into using version control?

  - by Kevin

  What are some key ways of getting your team involved in using version control during development, web development or otherwise? I refuse to work without it, which means anyone involved in the project must also use it. It's just good practice. GUIs like Tower have helped, but the concept of it is either met with anger ('not my job!' kinda attitude), timidness, or just straight up not using it (using FTP instead, circumventing version control for say, dev or deployment). Edit: I should have clarified a little that I don't just mean images/PSDs.

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• creating the nodes for path finding during run time - more like path making and more

  - by bigbadbabybear

  i'm making my 1st game. i'm using javascript as i currently want to learn to make games without needing to learn another language but this is more of a general game dev question its a 2d turn-based tile/grid game. you can check it here http://www.patinterotest.tk/ it creates a movable area when you hover a player and it implements the A* algo for moving the player. The Problem: i want to make the 'dynamic movable area creation' already implement a limited number of steps for a player. The Questions: what is a good way to do this? is there another algorithm to use for this? the A* algorithm needs a start and destination, with what i want to do i don't have a destination or should i just limit the iteration of the A* algo to the steps variable? hopefully you understand the problem & questions easily

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• WordPress bot issues

  - by Paul

  I need to implement a blog into a clients site as he is unhappy with his current basic CMS driven solution. It needs to suit both seo and the current style and as I'm a front end dev/designer and they don't have budget to redevelop - the only solution I can think of is to setup a Wordpress blog and restyle to suit. My only worry about this is the current press reports on WordPress being affected by webbots. I understand the main worry Is if you use an id of admin, but I'm concerned that regardless of this the site could be bombarded with bot requests and cause timeouts! Is this valid? If so is there any way to avoid this issue!? If not can anyone recommend another good SEO friendly blog solution!?

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• How to restart upgrade (from 11.04 to 12.04)

  - by Konoppo

  Yesterday I was making upgrade (from 11.04 to 12.04) when I have got power failure. I don't known where the installer was, because I wasn't in the front of computer at that moment. After restart Ubuntu started to version 12.04 and everything looks OK. But - I'm not sure if everything was installed correctly? How can I check it or how can I "restart" my automatic upgrade tool to do everything again and "to the end"? Some more infomations: lsb_release -a: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04 LTS Release: 12.04 Codename: precise uname -r: 3.2.0-24-generic apt-get found five updates: linux-headers-3.2.0-24 linux-headers-3.2.0-24-generic linux-image-3.2.0-24-generic linux-libc-dev ubuntu-docs unity-scope-musicstores

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• Changing file permissions on USB external hard drive

  - by pacomet

  I am using an external USB hard drive for a long time in Ubuntu 10.04, both at work and at home. Now I've installed 12.04 at home. Today I used the USB drive for the first time. I can read the disk but can't change the permissions of a file I wanted. Output of "mount" /dev/sdb1 on /media/FREECOM HDD type vfat (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077, utf8=1,showexec,flush,uhelper=udisks) What I try sudo chmod u+w bsst-hdf_to_bsst-h5 and what I get -rw-r--r-- 1 paco paco 2956 dic 19 10:27 bsst-hdf_to_bsst-h5 Any idea would be appreciated. Thanks in advance

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• problems after update with libdrm

  - by Grzesiek Szczurek

  I've got problem with updating. Sorry for polish language in log, but it is default language in my system. I'm using ubuntu 12.04 gnome remix. Anybody know how to fix it? Nalezy uruchomic "apt-get -f install", aby naprawic ponizsze problemy: Nastepujace pakiety maja niespelnione zaleznosci: libdrm-dev : Wymaga: (= 2.4.40+git20121123.171666e4-0ubuntu0ricotz2~precise) ale 2.4.32-1ubuntu1 ma zostac zainstalowany libdrm-intel1 : Wymaga: libdrm2 (= 2.4.38) ale 2.4.32-1ubuntu1 ma zostac zainstalowany libdrm-nouveau2 : Wymaga: libdrm2 (= 2.4.38) ale 2.4.32-1ubuntu1 ma zostac zainstalowany libdrm-radeon1 : Wymaga: libdrm2 (= 2.4.38) ale 2.4.32-1ubuntu1 ma zostac zainstalowany libdrm2 : Narusza zaleznosci: libdrm2:i386 (!= 2.4.32-1ubuntu1) ale 2.4.40+git20121123.171666e4-0ubuntu0ricotz2~precise ma zostac zainstalowany libdrm2:i386 : Narusza zaleznosci: libdrm2 (!= 2.4.40+git20121123.171666e4-0ubuntu0ricotz2~precise) ale 2.4.32-1ubuntu1 ma zostac zainstalowany

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• Google I/O 2012 - Chrome Developer Tools Evolution

  Google I/O 2012 - Chrome Developer Tools Evolution Sam Dutton, Pavel Feldman Web app development moves fast and Chrome Developer Tools is still keeping you one step ahead. If you know your way around the Dev Tools and would like to take your skills to a higher level, this session will kick your productivity into overdrive. Since last year's installment, we've added a whole slew of features that empower developers to make rich web apps, so in this demo-rich session we'll explain how to use those tools to develop and debug on mobile and desktop. We'll take you jank hunting with the new timeline, delve into minified JavaScript via Source Maps, debug Web Workers, and much more. Join us and learn what Chrome Developer Tools can do for you. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1722 36 ratings Time: 59:41 More in Science & Technology

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