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• Root username is different to admin username

  - by Chris Poole

  I have somehow changed my root username which seems to have caused my system to disallow me to mount USB, CDROM. My normal username is jenchris, however if I type: su root (and enter the password) then it shows root@jenchris-H55M-UD2H:/home/jenchris# (PLEASE NOTE THE HASH AT THE END OF THE USERNAME!) I think I accidentally hit the hash key at some point whilst typing my username.... This is causing huge problems as I have lost lots of permissions, please can someone help?

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• Is the Silverstripe CMS as easy to deploy, maintain, and develop on as it appears?

  - by Thomas Owens

  Although I haven't thought about deploying it on my own site, someone I know sent me a link to a CMS called SilverStripe that I've never heard of before. I read their site, looked at and played around with their demo, and so on. It looks like it's a CMS backed by a custom PHP framework that they call Sapphire. And from what I can gather on their website and using their demo, it potentially might be as good and easy as they say (once you get past any learning curve, which appears to be small, considering it looks a lot like other PHP frameworks and CMSes). Has anyone here ever deployed, maintained, or developed a CMS using SilverStripe? If so, could you shed some light on it, from a developer's point-of-view? I also found this earlier question about SilverStripe here on StackOverflow, but I'm more interested from a development point of view than a user or administrator point of view.

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• Fujitsu LifeBook T4010D Laptop CPU Fan from Pcpartsltd.com

  - by pcpartsltd

  est and 100% work perfectly Fujitsu LifeBook T4010D Laptop CPU Cooling Fan MCF-S4512AM05 Features: * MODEL:MCF-S4512AM05. * Package Content: 1x CPU Cooling Fan * Condition: New * Warranty: 3 Months Warranty Compatible Model: Fujitsu LifeBook T4010D Laptop Pcpartsltd.com limited is a direct Exporter of high quality pc part notebooks, laptop power adapters, laptop batteries, laptop keyboards, laptop Inverters, laptop Hinges, laptop CPU Fan, laptop driver, laptop MotherBoards, Samsung Wall Mount, laptop LCD Bezel/ LCD lid, laptop lcd/led panel and Laptop LCD Video Cable. We are Laptop Parts experts.

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• Image Drawing on UIView

  - by user1180261

  I'm trying to create an application where I can draw a lot of pictures at a specific point (determined for each image) on one view. I have a coordinates where I need draw a picture, width and height of it For example: I have 2 billion jpeg's images. for each images I have a specific origin point and size. In 1 second I need draw on view 20-50 images in specific point. I have already tryid solve that in the next way: UIGraphicsBeginImageContextWithOptions(self.previewScreen.bounds.size, YES, 0); [self.previewScreen.image drawAtPoint:CGPointMake(0, 0)]; [image drawAtPoint:CGPointMake(nRect.left, nRect.top)]; UIImage *imagew = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [self.previewScreen setImage:imagew]; but in this solution I have a very big latency with displaying images and big CPU usage WBR Maxim Tartachnik

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• Convert Double to String without precision loss in javascript

  - by holger

  I would like to convert a floating point variable to a string without losing any precision. I.e. I would like the string to have the same information as my floating point variable contains, since I use the output for further processing (even if it means that the string will be very long and readable). To put this more clearly, I would like to have functions for cyclic conversion var dA = 323423.23423423e4; var sA = toString(dA); var dnA = toDouble(sA); and I would like dnA and dA to be equal Thanks PS: Sources on the internet usually talk about how to round strings but I have not found information on exact representation. Also I am not interested in Arbitrary Precision calculations, I just need double precision floating point arithmetic.

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• How to make scripts run in Guake terminal instead of normal terminal

  - by Nirmik

  I have installed Guake terminal and I find it amazing. I have many scripts added as .desktop files in launcher. Now I want these scripts to run in the Guake terminal instead of opening in the normal Gnome terminal. How can I achieve this? Thanx :) Edit- The .desktop file is such- [Desktop Entry] Type=Application Terminal=true Icon=/path/to/icon/icon.svg Name=app-name Exec=/path/to/file/mount-unmount.sh Name=app-name

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• Run the system configuration once the system has been installed

  - by dierre

  Hi guys, the problem is the following. I have an old computer that mounts a SATA Dvd Burner. The old MoBo (an AsRock P4VT8+) is not able to recognize the freaking burner when booting. So I had to convert my IDE HD to USB HD and mount it on my laptop and install Ubuntu from there. The problem now is that I'm obviously getting kernel panic every now and then so I was wondering if it is possibile to rerun only the system and the hardware configuration.

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• "Shared Folders" Feature Is Not Working In VirtualBox

  - by Islam Hassan

  I have Ubuntu 11.10 as a host and another linux 2.6 distribution as a guest. When I try to setup guest additions, this error message appears Building the shared folder support module .. fail And because of that, when I run the following in terminal mount -t vboxsf shared /root/shared I get the following error message mount: unknown filesystem type 'vboxsf' Any syggestions please? EDIT Sorry, the mentioned error message isn't complete, this is it. Building the shared folder support module ...fail! (Look at /var/log/vboxadd-install.log to find out what went wrong) This is the content of vboxadd-install.log Uninstalling modules from DKMS Attempting to install using DKMS Creating symlink /var/lib/dkms/vboxguest/4.1.2/source -> /usr/src/vboxguest-4.1.2 DKMS: add Completed. Kernel preparation unnecessary for this kernel. Skipping... Building module: cleaning build area.... make KERNELRELEASE=3.2.6 -C /lib/modules/3.2.6/build M=/var/lib/dkms/vboxguest/4.1.2/build..........................(bad exit status: 2) Error! Bad return status for module build on kernel: 3.2.6 (i686) Consult the make.log in the build directory /var/lib/dkms/vboxguest/4.1.2/build/ for more information. 0 0 ERROR: binary package for vboxguest: 4.1.2 not found Failed to install using DKMS, attempting to install without make KBUILD_VERBOSE=1 -C /lib/modules/3.2.6/build SUBDIRS=/tmp/vbox.0 SRCROOT=/tmp/vbox.0 modules test -e include/generated/autoconf.h -a -e include/config/auto.conf || ( \ echo; \ echo " ERROR: Kernel configuration is invalid."; \ echo " include/generated/autoconf.h or include/config/auto.conf are missing.";\ echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ echo; \ /bin/false) mkdir -p /tmp/vbox.0/.tmp_versions ; rm -f /tmp/vbox.0/.tmp_versions/* WARNING: Symbol version dump /usr/src/linux-source-3.2.6/Module.symvers is missing; modules will have no dependencies and modversions. Actually the log file is very large and it exceeds the 30000 characters limit. How can I upload the entire log file here?

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• How to remove some of the TimeSeries titles in a AChartEngine Time Series View

  - by user1831310

  As a workaround of not being able to change colors of selected points in a series on an AChartEngine Time Chart, I was using an additional series for each point whose color has to be changed. I need to disable series titles for those additional series. Using empty string as the argument to the Time Series construtor: TimeSeries ts = TimeSeries(""); still results in the line-and-point symbol being placed with empty series title string under the X-axis labels for each such series. It would be a desirable feature for AChartEngine to remove both the line-and-point symbol and the series title string for a series created with a null argument to the TimeSeries construtor call: TimeSeries ts = TimeSeries(null); But this currently resulted in nullPointerException instead. Would the AChartEngine developers consider the above suggestion and until then, is there a way to remove some of the TimeSeries titles from a AChartEngine Time Series View? Best regards.

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• Swap is encrypted or not?

  - by Abhijit Navale

  I selected to encrypt home folder while install lubuntu 12.10 (64 bit) But after that 'sometimes' I get error that can not find /dev/mapper/cryptswap1 wait for mount or cancel at slpash screen. It then start the lubuntu without any problem. If i do sudo blkid | grep swap [sudo] password for abhijit: /dev/mapper/cryptswap1: UUID="fce3ef14-a9c6-45ac-81f5-18ff415851b0" TYPE="swap" That means swap is encrypted. But if i go to gparted it shows unknown partition with red exclamation mark for swap.

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• Likewise: joined Active Directory but cannot write shares.

  - by Aron Rotteveel

  I have never used a Linux system in an AD environment before and am trying to join my laptop running Ubuntu to join our Active Directory (DC is a Windows Server 2008 machine) using Likewise-open. Using the GUI wizard, I have joined the domain. I can mount network shares using CIFS Problem: I only have read access to our fileserver. What more is needed to get the AD to recognize me as a user who has the appropriate rights? Any help is appreciated.

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• How can you calculate the X/Y coordinate to zoom to

  - by Mark

  Im writing a WPF application that has a zoom and pan ability, but what I want to also implement is the ability to zoom and pan "automatically" (via a button click). I have the methods all defined to zoom and pan, but Im having trouble telling the app the desired X/Y coordinates for the panning. Basically, I know that I want the control to be centered at a desired zoom level (say zoomed in 6X times), but the panning destination point is NOT the center point of the control because after the zooming, its been scaled. Does anyone know a way of calculating the desired X/Y position to pan to, taking into account the zooming as well? Do I just scale the desired destination Point? It doesnt seem to work for me... Thanks a lot

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• How do chains work in Rainbow tables?

  - by James Moore

  Hello, I was wondering if should one could explain in detail how chains work in rainbow tables as though you would a complete novice but with relevance to programming. I understand that a chain is 16 bytes long. 8 bytes mark the starting point and 8 mark the end. I also understand that in the filename we have the chain length i.e. 2400. Which means that between our starting point and end point in just 16 bytes we have 2400 possible clear texts? What? How does that work? in those 16 bytes how do i get my 2400 hashes and clear texts or am i miss understanding this? Your help is greatly appreciated. Thanks P.s. I have read the related papers and googled this topic a fair bit. I think im just missing something important to make these gears turn.

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• System hang when using SSHFS

  - by Borivoje Petrovic

  This is just a quick note that I want to share with others. It is about the problem that I encountered with my office machine. It was hanging continuously when ssh mount was used. The main problem is, as I assumed, the termination of ssh session, which caused the sshfs not to respond. The solution for this issue is the ServerAliveInterval 60 directive in /etc/ssh/ssh_config file. Hope this someone help!

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• Guiding a Robot Through a Path

  - by Hamza Yerlikaya

  I have a field filled with obstacles, I know where they are located, and I know the robot's position. Using a path-finding algorithm, I calculate a path for the robot to follow. Now my problem is, I am guiding the robot from grid to grid but this creates a not-so-smooth motion. I start at A, turn the nose to point B, move straight until I reach point B, rinse and repeat until the final point is reached. So my question is: What kind of techniques are used for navigating in such an environment so that I get a smooth motion? The robot has two wheels and two motors. I change the direction of the motor by turning the motors in reverse. EDIT: I can vary the speed of the motors basically the robot is an arduino plus ardumoto, I can supply values between 0-255 to the motors on either direction.

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• How to move Ubuntu to an SSD

  - by Bart van Heukelom

  My current situation is: One hard disk Dual boot Ubuntu 11.04 and Windows 7. Partitions: 100MB Windows System thingy 144GB Main Windows 160GB Ubuntu 4GB Swap 12GB System Restore stuff Now I want to install an 80GB SSD and move Ubuntu to it. AFAIK I need to: Shrink the 160GB Ubuntu partition to 80GB Copy it over to the SSD Change fstab to mount the SSD as / How do I do the second? And what do I need to do about Grub?

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• Zotac MAG HD-ND01 Nettop review

  <b>Linux User and Developer:</b> "Like some of the alternative nettop computers we've reviewed over the past new months, the Zotac MAG can also attach to the VESA mount on the back of most monitors, meaning it takes up literally zero desk space."

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• 12.04.1 Error After Upgrade

  - by rambo15

  Just update my dell Inspiron to 12.04.1. Upon reboot I get the following error: The disk drive for / is not ready yet or not present. I press "S" to skip mount and then I get the folllowing error: the disk drive for /tmp is not ready yet or not present. I have already tried the following from the maintanance shell prompt: dpkg --configure -a No luck same error. Any help would be greatly appreciated.

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• Need help to install Ubuntu on Win7 Alienware M17xR3, installing not working

  - by Rodrigo

  Please I need help to install linux on my computer to start analyzing Next Generation Sequencing (molecular genetics) for my work. I've tried to install from all different ways and forms and it gave me different errors. First I will describe my system: Alienware M17x R3 Raid Drive 596GB (2x 298 GB) Windows7 primary partition C: The hardrive is divided in 3 primary partitions (can't do 4 don't know why) 1st: Fat16 no name capacity 40mbs almost not used (has files like command.com, dellbio.bin, dellrmk.bin and oobedone.flg) I dont know what this is for but is blocked and non system (Status:none). 2nd: Recovery NTFS 9GB (Status:system) and it seems to have boot files. 3rd: CD: Windos OS (status:boot). And I have 2 Logical drivers F: data for backup and games :D (300gb) G: For trying to install the Linux (Already tried with Fat32, Ext2, ext3 and ext4) Installing with Wubi on F: and G: Instalation looks good on windows ask to restart dos mode appears: try (HD0,0) non-ms:skip try (HD0,1) NTFS5: No Wibildr try (HD0,2) NTFS5: Error: "Prefix" is not set. Installing with Wubi on C: Installation looks good on windows ask to restart dos mode apears: Mount denied becouse NTFS volume is already exclusive opened, the volume may be already mounted or another software may use it which could be identified for example by the help of the 'FUSER' command Mount devdm-4 Could not find installation files /ubuntu/install custom-installation Run 'Chkdsk /r' on windows and restart...blablablalba... that should correct. done this didn't work. Tried installing with USB drive and after burning a CD with the Iso file download from the official website: I've tried the option to install along windows with a G: drive in FAT32, EXT2,3 and 4, I've tried to leave unallocated data, without the driver G at all... appears this everytime: http://i.stack.imgur.com/eo2Ie.png pres ok it ask me to: Not possible to install the boot loader at the location: specify new location: I've tried to select all the drivers non is accepted If I ask to continue without installing the boot loader he ask me to install later by myself which I'm trying to figure it out but I'm not really good to understand how ppl get to the programming part like a DOS to write down couse I'm a newb and I've dont work on dos or linux before... I've read that the boot loader has to be installed on the primary partition, but I'm not sure what I can delete from those 2 partitions that would let me get 1 extra... and it seems that the one that windows use is protected to write down so the software is not touching it... Please if someone have any idea to help me out... I've got a course tomorrow of how to use the software to analyze the data and I wanted to take my computer with me, so I've passed the last 3 days trying to search different ways to solve. My question is also post on the bugs.launchpad.net link here: lounchpad.net bug #882695

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• Does Hard Drive Orientation Affect Its Lifespan?

  - by Jason Fitzpatrick

  Many cases allow you to mount drives in vertical or horizontal configurations and external drives can be easily repositioned. Does the orientation of the hard drive affect the performance and longevity of the drive? Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• How to add labels on Google Maps Pinpoints?

  - by Jason

  Creating a google map with store locations within 50 miles of user entered address. Have map & pinpoints showing correctly but all of the pinpoints just have a dot on them. I'd like to be able to label them A, B, C, D, etc so that I can list out locations & addresses in sidebar. How would I do this? Here's the code I'm using to add my pinpoints. var point = new GLatLng(latitude, longitude); var marker = new GMarker(point); GEvent.addListener(marker, "click", function () { map.openInfoWindowHtml(point, myHtml); }); map.addOverlay(marker);

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• How to add a weather info to be evalueated only once???

  - by Savvas Sopiadis

  Hi everybody! In a ASP.MVC (1.0) project i managed to get weather info from a RSS feed and to show it up. The problem i have is performance: i have put a RenderAction() Method in the Site.Master file (which works perfectly) but i 'm worried about how it will behave if a user clicks on menu point 1, after some seconds on menu point 2, after some seconds on menu point 3, .... thus making the RSS feed requesting new info again and again and again! Can this somehow be avoided? (to somehow load this info only once?) Thanks in advance!

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• How to make gvfs-smb always use UTF8

  - by Didier

  The problem is that if I make an entry in /etc/fstab to mount a samba share I can give the option iocharset=utf8 and this then mounts the share correctly and in the right encoding with special characters displayed correctly. Gnomes automount system for some reason never gets this right and I can find nowhere to change its settings. Is there a way to make it always use UTF8 by default? This is with Ubuntu 10.10 and the system can display the characters involved.

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• what about laptop parts from Pcpartsltd.com?

  - by pcpartsltd

  i will buy some items form Pcpartsltd.com,what about it? i have seen some words:Pcpartsltd.com limited is a direct Exporter of high quality pc part notebooks, laptop power adapters, laptop batteries, laptop keyboards, laptop Inverters, laptop Hinges, laptop CPU Fan, laptop driver, laptop MotherBoards, Samsung Wall Mount, laptop LCD Bezel/ LCD lid, laptop lcd/led panel and Laptop LCD Video Cable. We are Laptop Parts experts.

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• Touching an object in a tweened animation?

  - by Michael

  I'm having trouble porting a simple game I developed for the iPhone over to Android. The game has an animated ball which moves from Point A to Point B. The user must touch the ball before it reaches point B or lose the game. This was easy to implement on the iPhone using Core Animation since I could locate the current position of the ball by accessing its animation layer. In Android, I attempted to recreate the game using tweened animation and represented the ball as a Drawable. My issue is that I can't determine if the user is touching the spot because the Drawable apparently bounds do not update as the ball visually moves - making the program think the ball is always in its original position. While searching these forums I saw an Android team dev. confirm that you can't get the current location in a tweened animation but offered no solution for a workaround. Can I accomplish this on the Android using my current approach? If not, what approach should I use? Best regards, Michael

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