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  • What do you think about gems and eggs? Alternatives?

    - by Juanlu001
    I've read recently some criticism (see 1, 2, 3) about the packaging distribution system of two popular programming languages: Ruby gems and Python eggs. The most important argument stated against them is that they replace the system package manager (in case there is one, as in every Linux distribution), which makes eggs and gems difficult to track, code difficult to patch, and so on. Are actually eggs and gems right? In case not, are there any alternatives to distributing Python or Ruby modules? Should developers focus on taking advantage of package manager (apt-get, pacman, ...) capabilities?

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  • How can i install XFCE along side unity?

    - by James
    I would like to be able to install XFCE to run alongside unity so I can choose on startup which DE I use, without breaking any features of either DE. Following this: https://sites.google.com/site/easylinuxtipsproject/xubuntu "Note: don't install Nautilus in Xubuntu! This will cause system conflicts." I don't want to affect ANY of the features in unity, i.e. I want to be able to use the two interchangeably, so I can't follow some suggestions of just cleaning out all the old stuff as that would mean using unity would be changed, (http://askubuntu.com/questions/111400/can-i-install-unity-aside-with-xfce-and-switch-them-as-i-want) is this possible in 12.04? [System] ubuntu 12.04.1 64bit.

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  • Why doesn't 12.04 recognize my ATI Radeon X300SE graphics card?

    - by Nomad Zero
    So far everything including the BCM4321 card is working, however, the OEM ATI Radeon X300SE (RV370) is not recognized. When I go into system details the card comes up as unknown. When I run lspci the card shows up as: 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV370 5B60 [Radeon X300 (PCIE)] 01:00.1 Display controller: Advanced Micro Devices [AMD] nee ATI RV370 [Radeon X300SE] I have attempted check Additional Drivers but the card does not show up as needing a driver. So far this is causing the system to run warmer as the processor is doing a bit of the work to run Unity and any full screen videos tend to be rather choppy. Is there an available driver that will fix my issue and what is the install method? I am not scared to run a terminal so no worries there, as long as I have instructions, I can find my way. I am running under 12.04 LTS Kernel 3.2.0-25-generic-pae

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  • I can't find my "WIndows 8" Partition

    - by abhi_nash
    My girlfriend had her Dell Pre-Installed with Windows Vista when she bought it,then she upgraded it to Windows 7 and then 8.Since she wanted an Operating System which is fast and powerful i suggested Ubuntu for her.She runs a Dell Inspiron 1420 with 2 gigs of ram and an Nvdia 8400M GS,though the laptop is a bit old,it does her things like a dream. So,I have used a Flash Drive(8 Gigs) to install Ubuntu 13.04 on her system and used "Overwrite the Windows 8 OS".Then afterwards when I logged in I can't find any of her files which was on her WIndows 8 installation. Anyone know a work around with this?!

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  • Failed to start up after upgrading software in ubuntu 10.10

    - by Landy
    I asked this question in SuperUser one hour ago, then I know this community so I moved the question here... I've been running Ubuntu 10.10 in a physical x86-64 machine. Today Update Manager reminded me that there are some updates to install and I confirmed the action. I should had read the update list but I didn't. I can only remember there is an update about cups. After the upgrading, Update Manager requires a restart and I confirmed too. But after the restart, the computer can't start up. There are errors in the console. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. [xxx]usb 1-8: new high speed USB device using ehci_hcd and address 3 [xxx]usb 2-1: new full speed USB device using ohci_hcd and address 2 [xxx]hub 2-1:1.0: USB hub found [xxx]hub 2-1:1.0: 4 ports detected [xxx]usb 2-1.1: new low speed USB device using ohci_hcd and address 3 Gave up waiting for root device. Common probles: - Boot args (cat /proc/cmdline) - Check rootdelay=(did the system wait long enough) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory ALERT! /dev/sda1 does not exist. Dropping to a shell! BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell(ash) Enter 'help' for a list of built-in commands. (initramfs)[cursor is here] At the moment, I can't input anything in the console. The keyboard doesn't work at all. What's wrong? How can I check boot args or "root=" as suggested? How can I fix this issue? Thanks. =============== PS1: the /dev/sda1 is type ext4 (rw,nosuid,nodev) PS2: the /dev/sda1 can be mounted and accessed successfully under SUSE 11 SP1 x64. PS3: From this link, I think the keyboard doesn't work because the USB driver is not loaded at that time.

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  • SuperSocket

    - by csharp-source.net
    SuperSocket is a light weight extensible socket application framework. You can use it to build a command based server side socket application (like FTP server, SMTP/POP3/IMAP4 server, SIP server, etc) easily without thinking about how to use socket, how to maintain the socket connections and how socket works(synchronize/asynchronize). It is a pure C# project which is designed to be extended, so it is easy to be integrated to your existing system. As long as your systems (like forum/CRM/MIS/HRM/ERP) are developed in .NET language, you must be able to use SuperSocket to build your socket application as a part of your current system perfectly.

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  • Bring 2 GB Large Pages to Solaris 10

    - by Giri Mandalika
    Few facts: 8 KB is the default page size on Oracle Solaris 10 and 11 as of this writing Both hardware and software must have support for 2 GB large pages SPARC T4 processors are capable of supporting 2 GB pages Oracle Solaris 11 kernel has in-built support for 2 GB pages Oracle Solaris 10 has no default support for 2 GB pages Memory intensive 64-bit applications may benefit the most from using 2 GB pages Prerequisites: OS: Oracle Solaris 10 8/11 (Update 10) or later Hardware: Oracle servers with SPARC T4 processors e.g., SPARC T4-1, T4-2 or T4-4, SPARC SuperCluster T4-4 Steps to enable 2 GB large pages on Oracle Solaris 10: Install the latest kernel patch or ensure that 147440-04 or later was installed Check the patch download instructions Add the following line to /etc/system and reboot set max_uheap_lpsize=0x80000000 Finally check the output of the following command when the system is back online pagesize -a eg., % pagesize -a 8192 <-- 8K 65536 <-- 64K 4194304 <-- 4M 268435456 <-- 256M 2147483648 <-- 2G % uname -a SunOS jar-jar 5.10 Generic_147440-21 sun4v sparc sun4v Also See: Solaris 9 or later: More performance with Large Pages (MPSS) Large page support for instructions (text) in Solaris 10 1/06 Solaris: How To Disable Out Of The Box (OOB) Large Page Support? Memory fragmentation / Large Pages on Solaris x86

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  • eSTEP Newsletter December 2012

    - by uwes
    Dear Partners,We would like to inform you that the December issue of our Newsletter is now available.The issue contains informations to the following topics: Notes from Corporate: It's Earth day - Every Day, Oracle SPARC Newsletter, Pre-Built Developer VMs (for Oracle VM VirtualBox), Oracle Database Appliance Now Certified by SAP, Database High Availability, Cultivating Business-Led Innovation Technical Corner: Geek Fest! Talking About the Design of the T4 and T5 SPARC Chips, Blog: Is This Your Idea of Disaster Recovery?; Oracle® Practitioner Guide - A Pragmatic Approach to Cloud Adoption; Oracle Practitioner Guide: A pragmatic Approach to Cloud Adoption; Darren Moffat Explains the new ZFS Encryption Features in Solaris 11.1; Command Summary: Basic Operations with the Image Packaging System; SPARC T4 Server Delivers Outstanding Performance on Oracle Business Intelligence Enterprise Edition 11g; SPARC T4-4 Servers Set First World Record on PeopleSoft HCM 9.1 Benchmark; Sun ZFS Appliance Monitor Refresh: Core Factor Table; Remanufactured Systems Program for Sun Systems from Oracle; Reminder: Oracle Premier Support for Systems; Reminder: Oracle Platinum Services Learning & Events: eSTEP Events Schedule; Recently Delivered Techcasts; Webinar: Maximum Availibility with Oracle GoldenGate References: LUKOIL Overseas Holding Optimizes Oil Field Development Projects with Integrated Project Management; United Networks Increases Accounting Flexibility and Boosts System Performance with ERP Applications Upgrade; Ziggo Rapidly Creates Applications That Accelerate Communications-Service Orders l How to ...: The Role of Oracle Solaris Zones and Oracle Linux Containers in a Virtualization Strategy; How to Update to Oracle Solaris 11.1; Using svcbundle to Create Manifests and Profiles in Oracle Solaris 11.1; How to Migrate Your Data to Oracle Solaris 11 Using Shadow Migration; How to Script Oracle Solaris 11.1 Zones for Easy Cloning; How to Script Oracle Solaris 11 Zones Creation for a Network-in-a-Box Configuration; How to Know Whether T4 Crypto Accelerators Are in Use; Fault Handling and Prevention – Part 1; Transforming and Consolidating Web Data with Oracle Database; Looking Under the Hood at Networking in Oracle VM Server for x86; Best Way to Migrate Data from Legacy File System to ZFS in Oracle Solaris 11; Special Year End Article: The Top 10 Strategic CIO Issues For 2013 You find the Newsletter on our portal under eSTEP News ---> Latest Newsletter. You will need to provide your email address and the pin below to get access. Link to the portal is shown below.URL: http://launch.oracle.com/PIN: eSTEP_2011Previous published Newsletters can be found under the Archived Newsletters section and more useful information under the Events, Download and Links tab. Feel free to explore and any feedback is appreciated to help us improve the service and information we deliver.Thanks and best regards,Partner HW Enablement EMEA

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  • A simple deployment example using Oracle Solaris 11

    - by Glynn Foster
    Last week I was over in Melbourne and Sydney to present at an Oracle Technology Network System Administration Day. During a set of morning sessions, I presented on some of the new things that we've done in Oracle Solaris 11 and our focus for the future. One of the sessions I presented was giving a quick technical overview of what a typical application deployment scenario would look like using technologies like the Image Packaging System (IPS), Service Management Facility (SMF), Oracle Solaris Zones, and network virtualization. While it's just a simple example, it provides the basic building blocks for a more advanced configuration that a data center would typically deploy. Given these would likely be of general interest, I thought I'd upload the slides for others to view - enjoy! You can download the original source PPTX without some of the formatting errors in the above.

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  • Why do HDFS clusters have only a single NameNode?

    - by grautur
    I'm trying to understand better how Hadoop works, and I'm reading The NameNode is a Single Point of Failure for the HDFS Cluster. HDFS is not currently a High Availability system. When the NameNode goes down, the file system goes offline. There is an optional SecondaryNameNode that can be hosted on a separate machine. It only creates checkpoints of the namespace by merging the edits file into the fsimage file and does not provide any real redundancy. Hadoop 0.21+ has a BackupNameNode that is part of a plan to have an HA name service, but it needs active contributions from the people who want it (i.e. you) to make it Highly Available. from http://wiki.apache.org/hadoop/NameNode So why is the NameNode a single point of failure? What is bad or difficult about having a complete duplicate of the NameNode running as well?

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  • Why don't I have the option ''Install Ubuntu alongside with them''

    - by almqgh
    Why dont I have this option? here are my disk sudo fdisk -l Disk /dev/sda: 640.1 GB, 640135028736 bytes 255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x5b53cc54 Device Boot Start End Blocks Id System /dev/sda1 * 2048 409599 203776 7 HPFS/NTFS/exFAT /dev/sda2 409600 1153767021 576678711 7 HPFS/NTFS/exFAT /dev/sda3 1216962560 1250050047 16543744 7 HPFS/NTFS/exFAT /dev/sda4 1250050048 1250261679 105816 c W95 FAT32 (LBA) Disk /dev/sdb: 4005 MB, 4005527552 bytes 32 heads, 63 sectors/track, 3880 cylinders, total 7823296 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x20d8782d Device Boot Start End Blocks Id System /dev/sdb1 * 63 7822079 3911008+ c W95 FAT32 (LBA)

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  • Arçelik A.S. Uses Advanced Analytics to Improve Product Development

    - by Sylvie MacKenzie, PMP
    "Oracle’s Primavera P6 Enterprise Project Portfolio Management’s advanced analytics gives us better insight into the product development process by helping us to identify potential roadblocks.” – Iffet Iyigun Meydanli, Innovation and System Development Manager, R&D Center, Arçelik A.S. Founded in 1955, Arçelik A.S. is now the leading household appliance manufacturer in Turkey, and the third-largest household appliance company in Europe. It operates 14 production facilities in five countries (Turkey, Romania, Russia, China, and South Africa), with international sales and marketing offices in 20 countries. Additionally, the company manages 10 brands (Arçelik, Beko, Grundig, Blomberg, Elektrabregenz, Arctic, Leisure, Flavel, Defy, and Altus). The company has a household presence in more than 100 countries, including China and the United States. Arçelik’s Beko brand is among the top-10 household appliance brands in world, as a market leader for refrigerators, freezers, and washing machines in the United Kingdom. Arçelik implemented Oracle’s Primavera P6 Enterprise Project Portfolio Management for improved management of its design and manufacturing projects. With the solution, Arelik has improved its research and development (R&D) with the ability to evaluate technology risks when planning its projects. Also, it is now more easy to make plans for several locations, monitor all resources, and plan for future projects.  Challenges Improve monitoring of R&D resources?including human resources and critical laboratory equipment?to optimize management of the company’s R&D project portfolio Establish a transparent project platform to enable better product and process planning, gain insight into product performance, and facilitate advanced analytics that support R&D and overall business decisions Identify potential roadblocks for better risk management Solutions Worked with Oracle Partner PRM to implement Oracle’s Primavera P6 Enterprise Project Portfolio Management to manage the entire household-appliance, R&D project portfolio lifecycle, enabling managers and project leaders to better track and monitor resources and deliverables in real time Improved risk analysis and evaluation abilities for R&D projects Supported long-term planning needs Used advanced reporting features to capture data needed for budgeting and other project details, including employee performance evaluations Improved monitoring abilities and insight into the overall performance of products postproduction Enabled flexible, fast, and customized reporting with the P6 dashboard on a centralized platform to meet custom reporting needs for project leaders and support on-time and on-budget deliverables Integrated with other corporate departments, such as accounts payable, to upload project invoice data into the Primavera solution and the company’s e-mail system, so that project leaders will be alerted about milestones and other project related information Partner“Oracle Partner PRM provided us with a quick, reliable, and solution-focused approach to its support,” said Iffet Iyigun Meydanli, innovation and system development manager, R&D Center, Arçelik A.S. “The company’s service covered the entire spectrum of our needs, including implementation, training, configuration, problem solving, and integration.”

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  • Xerox 3100 mfp printer/ scanner not working not working

    - by Nikos
    I have installed the latest version of Ubuntu on my system. My problem is I cannot find the proper drivers for my printer/ scanner:Xerox Phaser 3100 MFP. Although it is recognised by the system and my print jobs appear as completed, in fact they are not. Also I have a problem with my wireless connectio. Although it is configured in the network settings, connection is not successful, unless I restart my router. What can I do? Thank you in advance

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  • locally logged on a domain joined Win 7 = no authentication prompt so no printing

    - by lyngsie
    We have problems with Win 7 PC's when the user only log on locally on (a domain joined) PC, but still use the Windows printserver. Installed printers suddently stop working and seem to appear offline. In Windows XP the (logged on locally) user would be prompted to autheticate to the domain when printing, but in Windows 7 this feature seem to be faulty or not implemented. I assume the problem is a timeout on the Kerberos ticket. Of course the user has to authenticate to install the printer from the printserver, and that works fine, but in time the authenticaton stops, and no prompt appear. Any suggestions how we can "force" a prompt to authenticate like it happened in XP?

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  • exact point oh a rotating sphere

    - by nkint
    I have a sphere that represents the heart textured with real pictures. It's rotating about the x axis, and when user click down it has to show me the exact place he clicked on. For example if he clicked on Singapore and the system should be able to: understand that user clicked on the sphere (OK, I'll do it with unProject) understand where user clicked on the sphere (ray-sphere collision?) and take into account the rotation transform sphere-coordinate to some coordinate system good for some web-api service ask to api (OK, this is the simpler thing for me ;-) some advice?

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  • Unable to start backuppc

    - by iUngi
    I had a ext4 drive today I replaced with a RAID drive, I moved all the files from the old HDD. After that I tried to start the Backuppc but I'm getting the following error: Can't create a test hardlink between a file in /media/WESYS_RAID/backups/nbackuppc/pc and /media/WESYS_RAID/backups/nbackuppc/cpool. Either these are different file systems, or this file system doesn't support hardlinks, or these directories don't exist, or there is a permissions problem, or the file system is out of inodes or full. Use df, df -i, and ls -ld to check each of these possibilities. Quitting... The permission looks like this: drwxrwxrwx 2 backuppc backuppc 4096 2012-04-12 11:06 cpool -rwxrwxrwx 1 backuppc backuppc 14290 2012-04-10 16:00 dead.letter drwxrwxrwx 2 backuppc backuppc 4096 2012-04-12 10:56 log drwxrwxrwx 2 backuppc backuppc 4096 2012-04-12 11:08 pc drwxrwxrwx 2 backuppc backuppc 4096 2011-10-27 22:40 pool drwxrwxrwx 2 backuppc backuppc 4096 2011-10-27 22:40 trash I also tried to create hardlinks and it does work ln -i test.txt testlink The result of the df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/sdc 122101760 1279684 120822076 2% /media/WESYS_RAID /dev/mapper/WeSyS_LVM 115687424 308565 115378859 1% /media/WESYS_LVM What am I doing wrong?

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  • Strategy to use two different measurement systems in software

    - by Dennis
    I have an application that needs to accept and output values in both US Custom Units and Metric system. Right now the conversion and input and output is a mess. You can only enter in US system, but you can choose the output to be US or Metric, and the code to do the conversions is everywhere. So I want to organize this and put together some simple rules. So I came up with this: Rules user can enter values in either US or Metric, and User Interface will take care of marking this properly All units internally will be stored as US, since the majority of the system already has most of the data stored like that and depends on this. It shouldn't matter I suppose as long as you don't mix unit. All output will be in US or Metric, depending on user selection/choice/preference. In theory this sounds great and seems like a solution. However, one little problem I came across is this: There is some data stored in code or in the database that already returns data like this: 4 x 13/16" screws, which means "four times screws". I need the to be in either US or Metric. Where exactly do I put the conversion code for doing the conversion for this unit? The above already mixing presentation and data, but the data for the field I need to populate is that whole string. I can certainly split it up into the number 4, the 13/16", and the " x " and the " screws", but the question remains... where do I put the conversion code? Different Locations for Conversion Routines 1) Right now the string is in a class where it's produced. I can put conversion code right into that class and it may be a good solution. Except then, I want to be consistent so I will be putting conversion procedures everywhere in the code at-data-source, or right after reading it from the database. The problem though is I think that my code will have to deal with two systems, all throughout the codebase after this, should I do this. 2) According to the rules, my idea was to put it in the view script, aka last change to modify it before it is shown to the user. And it may be the right thing to do, but then it strikes me it may not always be the best solution. (First, it complicates the view script a tad, second, I need to do more work on the data side to split things up more, or do extra parsing, such as in my case above). 3) Another solution is to do this somewhere in the data prep step before the view, aka somewhere in the middle, before the view, but after the data-source. This strikes me as messy and that could be the reason why my codebase is in such a mess right now. It seems that there is no best solution. What do I do?

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  • How to use graphical line drawing characters with Midnight Commander on OS X under ssh?

    - by Sorin Sbarnea
    I discovered that when I do ssh to a machine using OS X 10.6 and use mc I do not see the graphical line drawing characters. This does not happen if I open terminal and start mc. I'm connecting using putty configured to use xterm-color, configuraton that works just fine if I do ssh to a linux machine. The mc from OS X is version 4.7.0 (installed using macports). What locale returns: LC_CTYPE="C" <== ssh LC_CTYPE="UTF-8" <== Terminal.app ssh: mc display bits shows: 7-bit ASCII (changing does not help, it defaults to the same value) Terminal.app: mc display bits shows: UTF-8 The environment shows TERM=xterm-color in both cases Terminal.app and ss but mc looks different. I filed a bug to mc with this information at http://www.midnight-commander.org/ticket/2339

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  • Pppoe wireless connection, Ubuntu 12.4

    - by Barbara
    I recently bought a new computer (Asus 1015 cx) with Ubuntu (12.4) as preinstalled system. My problem is with the internet. The computer connects just fine to the free wifi we have at home, but in college, we have a little bit different system. There is wifi, but it is not free - everyone receives a user name and a password. I cant manage to estabilish this Pppoe connection - the computer "sees" where can it connect, but I dont know where to write my username and password. It is not the DSL connection, what I have already tried. Can you help me?

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  • Installed fprint, can't login anymore

    - by Otto
    Tried Fprint, was stupid enough not to backup the common-auth file before changing it. Somehow I'm locked out of the system, trying to fingerscan doesn't do any difference. Even when I've done it 5 times and it asks for password, when it asks for password and I write it in and it says that it's the wrong password. I use the same password for root as for my user. Tried to go into Recovery Mode - root - sudo nano /etc/pam.d/common-auth and remove the rows saying that you need the fingerprint to login, but when I try to overwrite, it says the file is read only, even when I try to open it with root. I have a lot of schoolwork files and programs on the system, so I can't afford losing them. Help?

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