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  • Installation of Ubuntu 12.04 LTS is Crashing from Live CD

    - by Daniel Evans
    Hardware: Dell Inspiron 1545 Steps are as follows: Insert Ubuntu 12.04 disc Boot computer Output is as follows error: unexpectedly disconnected from boot status daemon Generating locales... en_US.UTF-8... done Generation complete. ***MEMORY-ERROR***: glib-compile-schemas[569]: GSlice: assertion failed: aligned_memory == (gpointer) addr Aborted pwconv: failed to change the mode of /etc/passwd- to 0600 ***MEMORY-ERROR***: [996]: GSlice: assertion failed: aligned_memory == (gpointer) addr ***MEMORY-ERROR***: glib-compile-scehmas[1034]: GSlice: assertion failed: aligned_memory == gpointer) addr Aborted /usr/lib/python2.7/dist-packages/LanguageSelector/LocaleInfo.py:256: UserWarning: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory warnings.warn(msg.args[0].encode('UTF-8')) Using CD-ROM mount point /cdrom ... etc etc... End up at a prompt line ubuntu@ubuntu:~$ The computer's self tests have given the following three errors (so far): Error Code OFOO:O65D Msg DISK-DST Self-test read error SATA Disk S/N=.... Confidence Test Fail Error Code 0F00:1332 Msg: DISK- Block 418047942: Interrupt Request (IRQ) Error Code: 0142 HD0 self test unsuccessful Status 79

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  • What should I quote for a project I hope to get a job at the end of?

    - by thesunneversets
    Long story short: I applied for a (CakePHP, MySQL, etc) development job in London, UK. I grew up in Britain but am currently based quite a few thousand miles away in Canada, so I wasn't really expecting success. But quite a few emails and phone interviews later it seems that they really like me. At least to a point. Because such a major relocation would be a horrible thing to go wrong, they've sensibly suggested a trial run of getting me to build a website at a distance. I have the spec for this and it's quite a substantial amount of work. My problem is that I now need to suggest both a fee and a timescale for the job, and I haven't got any significant experience of working as a contractor. Looking at the spec, which is 1500 words of many concisely stated features, some fairly trivial and some moderately involved, I can easily imagine there being 2 weeks of intensive work there. (If everything went really well it might be closer to one week, but even though I want to impress, I definitely don't want to fall into the inexperienced-contractor trap of massively underestimating the amount of time a project will run to.) As an extra complication, there is no expectation that I should give up my day job to get this trial project done, so the hours will have to be clawed from evenings and weekends. I don't want to overcommit to a quick delivery date, only to find myself swiftly burning out due to an unrealistic workload. So, any advice for me? My main question is, what is a realistic hourly figure to demand of a stable but not excessively wealthy London-based company in the current market, bearing in mind that I'd like them to hire me afterwards? But any more general recommendations based on my circumstances above would be much appreciated too. Many thanks!

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  • having trouble getting audio drivers

    - by barry
    i'm trying to install the audio driver for my laptop and having problems. everything works great except for no audio. i locate the file, download it, try to open it, and this is what i get: Archive: /home/barry/Downloads/Audio_Conexant_v.6.14.10.575_XPx86/HXFSetup.exe [/home/barry/Downloads/Audio_Conexant_v.6.14.10.575_XPx86/HXFSetup.exe] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. zipinfo: cannot find zipfile directory in one of /home/barry/Downloads/Audio_Conexant_v.6.14.10.575_XPx86/HXFSetup.exe or /home/barry/Downloads/Audio_Conexant_v.6.14.10.575_XPx86/HXFSetup.exe.zip, and cannot find /home/barry/Downloads/Audio_Conexant_v.6.14.10.575_XPx86/HXFSetup.exe.ZIP, period. can anyone help me out here? thanks

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  • Help with complex MVVM (multiple views)

    - by jsjslim
    I need help creating view models for the following scenario: Deep, hierarchical data Multiple views for the same set of data Each view is a single, dynamically-changing view, based on the active selection Depending on the value of a property, display different types of tabs in a tab control My questions: Should I create a view-model representation for each view (VM1, VM2, etc)? 1. Yes: a. Should I model the entire hierarchical relationship? (ie, SubVM1, HouseVM1, RoomVM1) b. How do I keep all hierarchies in sync? (e.g, adding/removing nodes) 2. No: a. Do I use a huge, single view model that caters for all views? Here's an example of a single view Figure 1: Multiple views updated based on active room. Notice Tab control Figure 2: Different active room. Multiple views updated. Tab control items changed based on object's property. Figure 3: Different selection type. Entire view changes

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  • Tuning Red Gate: #2 of Many

    - by Grant Fritchey
    In the last installment, I used the SQL Monitor tool to get a snapshot view of the current state of the servers at Red Gate that are giving us trouble. That snapshot suggested some areas where I should focus some time, primarily in which queries were being called most frequently or were running the longest. But, you don't want to just run off & start tuning queries. Remember, the foundation for query tuning is the server itself. So, I want to be sure I'm not looking at some major hardware or configuration issues that I need to address first. Rather than look at the current status of the server, I'm going to look at historical data. Clicking on the Analysis tab of SQL Monitor I get a whole list of counters that I can look at. More importantly, I can look at them over a period of time. Even more importantly, I can compare past periods with current periods to see if we're looking at a progressive issue or not. There are counters here that will give me an indication of load, and there are counters here that will tell me specifics about that load. First, I want to just look at the load to understand where the pain points might be. Trying to drill down before you have detailed information is just bad planning. First thing I'm going to check is the CPU, just to see what's up there. I have two servers I'm interested in, so I'll show you both: Looking at the last 30 days for both servers, well, let's just say that the first server is about what I would expect. It has an average baseline behavior with occasional, regular, peaks. This looks like a system with a fairly steady & predictable load that probably has a nightly batch process that spikes the processor. In short, normal stuff. The points there where the CPU drops radically. that might be worth investigating further because something changed the processing on this system a lot. But the first server. It's all over the place. There's no steady CPU behavior at all. It's spike high for long periods of time. It's up, it's down. I'm really going to have to spend time looking at CPU issues on this server to try to figure out what's up. It might be other processes being shared on the server, it might be something else. Either way, I'm going to have to spend time evaluating this CPU, especially those peeks about a week ago. Looking at the Pages/sec, again, just a measure of load, I see that there are some peaks on the rg-sql02 server, but over all, it looks like a fairly standard load. Plus, the peaks are only up to 550 pages/sec. Remember, this isn't a performance measure, but just a load measurement, but from this, I don't think we're looking at major memory issues, but I may want to correlate these counters with the CPU counters. Again, the other server looks like there's stuff going on. The load is not at all consistent. In fact there was a point earlier in the year that looks pretty severe. Plus the spikes here are twice the size of the other system. We've got a lot more load going on here and I will probably need to drill down on memory usage on this server. Taking a look at the disk transfers/sec the load on both systems seems to roughly correspond to the other load indicators. Notice that drop right in the middle of the graph for rg-sql02. I wonder if the office was closed over that period or a system was down for maintenance. If I saw spikes in memory or disk that corresponded to the drip in CPU, you can assume something was using those other resources and causing a drop, but when everything goes down, it just means that the system isn't gettting used. The disk on the rg-sql01 system isn't spiking exactly the same way as the memory & cpu, so there's a good chance (chance mind you) that any performance issues might not be disk related. However, notice that huge jump at the beginning of the month. Several disks were used more than they were for the rest of the month. That's the load on the server. What about the load on SQL Server itself? Next time.

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  • Windows Intune, Cloud Desktop management

    - by David Nudelman
    As a part of Microsoft Cloud computing strategy, Windows Intune beta was released today. Here’s a quick overview of what customers and IT consultants can do with the cloud service component of Windows Intune: Manage PCs through web-based console: Windows Intune provides a web-based console for IT to administrate their PCs. Administrators can manage PCs from anywhere. Manage updates: Administrators can centrally manage the deployment of Microsoft updates and service packs to all PCs. Protection from malware: Windows Intune helps protect PCs from the latest threats with malware protection built on the Microsoft Malware Protection Engine that you can manage through the Web-based console. Proactively monitor PCs: Receive alerts on updates and threats so that you can proactively identify and resolve problems with your PCs—before it impacts end users and your business. Provide remote assistance: Resolve PC issues, regardless of where you or your users are located, with remote assistance. Track hardware and software inventory: Track hardware and software assets used in your business to efficiently manage your assets, licenses, and compliance. Set security policies: Centrally manage update, firewall, and malware protection policies, even on remote machines outside the corporate network. And here a quick video about Windows Intune For support and questions go to : TechNet Forums for Intune Regards, David Nudelman

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  • Open source alternative for Canonical Landscape? [on hold]

    - by netvope
    From Canonical: Landscape is an easy-to-use systems management and monitoring service that enables you to manage multiple Ubuntu machines as easily as one through a simple Web-based interface. However, Landscape is not free. The RedHat counterpart Satellite has a free version called Spacewalk, but it doesn't work on Ubuntu. (There is an attempt to port Spacewalk to Debian, but it doesn't look like it's stable yet.) Are there any open source alternative to Landscape? Better yet, are there any Spacewalk-like software that works for both RedHat-based and Debian-based systems?

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  • No space on device

    - by user170810
    Today I tried to move a huge directory to a common directory for 2 users. I first tried to change the permissions of my home directory. So something happened with my ~/.private directory and the disk was full! I have a 2 TB disk. I cannot make a backup, I cannot even enter graphics mode. Please help. Are there a way to restore my contents without making backup? Even creating ~/Private is impossible -- "no space on the device". I have no Private, and don't tell me that I have erased it, because it is not true. Are there some utilities to restore the files and make them not encrypted?

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  • Postfix and tmpfs for /var/spool

    - by Rob Fisher
    My main disk is an SSD so in order to preserve its lifetime by reducing writes I followed some advice and made /var/spool a ram disk by adding this line to /etc/fstab: tmpfs /var/spool tmpfs defaults,noatime,mode=1777 0 0 Later I configured postfix because I have a RAID array on my system and mdadm wants to send me email if the RAID array fails which sounds like a fine idea. Email sending worked fine until I rebooted, at which point: postfix: fatal: open /etc/postfix-out/main.cf: No such file or directory The fix for this is apparently: mkdir /var/spool/postfix postfix check Then I found I also had to do: mkfifo /var/spool/postfix/public/pickup service postfix restart Now sending emails works fine...until the next reboot. So: what is the most correct way to recreate the contents of /var/spool/postfix automatically at boot time if it does not exist? I am using Ubuntu Server 12.04.

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  • BI Applications 7.9.6.3 and EBS 12.1.3 Vision: Integrated Demo Environments

    - by Mike.Hallett(at)Oracle-BI&EPM
    If you need a combined BI-Applications + eBusiness Suite Applications demonstration environment, or for proof of concept work for your customers, then these versions of images on Oracle Virtual Box are now available for partners to download and use.  To get access to these images, Partners must be OPN members, specialised in OBI or BI-Apps.   This is an integrated Demo/Test Drive/POC/Self Enablement environment including two separate images (in English) representing the entire Oracle Stack – Applications, Middleware, Database, Operating System and Virtual Machine. Minimum Hardware requirements for each image to run separately 4GB RAM Minimum Hardware requirements for both images to run concurrently 8GB RAM Dual CPU 64 bit OS   BI Applications 7.9.6.3 Linux based and running on Oracle Virtual Box and compatible with OVM Image Content: BI Application Analytics demo data extracted from EBS 12.1.3 Vision for Financials and HR using EBS 12.1.3 Vision (image supplied) Built Integration to EBS 12.1.3 Vision image (provided). Fully functional BI Applications 7.9.6.3 software install and configuration Image can be connected to load any data from any other compatible source system. BI Apps Demo data is based on OOTB EBS Vision 12.1.3 Configured to run BI Apps data load for all other modules of EBS 12.1.3 Vision. Includes OBIEE Sample demonstration content Documented scripts for running presentations, demonstrations and Test Drives Image Size: 34GB zip, 84GB unzip.  Min Hardware 4GB RAM         EBS Vision 12.1.3 Linux based and running on Oracle Virtual Box and compatible with OVM Image Content: eBusiness Suite (EBS) Applications Vision 12.1.3 Standard Vision instance with all given setups, configurations and data Source system for BI Apps 7.9.6.3 Image Size: 76GB zip, 300GB unzip.  Min Hardware 4GB RAM Distribution: The Virtual Box images are posted on an external FTP server @ BI Applications 7.9.6.3 EBS12.1.3   To download, Partners need to request the current password to access the images.  To request the current ftp.oracle.com password and the password required to unzip the images, please email Marek Winiarski   Support Contact =  Marek Winiarski: Oracle Partner Solution Consultant

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  • How advanced are author-recognition methods?

    - by Nick Rtz
    From a written text by an author if a computer program analyses the text, how much can a computer program tell today about the author of some (long enough to be statistically significant) texts? Can the computer program even tell with "certainty" whether a man or a woman wrote this text based solely on the contents of the text and not an investigation such as ip numbers etc? I'm interested to know if there are algorithms in use for instance to automatically know whether an author was male or female or similar characteristics of an author that a computer program can decide based on analyses of the written text by an author. It could be useful to know before you read a message what a computer analyses says about the author, do you agree? If I for instance get a longer message from my wife that she has had an accident in Nigeria and the computer program says that with 99 % probability the message was written by a male author in his sixties of non-caucasian origin or likewise, or by somebody who is not my wife, then the computer program could help me investigate why a certain message differs in characteristics. There can also be other uses for instance just detecting outliers in a geographically or demographically bounded larger data set. Scam detection is the obvious use I'm thinking of but there could also be other uses. Are there already such programs that analyse a written text to tell something about the author based on word choice, use of pronouns, unusual language usage, or likewise?

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  • How can one unlock a fully encrypted Ubuntu 11.10 system over SSH at boot?

    - by Jeff
    In previous versions of Ubuntu, and current versions of Debian, you can unlock a fully encrypted system (using dmcrypt and LUKS) at boot time over SSH. It was as easy as: Installing the encrypted system using the Ubuntu alternate installer disk or normal Debian installer disk and choosing to encrypt the system. After the system is installed, adding the dropbear and busybox packages. Updating the initram-fs to authorize your ssh key. At boot time, you'd just ssh to the machine, and do: echo -ne "keyphrase" > /lib/cryptsetup/passfifo The machine would then unlock and boot the encrypted system. Using the exact same steps on Ubuntu 11.10, I can ssh to the machine, but /lib/cryptsetup/passfifo doesn't exist. There appears to be no way to unlock the system over ssh. I'm not sure where to look to see if this functionality changed or if it was removed.

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  • Lightest weight ubuntu desktop for text editing in big terminal windows?

    - by Kevin Pauli
    I have an older windows laptop onto which I'm installing ubuntu within a VM. My goal is just to use terminal-based linux tools such as vim and shell scripting. I don't give a hoot about any gui for this box. So I first installed ubuntu minimalcd and chose "Basic Ubuntu Server". Upon boot, the text-based terminal came up and I logged in, but the problem is it only gives me 80 columns. I want to do terminal mode vim but have a couple hundred columns to take advantage of my large monitor. If you happen to know how to do that, please see my question here . This post is assuming that the other question is not answerable, and that I will need a desktop to get more than 80 columns in a terminal window. So if that is the case, I want the lightest weight one possible, because this is older hardware and all I want is the ability to have nice big text-based terminal windows for editing text. From the ubuntu minimal CD, I see options for Edubuntu, Kubuntu, etc. Which one of the available desktops would be a good choice for my needs?

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  • Can't boot Ubuntu 12.04

    - by carlo
    I installed 12.04 on my windows vista laptop. I wanted to make run Ubuntu and ditch windows. I selected to delete disk and install 12.04. It won't let boot 12.04 with out the install disk. When I turn on my laptop now it goes to a black screen with a blinking cursor. I have to power off then insert Ubuntu 12.04 cd as if it wants me to reinstall. I checked the drive and Ubuntu is there with some of my other saves as well. Can someone help me please?

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  • grub problem after grub-repair

    - by alireza
    I had two OS,win 7 and Ubuntu, I was working with win and went out of the room and when came back I saw Grub Rescue!!! I booted live and did grub_repaire and it still says multiple active partitions.operating system not found I feel that it can not find the ubuntu hard drive at all! ! ubuntu@ubuntu:/dev$ sudo fdisk -l Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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: 0xde771741 Device Boot Start End Blocks Id System /dev/sda1 * 61 61 0 0 Empty /dev/sda2 2048 30146559 15072256 27 Hidden NTFS WinRE /dev/sda3 * 30146560 30351359 102400 7 HPFS/NTFS/exFAT /dev/sda4 30351360 334483299 152065970 7 HPFS/NTFS/exFAT ubuntu@ubuntu:/dev$ ls autofs dvdrw loop4 ppp ram5 shm tty15 tty29 tty42 tty56 ttyS10 ttyS24 uinput vcsa1 block ecryptfs loop5 psaux ram6 snapshot tty16 tty3 tty43 tty57 ttyS11 ttyS25 urandom vcsa2 bsg fb0 loop6 ptmx ram7 snd tty17 tty30 tty44 tty58 ttyS12 ttyS26 usbmon0 vcsa3 btrfs-control fd loop7 pts ram8 sr0 tty18 tty31 tty45 tty59 ttyS13 ttyS27 usbmon1 vcsa4 bus full loop-control ram0 ram9 stderr tty19 tty32 tty46 tty6 ttyS14 ttyS28 usbmon2 vcsa5 cdrom fuse mapper ram1 random stdin tty2 tty33 tty47 tty60 ttyS15 ttyS29 v4l vcsa6 cdrw fw0 mcelog ram10 rfkill stdout tty20 tty34 tty48 tty61 ttyS16 ttyS3 vcs vcsa7 char hpet mei ram11 rtc tty tty21 tty35 tty49 tty62 ttyS17 ttyS30 vcs1 vga_arbiter console input mem ram12 rtc0 tty0 tty22 tty36 tty5 tty63 ttyS18 ttyS31 vcs2 video0 core kmsg net ram13 sda tty1 tty23 tty37 tty50 tty7 ttyS19 ttyS4 vcs3 zero cpu log network_latency ram14 sda2 tty10 tty24 tty38 tty51 tty8 ttyS2 ttyS5 vcs4 cpu_dma_latency loop0 network_throughput ram15 sda3 tty11 tty25 tty39 tty52 tty9 ttyS20 ttyS6 vcs5 disk loop1 null ram2 sda4 tty12 tty26 tty4 tty53 ttyprintk ttyS21 ttyS7 vcs6 dri loop2 oldmem ram3 sg0 tty13 tty27 tty40 tty54 ttyS0 ttyS22 ttyS8 vcs7 dvd loop3 port ram4 sg1 tty14 tty28 tty41 tty55 ttyS1 ttyS23 ttyS9 vcsa ubuntu@ubuntu:/dev$ someone said { Remove the boot flag from sda1, by typing in a terminal: sudo fdisk /dev/sda1 Then press the 'a' key, and 'Enter'. Then press the '1' key, and 'Enter'. Then press the 'w' key, and 'Enter'. } but after grub-repair I got this log: http://paste.ubuntu.com/1371297/ then I try sudo fdisk /dev/sda1 and But It says unable to open /dev/sda1! which is right as sda1 is not in dev folder (look at the picture!) Can anybody help me? I need to work on my windows for the rest of the semester and don't care of my ubuntu. thank you

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  • How Do I interpret HDD S.M.A.R.T Results?

    - by Marty
    My laptop has recently started to become a bit unreliable, and for some reason I started to suspect that my HDD was starting to fail. After a bit of hunting on the internet, I found Ubuntu's Disk Utility in the System menu and ran the long SMART diagnostics from this. However, since the documentation for Disk Utility is very poor (palimpsest?), I'm not sure how to interpret the results: For example, the Read Error Rate is over 50 million (!), yet the Assessment is rated "Good". So would someone mind explaining to me how to interpret the results of these tests (especially the Normalized, Worst, Threshold and Value numbers)? And maybe tell me what they think of the results I got for my HDD? (Thanks)

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  • This Week in Geek History: HAL Goes Live, First Alien Moon Landing, First Fighter Jet Ejection Seat

    - by Jason Fitzpatrick
    Every week we bring you interesting facts from the annuals of Geekdom. This week in Geek History saw the birth of HAL, the first landing on an alien moon, and the first real-world test of a fighter jet ejection seat. Latest Features How-To Geek ETC HTG Projects: How to Create Your Own Custom Papercraft Toy How to Combine Rescue Disks to Create the Ultimate Windows Repair Disk What is Camera Raw, and Why Would a Professional Prefer it to JPG? The How-To Geek Guide to Audio Editing: The Basics How To Boot 10 Different Live CDs From 1 USB Flash Drive The 20 Best How-To Geek Linux Articles of 2010 Calvin and Hobbes Mix It Up in this Fight Club Parody [Video] Choose from 124 Awesome HTML5 Games to Play at Mozilla Labs Game On Gallery Google Translate for Android Updates to Include Conversation Mode and More Move Your Photoshop Scratch Disk for Improved Performance Winter Storm Clouds on the Horizon Wallpaper Existential Angry Birds [Video]

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  • Meta description of my blog post changes

    - by Aadarsh sojitra
    I have some problems in Meta description tags in my Blogger blog. When I update my pages in search engine with the help of the Fetch as Google feature in GWT, all my blog's results comes with a correct meta description like Today I am back with a reason that "WHY IS ORIGINAL MEMORY IN HARD-DISK IS LESS THAN PRINTED" on a box. If we buy any hard-disk or a pen drive... But after approx 5-6 days, it changes to my blog's default meta description. This is also happening after changing the default meta description of my blog. I want only one answer that why its happening? After deleting my blog and creating a new blog with the same name this problem was solved. Why this problem was solved? - I am asking this question because to solve problems in the future.

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  • One page using querystring or many folders and pages?

    - by ClarkeyBoy
    I have an application where I have the 'core' code in one folder for which there is a virtual directory in the root, such that I can include any core files using /myApp/core/bla.asp. I then have two folders outside of this with a default.asp which currently use the querystring to define what page should be displayed. One page is for general users, the other will only be accessible to users who have permission to manage users / usergroups / permissions. The core code checks the querystring and then checks the permissions for that user. An example of this as it is now is default.asp?action=view&viewtype=list&objectid=server. I am not worried about SEO as this is an internal app and uses Windows Auth. My question is, is it better the way it is now or would it be better to have something like the following: /server/view/list/ /server/view/?id=123 /server/create/ /server/edit/?id=123 /server/remove/?id=123 In the above folders I would have a home page which defines all the variables which are currently determined by the querystring - in /server/create/ for example, I would define the action as 'create', object name as 'server' and so on. In terms of future development, I really have no idea which method would be best. I think the 2nd method would be best in terms of following what page does what but this is such a huge change to make at this stage that I would really like some opinions, preferably based on experience. PS Sorry if the tags are wrong - I am new to this forum and thought this was a bit too much of a discussion for StackOverflow as that is very much right / wrong answer based. I got the idea SE is more discussion based.

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  • I want to build a Virtual Machine, are there any good references?

    - by Michael Stum
    I'm looking to build a Virtual Machine as a platform independent way to run some game code (essentially scripting). The Virtual Machines that I'm aware of in games are rather old: Infocom's Z-Machine, LucasArts' SCUMM, id Software's Quake 3. As a .net Developer, I'm familiar with the CLR and looked into the CIL Instructions to get an overview of what you actually implement on a VM Level (vs. the language level). I've also dabbled a bit in 6502 Assembler during the last year. The thing is, now that I want¹ to implement one, I need to dig a bit deeper. I know that there are stack based and register based VMs, but I don't really know which one is better at what and if there are more or hybrid approaches. I need to deal with memory management, decide which low level types are part of the VM and need to understand why stuff like ldstr works the way it does. My only reference book (apart from the Z-Machine stuff) is the CLI Annotated Standard, but I wonder if there is a better, more general/fundamental lecture for VMs? Basically something like the Dragon Book, but for VMs? I'm aware of Donald Knuth's Art of Computer Programming which uses a register-based VM, but I'm not sure how applicable that series still is, especially since it's still unfinished? Clarification: The goal is to build a specialized VM. For example, Infocom's Z-Machine contains OpCodes for setting the Background Color or playing a sound. So I need to figure out how much goes into the VM as OpCodes vs. the compiler that takes a script (language TBD) and generates the bytecode from it, but for that I need to understand what I'm really doing. ¹ I know, modern technology would allow me to just interpret a high level scripting language on the fly. But where is the fun in that? :) It's also a bit hard to google because Virtual Machines is nowadays often associated with VMWare-type OS Virtualization...

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  • Is it safe to resize root partition?

    - by binW
    My HDD is partitioned into two equal sized partitions. First is being used for Windows and Second for Ubuntu. Everything is working fine. But now I want to remove Windows and use the disk completely for Ubuntu. I can easily boot from live cd and use GParted to delete Windows partition and then expand Ubuntu partition to use the whole hard disk. But I want to know if its safe i.e Will resizing Ubuntu partition change any thing else like the partition UUID or any thing else? Do I need to reinstall grub after resizing the root partition? It would be great if some one who has already done this can give their advice here.

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  • Is it true that first versions of C compilers ran for dozens of minutes and required swapping floppy disks between stages?

    - by sharptooth
    Inspired by this question. I heard that some very very early versions of C compilers for personal computers (I guess it's around 1980) resided on two or three floppy disks and so in order to compile a program one had to first insert the disk with "first pass", run the "first pass", then change to the disk with "second pass", run that, then do the same for the "third pass". Each pass ran for dozens of minutes so the developer lost lots of time in case of even a typo. How realistic is that claim? What were actual figures and details?

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  • grub2 loopback booting ubuntu server iso

    - by Thermionix
    I've got usb-keys setup to multi-boot different linux images using grub2 loopback. The standard ubuntu release isos boot fine, however when attempting to use the server iso it will fail to install saying 'unable to detect cd-media for installation'. the grub.cfg entry; menuentry "ubuntu-12.04-server-amd64" { set isofile="/boot/ubuntu-12.04-server-amd64.iso" loopback loop $isofile linux (loop)/install/vmlinuz file=$isofile/preseed/ubuntu-server.seed ro noprompt noeject -- initrd (loop)/install/initrd.gz } I've attempted to add the following parameters as the fromiso works for debian images on the key iso-scan/filename=/boot/ubuntu-12.04-server-amd64.iso iso-scan/filename=/dev/disk/by-uuid/2859-44B7/boot/ubuntu-12.04-server-amd64.iso fromiso=/dev/disk/by-uuid/2859-44B7/boot/ubuntu-12.04-server-amd64.iso

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  • KVM Guest installed from console. But how to get to the guest's console?

    - by badbishop
    I'm trying to install a fully virtualized guest (Fedora 14 x86_64) on KVM (RHEL 6), using command-line only (both hypervisor and guest). It goes without errors, and without a tangible result . I'd like to know how to do a text-only installation. So, here's what I've done: # virt-install \ --name=FE --ram=756 --vcpus=1 \ --file=/var/lib/libvirt/images/FE.img --network bridge:br0 \ --nographics --os-type=linux \ --extra-args='console=tty0' -v \ --cdrom=/media/usb/Fedora-14-x86_64-Live-Desktop.iso Starting install... Creating domain... | 0 B 00:00 Connected to domain FE Escape character is ^] ÿ Now what? As I understand after googling for a couple of days, I should see the guest's output from the text installation, but nothing happens. virt-viewer cannot connect to it, kindly suggesting that I explore all the options by adding --help (which I did). If I reconnect with virsh, I see this: Domain installation still in progress. You can reconnect to the console to complete the installation process. [root@v ~] # virsh console FEConnected to domain FE Escape character is ^] This shows that VM is running # virsh list Id Name State ---------------------------------- 8 FE running Qemu log: LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin /usr/libexec/qemu-kvm -S -M rhel6.0.0 -enable-kvm -m 756 -smp 1,sockets=1,cores=1,threads=1 -name FE -uuid 6989d008-7c89-424c-d2d3-f41235c57a18 -nographic -nodefconfig -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/FE.monitor,server,nowait -mon chardev=monitor,mode=control -rtc base=utc -no-reboot -boot d -drive file=/var/lib/libvirt/images/FE.img,if=none,id=drive-ide0-0-0,format=raw,cache=none -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive file=/media/usb/Fedora-14-x86_64-Live-Desktop.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:0a:65:8d,bus=pci.0,addr=0x2 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 char device redirected to /dev/pts/1 Output of /etc/libvirt/qemu/FE.xml # cat /etc/libvirt/qemu/FE.xml <domain type='kvm'> <name>FE</name> <uuid>6989d008-7c89-424c-d2d3-f41235c57a18</uuid> <memory>774144</memory> <currentMemory>774144</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel6.0.0'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source file='/var/lib/libvirt/images/FE.img'/> <target dev='hda' bus='ide'/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='1' unit='0'/> </disk> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:0a:65:8d'/> <source bridge='br0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target port='0'/> </console> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </memballoon> </devices> </domain> I'm obviously missing something that many others don't, but what is it? Thanx in advance!

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  • Remote install of Ubuntu Server

    - by David Walker
    Hi all, I have a machine located 500 miles away that's running Ubuntu 8.04. I figure it's just about time that I upgrade to the latest LTS. However, there's a software raid (md_raid) in there, and I'm afraid that just a dist-upgrade when I switch over the sources.list will end with catastrophic failure. Like a panic on boot that the raid'd disk can't be read, or something else. First, hoping that's not the case, however, if it ends up happening I'm wondering if there's a means of having someone drop in a Ubuntu 10.04 server install disk, and flip on ssh, and some means for me to hop on and re-run the installer remotely. Is this feasible? If so, what would one need to do aside run apt-get install ssh on the target machine? I do have friends who can be in front of the target machine to initiate the process, just not execute it out.

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