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• Kickstart virtual console: No 'Shell prompt' at Alt-F2

  - by Stefan Lasiewski

  I am installing Scientific Linux 6.1 via kickstart, and I am trying to debug a problem. According to Tips and tricks for anaconda and kickstart, I should have several virtual consoles available: What the different terminals display Alt-F1 The installation dialog when using text or cmdline Alt-F2 A shell prompt Alt-F3 The install log displaying messages from install program Alt-F4 The system log displaying messages from kernel, etc. Alt-F5 All other messages Alt-F7 The installation dialog when using the graphical installer The Virtual Consoles Alt-F1, F3, F4 & F5 all work and show various logging information. However, the Virtual Console at Alt-F2 does not do anything. I could really use access to the shell prompt (Alt-F2), however there is no Shell prompt available at the second virtual console (Alt-F2). All I have is a blinking '_'. Can I forge Alt-F2 to show me a shell prompt?

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• When and Where does Wubi mount it's virtual disks

  - by TuxPotato

  My use of the wubi-new-virtual-disk made Wubi start mounting this new virtual home disk over my /home folder. After the use of the script failed, I am left with Wubi constantly remounting an empty virtual disk over my /home folder. I followed the instructions on the Ubuntu website to revert the change, but the mounting continues. Where did Wubi put the mount operation, and how can I remove it? Thanks in advance!

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• Partioning logs in Tomcat by virtual host and app

  - by Robert Munteanu

  How can I instruct Tomcat to hold log files for each virtual host and app separately, similar to: ${tomcat.home}/logs/vhost-app-date.log This is under the assumption that I configure all virtual hosts to log to the console, and they are unaware of the virtual host and application name they're running under.

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• using wildcards in host-aliases for Tomcat's virtual hosts

  - by Marten Sytema

  I want to do the following with Tomcat 5.5: *.mydomain.com should go to my webapp, located at the virtual host mydomain.com. So I have a virtual host mydomain.com, and I want all *.mydomain.com also go there. Now, if I do this, it doesn't pick up the virtual host, and just goes to the default one (which is not set to mydomain.com). How to fix this? I basically would like to allow wildcards in the host alias, or in the virtual host name itself. (The DNS settings are alright by the way)

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• How to synchronize two folders on two remote Linux virtual machines

  - by Manoj Agarwal

  I have two virtual machines, Host OS is ESXi 3.5 and guest OS is Centos 4.6. There are two ESXi servers remotely located, each containing a Centos 4.6 virtual machine. I wish, whatever change I make in any file/folder in one virtual machine should be automatically synchronized on other remote virtual machine. The synchronization process should be automatic. It should only sync differentials, not simulate entire copy with overwrite operation. Sync should be intelligent enough to look for what has changed and what not, and should only update the changed files/folders. Further, there should be some sort of overview and selection for syncing, for example, if it shows 4 files have changed, It should be possible to sync only two files and leave other two for the time being. So, some intelligent syncing mechanism for Linux is needed.

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• MS Office on Virtual Machine (Parallels): licensing

  - by keijo

  I'm running Win XP on Parallels on my two home computers (iMac and macbook pro). I'm planning to buy Office 2010 Student version and install it on my virtual xp:s. How the licensing of MS Office goes on virtual machines? I'm worried about the scenario where I have to re-install virtual machines (which happens some time), and because of that I have to install Office 2010 Student version many times. I think that the licensing of MS Office Student version allows installation only for three times?

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• apache log analysis tools for multiple virtual hosts?

  - by shreddd

  I am interested in trying to get a side by side usage comparison of all the virtual hosts being served up by my apache server. In the simplest case, I want to see a list (or bar chart) with each virtual host and the number of requests/traffic on that site. I've been playing around with webalyzer and awstats but I haven't been able to compare multiple virtual hosts in the same infographic. Anyone have any suggestions on tools for doing this (or how I might use the above tools to do so)?

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• Sharing settings between a few virtual hosts in Apache

  - by Ivan Virabyan

  There are many virtual hosts in my apache configuration, each having quite a big amount of settings. The problem is that most of the virtual servers have the same settings. So config file is huge, full of identical virtual hosts, that differ only by ServerName directive. To change or add setting, I need to go through all of these vhosts. Is it possible to somehow share settings between virtual hosts, but still having few of them with their own ones? I hoped dynamic vhosts would be a good solution, but as I understand, it doesn't fit my problem, because there is no way to set specific settings for some of the vhosts. Furthermore I don't want my vhosts to be dynamic, because I have a fixed number of them. ServerAlias directive is also not a solution, because I need to know what url the user came from.

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• Samba server with Virtual Box Guest

  - by Anwar Shah

  I want to setup a samba server on My Ubuntu host for My Windows Guest in Virtual Box. I am using Ubuntu 12.04 and Windows version is Windows XP. VirtualBox 4.1.0.0 The Question is : How can I achieve this or Is it possible? Note: I am not trying to use the shared folder feature of Virtual Box. I used that feature already. Please Remember that I have only a physical machine. The other one is virtual.

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• Setting up virtual network in VMware workstation

  - by Saif Bechan

  I am playing around with VMware workstation and am trying to set up a small virtual network. I am having a little trouble with this I hope somebody can help me out. I want to have all the different virtual machines to have different internal IP adresses so I can ping them SSH etc, from within my windows machine. I am directly connected to the internet without a router, so using a bridged connection does not seem to work. The other options NAT and host-only do not seem to work also. I think i need to create a new adapter. I am testing this out with a virtual image of linux debain 5.0 lenny. I have WMware Workstation 7 with virtual network editor. Can anyone guide me in the right direction.

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• Setting up Virtual Host in Fedora Core 15 using apache

  - by Roland

  I'm trying to setup a couple of Virtual Host files on my Localhost PC running Fedora Core 15. Now I get this working, but now onloy one Virtual Host site works, and if I type in 127.0.0.1/test/testApp.php which is not related to the Virtual Host site , I get redirected to the Virtual Host site. Here's what I did. I created a new folder called virtualhosts in /etc/httpd/ where all my host files are stored in the following format site.conf In /etc/conf/httpd.conf I enabled NameVirtualHost *:80 and included the host files at the bottom of the config page like this Include virtualhosts/*.conf In /etc/hosts I added the line 127.0.0.1 website No when I run sudo httpd -t I get Syntax OK I restart apache and then the Virtualhost works, but as soon as I add other hosts and only use 127.0.0.1 as above it still links to the original host. Am I doing anything wrong here or left out something? An example of my Virtual Host file looks like this <VirtualHost *:80> ServerAdmin [email protected] DocumentRoot /var/www/html/website/ ServerName website ServerAlias website ErrorLog logs/dev-error_log CustomLog logs/dev-access_log common Alias /blog /var/www/html/blog/ <Directory /var/www/html/website/> Options FollowSymLinks Allow Override All Order allow,deny allow from all </Directory> #php_value error_reporting E_ALL & ~E_NOTICE & ~E_DEPRECATED php_flag display_errors On php_value date.timezone Europe/London </VirtualHost>

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• How to clone & restore virtual box hard drive

  - by user23950

  What I want to do is to clone my virtual box hdd with dual boot os. Xp and Vista. I'm using acronis and back it up on a flash drive. And end up with the flash drive that is partitioned. 2 partitions just like the virtual box hard disk. What do I do to restore it. I'm running acronis inside virtual box. What do I do to make use of the backup and actually restore what I've back up. And to be able to boot to xp and vista again inside virtual box. Please help.

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• xen virtual machines get to many porcentages of cpus

  - by ki0

  Hi everyone, This is my question. I have one Xen server with 8 CPU's and 6 virtual machine running, each virtual hard disk are running in diferent physical hardisk. Everything worked fine but sometimes one virtual machine get almost whole CPU, if the Domain-0 is 90% that is normal, the virtual machine is 500% usage of CPU. I have improved that it is not depends who are working with the VM even when nobody are working with the server this still happens. I dont know what happen. Anyone have any idea?¿ or anyone have happened the same?¿

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• Windows failover cluster - virtual node with multiple Client Access Names

  - by mclaassen

  I recently encountered a customer environment in which they had failover cluster where one of the virtual nodes had more than one 'Client Access Name' (i.e. more than one IP address and DNS name for the single virtual node). Long story short we had to modify our software to deal with this situation, but we want to recreate the situation in house to test it before releasing. I have been unable to locate any information about how or why you would end up with a virtual node that has more than one access name. Does anyone know how I can set up a Windows failover cluster where a virtual node has more than one access name/IP?

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• Mounting external usb harddisk (ext4) in virtual box in windows

  - by twall

  I would like to mount my external linux formatted usb harddrive in a virtual machine. The host is windows 7. Unfortunately virtual box doesn't enumerate the external harddrive in the options menu of the virtual machine, even though it shows all other devices connected to the host. Windows can find the harddrive, but obviously just gives me the option to reformat it, because it doesn't support ext4. (ext2fsd or Ext2Read are no options, as I need newer ext4 features) How can I add a filter for my external harddrive so it is recognized by my virtual machine?

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• XP Mode (Windows Virtual PC for Windows 7) no longer requires hardware virtualisation - hurrah !

  - by Liam Westley

  Windows Virtual PC (aka XP Mode) When XP Mode was released, it insisted on hardware virtualisation being present on your CPU and enabled in the BIOS.  Given that Windows Virtual PC was based on an improved Virtual PC 2007, which provided hardware virtualisation as a user selectable option, I did wonder why on earth Microsoft thought this was a good idea.  Not only do many people not have a CPU with hardware virtualisation support, some manufacturers don't provide a BIOS option to enable this setting, especially on laptops - yes Sony, Toshiba and Acer, I'm looking at you. Dumb and dumber This issue became a double whammy; not only was Microsoft a bit dumb on not supporting Windows Virtual PC without hardware virtualisation, your hardware manufacturer was also dumb in not supporting the option in the BIOS. Microsoft update to Windows Virtual PC Belatedly, Microsoft has seen the problem with this hardware virtualisation requirement and has now released a new version of Windows Virtual PC that works without hardware virtualisation.  This is really good news for those with older (or limited) CPUs and rubbish BIOS firmware. You can details of how to download the new versions of XP Mode here, http://blogs.msdn.com/virtual_pc_guy/archive/2010/03/18/windows-virtual-pc-no-hardware-virtualization-update-now-available-for-download.aspx And there is also an explanation of why the hardware virtualisation requirement was in place for previous releases, http://blogs.msdn.com/virtual_pc_guy/archive/2010/03/18/windows-virtual-pc-now-without-the-need-for-hardware-virtualization.aspx

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• Override methods should call base method?

  - by Trevor Pilley

  I'm just running NDepend against some code that I have written and one of the warnings is Overrides of Method() should call base.Method(). The places this occurs are where I have a base class which has virtual properties and methods with default behaviour but which can be overridden by a class which inherits from the base class and doesn't call the overridden method. For example, in the base class I have a property defined like this: protected virtual char CloseQuote { get { return '"'; } } And then in an inheriting class which uses a different close quote: protected override char CloseQuote { get { return ']'; } } Not all classes which inherit from the base class use different quote characters hence my initial design. The alternatives I thought of were have get/set properties in the base class with the defaults set in the constructor: protected BaseClass() { this.CloseQuote = '"'; } protected char CloseQuote { get; set; } public InheritingClass() { this.CloseQuote = ']'; } Or make the base class require the values as constructor args: protected BaseClass(char closeQuote, ...) { this.CloseQuote = '"'; } protected char CloseQuote { get; private set; } public InheritingClass() base (closeQuote: ']', ...) { } Should I use virtual in a scenario where the base implementation may be replaced instead of extended or should I opt for one of the alternatives I thought of? If so, which would be preferable and why?

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• SQL SERVER Retrieve and Explore Database Backup without Restoring Database Idera virtual database

  I recently downloaded Ideras SQL virtual database, and tested it. There are a few things about this tool which caught my attention.My ScenarioIt is quite common in real life that sometimes observing or retrieving older data is necessary; however, it had changed as time passed by. The full database backup was 40 GB in size, [...]...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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• New Reference Configuration: Accelerate Deployment of Virtual Infrastructure

  - by monica.kumar

  Today, Oracle announced the availability of Oracle VM blade cluster reference configuration based on Sun servers, storage and Oracle VM software. Assembling and integrating software and hardware systems from different vendors can be a huge barrier to deploying virtualized infrastructures as it is often a complicated, time-consuming, risky and expensive process. Using this tested configuration can help reduce the time to configure and deploy a virtual infrastructure by up to 98% as compared to putting together multi-vendor configurations. Once ready, the infrastructure can be used to easily deploy enterprise applications in a matter of minutes to hours as opposed to days/weeks, by using Oracle VM Templates. Find out more: Press Release Business whitepaper Technical whitepaper

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• i get this error when trying to install virtual box

  - by Dave Cribbs

  Hi I am very new to Ubuntu and am not sure what I’m doing wrong.... I’m trying to install virtual box but when I do I get this dpkg: dependency problems prevent configuration of virtualbox-4.3: virtualbox-4.3 depends on psmisc. I’ve done apt-get -f install but it still says this. I don’t know what else to do please help. when I do sudo apt-get install psmisc I get this psmisc is already the newest version. You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: virtualbox-4.3:i386 : Depends: psmisc:i386 but it is not going to be installed Recommends: libsdl-ttf2.0-0:i386 but it is not going to be installed Recommends: dkms:i386 but it is not installable Recommends: linux-headers:i386 Recommends: gcc:i386 but it is not going to be installed Recommends: binutils:i386 but it is not going to be installed Recommends: pdf-viewer:i386 E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

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• How to configure virtual host to consider domain path in Apache

  - by Scholle

  Hi, the following virtual host definition is working for an arbitrary url starting with "http://1.2.3.4:80/*" <VirtualHost *:80> ServerName www.domain.com DocumentRoot /home/user/www/application/current/public <Directory /home/user/www/application/current/public> Order allow,deny Allow from all </Directory> </VirtualHost> How to rewrite this configuration so that it is applied only for url's starting with "http://1.2.3.4:80/user/*" I tried "ServerPath /user", but it doesn't work... Any ideas?

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• Static and Non Static Method Intercall in Java

  - by Vishal

  I am clearing my concepts on Java. My knowledge about Java is on far begineer side, so kindly bear with me. I am trying to understand static method and non static method intercalls. I know -- Static method can call another static method simply by its name within same class. Static method can call another non staic method of same class only after creating instance of the class. Non static method can call another static method of same class simply by way of classname.methodname - No sure if this correct ? My Question is about non static method call to another non staic method of same class. In class declaration, when we declare all methods, can we call another non static method of same class from a non static class ? Please explain with example. Thank you.

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• How can I change a virtual directory's physical path in IIS7 and C#?

  - by Nick

  I need to change the where a virtual directory's physical path is in C#. This is what I have so far: using (DirectoryEntry webSiteRoot = WmiUtility.GetWebSiteRootDirectory(webSite)) { DirectoryEntry virtualDirectory = WmiUtility.GetVirtualDirectoryByName(webSiteRoot, vDirName); string currentPath = virtualDirectory.Path; virtualDirectory.Path = "C:\somepath" srvMgr.CommitChanges(); It would appear that the VirtualDirectory.Path is not a physical one. Any help?

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• Virtual Brown Bag Recap: JB's New Gem, Patterns 101, Killing VS, CodeMav

  - by Brian Schroer

  At this week's Virtual Brown Bag meeting: JB showed off his new SpeakerRate Ruby gem Claudio alerted us to the Refactoring Manifesto We answered the question "How do I get started with Design Patterns?" Ever had to kill a frozen instance of Visual Studio? Yeah, I thought so. Claudio showed us how to do it with PowerShell. (It's faster) JB previewed his new CodeMav web site, which will be a social network for developers (integration with Speaker Rate, slide share, github, StackOverflow, etc.) For detailed notes, links, and the video recording, go to the VBB wiki page: https://sites.google.com/site/vbbwiki/main_page/2011-01-06

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• xampp virtual host in config file causes forbidden error...

  - by Ronedog

  Any idea why the following virtual host causes xampp to give me a "403 forbidden error"? <VirtualHost *:80> ServerName rst DocumentRoot "C:/xampp/htdocs/administrator/login.php" </VirtualHost> If I delete this code then xampp loads web pages just fine...but I don't want to have to type in the whole url...I want to just type in "rst" and go to my page. This is on a windows vista machine. Thanks for the help.

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