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  • Testifying that somaxconn change can make a difference

    - by petermolnar
    I got into an argument on the net.core.somaxconn parameter: I was told that it will not make any difference if we change the default 128. I believed this might be enough proof: "If the backlog argument is greater than the value in /proc/sys/net/core/somaxconn, then it is silently truncated to that value" http://linux.die.net/man/2/listen but it's not. So does anyone know a method to testify this with two machines, one running, for example MySQL or LVS and the other is hammering it in a GBit network? I'm opened to any solution, scripts are slightly more welcome.

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  • Disabling the shell of user "daemon" (/bin/false)

    - by BurninLeo
    on a Linux system there are lot's of users by default: daemon, bin, sys, games, etc. According to my /etc/passwd most of these users have a shell assigned (/bin/sh) which seems some kind of insecure to me. My naive thinking would say: Only give those users a shell that may login to the server. Is my thinking wrong? If not completely wrong: Can I disable the shell for "daemon" and "www-data" without having side effects (e.g. the system wont start or the Apache PHP cannot excute system calls)? Thanks for your hints!

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  • SEO consideration for duplicate sites

    - by Malk
    I am building a brochure-ware website for a company that sells products all across the world. They need the site to ask the user what region they are in before using the site; there are 5 regions. This is because there are different products offered to different regions and each region may or may not want to customize their own content. However, at launch and likely forever, most of the pages will be the exact same minus what is listed in the footer and in the product selection menu. My question is how should I structure the sitemap for this site for best SEO? Should I be concerned with duplicate content penalties and/or cannibalizing the site's presence on the SERP? Some considerations: The client wants to be able to print links directly to regional specific content bypassing any prompt for the user to select a region (to ensure they land on the target page). The client cannot have a 'default' region so the user must have a region specified "Clean" urls are important, but there is wiggle room The client does not want each region to have its own domain There will be a link on the page to allow users to specify a different region The client is not concerned with localization ...at this time Some products are available in multiple regions A quick list of options I am considering: www.site.com/region/page region.site.com/page www.site.com/page?region (no cookie, pages require the parameter. If visited without; the user must select a region) www.site.com/page (using cookie and a splash screen if needed; could pass parameter in to set the region for direct linking) Thanks in advance for your advice.

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  • How to stop any dialog windows from showing when inserting a USB drive in Windows?

    - by jasondavis
    1) I just found a really interesting program that allows me to use a USB drive as a windows login key. It is called Rohos Logon Key. IF I remobve my USB drive/key from the PC then I can have the PC lock or hibernate or any other option, I have been looking for such a solution for many years but never knew one existed until this and it works much better then I imagined. I do have a couple minor issues though (im using Windows 7 pro). When I remove and then re-insert my USB key, windows prompts me with this dialog here... Generally when I get this I just click on "Continue without scanning" however I am looking for a solution to just make it not even show this at all, is it possible to disable it from showing? 2) I also get this dialog as well when I insert USB drives/key... Would it be possible to not show this as well or have it pick an option by default or anything really?

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  • Monitor dectecs wrong display mode

    - by user292449
    I am running into an issue with 14.04. I have two monitors. the fist one is a 19 inch LG that runs off DVI at 1440x900. It seems to function just fine. The second is a 23 inch LG that should run at 1920x1200. It has been plugged in with both a HDMI to HDMI cable and a DVI to HDMI cable. It seems to be stuck in "I am displaying for a DVD player in 1080p mode" or some such. I had this issue with windows a long long time ago and eventually it just went away. I can set the screen display to 1920x1200 with the generic X drivers but I am a gamer and would like to use the Nvidia drivers since they deliver better performance. When I switch to the Nvidia driver I can set the resolution to 1920x1200 but the screen seems to be up and to the left with a black border down and to the right. If I switch back to the default X driver after this the screen remains stuck in the up and to the left mode. Any help would be wonderful.

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  • Unattended installation for windows 7 x86

    - by user448402
    Are there any pre-created Autounattend.xml files for Windows 7 unattended installation x86? I have been experimenting and creating the XML file but I am always being prompted to choose which hard disk to format. I can't seem to add in the script to automate that process. I tried adding the DiskConfiguration portion but the installation keeps giving me error that my diskID is incorrect. How do I resolve this issue? Is there any pre-created Autounattend.xml file that automates everything? I want it to work for VMware virtual machine. Currently, VMware creates its own default disk. So RT Seven Lite only works for normal computer and not VMware.

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  • Squid gives always tcp_miss reverse proxy

    - by JaakL
    I added installed latest squid3 in front of apache as reverse proxy. The problem is that it gives always tcp_miss, in fact I have not yet found a single TCP_HIT message in the log file, and most of the content is static. Relevant config values for cache_dir and refresh_pattern are default ones, directory /var/spool/squid3 exists and has some files/folders. I have 100+G free storage, but reconfigure gives warning "WARNING cache_mem is larger than total disk cache space!", which does not make any sense to me. I have googled a lot and seen with similar problems, but none of them has helped.

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  • Configure nagios to alert only when there are no mx servers available

    - by Aseques
    In my company there are two redundant MX servers, I would like to tell nagios to wake me in the night ONLY if both servers are down. The default behavior is to alert whenever one of the MX servers is down. I would like to set a timeperiod i.e. 23:00 to 06:00 when nagios only alerts me by sms in case both servers are down. I am using nagios3 but I couldn't find something like this in the docs. Solution: I've used this check_command in a service called MXservice: check_command check_service_cluster!"MXservice"!2!1!$SERVICESTATEID:mx1:SMTP$,$SERVICESTATEID:mx1:SMTP$ Thanks for all your help

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  • I tried installing Ubuntu 10.04 and I got this message - any ideas on what to do?

    - by vette982
    No root file system defined. Please correct this from the partition menu. This message shows up when I first boot into Ubuntu after the installation. I installed it by mounting the ISO with Daemon Tools, and I just did the default Wubi installation. I keep reading everywhere that I need to choose my installation directory, but I don't get any option to do that. These are all the options I get for installation directory. I have a C and D partition on my drive, and I tried installing it on both and no luck either way. Any ideas?

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  • How to makesure VM is in Para virtualization mode on XEN?

    - by ananthan
    I am having a server running XEN,with ubuntu 12.04 as Domain 0. Intel VT is turned on by default and i dont want to run any Windows OS as VM. So 1. how can i makesure that all the created VM will be in paravirtualized mode even with VT enabled? I have heard that in Full Virtualization hypervisor needs to work hard for emulating all the underlying hardware,which may reduce performance for too much i/o specific applications when compared to para mode. 2.Since i am running only Linux VMs do i really need to enable VT support? 3.Can i be able to run Linux VM in para mode with VT enabled? 4.Will simply turning on VT support changes virtualization from para to full virtualization?? 5.Will there be any performance improvement for VM running Linux OS if VT is enabled?

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  • Missing files when Windows 7 returns from hibernate w/ dual boot

    - by Arthur N
    I have a dual-boot setup with Ubuntu (lucid) and Windows 7. I have the Windows file system shared on Ubuntu through Samba. Occasionally, I am working on Windows and my machine will go into hibernate (i.e. when the battery level is critical). By default, my GRUB settings boot me into Ubuntu. So when I get back to my PC, sometimes I just hop into Ubuntu instead of going back to Windows. However, if I write any files to the Windows file system during that Ubuntu session, the next time I do go back to Windows (which resumes from hibernate), those files are missing. Obviously, the state of the actual file system and the hibernate snapshot become out of sync, and Windows chooses the hibernate snapshot, overriding any changes I may have made thru Ubuntu. For now, I've disabled the hibernate option in the Windows power settings, but is there any utility I can use to get back some of those missing files?

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  • Windows XP: How to boot up in normal mode after improper shut down?

    - by Nick
    I work in two different locations and whenever there is a power outage at one of the locations, Windows XP detects that the system was improperly shutdown. Once the power is up, the PC powers on and Windows XP enters REPAIR/SAFE mode where only someone physically in front of the PC can control it. (Networking is all disabled in this mode) Now before it enters REPAIR/SAFE mode, there is an option for a NORMAL boot. But the catch is that REPAIR/SAFE mode is selected by default with a 30 second timer. Once it automatically enters REPAIR/SAFE mode and if nobody is at the other location, I have no way to remote control it anymore. And then I have to drive over to the other location and reboot it and select boot into NORMAL mode. Where can I change this setting so that Windows XP always boots into NORMAL mode no matter how many times it is improperly shut down?

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  • How to ALWAYS link an image in MS Word 2010 instead of embedding it?

    - by grunwald2.0
    I want to only link, not embed, pictures in my Word document. Yet I got a lot of images to insert! And I want to spare me the additional click into the dropdown menu one and for all, so the question is, is there any way to set "link image(s)" as default? Because I didn't find anything in the Word settings, only totally useless detail settings. This "detail" has been overseen by Microsoft it seems! :( I would provide you with a screenshot, but it would be German anyways. I think the guys who use image linking in Word since v2007, will know what I mean. Thank you in advance! Best regards

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  • Does /boot safe on top of a lvm LV (logical volume)?

    - by fantoman
    Title already asked the question. More specifically, I read in some documents that logical volumes are nice in general but not for /boot in a linux system. They say that bootloaders don't understand LVM volumes, so create a separate partition for /boot out of lvm. I recently installed Ubuntu server (9.10) for my home server, but by default /boot is created in the LVM. Everything is fine now, but I am not sure it is safe to use /boot in LVM. Second question is do I really need a physical partition (volume)(pv) for /boot or is it equally fine if I put it into a logical volume (lv) on top of a single shared volume group. Thanks in advance.

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  • How can I change the font color of the VS2012 Source Control Explorer window?

    - by RM.
    I am using Visual Stuido 2012 Integrated Shell with Team Explorer. I would like to change the default font color of the mapped and not mapped folders in the Source Control Explorer (in the treeview). I tried the Visual Studio Color Theme editor, but it seems like the font color of the Source Control Explorer and the Team Explorer can not be changed by it. I also looked at Tools|Options|Environment|Fonts and Color for a setting but did not find anything. Is it possible to change the font color? How?

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  • I tried installing Ubuntu 10.04 and I got this message - any ideas on what to do?

    - by user41926
    No root file system defined. Please correct this from the partition menu. This message shows up when I first boot into Ubuntu after the installation. I installed it by mounting the ISO with Daemon Tools, and I just did the default Wubi installation. I keep reading everywhere that I need to choose my installation directory, but I don't get any option to do that. These are all the options I get for installation directory. I have a C and D partition on my drive, and I tried installing it on both and no luck either way. Any ideas?

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  • My sound is not working, so I'm going to reinstall FYI [closed]

    - by fer
    I've had trouble getting the sound to work in Ubuntu 12.04 I'm running an Acer Aspire 5739g laptop. This is using a clean install. This wasn't a problem when ubuntu first installed. Rather, it was when I ran the updates that it stopped working. I already tried the suggestions on the ubuntu sites and other similar queries, and they haven't fixed it. Something in the updates is making my sound not work. Edit: It turns out that this might be a bug (the sound issue, first paragraph). After reinstall, it happened again (it's not caused by updates at all, or any software, because I fixed it now w/o reinstall). It seems like I replicated it as follows: I changed auto-hide in the behavior tab of Appearance settings by turning it on, and setting the sensitivity to below the recommended setting. Then instead of restarting, I just logged out and back in. The sound stopped working again. I set the behavior settings to default, restarted, and now it's back to normal. Not sure if it's due to only logging out (and not restarting) or b/c I set my sensitivity to a low setting. Not sure if this helps anyone, but thought I'd mention it.

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  • How best to automatically deal with multiple site_ruby locations?

    - by cclark
    Is there a way to automatically append to $: variable in ruby to account for additional site_ruby locations? Ruby is installed in /usr/local/ and using gem_install will properly install the new ruby files in to /usr/local/lib/ruby/site_ruby. However there are some RPMs for ruby bindings to tools like shadow which we'd like to install and they install to /usr/lib/ruby/site_ruby (no local). Is there a standard way to tell ruby that this directory should also be included by default? I know scripts could dynamically update $: or they could be called with -I but it seems like this is something that should be handled in the install. Has anyone else found a clean way around this kind of problem? thanks, chuck

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  • Cookie Settings Storage Method

    - by Paul
    I've got an web app that needs to store some non-sensitive preferences for the user. Right now I'm storing their language preference and what mode they want a window opened in by default in two cookies: "lang" can be "en" or "de" "mode" can be "design" or "view" I might add a few more in the future. I'm not sure how many, but probably never more than a dozen. Language is parsed on every request, whereas the mode cookie is only used occasionally. I saw a recommendation that made sense I shouldn't try to do what I was originally planning to do and strongly type a user settings class deserialized on each request because of the overhead involved. I see three options here and I'm not sure which is the best overall. Keep things as they are, add a new cookie for each new setting Combine the cookies into a single settings cookie and add future values to it Change the mode cookie to settings (leaving language alone), add new user settings values to the settings cookie All would work obviously. I'm leaning toward option three, but I'm not sure if there's a best practice for this?

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  • Enable [command] key to register as something other than just [ctrl]?

    - by gojomo
    I'm running 10.04LTS inside VMWare Fusion on a Mac. The [command] key (aka [windows] on many keyboards) is almost always behaving as if it was [ctrl], even though I done anything explicit to request that behavior. In fact, in SystemPreferencesKeyboardLayoutsOptionsAlt/Win key behavior, 'default' is chosen (rather than the 'Control is mapped to Win keys' option). However, choosing other options there do not seem to change the handling of [command], at least not as tested in the SystemPreferenceKeyboard Shortcuts app. (No matter what I've tried, [command]-x is always detected as [Ctrl]-x in that app.) I've tried: various options under SystemPreferencesKeyboardLayoutsOptionsAlt/Win key behavior toggling the VMWare Fusion Preferences KKeyboard & Mouse Key Mappings setup which claims to map '[command]' to '[windows]', and restarting the VM in each position the xmodmap lines suggested at https://help.ubuntu.com/community/MappingWindowsKey And yet, it's clear that all Ubuntu apps aren't merging [ctrl] and [command], because in 'Terminal', [shift]-[ctrl]-c will Copy, but [shift]-[command]-c will not. If the [command]/[windows] key was recognized as anything else ('Super', 'Meta', 'Hyper'? I don't care as long as it's not 'Control'), then I could achieve my real goal (which happens to be enabling CMD-based cut/copy/paste in PyCharm, while leaving CTRL-X/etc available for emacs-like bindings). I think any solution which manages to make [command]-x appear as something other than [ctrl]-x in PreferencesKeyboard Shortcuts will probably do the trick.

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  • How can I automatically switch audio to my speakers when my TV-as-2nd-monitor is not in use?

    - by Michael McGowan
    I have a normal LCD monitor as my primary monitor and an HD LCD television as a 2nd monitor (connected through HDMI). I also have a set of normal speakers for the computer (a Windows 7 machine) that I previously used (before I was using the TV as a 2nd monitor). When I am using the TV as a 2nd monitor, I would like audio to come from it. However, I'm oftentimes using the TV as a TV, in which case I would like the audio from my computer to come from my speakers. Is there any way to accomplish this? It seems that if I have the TV set up as the default audio, then even if I turn the TV off (or, more likely, to the input from my cable box), then the audio still goes through that rather than my speakers. Is there a solution that does not require me to manually change the settings every time I want to switch contexts?

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  • Can't connect to server from certain machines

    - by Joel Coel
    On a small college campus we have a VLAN setup for the computer labs. These machines get assigned IP addresses in the 192.168.7.xxx range. In the server room, all of the server are on the default VLAN and assigned an IP address in the 10.1.1.xxx range. For the most part this works, but the lab machines are unable to connect to one of the servers. They can't even ping it. They can talk to other servers on the same switch as this server just fine. At first I thought it might be a vlan issue, but I changed the server port vlan to match other known-working ports with no effect. Any ideas?

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  • How can I re-program/flash a backup of the bios?

    - by user285705
    I have some computers that have a particular bios setting that keeps everything running smoothly. The setting is not the default setting for the motherboard. So, when the CMOS battery dies, the setting is erased and causes the user problems. How can I backup the bios and settings I have now, and flash that file onto my entire stock of computers? I have attempted to use awdflash to backup my bios and then attempt to write that backup to the ROM chip, but I keep getting an error. It tells me that my file number doesn't match the system, or something like that. Basically, the file is incompatible with the chip. But I just backed it up from that chip. If anyone can shed some light on this for me it would be helpful.

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  • Vmware Workstation 10 connect remote server (Debian, Guest-Windows XP) Does not allow raw disk access nor shared folders

    - by Alex
    The setup: Ubuntu with local Vmware Workstation 10 (everything works locally) Connects(File- Connect to Server) Debian server with the same Vmware Workstation 10 (Windows XP Guest) Debian setup does not allow raw disk access nor shared folders (most options does not exist) No shared folder No physical disk option I use root user for this machine. Default install. I've tried to add shared folder from command line - it does not work. How to enable shared folders or raw disk access? I have created new Windows 8 64 bit template from scratch - I cannot use physical HDD either, and no SharedFolder option. I think this is something about security policy of remote server.

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  • Does Google Chrome take over all other browsers no matter what?

    - by Jodi
    I can not use either IE or Firefox since I have downloaded Google Chrome. I don't even have Chrome set as my default anymore but it opens up anyway. I need to use IE in order to download updates for Windows Movie Maker and I can only download it using IE, thanks to good old Microsoft. And no where can I find a way to access IE on my computer. It is not shown in programs and no shortcut was created on my desktop in the download. Any suggestions? I got to get this video down and I am on a tight deadline. Thanks.

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