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  • Testifying rasing net.core.somaxconn 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. Does anyone know a method to testify this with two machines, sitting on a Gbit network? The best would be against MySQL, LVS, apache2 ( 2.2 ), memcached.

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  • How to set original error message for apache 2.2

    - by ffffff
    Apache 2.2 default 414 message is Request-URI Too Large The requested URL's length exceeds the capacity limit for this server. I wanna set custom message so I set http.conf ErrorDocument 414 /error/HTTP_REQUEST_URI_TOO_LARGE.html.var But I do not get along well How to set original error message for apache 2.2

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  • Is there a way to programatically set the printer properties in windows ?

    - by panzerschreck
    Hello, As a paper saving drive throughout the organization, we plan to set 2 page printing as default setting on all the windows machines. I would like to contribute to this by writing a small script that can do that for all the machines, maybe send an email to all the users, and let them run the batch file. Is that possible, can you please guide me. I have no knowledge about windows scripting, I program in java for my living. Thanks for your time.

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  • Dlink search is hijacking my browser

    - by James
    For months now "DLink search" has been hijacking my search engines. I use google chrome, and I have organized my search engines in the handy dandy "manage search engines" tool about a TRILLION times. It never even says D-link is hacking my search engines. It does not show up! I have read many posts on this forum and others saying that to fix this problem from internet explorer: Setup, internet options, yadayada, magical fairies, and you are solved, but my browser is google chrome! How am I supposed to do this from there! I do not know how to re-setup my Dlink router, which is the cause of the problem! HOW? In those posts with the magical fairies fixing it, HUNDREDS responded saying, "yep, those fairies definitely fixed it right. :)" These people were so satisfied. IT WORKED FOR THEM, WHY NOT ME. I look at it and go ":(" because it does not help me. There are no options for anything to do with this in GOOGLE chrome. PLEASE EXPLAIN and HELP. I see no "SETUP" option, no "Internet Options" button, no anything. BTW the exact posts are these: "Uncheck Advanced DNS in the router internet setup. This will take care of it. I had this problem with my DLink router before." "I had this issue with my DIR-655 and unchecking the Advanced DNS setting in Setup - Internet - Manual Internet Connection Setup fixed it." "If this is just internet explorer, you can go to Tools Internet Options or Internet Options in Control Panel. From here, go to the advanced tab and click the Reset button." "I would set the router's DNS to a site like OpenDNS, and I would ensure the machines are set to get their DNS settings via DHCP or set the machine's DNS setting to OpenDNS. If the router's DNS looks like it was messed with, some bad software know the default passwords for routers and could have changed it. If you don't already I would make sure the password to the router is not default or easy to guess. I've had spyware change a machine's DNS, but the fact it is happening on all machines makes me wonder if it is the router." "Something got into your router and changed the dns server most likely, do a hard reset of the router and then change the password to something strong. Also check for a firmware update for the router and apply it as soon as possible."

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  • Move Windows 8 onscreen keyboard?

    - by Vladimir Sinenko
    From the first look, it seems that the onscreen keyboard in Windows 8 cannot be moved from its default position at the bottom of the screen: However, sometimes it obstructs the input field and should be repositioned (see iOS 5's screenshots for examples) So the question is, can it actually move? If it can, how can I do that? If it cannot, is it possible to use the keyboard to fill an input field that is underneath it?

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  • Can I force my video card to work in a certain refresh rate?

    - by EFanZh
    I have a GeForce GT 640 video card, but by default the screen flickers badly. And if I change the refresh rate to 59 Hz in NVIDIA Control Panel manually, everything is OK. I don't know why. Now the problem is, if the system restarts, the refresh rate become 60Hz, then the screen flicker is flickering. I need to change the refresh rate again. Can I keep the refresh rate to 59 Hz? Or it would be better if the screen doesn't flicker at 60 Hz.

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  • Recompile PHP5.3 with mysqlnd on Debian Squeeze?

    - by TheRebel
    My current PHP5.3 installation was compiled with libmysql by default. To run certain mysqli functions, I need the mysqlnd library, but I can't seem to find a step by step guide giving proper description how to recompile PHP 5.3 on Debian 6 with custom settings. All I found was the configuration parameter on the PHP.net manual (http://php.net/manual/en/mysqlinfo.library.choosing.php) saying that this is a compile time decision: $ ./configure --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-mysql=mysqlnd Any ideas how to do it? Thanks!

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  • What configuration entries are changed through the graphical options interface?

    - by Shamaoke
    I use a localized version of Firefox whose options/preferences menu and about:config entries differ from the default English base distribution. When I'm discussing Firefox on international forums, it's hard to tell people what options I alter and what values I use, since the localized names are different. Is there an exhaustive list of the about:config entries that can be changed from the graphical preferences/options dialog; something I can use as a reference for translating my localized names?

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  • Pasted image hides behind text even when set to be inline

    - by John
    I copied an image from MSPaint and pasted it into a Word document I'm working on. For some reason the image hides behind the text even with the default "in line with text" setting. Trying other settings don't work as expected either. It does the same when I insert a picture from a file. Can anyone shed any light what would be causing this and how to fix it - I am guessing some formatting issue in the existing document?

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  • VM using a secondary graphic card

    - by Arthur
    Hi everyone, at the moment i have a dual monitor setup on my main PCIe gfx card. I know that on windows it is almost impossible to have a second card (eg no thrills PCI card) running without having an SLI motherboard because of a driver issue. Well this was my conclusion after many weeks of research. I was thinking...is it possible to use a VM in order to utilize the secondary card as the default video output to feed another monitor? let me know if you want me to clarify Thanks :)

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  • Disabling Linux mouse middle button

    - by syrenity
    Hi. In Linux by default the middle mouse button (i.e. wheel) copies the selected text into the place of cursor. This causes accidental pasting while I'm trying to scroll code / config files via the mouse - especially in Eclipse. Any idea how to disable it? Thanks.

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  • linux multipath routing load balance

    - by user52883
    I would like to know how to load balance two Business DLS links which have fixed IPs. I believe it would look something like this: ip route add default scope global \ nexthop via gatewayDLS1 dev interface1 weight 1 \ nexthop via gatewayDLS2 dev interface2 weight 1 Is this be all I need in order to get multipath routing? Please, give me a more detailed answer if possible, thanks you.

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  • What is the recommended firmware for TP-LINK TL-WR841ND?

    - by arscariosus
    What would be the best firmware for this cheap router? I know it depends on what I wanted to do with it, but I would like to hear some answers especially those who have used this before or is currently using it now. The default firmware is okay, but I have the itch to tweak so I flashed it with dd-wrt. I would like to hear some pros and cons regarding different firmwares and why it works best on this device.

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  • Fix static ip address problems in Ubuntu 10.04

    - by jane
    I used Network Manager in Ubuntu 10.04 to set a static ip address and assigned one that was already in use. Now my computer will not boot (nfs crashes). I booted from a live cd to change the configuration on the file system in /etc/network/interfaces but the file looks to be the default. Where does the network manager (the gui from system- preferences) store it's configuration so I can overwrite it and enter the correct ip addresss and have a happy working computer again. thanks!!

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  • Recreate/Regenerate vhost config in cpanel for one account

    - by Gabriel
    So my boss as allways was messing with cpanel on our production server (we only have production servers, which is bad enough)... so now all of the accounts is pointing to the default apache page in /usr/local/apache/htdocs instead of /home/useracc/public_html. Is there a way how to tell cpanel/WHM to recreate the vhost configuration of the account from scratch? the account has a database and emails associated with them so before i do anything i don't want to mess anything up with cpanel.

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  • Apache2 Worker Starting Tons of Processes

    - by karmic
    I am installed apache2-mpm-worker and left all config files default (I've never touched them much). Is it normal that when I restart apache there is at least 20 apache processes starting? Shouldn't it be just 2 like it says in the configuration? Also, my memory seems to grow very quickly until my machine crashes. I don't have any mods installed.

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  • Userscript to add website screenshot for each google search result?

    - by naxa
    Before the "preview pane" for google web search results came out from their labs, there already were userscripts to have a visual snapshot for each and every website in a web search query result. Now with the default preview, one needs to hover over the preview button for each site and gets a big (and slower) preview. The older, user-made solutions put the screenshot there for each result element. How could I achieve to get a screenshot statically for every item in the search result nowadays?

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  • How to direct outgoing traffic through specific interface?

    - by user1434058
    I added eth1 and eth2 to my Ubuntu Server, all 3 use DHCP and are on the same lan eth0 10.0.0.41 eth1 10.0.0.42 eth3 10.0.0.43 Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default router.net 0.0.0.0 UG 100 0 0 eth0 10.0.0.0 * 255.255.255.0 U 0 0 0 eth0 10.0.0.0 * 255.255.255.0 U 0 0 0 eth1 10.0.0.0 * 255.255.255.0 U 0 0 0 eth2 curl --interface eth1 www.google.com doesn't work what else do i need to do for the above to work?

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  • new PC not work with existing router, but works fine when directly connecting to cable modem

    - by user34786
    I bought a new desktop PC (eMachine ET1331G-03W from WalMart) with windows 7 installed, but I can not access internet by connecting to my existing wireless router(LinkSys BEFW11S4) with wired cable. Though all other existing desktops and laptops have no problem connecting to the same router. However, the new desktop PC works fine and able to connect to internet if I bypass the router and directly hook up with the cable modem. At new PC when connecting to the router, I got the below information by typing ipconfig, the IP address looks wrong to me: autoconfiguration IPv4 Address: 169.254.71.140 subnet mask: 255.255.0.0 default gateway: (empty) NetBIOS over Tcpip: Enabled Typing ipconfig at all other desktop and laptop have values like below, which are good to me: Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 192.168.1.140 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.1.1 The wireless router was on 192.168.1.1, I do not know why the new desktop got 169.254.71.140 IP? It should have something like 192.168.1.xxx, and it was configured to automatically get IP by DHCP. I have tried to switch cables,power off cable modem, router and reboot new pc many times and got no luck. So I believe this is only an issue related to router or new pc configuration. Can someone help me figure out the issue?

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  • postgresql login from remote

    - by Hellnar
    I want to give remote access to my postresql db (8.2) to computers that are at the same lan, at the default config I have added this line to pg_hba.conf where xxx.xx.xx.xx is the ip of the machine that hosts postgresql. This machine is a windows 2k server. # IPv4 local connections: host all all 0.0.0.0/0 password host all all xxx.xx.xx.xx/24 password There no firewall or such blocking the connection between and `listen_addresses = '*' for postgresql.conf .

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  • iptables: Allow only HTTP access for web browsing

    - by user1448260
    Have a linux box, want it locked down but just be able to surf internet on it. Why is this script blocking http too? #!/bin/sh # # iptables -F # #Set default policies for INPUT, FORWARD and OUTPUT chains # iptables -P INPUT DROP iptables -P FORWARD DROP iptables -P OUTPUT DROP # # Allow TCP connections on tcp port 80 # iptables -A INPUT -i eth0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o eth0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT # # Set access for localhost # iptables -A INPUT -i lo -j ACCEPT # # List rules # iptables -L -v

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  • How to determine JAVA_HOME on Debian/Ubuntu?

    - by Witek
    On Ubuntu it is possible to have multiple JVMs at the same time. The default one is selected with update-alternatives. But this does not set the JAVA_HOME environment variable, due to a debian policy. I am writing a launcher script (bash), which starts a java application. This java application needs the JAVA_HOME environment variable. So how to get the path of the JVM which is currently selected by update-alternatives?

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  • Network folder image thumbnails taking long time to load

    - by Steve
    Our internal network folder can take up to 5 seconds to generate a thumbnail for each photo in a network folder. Usually, only 10% of thumbnails actually display; the rest are default jpg icons. A thumbs.db file already exists inside this folder, so presumably the thumbnails have been generated before. Why do they have to be generated again? The PC is Win7 64-bit. The server is Windows 2003 Server SP2.

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