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• Clients can make maximum only 15 connections to ubuntu custom server

  - by gtan

  I have a custom server in C# being run on Ubuntu 9 under mono. I can make up to 15 silverlight clients connect to the server. When I make the 16th, it just waits. And if I close one of the established connections, the 16th client is able to connect. I am making the connections from one machine. I am also not exceeding any file handle limit. The limit is 1024 and I am having around 300. Any ideas how to make more connections? Also why the number 15? Is it something linux-specific? EDIT: I have run the same server on an Ubuntu 11.10 virtual machine and was able to make more than 15 connections. I presume it's a configuration problem on the Ubuntu 9 machine then. Any help on that?

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• First Linux - Ubuntu - should I change anything right away?

  - by Cyrcle

  I'm going to be getting a new system next week. I'm finally going to take the leap and run Linux as the native OS on it. Seems like a standard install of Ubuntu is the way to go for a newbie. I'm planning on 10.04 LTS. Is there anything that I should change right away that will cause me problems down the road? I'll be using this system for web development, mainly programming PHP. I'll be using my old laptop for testing with IE and Safari, at least until I either use Wine or VirtualBox to run them on the new machine. I think I'm going to force myself to learn Vim while I'm at it.

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• Setting up VPS hosting

  - by RobinFTW

  I'm trying to set up my own vps hosting. It wont be a paid service, just an experiment for me and some nerdy friends. What I'd like to be able to do is this: Run multiple virtual servers on 1 external IP. These servers can run anything from Minecraft servers to simple http servers. They will also need to be accessible thru SSH. What I don't get is how I can address these servers using domain names. I've done some research and found out that I could use Vhosts with Apache. However this only applies to http servers. It was also suggested I'd use a reverse proxy(squid) but this also only applies to http requests. I could just use different ports for different servers, but thats not ideal and not what I want. Can someone suggest a setup? Maybe some tutorials or anything.

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• Connecting client to JBoss cluster

  - by Nivek

  I am new to JBoss. Basically I have managed to cluster 2 nodes with: Node 1: run.bat -c all -g DefaultPartition –u 230.0.0.4 -b 10.67.51.28 -Djboss.messaging.ServerPeerID=1 Node 2: run.bat -c all -g DefaultPartition –u 230.0.0.4 -b 10.67.50.21 -Djboss.messaging.ServerPeerID=2 I know that if i cofigure a Apache load balancing(Mod_JK) to sit infront of the cluster, the client simply just punch in the IP of the Apache, and Apache will redirect the traffic to the nodes. But I do not want to have a Apache infront of the cluster. So how do my client access the cluster?? Do i need to configure something in JBoss, or isit a MUST to have a load balancer for the client to access the cluster?? MANY thanks in advance....

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• Running IE7 on WIN 7

  - by Skiff

  I need to run IE7 onw my WIN7 machine due to applications that currently do not support IE8. /sw

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• Latexmk on OS X

  - by Barum Rho

  Does anyone use latexmk on OS X with either Preview or another PDF, dvi, or PS reader? I've recently switched from Linux and installed MacTex to use Latex. I am used to using Vim to edit the source file and having latex -pvc running so that it will update the preview on xdvi upon save. I am aware that I can run xdvi using XQuartz, but I have it setup to run fullscreen, so it is not very useful when I don't want to go into X11 mode altogether. The problem with using Preview is that it will only update from the PDF file when Preview receives focus. I could not figure out if there is a command to trigger Preview to reload the PDF file.

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• SSH - SFTP/SCP only + additional command running in background

  - by Chris

  there are many solutions described to get ur SSH-connection forced to only run SFTP by modifying the sshd_config by adding a new group match and give that new group a Forcecommand internal-sftp Well that works great but i would love to have a little more feature. My servers automatically ban IP's which try to connect often in a short time. So when you use any SFTP-Client, which opens multiple connections to work faster it can get banned instandly by the server for a long time. The servers have a script to whitelist users by administrator. I've modified this script to whitelist the user, which runs the script. All i need to do is now get the server to execute that script, when somebody logins. On SSH it's no problem, just put it in .bashrc or something like, but the Forcecommand don't runs these scripts on login. Is there any way to run such a shellscript before or at the same time as the Forcecommand get fired?

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• How to set up apache with parallel plesk?

  - by Ran Gualberto

  I'm working with the Windows Server 2008 (a godaddy Windows dedicated server). My problem is that .htaccess is not working in the server. And I just figured out that apache is not installed. I would like to know how to run the apache with the plesk (with existing php setup). And how to run the apache with the current site directory C:\inetpub\vhosts. My goal is to make .htaccess work on the server with plesk and with the directory C:\inetpub\vhosts.

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• How can Windows 7 be set to sleep at 8pm and wake at 8am every day?

  - by Brett Alton

  I'm trying to figure out how to get Windows 7 to sleep at 8pm and wake at 8am on a daily basis. I'm looking at Windows' services and there is a Shutdown.exe that can run, but it only seems to have a /h flag for hibernation. For waking from sleep, there is a "wake Windows from sleep to run this task" option, but it never seems to work. There is also a Sleep.exe program I can download but it comes with 13MB of other libraries from Microsoft. Is there a C# program I can write to make this work?

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• Can I get 4 screens running on an ATI Radeon HD 5700 series video card?

  - by Wayne

  I have successfully run 3 displays using the 5700, but i want to run a 4th screen off the HDMI Port. Mainly I would like it to Mirror the primary monitor onto the TV connected to the HDMI Port. Any help at all would be greatly appreciated. I can get a signal to it, i just have to disable one of my original 3 monitors. Im not willing to do that. So other than disabling one of my monitors, does anyone have any suggestions?

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• How to disable password change for openldap user?

  - by Keve

  Considering possible solutions for some improvements I run into this theoretical question and I couldn't find a satisfying answer. Some of you may have first-hand experience with this in practice, so here the question goes: How can I disable password changing for an OpenLDAP user? The account must stay enabled, allowed to log on to workstations and work as usual, but should not be able to change its own password. Can this be done? If so, how difficult is it to implement it? All suggestions are appreciated! For reference: Servers and workstations are to run a mixture of FreeBSD and OpenBSD. Accounts to get password disabled are student or generic workstation accounts. Environment is a school.

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• Disable auto-update in Notepad++

  - by Keyslinger

  Is it possible to configure Notepad++ to stop checking for new versions each time it is run?

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• How to write more than one line in a launcher

  - by seraex

  How can I run three commands in a launcher? My commands are cd /home/seraex/MyDoc rm MyDoc.tgz tar cfz MyDoc.tgz * which will go to my documents folder and delete old backup and make a new backup. At the moment I make a text file and then make a launcher and point it to the file, but I want to delete the file and make the launcher run the commands directly. I'm using ubuntu 10.10 ' ubuntu site says 'Unfortunately launchers do not have access to the Bash environment so you cannot just include the multi commands' when i ggole chaining in launchers. thanks, admin may delete the question '

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• Mac terminal: Resource temporarily unavailable

  - by user167108

  I'm getting an error message in the Mac Terminal when I try to run several different processes. I did some googling and looking on this site, and found out that it might be related to having too many processes running at one time. However, I'm getting these error messages when I only have a few windows open (much fewer than I was accustomed to having). Looking in activity Monitor, my %User number is at around 25%, and the %System number is around 15%. In the past, I have had both much much higher (until the people at the Apple store told me to keep an eye on it). So with these numbers lower now, what explains the Resource temporarily unavailable error message? heroku (cloud hosting) console -bash: fork: Resource temporarily unavailable -bash-3.2$ upon opening new window in the terminal sh: fork: Resource temporarily unavailable sh: fork: Resource temporarily unavailable trying to run -bash: fork: Resource temporarily unavailable

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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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• Firefox and internet explorer not reponding, but chrome works fine.

  - by Mick

  I have been using multiple browsers successfully for years, but now I seem to have run in to a problem. When I run firefox or IE, they appear to start up, but the mouse pointer just permanently turns into an eggtimer, and I can do nothing else with them. Task manager shows them as "not responding". I then have to use task manager to "end task". I tried re-installing firefox, but that made no difference. Google chrome works fine. Any ideas what could be happening?

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• VLC stream with trickplay

  - by marjasin

  The idea is to start a video stream from one computer and watch it on another with the ability to start/stop the stream. I think I could do this with VLC but i haven't been able to figure out how. I've tried the following: (From the official forum) Stream with RTSP and RTP: on the server, run: % vlc -vvv input_stream --sout '#rtp{dst=192.168.0.12,port=1234,sdp=rtsp://server.example.org:8080/test.sdp}' on the client(s), run: % vlc rtsp://server.example.org:8080/test.sdp But this doesn't give me the ability to start/stop the stream from the client. According to the VLC release note something called "Trick play" was added in version 1.0. This seems to be what I'm looking for but i can't find any documentation that descibes how to use it.

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• File type actions for ruby scripts

  - by Kovags

  Hello, I just installed the Ruby interpreter and created the file test.rb. In the Folder Options, I created the rb file type and an action called Run and assigned the application C:\Ruby192\bin\ruby.exe "%1"" So It's possible for to get into the Windows XP command line and run the script simply by doing this: C:\>test.rb But when I need to send parameters to the script, I can't simply do the following: C:test.rb parameter1 parameter2 I'll have to do the following instead: C:\Ruby192\bin\ruby.exe c:\test.rb parameter1 parameter2 I just noticed that I'm able to edit the action the following way to pass more parameters: C:\Ruby192\bin\ruby.exe "%1" "%2" "%3"" That allows me to give 2 parameters to the script, but for some cases I need to pass a handful of parameters and it doesn't seem right for me to append "%5" "%6" "%7" ad nauseam. What's the canonical way to do it?

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• Checking that tasks are executed

  - by homer5439

  I'm not sure how to explain this. Once one starts having dozens or hundres of servers, each running some sort of periodic jobs (mostly from cron), there is a problem of making sure (or as sure as possible) that these tasks are actually ran. I mean, I get an email if a job fails fails, and no mail if it succeeds, but also no mail if it doesn't run for whatever reason. Sure, I could change them and have them send a "successfully ran" email, only to be flooded by mails that most of the time I don't want to see. Basically, I want to be notified only if: a task ran and failed a task didn't run at the expected time. Is there a way to do this?

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• Cleaning cruft from the stored configs database

  - by Zoredache

  I have setup stored configuration primarily as a method to manage my ssh known_hosts. Unfortunately as I retire hosts the old configs still exist in my database. The answer seems to be run the command puppet node clean <hostname>. The problem is that while this does command does run, and does clean up some data, it doesn't seem to clean up everything. For example I can still find values in the puppet_tags table that only applied to a hosts that no longer exists. What should I be doing to keep my stored configuration database clean of all extra junk that seems to be building up? P.S. Can anyone point me any documentation for the stored configuration schema?  If I could find good documentation, or at least an entity-relationship-diagram, I would be tempted to just do some manual clean-up.

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• Where can I get a Linux distro iso based on a 2.4 kernel?

  - by Mike

  I need to get my hands on an ISO file for a Linux distribution with a 2.4 kernel. I'm looking for an ISO specifically so I can use it with my Oracle VirtualBox. Since 2.4 is so old these days, I'll explain that I'm looking for it because my company uses an ancient 2.4 uClinux distro on our ancient hardware in our devices. I'd like to run some "desktop" tests using the same kernel version as what's in the hardware. As far as I can tell I can't run uCLinux on a desktop, so next best thing, I'd like to get anything running 2.4.

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• Kernel compiling with -j2+ parameter ends prematurely with no error message or output bzImage

  - by Minix

  I've noticed quite a while ago that compiling a kernel with the parameter -j set to 1 or more doesn't produce a bzImage. Instead, it ends prematurely without any advice. I have reproduced the same behavior in both my netbook and home server. As far as I'm aware, the point where the compilation stops is random - Compiling twice with the same parameters will probably stop at different files. However, when I run make with no -j* parameter the compilation ends just fine and outputs a working bzImage. Both machines run Intel Atom (N270 on the netbook and 330 on the server) and I've compiled for these processors. If I recall correctly, I've tried compiling both with Atom and with generic x86_64 options. The kernel version I'm building is 2.6.34.1 I've always compiled normally with those options in my Core2Duo and Pentium Dual Core machines. Has anyone experienced this issue? Any ideas why does this happens? Is there a fix or workaround?

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• How to create an rpm without a build step

  - by infra.user

  I'm trying to create an rpm of some code which doesn't need to be built. It will just need to run a script when it's installed on the destination system (i.e. I just need the %install portion of the spec file). I've left both %build and %configure sections of my rpm spec file empty, yet rpmbuild continues to try and execute ./configure with a bunch of parameters. Does anyone know how I can have rpmbuild create the rpm without trying to run ./configure? Thanks.

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• need help setting up a VPN for remote computer connection

  - by Chowdan

  I am on a low budget right now. I am currently in the process of starting a computer company. I am in need of a VPN network so I can run Dameware tools for working on customers/partners computers remotely. I will be working with Windows and some Apple and linux machines. I have desktop with an AMD Phenom II 965BE(currently running stable at 3.8Ghz) processor with 8 GB of ram and a radeon hd 6870(i know graphics aren't too useful) and about 1.5TB of HDD space. I am attempting to create a network out of my office based all on one machine that would also be secure for me to remotely connect to my partners computers so when they have issues I would be able to connect and do the diagnosing and repairs remotely. What types of servers besides a VPN server would i need to create this? I have access to all Microsoft products so I can run Windows Server 2012, Windows Server 2008 R2, or any other Microsoft Software. thanks for the help all

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• Forbidden - 403 error Apache

  - by philippe

  I was setting my local Apache server to run Python cgi, then I came with the following error: Forbidden You don't have permission to access /hw10/main.cgi on this server. What I've changed on my http config file was: ScriptAlias /cgi-bin/ "/var/www/cgi-bin/" <Directory "/var/www/cgi-bin"> AllowOverride None Options FollowSymLinks +ExecCGI Order allow,deny Allow from all Require all granted </Directory> AddHandler cgi-script .cgi .py May someone please help me with that? I was trying to configure my Apache server to run .cgi Python scripts, and I came across that.

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