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• Dry length of buoy in OrcaFlex

  - by KAE

  I use a software package called OrcaFlex to model the behavior of a buoy in ocean waves. I would like to share OrcaFlex questions in this forum - hope some users are out there! Here is a starter question: For a 6D buoy, I extracted the 'Dry Length' after the simulation completed. The value of the Dry Length sometimes slightly exceeds the actual height of the buoy, even though this would not seem to be possible given the formula from the manual, Dry Length = (cylinder length) × (cylinder volume above surface) / (cylinder total volume). Any insights?

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• Window 2008 server shared not accessible if Firewall is on

  - by Mirage

  I have folder to be shared on window server 2008. If i disable all firewalls then MAC can see the folder If i enable firewall then MAC can't connect to my folder WHich rule i have to apply in firewall setting to make that share work

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• VPN connection over apache mod_proxy

  - by This is it

  Hi We have several virtual machines which are connected in a private virtual network connection. Internet access for these machines is provided via dedicated virtual machine which has apache proxy server on it (they all use this machine as proxy). The problem now is that from several machines we need to connect to external VPN Server, but it seems that VPN connections don't work over apache proxy. Any suggestions on how to enable VPN connection over apache proxy (or some other proxy)? Some other solution? Thanks

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• SSH & SFTP: Should I assign one port to each user to facilitate bandwidth monitoring?

  - by BertS

  There is no easy way to track real-time per-user bandwidth usage for SSH and SFTP. I think assigning one port to each user may help. Idea of implementation Use case Bob, with UID 1001, shall connect on port 31001. Alice, with UID 1002, shall connect on port 31002. John, with UID 1003, shall connect on port 31003. (I do not want to lauch several sshd instances as proposed in question 247291.) 1. Setup for SFTP: In /etc/ssh/sshd_config: Port 31001 Port 31002 Port 31003 Subsystem sftp /usr/bin/sftp-wrapper.sh The file sftp-wrapper.sh starts the sftp server only if the port is the correct one: #!/bin/sh mandatory_port=3`id -u` current_port=`echo $SSH_CONNECTION | awk '{print $4}'` if [ $mandatory_port -eq $current_port ] then exec /usr/lib/openssh/sftp-server fi 2. Additional setup for SSH: A few lines in /etc/profile prevents the user from connecting on the wrong port: if [ -n "$SSH_CONNECTION" ] then mandatory_port=3`id -u` current_port=`echo $SSH_CONNECTION | awk '{print $4}'` if [ $mandatory_port -ne $current_port ] then echo "Please connect on port $mandatory_port." exit 1 fi fi Benefits Now it should be easy to monitor per-user bandwidth usage. A Rrdtool-based application could produce charts like this: I know this won't be a perfect calculation of the bandwidth usage: for example, if somebody launches a bruteforce attack on port 31001, there will be a lot of traffic on this port although not from Bob. But this is not a problem to me: I do not need an exact computation of per-user bandwidth usage, but an indicator that is approximately correct in standard situations. Questions Is the idea of assigning one port for each user is a good one? Is the proposed setup an reliable one? If I have to open dozens of ports for many users, should I expect a performance drawback? Do you know a rrdtool-based application which could make the chart above?

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• what do I need to run python on my webserver ?

  - by Patrick

  what do I need to run python on my webserver ? Should I enable some Apache module ? Thanks

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• Hyper-V Server Management from Windows 8.1

  - by David Mackintosh

  Is there a way to manage a Hyper-V cluster that runs on a Windows Server 2008 R2 Datacenter from a Windows 8.1 Pro workstation? I've downloaded and installed the Remote Server Admin Tools for 8.1 (http://www.microsoft.com/en-us/download/details.aspx?id=39296), but when I enable the Hyper-V manager, it tells me that I can't manage Hyper-V servers on 2K8 or 2K8R2. Related, the Failover Cluster Manager barfs with a similar error. How do I manage my old servers with my new workstation?

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• Binding backward-kill-word to Ctrl+w

  - by nocturnal

  I'm trying to switch from prolonged use of Tcsh to recent exploration of Bash. I've managed to port over all my favorite features, except for Ctrl+w which treats spaces and slashes as word boundaries, most likely backward-kill-word. In Bash however readline deletes all the way to the first space, deleting all slashes between. I've tried many various combinations of \C-w: backward-kill-word in both .inputrc and .bashrc using bind but I can't get it to work the way I want. Funny enough, through Putty from Windows at work I can use Alt+Backspace, which also the manual says is the default binding, to produce the exact behavior I want. But in Terminal.app on my Macs at home this does not work. Same goes for any FreeBSD or Linux server I happen to be logged into from Terminal.app. So I turn to superuser for help.

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• Aligning Numbered Bullet Points in Word 2007

  - by Frustratedwithbullets

  Hello, I am putting together a very large business manual which incorportaes numbered heading, steps to follow, diagrams, etc. When using the bullet points, they align perfectly as I work through the processes. However when I include a diagram, or something different from the "norm" of text, the alignment changes. I would like all the bullets points to be aligned in the whole document regardless of where they appear in the document. Is there a way to save the settings so that the bullets always appear in the same position? Currently I am having to reset the indents by dragging the tabs on the ruler. This will be a large document, so I don't want to manually adjust the numbered bullets every time. Help would be greatly appreciated. Thanks very much.

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• Batch file to open multiple cmd prompts

  - by JHarris

  I am trying to write a batch file that will automate the following manual process: Open a new cmd prompt (prompt1) Run a bat file (b1) Run a program (that will continue to run) Minimize prompt1 Open a new cmd prompt (prompt2) Run a bat file (b1) Run a different program (that will continue to run) Minimize prompt2 I've found ways to open multiple instances of cmd to run different things, but after I've run the first thing (b1), I then need to run a program in that same cmd window. I currently have start /min cmd /k C:\Users\db2admin\python_environment\Scripts\activate.bat start /min cmd /k C:\Users\db2admin\python_environment\Scripts\activate.bat This opens the two windows and runs the bat, great, but now I need to execute another command (running a python file) in each of the cmd windows. How do I send commands to each prompt?

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• Tool or website or process to display previews of website templates residing in archive files?

  - by Tony_Henrich

  I have hundreds of website templates in rar or zip files. To view any of them I have to extract the archive to a temporary folder and then view the template in there. It's a time consuming manual process to do this for each template Is there a tool which enables me to quickly preview the templates in the files? OR (if I extract each template into a separate folder off a master folder) A web app which can enable previewing of each template by automatically creating a link or a preview image (similar to template sites) of the home page for? OR any method to preview the templates in the fastest convenient way possible?

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• Apache will not start with mod_wsgi enabled

  - by Rox45

  I'm trying to run Apache with mod_wsgi to run Python scripts. The server is running Ubuntu 12.04 with Zend Server installed, but when I enable the wsgi module Apache will not start. I get an error message of "apache2: apr_sockaddr_info_get() failed" in the error log. I installed the module using the Debian package. I can't seem to find this specific problem anywhere so maybe it's a problem with Zend Server? I'm stumped. Thanks

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• Confused with creating an ODBC connection, apparently I have two separate odbcad32.exe files?

  - by Hoser

  Alright, this is my first time working with this so forgive me if I'm a little confusing or vague. I have a server with Windows Server 2008 Standard without Hyper-v (6.0, Build 6002). I'm running a small website off this server and using a Microsoft Access database to store some information coming in through the website. I'm sure the PHP I have written to open the ODBC connection is correct as it has worked for me when I created this website in a testing environment on a laptop. My current issue now is that it seems like I have two different odbcad32.exe's, and one doesn't appear to have a driver for a .accdb file, and only a .mdb file. The other has a driver for both. The first one I speak of has a driver titled 'Driver do Microsoft Access (.mdb)', the second one has a driver titled 'Microsoft Access Driver (.mdb, .accdb)'. I access the first odbcad32.exe by going to C:\Windows\SysWOW64\odbcad32.exe, and then the one that seems to have the driver I need I go to Control Panel-Administrative Tools-Data Sources(ODBC) and simply create a new connection in the System DNS tab. Whenever I make changes to the one that I access through the Control Panel, I see no changes, however if I use the odbcad32.exe file in SysWOW64 I do get some changes in the errors that come back to me. The main difference I noticed is that when I set up an ODBC connection with the Control Panel method it said it simply couldn't find the ODBC connection, but when I made a .mdb connection in the SysWOW64 one (and pointed it to a .accdb file) it says Cannot open database '(unknown)'. It may not be a database that your application recognizes, or the file may be corrupt. Which makes it seem like it is this odbcad32.exe version in SySWOW64 that is being recognized as the 'correct' one. Is there any way to fix this? I've tried to be as thorough as possible but if I've been confusing or left anything out let me know.

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• Outlook 2010 calendar entries categorized but not colored in Exchange environment

  - by isaacgrover

  In a small three-user environment running Outlook 2007 on Exchange 2010, all users previously just used one user's calendar as their main calendar. New employee #4 has been set up with his own calendar per the owner's request, they use colored categories for their calendar events, and his categorized activities are not showing up as colored on the other users' Outlook calendars - only his own. What settings should I look at to enable the correct color coding again?

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• Enabling Squid delay pool eats up the entire memory

  - by Supratik

  I am using "squid-3.1.8-1.el5" in my CentOS 5 32 bit system. In normal condition Squid uses 85m - 90m, but when I enable the delay pool parameters the memory usage suddenly rise up 2GB. The memory keeps on increasing until the system is out of resource. The following are my delay pool settings: delay_pools 1 delay_class 1 1 delay_access 1 allow all delay_parameters 1 192000/192000 Is there anything I am missing here or is it a bug with Squid ?

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• Moving windows on Windows like on Gnome (Alt+DnD)?

  - by Alois Mahdal

  Is there a hidden setting or an external utility that would enable moving windows on Windows like on GNOME? I'm particularly thinking of moving windows using Alt + Drag and drop (which can be changed to Win + drag and drop). I have machine with Windows (7) and two big monitors at work, and I tend to use multiple smaller windows. Moving them quickly around is essential, so I'm always missing this GNOME feature.

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• Switch to switch encryption over a wireless bridge (TrustSec?)

  - by metatheorem

  I am planning to connect an existing Cisco 3750 switch to a 3560C switch over a wireless PTP bridge. The bridge will be WPA2 protected, but I am looking for an additional measure of security between the switches to prevent other wireless access through either switch. They do not support IPSec, only 802.1Q tunnels, and buying additional hardware is not likely an option. I am looking into using TrustSec manual mode between the switches. After some effort reading into TrustSec and MACsec, I am mostly certain this is a good choice over the wireless bridge, keeping in mind it is a shared medium. Two questions: Can I reliably prevent other wireless traffic from accessing the switches using TrustSec? Does anyone know of any better options with the 3000 series switches?

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• How do I find all text with particular background color?

  - by Dave M G

  I have a LibreOffice Writer document that has undergone a process of editing, and sections of the text that needed to be rewritten were highlighted in yellow. As I fixed those sections, I removed the yellow highlight. Now, I want to make sure there are no remaining areas of highlighted text that have not been fixed or possibly the highlight was not removed. It's many hundreds of pages, so a manual scan is unfeasible. Also, it might be that one space or one character got accidentally left highlighted, and I want to ensure I've accounted for them all. How can I search the document to find all instances where text has been highlighted?

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• Why is my Sent folder empty in Outlook on Windows Mobile?

  - by raelshark

  I'm using Outlook on Windows Mobile 6.1 connected to an Exchange server. Even if I check the Sent folder in my synchronization options, the folder always shows up as having no messages. Even emails that I've sent FROM my phone do not show up, leaving me with no way to view those. Anything else I can check or enable to see these messages?

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• How to retry connections with wget?

  - by Andrei

  I have a very unstable internet connection, and sometimes have to download files as large as 200 MB. The problem is that the speed frequently drops and sits at --, -K/s and the process remains alive. I thought just to send some KILL signals to the process, but as I read in the wget manual about signals it doesn't help. How can I force wget to reinitialize itself and pick the download up where it left off after the connection drops and comes back up again? I would like to leave wget running, and when I come back, I want to see it downloading, and not waiting with speed --,-K/s.

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• Resolve local subdomain on apache for paths within user dir

  - by MaoPU

  On Apache 2.2.x I've activated mod_userdir. I used the default setup, so that http://localhost/~name/ will be connect with ~name/public_html/ and a path within public_html, e.g. ~name/public_html/mySite can be reached through http://localhost/~name/mySite. How can I achieve, that the same path can be reached through http://mySite.name.localhost/? I don't want a manual approach like it is suggested in other SF questions (such as http://serverfault.com/q/133921/53624), but rather want an automatic mapping of all available paths to the corresponding URL. I think, several steps will need to be taken: Change mod_userdir configuration, so that the subdomain of localhost will be connected with all available user names on the machine. The second step would maybe include the usage of mod_rewrite, so that the subsubdomain could be matched to the path within ~name/public_html... What would be your prefered way?

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• Emacs can't find my installed modules

  - by XVirtusX

  I run Perl/Tk or WWW::Mechanize just fine using terminal but when I try to invoke the interpreter through Emacs shell (M-!), it dies with a message: Can't locate tk.pm in @INC (@INC contains: /etc/perl /usr/local/lib/perl/5.12.4 /usr/local/share/perl/5.12.4 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.12 /usr/share/perl/5.12 /usr/local/lib/site_perl .) at perl-tk.pl line 2. Obviously, this array @INC doesn't hold the path to my modules, the question is, how can I do that? I didn't find anything on emacs manual. I also googled it but to no avail.

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• Is it useful check data integrity in one DAT tape?

  - by maxim

  I backup my data every day on tape using one drive DAT HP Storageworks DAT 160. I use one tape for every day and I turn them weekly. Every monday I check one tape randomly recover some files saved on it. I know that when data is saved on tape, the driver and backup software check data integrity, but I wonder if a manual check of some data saved has a sense or not. I re-use these tapes many times and I would be sure data are safe.

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• Application for Auto-Scaling backgrounds in Windows XP

  - by jweede

  One thing that's always annoyed me about windows XP is how there's no "scale" option for the desktop background. It either has to be stretched or centered. It's a pretty simple algorithm to scale the image so that one of the dimensions (usually height) fits on the screen. Does anyone know of a good program that does this, or is there a way to enable it?

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• How to share datastores between multiple exchange servers?

  - by Johan

  I have an Exchange 2003 box that is seriously overstressed. I want to transfer its duties to a new and faster box. I don't cannot suffer downtime, so I have to do this stuff live. Here's what I plan to do: Install Exchange 2003 on the new server Set up the new server, so it will accept requests from users for their mailboxes I want to do as little manual set up as possible, because that 'll eat up my time and is too error prone Than I want to transfer my datastores one by one to the new server and have those users (once the datastore in the new server is up and running) to get their data from the new server (without them noticing) I don't have to transfer all the datastores, some of them need to stay on the old box (because I'm still waiting for extra HD space to arrive from the supplier) What steps do I need to follow to do this? The new box has never seen this domain before, the old exchange server is not the DC, we have a dedicated DC.

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• How to create issue dependencies/links in Jira (3.13) ?

  - by zarko.susnjar

  Hi, We recently switched from other bug tracking software to Jira (3.13 currently ). We need to set issue linking in a manner that my task start time depends on other colleague's issue and I can not start until he resolves his issue... I goolged and found that this kind of thing is integrated in newer versions :/ Maybe we need some plugin, make some custom field, enable something in administration part... Any help would be appreciated... (please retag/add jira and bug-tracking tags or whatever)

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