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• Driver choice for addressing ubuntu wireless card issues

  - by Holly

  Hello, this should be a relatively simple question. I'm attempting to get my windows wireless card to work with ubuntu, booted from my portable hard drive. This is the guide I'm attempting to follow is on help.ubuntu.com, /community/WifiDocs/Driver/Ndiswrapper My wireless card is a Broadcom Corporation BCM4318 AirForce One 54g 802.11g Wireless LAN Controller. My computer is an HP Pavilion Entertainment dv5 notebook, which came with Vista 64. I would like confirmation about which of the drivers I should use. At this point, I'm leaning towards Broadcom BCM4318 HP Pavilion zv6000, but I thought it best to ask advice before taking action. The drivers I have to chose from are listed on this page http://sourceforge.net/apps/mediawiki/ndiswrapper/index.php?title=Category:Broadcom Thanks! Holly

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• Using PowerShell, in Active Direcotry, how would I change all the DNS A records that have a given IP to a new IP?

  - by djsumdog

  We've been moving data centers and I have a lot of old records that were not correctly but in DNS as CNAME records, but A records that have a direct IP (e.g. 192.168.100.n) and they're all moving to a new subnet (10.19.100.n). I just need to write a powershell script to change all those records. I found this site: http://www.indented.co.uk/index.php/2008/12/30/administering-microsoft-dns-in-powershell/ and from it I made this simple script: $dnsServer = "meldc2" $scope = New-Object Management.ManagementScope("\\$dnsServer\root\MicrosoftDNS") $path = New-Object Management.ManagementPath("MicrosoftDNS_Zone") $options = New-Object Management.ObjectGetOptions($Null,[System.TimeSpan]::MaxValue, $True) $ZoneClass= New-Object Management.ManagementClass($scope,$path,$options) $Zones = Get-WMIObject -Computer $dnsServer -Namespace "root\MicrosoftDNS" -Class "MicrosoftDNS_Zone" $Zones | Get-Member foreach($Z in $Zones) { $Z | Select-Object Name,DsIntegrated,ZoneType,Reverse,Data } but that only gets me a listing of root zones. I don't understand how to iterate over all the entries in each of the zones. Also, all the examples I've seen involve adding new zones, but there aren't any examples I can find on modifying existing A records.

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• Does Dynamic DNS require separate subdomains?

  - by kce

  Hello. I have a functioning DHCP/DNS (ISC Bind 9.6, DHCP 3.1.1) server running on Debian that I would like to add DynamicDNS functionality to. I have a pretty simple question: Does DynamicDNS require (or recommend) separate sub-domains? I have seen a few tutorials where the the clients that are acquiring their IP addresses and other networking information via DHCP are on a different sub-domain as the servers which are statically configured (both in terms of IP, and DNS). For example: All the clients are on ws.example.org and the servers on example.org. Right now all of our servers and clients are in the same domain (example.org) but spread across different zone files (because we have multiple subnets). The clients are configured with DHCP and the servers are configured statically. If I want to setup DynamicDNS for the clients should I use a separate sub-domain? What's the best practice here (and why or why not would it be a bad idea to do otherwise)? Thanks.

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• hardware for pushing buttons

  - by Elazar Leibovich

  Many times I want my computer to interface old hardware. Such as radio, light switch, etc. This mostly involves pushing pressing and moving various buttons and switches. I don't want to buy new hardware I want my computer to interface the old hardware I already have. I thought about it and reached to the conclusion that what I need is a general purpose button-pusher hardware. I need a simple device I can interface by a computer and would be able to push most of the buttons we have in daily accessories, without damaging the button. Is there any such accessory availible?

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• FTP v/s SFTP v/s FTPS

  - by susmits

  We're setting up a web server at our workspace. In conjunction, we're planning to install an FTP server, however I'm stuck at what protocol to employ -- FTP, SFTP or FTPS. I googled around, trying to see what protocol offers what, coming across articles like this, but I can't make up my mind. Only simple, once-in-a-while file transfer is desired; however, security is a concern since the file server is intended to be accessible from the internet. What protocol is the most apt for my use, and why?

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• Max ping response time?

  - by DougN

  I'm wondering what a maximum (practical) ping response time might be. As far as I know, there isn't a max defined anywhere (TTL, but that's hops, not time). As I think about it, I'm not sure I've ever seen a ping response time of more than a second or so. But as far as I know, there is nothing to stop a remote host from waiting (or being really busy) and not sending the response back for a few seconds. As a simple data point, I just pinged a number of servers around the world and the worst time I could find was 350ms.

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• Perform shell operation through secure shell

  - by Ben

  Is it possible to perform a shell operation from a bash script through a secure shell. Here is an example of why you may want to do this. Lets say you have a simple unix operating system that you need only build and run on, but you want to do all of the development on another machine. I want to write a bash script that has the following functionality: scp file to location on other machine ssh to other machine cd into correct directory make run program scp results to file on original computer exit ssh Is this remotely possible? (Pardon the Pun :p)

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• Windows Update cannot currently check for updates, because the service is not running

  - by Lee

  This morning I attempted to run Windows Update on two of my Windows 7 PCs (both are virtual machines), and I ran into this interesting pop-up error message. I have never encountered this problem before, so I was somewhat perplexed. From the message, my first thought was to see if the Windows Update service was running. It was. As usual, the solution is never so simple. I attempted to restart the service and reboot the PCs to no avail. So, I am off to the interwebs for a solution. I did find a solution to the problem, so I thought to post it for my future reference and for anyone else who may encounter this problem. I will be posting the answer shortly. If you have alternate solutions that have worked for you, please feel free to leave a post or comment.

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• Move flag for follow of a specific color to a folder in Outlook 2003

  - by Campo

  I have a user request to be able to create a rule that would move an email in outlook 2003 that the user flagged for follow up to a specific folder. That seemed simple enough till he requested that depending on the flag color they were to be moved to a specific folder. Issue is that in outlook 2003 that's not an option when creating a rule. I know that this is very straight forward in outlook 2007 and 2010 and using the categories feature is very convenient as it displays as a list when you right click.... Though in 2003 categories are not so convenient. as an example the user will flag for follow up as so... Red Flag for sales Blue Flag for requests Green Flag for personal They want a rule that will move all items with a red flag to the sales folder, Green flag to the requests folder and so on.... Thank you for your suggestions.

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• How can private IPV4 addresses get past iptables NAT (tcp RST,FIN)

  - by gscott

  I've got a router performing simple NAT translation using iptables iptables -t nat -o -j MASQUERADE This works fine almost all of the time except for one particular case where some TCP RST and FIN packets are leaving the router un-NAT'd. In this scenario I setup 1 or 2 client computers streaming Flash video (eg www.nasa.gov/ntv) At the router I then tear down and re-establish the public interface (which is a modem) As expected the Flash streams stall out. After the connection is re-established and I try to refresh the Flash pages, I see some TCP RST and [FIN,ACK] packets leaving the public interface (I assume as Flash attempts to recover its stream). I don't know how these packets can leave the router non-NAT'd

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• I'm receiving an SSL error in various browsers, but I can't find non-SSL content

  - by Scott Vercuski

  I'm receiving an error with my SSL connection. Using google chrome I see the following error: Your connection is encrypted with 128-bit encryption ... however this page includes other resources which are not secure I've scoured the source code, scripts and rendered code in the browser but cannot find where an http:// call is made. I've also used Fiddler2 to examine the traffic and everything is coming across via HTTPS. Has anyone run into this issue before and if so how did you go about finding the culprit. The website is running ASP.NET MVC3 in C#. The page in question is a simple payment page. The only external call is the google analytics tracking code. The page appears to load correctly, all images and scripts are in place.

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• DokuWiki Segmentation Fault On Radius Auth

  - by mrduclaw

  I'm running x64 Ubuntu 12.04. I did a simple apt-get install dokuwiki to install DokuWiki. And I'm trying to follow the directions located here: http://www.dokuwiki.org/auth:radius to get Radius authentication working. Things seemed to install OK. Under Configuration Manager I selected Authentication backend to be "Radius" and filled in the Radius details at the bottom. Now, however, whenever I try to log into the Wiki, my browser gives me the following error: No data received I checked /var/log/apache2/error.log and see this: [Tue Jul 10 22:22:14 2012] [notice] child pid 5270 exit signal Segmentation fault (11) I'm fairly sure the Radius server is setup correctly as it correctly authenticates with my squid proxy and other stuff on the network. But this is about the extent of my Linux troubleshooting skills. Can anyone suggest steps for me to follow to help track down what's causing apache2 to segfault short of attaching with gdb and issuing a set follow-fork-mode? I'm also open to just hearing suggestions for simila

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• diskpart on RDM's ...

  - by karnash

  HI, We have ESXi cluster which is attached to clariion CX4 We have windows 2008 R2 as the guest OS. Attahed to this vm is 2 x 1.95T RDM's I select disk 1 create partition primary size=1 (1MB) then list partition Partition ### Type Size Offset * Partition 1 Primary 1024 KB 1024 KB Then I do the same for the other disk and offset is 1024KB I need to present 4T disk to this vm so I right click on disk 1 convert to simple volume then extend it by adding the second disk now when I do list partition, I see the off set is set to 31k. Can anyone please guide me. Thanks

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• Boot linux off hard drive and then switch to run from usb flash disk

  - by Jesse

  I have an older laptop that I want to use as a simple media server on my home network. I would like to avoid using the internal hard drive except for booting (BIOS does NOT support booting from USB). My thought was to mirror the hard drive (currently has current install of Arch Linux) onto the flash drive and then after booting switch over to run everything from the flash drive. I read the following article about using a RAM disk (HOW-TO: Boot OS into RAM for speed and silence) but ran into problem because the USB subsystem does not seem to be initialized soon enough (I create root and home paritions on the flash disk and modified fstab to pick those - didn't work). Any thoughts?

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• Mapping a Piped Shell Command in Vim

  - by michaelmichael

  In a previous question I asked about mapping evaluated code to a new window in MacVim. I got a great solution, but it presented another question: How can I map a key command in my .vimrc that involves piping output in the shell? As a simple example, let's say I wanted to pipe the results of ls -a to a new MacVim window. From the Vim command line I can enter !ls -a | mvim -, and the results will appear in a new window. Great! Now, I add that to my .vimrc: nmap <Leader>r :w !ls | mvim<CR> Vim now throws an error every time I try to source my .vimrc, which reads as follows: E492: Not an editor command: mvim<CR> Any ideas on how to overcome this?

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• persistant data in tor browser bundle?

  - by Snesticle

  What sort of persistent data is generated by bundled Tor? I recently did an experiment using the Tor Browser Bundle for GNU-Linux. I created two directories, A and B, and placed an identical copy of Tor in each one. Next I placed a simple python script in directory A that both launched the vidalia package and, when exiting the network, deleted the entire contents of A with the exception of itself and rebuilt the bundle from the original archive. What surprises me is that after about ten hours of browsing each, A and B now show a distinct difference in startup time. Also curious is that I get a message in the log of B that never shows up in A: new control connection open which is a notice level advisory. This has nothing to do with what I was originally testing but now I'm interested in what exactly is going on. By the way I do not have to rely on Tor for my personal safety as many are forced to do so even if you just have a hunch I'd be interested in hearing it.

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• What is a good alternative to Camtasia Studio (screen recording not required)?

  - by tnorthcutt

  I'm looking for a good alternative to Camtasia Studio - really just the video editing part. My current workflow looks like this: Record audio (with Audacity) Save screenshots of the subject matter (websites) Import audio and screenshots into Camtasia Use the zoom and callout tools in Camtasia to go along with the spoken audio and highlight certain parts of the sites Given that Camtasia costs $300 (I've been using a trial version), I'd like to find something else that can do this well. I suspect that a lot of the pricetag for Camtasia is because of the screencasting features. I've tried Sony Vegas Movie Studio, but it was really a lot more than I need. I'd like something relatively simple (so that new users can pick it up relatively quickly), with the zoom and callout functionality that Camtasia has. Any suggestions? Edit for clarity: I'm looking for a program that will let me combine the screenshots and audio, and (most importantly) that has features equal to or better than Camtasia for text overlays, highlighting areas on the screen, etc.

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• How best to backup 6x Win2k3 Servers

  - by saille

  We have a external HP LTO3 tape drive. It needs to backup 6 Windows 2003 machines every night. Servers are HP DL380 G3 and the tape drive is attached locally to one of them via SCSI. On a budget of $0, and a goal of keeping-it-simple, what is going to be the best way to backup these machines? What software to use? NT Backup? Or does HP have something better for free? We don't need image backups - file system + system state will be adequate. Do we need to copy the files to be backed up onto the machine with the tape drive attached? Edit: Let me ask a more focussed question: Would you use NT Backup or something else? No soap boxing please, we've after some quick advice from someone who's used a similar setup.

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• Getting live traffic/visitor analytics when using a reverse proxy

  - by jotto

  I'm in process of implementing Varnish as a reverse proxy for a Ruby on Rails app and I'm using Google Analytics (JS/client side script to record visitor data) but it's several hours delayed so its useless for knowing what's going on now. I need at a glance live data that includes referring traffic and what current req/sec is. Right now I am using a simple Rack middleware application to do the live stats (gist.github.com/235745) but if the majority of traffic hits Varnish, Rack will never be hit so this won't work. The closest solution I've found so far is http://www.reinvigorate.net/ but it's in beta (there are also no implementation details on their front page). Does Varnish have traffic logs that I can custom format to match my Apache logs so I can combine them, or will I have to roll my own JS implementation like GA that shows the data in real time?

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• Very slow disk performance on Dell PowerEdge 2950 w/ PERC 6/i running RAID 10

  - by vocoder

  I recently set up a server running Ubuntu 10.04 LTS on a Dell PowerEdge 2950 server - it has 6 500 gb 7200RPM SATA drives setup in a RAID 10 config. I am seeing extremely poor disk performance - the RAID array reports all disks are normal and using MegaCLI, it looks like the BBU is fine. hdparm -tT /dev/sda reports: Timing cached reads: 90 MB in 2.05 seconds = 43.96 MB/sec Timing buffered disk reads: 24 MB in 3.11 seconds = 7.72 MB/sec So as you can see, it takes forever to something as simple as an apt-get upgrade and even logging into the server. How do I go about troubleshooting what is causing this? I upgraded the firmware on the PERC 6i RAID controller to the latest, but didn't see any improvements.

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• JkWorkersFile: Can't find the workers file specified

  - by Vasan

  I am trying to set up a simple horizonatal Tomcat clustering in windows XP. Have created a workers.properties file in conf/ directory next to httpd.conf file. However, when trying to start apache using httpd.exe, I am getting the below error. JkWorkersFile: Can't find the workers file specified httpd.conf has below entry: LoadModule jk_module modules/mod_jk.so JkLogFile "logs/mod_jk.log" JkLogLevel error JkMount /TestProject loadbalancer JkMount /TestProject/* loadbalancer JkWorkersFile conf/workers.properties I tried specifying the absoluate path as well i.e. JkWorkersFile "C:/Program Files/Apache Software Foundation/Apache2.2/conf/workers.properties" But still ended up with the same problem. Below are the entries from workers.properties workers.tomcat_home=$TOMCAT_HOME workers.java_home=$JAVA_HOME ps=/ worker.list=tomcatA,tomcatB,tomcatC,loadbalancer worker.tomcatA.port=8109 worker.tomcatA.host=localhost worker.tomcatA.type=ajp13 worker.tomcatA.lbfactor=1 worker.tomcatB.port=8209 worker.tomcatB.host=localhost worker.tomcatB.type=ajp13 worker.tomcatB.lbfactor=1 worker.tomcatC.port=8309 worker.tomcatC.host=localhost worker.tomcatC.type=ajp13 worker.tomcatC.lbfactor=1 worker.loadbalancer.type=lb worker.loadbalancer.balanced_workers=tomcatA,tomcatB,tomcatC worker.loadbalancer.sticky_session=1 Can anyone help me to resolve this please ?

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• Is it possible to mount a TrueCrypt volume to a NTFS mount point?

  - by Anthony

  The question is simple really. Under Linux etc.. you can mount TrueCrypt volumes, files or partitions, to any mount point of your choosing whereas in Windows the interface only shows drive letters. I'm wondering if I can mount the volume, a partition in this case, un-encrypted to a NTFS mount point, or folder, instead of using drive letters. The reason I ask is I am running out of letters :(. I'm using Server 2008 with the latest TrueCrypt install. Note: I know how to mount a volume directly to an NTFS folder mount point but doing so, and navigating to the mount point, prompts a notice saying the volume is not formatted - to be expected as the volume is not un-encrypted at this stage.

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• runas without asking for a password

  - by Gregory MOUSSAT

  On a Windows server which is in a domain, I have a script I run from scheduled tasks. I want this script to be run under a mydomain\peter user account. It is simple to do it with scheduled tasks, if you know Peter's password. And once done, the script stops when Peter decides to (or has to) change his password. On Linux, a cron job can be run with whatever user account without having to know the corresponding password. And root can run anything on behalf on another user (with su and sudo). Any way to do this with Windows? My need is for a old Windows 2003 server, but I can manage to run it from another computer.

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• resize image without image quality reduction

  - by ali

  In web design , it's usually needed to design an image for example in Photoshop and then use multiple sizes of it. but I don't understand something here : When I resize the image (PNG or JPG) and reduce the dimensions of that in Photoshop , the image quality extremely gets reduced and the edges become messy while resizing the image in a simple software like Microsoft Paint gives a really better output! So what's the reason ? Is there a trick in Photoshop for image resizing which I've missed? Thanks for your help. UPDATE: I resize in this way : image image size , then enter new dimensions , all of checkboxes are checked , and have tried all of resample modes including Bicubic sharper

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• How to merge (and not replace) folders when copying, on mac?

  - by Cawas

  There's a similar question about windows. This is the same, but for mac. If I try to copy or move a folder to somewhere it already exists, it asks to replace it. That would result in deleting the target. Rather I want to merge. There's already a aquataskforce request about this, and it's a discussion going for a lont time if it's even something that should exist on Mac, due to its whole philosophy. Discussions at apple are outdated and didn't help much as well. As usual, there are professional solutions for doing this, such as Changes and Araxis. And there is the rsync or command line alternatives. But I want a free and simple solution, something like how it is done in Windows or Linux. I won't be doing it much anyway. By the way, PathFinder don't have such option as well and FolderMerge doesn't work on Snow Leopard as far as my 1 test went.

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