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• Playing/extracting audio file from PDF

  - by ravl1084

  I use Ubuntu and I have a PDF file that contains an audio annotation. It won't play on Okular, it treats it as a text annotation. Following an old blog post where the poster created a small C script to extract the audio didn't work either, I suspect the format of these audio annotations has changed. Using the information on it I managed to uncompress the PDF and with vim, I found the audio data in the file. I tried copying this into its own file and changed the extension from mp3, wav, mid, but none of them would play. Is there a way of achieving this?

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• Question regarding IPv6 - Solicited-Node Address with a Link local scope

  - by Pulse

  Situation: A small LAN comprising a Windows 7 Ultimate x54 PC, 2 XP Pro x86 PCs and an Asus router.The Win 7 box has IPv6 enabled. There are no other IPv6 enabled devices on the LAN. In my firewall I see numerous requests originating from the Win 7 PC, which are for the Multicast address ff02::1:ff.... which is a Solicited-Node address query and has a scope of 2 which equates to the local link. As far as I knew local link addresses are filtered by routers, hence local link. Given that situation I'm wondering why I'm seeing these queries being generated to various addresses? Any ideas? Thanks.

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• Private VOIP network

  - by SuppositoryPlacebo

  I own a small private security services business. Some of my clients require 2-10 security officers per location. I'm trying to think outside the box in order to solve my communications problem. I'd rather not buy or lease hf radios or voip systems at the current rates. I'm wondering if there is an existing system, or if is at all possible, to setup a private communications network using only a server and bluetooth devices or a wifi/bluethooth combination. http://25.media.tumblr.com/tumblr_m44f0pn7BL1rwp6tgo1_1280.png I don't need "radio" per se. I just need a simple, private voip network. Is there an existing device that consists of nothing more than a wifi adapter to control a bluetooth device?

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• Update a DNS to a for a dynamic IP

  - by zobgib

  I want to use my schools connection as a place to host a small webserver but one problem I have run into is anytime my server reboots I am given a new IP inside the schools range. All of the schools IP are public and therefor I can access my computer directly over WAN just via the IP given in ifconfig. I would like to be able to give my computer a dns which is easy enough when I change the Arecords to match the current IP of my computer. The problem is if my computer ever reboots (my school regularly cycles power at night and over holidays) I am assigned a new IP and have to realize it then update the Arecords This is inconvenient and I figure there must be a better way to keep the DNS records updated either via a script or my own BIND server. That way if there is a power cycle I can still access the server via a Domain Name. If you have any direction to point me in it would be much appreciated. I am running Ubuntu 10.04 if that helps :).

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• Hardware for Capturing Packets

  - by Kevin

  One of my clients is a small school district in Texas. Like any school, they often have problems with network'd peripherals such as printers, et al. It would be nice to be able to simply "listen" to what the printer and PC are saying to each other (or not saying more importantly)... The problem is that I can't find old-style "hubs" anymore, and even if I could, it's not a long-term solution. All of the devices that I have found to replicate the purpose of a simple hub are either $100+ or are difficult to throw into a networking tool kit (aka my backpack)... Now that hubs are dead, what's the new low-cost standard for simple packet capture in the networking world?

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• Setting up virtual network in VMware workstation

  - by Saif Bechan

  I am playing around with VMware workstation and am trying to set up a small virtual network. I am having a little trouble with this I hope somebody can help me out. I want to have all the different virtual machines to have different internal IP adresses so I can ping them SSH etc, from within my windows machine. I am directly connected to the internet without a router, so using a bridged connection does not seem to work. The other options NAT and host-only do not seem to work also. I think i need to create a new adapter. I am testing this out with a virtual image of linux debain 5.0 lenny. I have WMware Workstation 7 with virtual network editor. Can anyone guide me in the right direction.

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• App to watch installer and roll back host later?

  - by OverTheRainbow

  I'm looking for a Windows application that can watch everything an install programs does to Windows, and can roll it back to what it was like before installing an application. InCtrl5 is useful to know what an installer did, but doesn't provide a way to return the host to its previous state. I'd like to avoid having to restore a host using eg. CloneZilla just for a small application. The goal is to make it fast to test an application in a test lab. Does someone know of an application that can do this? Edit: I wasn't specific enough: I need a way to totally remove an application but keep all other changes I made after installing the application. Edit: After checking a few of them, I settled on Cleanse Uninstaller, which was capable of removing the whole of an application, although it doesn't watch when it's installed.

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• How can I run my program on a large number of computers? [closed]

  - by zenpoy

  I'm looking for a (preferably free) service for running an executable I wrote? It's not malicious, it's not a virus, it's not scam, and if this is really important I can upload the python source code instead. I wrote a small crawler to gather information regarding the style of web pages for my MA project, and I need a lot more data. EDIT Here is more information on my problem and how I approach on solving it, and where I'm stuck. As part of my research I'm trying to classify text based on it's style (font-family for now), my data is based web pages, so I wrote a client/server application - the client is a crawler that gathers this data and send it to the server. The problem is that like 99% of the internet is Arial, Verdana and Helvetica - other fonts are far more rare, so I need to spend very long time to gather enough data regarding these fonts. Hope this explains it.

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• not able to upload files into mediawiki -- weird one

  - by Michael

  Completely frustrating me. When I try and upload a small jpeg file I get the following error: Warning: wfMkdirParents: failed to mkdir "/usr/local/mediawiki-1.20.5/images/5/5d" mode 0777 in /usr/local/mediawiki-1.20.5/includes/GlobalFunctions.php on line 2546 CentOS 6.4 MediaWiki 1.20.5 PHP 5.5.0RC1 (apache2handler) MySQL 5.5.31 php.ini safe_mode = off; file_uploads = On max_file_uploads = 20 localsettings.php $wgEnableUploads = true; $wgUseImageMagick = true; $wgImageMagickConvertCommand = "/usr/bin/convert"; images folder chown apache:apache images/ chmod 755 -R images/ (threw error) chmod 777 -R images/ (threw error) I've restart apache and still cannot upload. I'm stumped. Any ideas?

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• VM's, virtual networks and my home network.

  - by Jason Taylor

  I want to create a small lab of VM's to test out networking with. I have two PC's running VMWare and I need the VM's on these two PC's to be connected to their own LAN. I am planning on bridging the VM's into my home network. My home network and PC's are in the 192.168.0.0 range, but I want my VM's to be in 10.1.0.0. If I do it this way (Bridging the VM's on both hosts into the network) will the VM's be able to communicate? Will my home router freak out seeing two different subnets? Is there another, easier way to connect the virtual lan's on two vmware workstations together?

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• kvm process has too large a memory footprint on host

  - by gucki

  I'm using latest ubuntu quantal and start a kvm guest which should have 2048 MB of memory. Now after a few hours I can see that the kvm process of this guest is around 2700 MB, so 700 MB more than the guest should be able to consume. I mean a small overhead like 1% would be ok, but not 30%?! root 8631 74.0 22.2 4767484 2752336 ? Sl Nov07 512:58 kvm -cpu kvm64 -smp sockets=1,cores=2 -cpu kvm64 -m 2048 -device virtio-blk-pci,drive=drive-virtio0,id=virtio0,bus=pci.0,addr=0xa,bootindex=100 -drive file=rbd:data/vm-disk-1,if=none,id=drive-virtio0,cache=writeback,aio=native -device virtio-net-pci,netdev=net0,bus=pci.0,addr=0x12,id=net0,mac=02:7a:86:e6:1a:6c,bootindex=200 -netdev type=tap,id=net0,vhost=on -usbdevice tablet -nodefaults -enable-kvm -daemonize -boot menu=on -vga cirrus root 8694 0.0 0.0 0 0 ? S Nov07 0:00 [kvm-pit/8631] How is this possible and how to prevent it?

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• Suitable companion monitors for HP LP3065 30" primary monitor

  - by Bittercoder

  I have an HP LP3065 30" monitor - now I want to add a couple of companion screens to either side of it - I've heard to people suggesting 21" monitors in portrait mode - but it seems difficult to find a suitable panel these day, as 22" wide-screen monitors have become common, and I can't seem to find anything with a suitable 1600 pixel width. Can anyone recommend a suitable monitor, and suggest what criteria are best for picking a suitable monitor - what's important to consider - I'm thinking things like: Exact resolution match? Viewing angle? Small/thin bezel?

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• How to switch easily between a 5.1 headset and 2.1 speakers ?

  - by Wookai

  I have a 5.1 headset that I mostly use for gaming and watching movies. It is connected using 3 jacks to the rear panel of my motherboard (plus one for the microphone). I also have some small 2.1 speakers that I sometimes use to listen to music or to share a video/movie with someone. For now, what I do is crawl under my desk, and switch the cables. As my motherboard has 7.1 capabilities, I am wondering if there could be a way of having all 4 jack cables always plugged in, and switching on which device to output the sound programmatically. Has anybody had a similar problem, and how did you solve it ?

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• Performance Bottleneck with Photoshop CS3 on XPSP3

  - by Doozer1979

  I have an intel core 2 4400, with 4GB of ram running on XP 32-BIT SP3. Photoshop CS3 becomes sluggish & unresponsive even after loading up small files, and this is with only Bridge open as well, plus McAffee AV. My photos are loaded in from a USB 2 external drive, and my c: drive is used only for programs and windows itself. Even with 4GB of RAM, i am seeing the pagefile increase to 1.6GB, whilst there appears to be 1.5GB of RAM free to use. I've defragged the drive, with defraggler, and after that the only file reported to be fragmented was the pagefile itself. Anyone have any ideas what i can do to improve/solve this?

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• Upgrade manually-installed msi by assigning software through gpo

  - by Mr Happy

  In the past I rolled out software by manually installing it on a "golden" workstation, creating an (ghost)image from that and rolling that out to the other workstations. I try not to do that any more for simple/small software, and when possible (if it's an .msi) I assign the software through gpo. I'm having a problem with one of those. The software was manually installed on the image, which was rolled out, and now I have an update for that software (new msi) and I'd like to assign it through gpo. Don't know if it's relevant but it's user assigned. The new version gets installed alongside with the old version (this is possible since the program folder is different between those versions). When I install the same msi by hand, it properly removes/upgrades the old version though. Is what I am trying to do possible?

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• How to configure something like "Reflexive ACL" on OpenBSD?

  - by Earlz

  My U-Verse modem has something called "Reflexive ACL" described as Reflexive ACL: When IPv6 is enabled, you can enable Reflexive Access Control Lists to deny inbound IPv6 traffic unless this traffic results from returning outgoing packets (except as configured through firewall rules). This seems like a pretty good way to keep from having to maintain a firewall on each computer behind my router that gets handed an IPv6 address. It sounds about like a NAT, which for my small home network is all I want right now. Now my modem sucks as a router though, so I'm in the process of configuring an OpenBSD router to do that. I've got IPv6 supported and all that and my OpenBSD router will hand out IPv6 addresses by rtadvd. Now I want to keep people from having instant access to my local network through IPv6. How would I best do something like Reflexive ACL with pf in OpenBSD 5.0?

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• How to allow simple file sharing on Windows Server 2008R2 through VPN

  - by Martin Wiboe

  We are a small, distributed company with a Windows Server 2008R2 installation. I would like to set up a way for our employees to connect securely to this server via VPN and then be able to map a network drive. I have gotten this to work somewhat by installing the Network Policy and Access Services Role on the server and using the default settings. I have also created a network share on the server. The problem is that our connectivity is sporadic (sometimes the service stops listening on the port or simply refuses to authorize correct credentials) and slow. I can always connect through VPN, but mapping is problematic. I would be grateful for the answer on how to accomplish this as well as some guidance on whether I am on the right track. Thanks in advance!

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• Win 2008 Server configuration

  - by user123790

  Let me preface my question by saying I'm a novice in regards to server configuration. It's been 12+ years since I've attempted this. What we (our small office) are trying to achieve is to setup a Win 2008 server (located in a home) in a home network configuration (basic wireless router w/DHCP) that we (the office) can VPN to from our office. I have installed the software, installed DHCP, removed DHCP from the router, set the scope for 100 IPs and am now looking for information as to where I go from here? I believe I need to configure DNS and possibly set up static routes on the router for the home devices that need internet? The wireless clients are not receiving IPs is the current issue that I'd like to tackle. Also, would it be feasible to use the router's DHCP to assign IPs rather than having the server do it? If so, what would be the most direct way to accomplish this? I appreciate any help in this matter. Thanks

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• How do I remove Windows Update uninstall files on Windows Server 2008?

  - by Robert Koritnik

  I'm running Windows Server 2008 Standard running in VMware. It has 2 disks: system disk: 16 GB data disk: 500 MB I installed Visual Studio 2008 SP1 + MSDN and some small tools and libraries that don't take much space. Over time the system disk's free space has been going down (I suspect because of regular system updates - NetFx (.NET), service packs, and regular updates). Questions 1 How do you remove Windows Update uninstall files from Windows Server 2008? Question 2 I also found lots of files in C:/Windows/Installer folder. Is it possible to determine which .msp file goes with which patch? I would like to delete some of them, because they do take a lot of space.

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• Audio switch with multiple 3.5mm input & outputs

  - by David Nguyen

  I've been searching for a device that simple allows me to pick one input and one output from multiple input/outputs. I thought this would be a called a switch but I can only find ones with one input. Is there such a device that can do this? I will be attaching various devices, i.e. multiple console sound, PC & Laptop inputs and outputting to my speakers or headphones. I'm looking for something small and simple. All inputs and outputs are 3.5mm.

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• When HDD wakes up?

  - by NumberFour

  Im looking for some small script or application which could log the time when a non-system disk wakes up. I cannot identify which application or script wakes up my non-system drive (which has to be asleep until I work with it). I have already set the noatime flag, tried to use powertop and iotop to determine which application could prevent it from going to sleep - but with no result. So my plan is to set this drive asleep (hdparm -Y) and see at what time it gets regularly woken up. Thanks for any advice.

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• How can I unobstrusively backup a few client's email?

  - by tladuke

  This is a small office. Our web/email server is a shared host. In the office we have a windows 2008 box up all the time that runs our NAS and a couple other services. I don't have access to the ISP admin stuff, but I assume it has cpanel or something like that. I can get access if I ask. I want to get email backed up from the server to our NAS without the users having to do anything. I suppose I could set up Outlook on that server with everyone's account, but that's a terrible idea, maybe (would sent mail. The boss uses outlook, but we have Apple Mail and Thunderbird clients too. I guess the important thing is that outlook look at the backups, so boss is happy. Then again, maybe it should be stored in whatever is the most portable format (that will work on NTFS) This is for about 10 users.

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• DNS record reappears after having been deleted

  - by palmbardier

  I've got a Microsoft Windows Server 2003 R2 acting as a domain controller for a small network. It provides DHCP and DNS among a few other services. It's only got a single NIC, but it's configured with two IP addresses. I want it's name to resolve to one of the two IP addresses assigned to its NIC. I've unchecked "Register this connection's addresses in DNS" under the "Advanced TCP/IP Settings". Currently we've got two distinct DNS Host (A) records for this domain controller: dc-001 - 10.0.0.1 dc-001 - 10.0.100.1 I've deleted the first entry but it continues to reappear in my dnsmgmt snap-in. Unfortunately I'm not a Microsoft systems administrator by trade. Does anyone familiar with Microsoft server environments know why a deleted Host (A) record would reappear? Is there another check-box I need to toggle? Thanks in advance to all of you Microsoft experts out there.

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• Load testing nginx inside AWS

  - by andy

  I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other machines hitting it by using ab with -i (for head requests) -k (keepalives) -r (ignore failed requests) -n 500000 -c 20000. I'm struggling to generate more than 85 Mbit/s traffic from 4 machines, yet when I do scp a large file I get nearly 0.25Gbit/s of traffic going over the network. Are there any tools or approaches that I could use to load test nginx that might generate more load? I'm only interested in inbound traffic, so perhaps a DoS tool could help if it chucks away responses? I'm hitting a very small (40 byte) static asset, and have peaked at handling 50K concurrent connections and getting 25k reqs/s when just using a single load generator machine.

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• Dialogs appear on wrong monitor with SQL Server Management Studio 2008

  - by David

  I am running SSMS 2008 on Windows 7 with a dual monitor setup (one large, one small). SSMS is running on the secondary monitor, but everytime a dialog is opened, the dialog is placed on the primary monitor instead. I've tried moving the dialog over, closing it, and then re-opening it, but it doesn't remember and goes back to the primary monitor. This is really annoying for some of the designer dialogs, is there any way to fix this other than switching SSMS to the primary monitor? Is this a known bug with SSMS, or is it a problem with my particular setup?

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