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  • how to remove background layer of djvu file

    - by Jon
    Hello, I've downloaded some files from the Internet Archive. They come in different file formats and most of the time I use pdf. However, sometimes the scans are saves in colour instead of b/w. This makes it difficult/impossible to read on a dedicated ebook reader. In that case I downloaded the djvu files as on the PC you can select which layer (color, bw,fore,back) one would like to see. Selecting the bw gives excellent results. However, the ebook reader does not has this option. The question is, how can I remove /extract a layer from the djvu file and save only this layer. So far I've tried the following two approaches: 1) select bw in the djvu viewer on the PC and printed to postscript file. Followed by a ps2pdf conversion. This works, but generates a fairly large pdf file. Sure, I can again upload it to any2djvu but it just seems to much manual work for each file. 2) I tried the shared annotation feature and said (mode bw). This works on the PC as desired but is ignored on the ebook reader as the other layers are still present. Any help or suggestions would be greatly appreciated.

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  • How to diagnose a Windows XP hard crash

    - by Jon
    I have a 64-bit Windows XP machine which has hard crashed several times today. The symptoms are that the screen just goes blank, then the reboot cycle starts. There is no blue screen and even though it is switched on, no crash dump file is created. On all occasions it has happened during a period of high CPU/memory activity. I have run a full Dell diagnostics with no failures. Any ideas how to track this down further? Thanks.

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  • Using Twitter to accept messages for a web app

    - by Jon
    I'd like my web app to be able to accept direct messages via twitter. My app won't be sending our any spam, in fact it won't send out any messages at all. It will essentially be a bot controlled account as I would only access the account via an API to check for direct messages. Is this kind of usage permitted within twitter's t & c? Thanks.

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  • Enabling Shell colours through Putty SSH

    - by Jon
    I have set a number of configurations in my .bashrc file to set the appearance of shell on my Redhat machine. However, when I login as root using Putty, the colours are not shown. I can enable them again by typing 'su', which simply puts me back to root like I was when I logged into putty, but that isn't exaclty ideal. Is there some configuration file or something I can use to enable shell colours when I login with Putty? Thanks

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  • Does aria2 support write small files in batch?

    - by Jon
    I'm using aria2 to download 8 million jpg from flickr. Each image is about 100KB. I got a list of urls of these images in a txt file, the format is: http://farm2.staticflickr.com/1070/1151334893_5a8e7f77f4.jpg I'm wondering whether aria2 support writing small files in batch? Say write 100 image to disk when all of them are download in the memory, not just write every single file when the download is finished. Because I think writing in batch will better protect my hard disk. Or do you have other software or opensource code to recommend?

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  • SBS 2008 reinstall on new machine

    - by Jon
    We purchased a single license on Windows Small Business Server 2008 for a medical office, and soon after a power fault caused the server to overload, destroying the power supply and motherboard. I reinstalled on a new server, and have the domain up and running again, but under system properties it tells me I still need to activate windows, and that the product key currently entered is invalid for activation. I've been trying to figure out how to get in touch with Microsoft to explain the situation and get a new activation key issued without having to pay for another license which we can't afford, but the online documentation hasn't been particularly clear on the subject. Does anyone know how to do that, or if I do need the activation key to continue using SBS 2008? (It currently tells me I have 56 days left to activate) Any tips would be appreciated. I'm not strictly a computer guy and I'm feeling a little lost.

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  • 85 Hz on old/new driver looks the same like 75 Hz on previous one?

    - by jon
    I have old philips 107T5 CRT and Nvidia graphics card. I used old Nvidia driver (but it wasn't 'legacy' one when I installed it) for few years but recently I decided to install other Linux distribution. I used 75 Hz refresh rate and 1024x768 resolution on my previous distribution. After I installed the new distribution I had to install a Nvidia driver so I downloaded one from the Nvidia site (this time only legacy supported my card so I downloaded legacy and installed it). It wasn't automatically updating xorg.conf but I had my previous xorg.conf copy and I used it. When I run X I could only choose 85 and 75 Hz, 85 was checked as default. And now what shocks me: that default 85 Hz looks identically like 75 Hz on previous driver looked (at least to me). I tried 75 Hz out of curiosity and it's too bright, hurts, etc. But on the previous driver 75 Hz wasn't hurting my eyes. Why is it different? It's the same number after all, so it should always give the same results, right? That's my first question. Second question: Is 85 Hz OK for that monitor model? Would it break it? I tried to find the optimal refresh rate for this model but couldn't find it.

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  • How can I set up a database (SQL?) for literary annotations?

    - by Jon
    I'm a literature student and I'd like to be able to annotate literary texts (originally stored in HTML or as text files) on a word-by-word or line-by-line basis. I hear databases like mySQL or SQLite would be good ways to do this sort of thing, but I don't really know where to start. I'm comfortable with the linux command-line, and have done some HTML/CSS work in the past, so I feel unintimidated by databases and things...I just don't know what to start doing.

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  • What's the easiest way to duplicate a portion of a directory structure onto an external drive?

    - by Jon Cage
    I'm trying to move a large chunk of data from one of our servers onto an external drive for delivery to Amazon glacier storage. To do that, I'd like to copy a chunk of the server, preserving the directory structure. I.e. move this: \\MyServer\Some\Longwinded\Path\TheDataIWantToCopy \\MyServer\Some\Longwinded\Path\TheDataIWantToCopy\First bit of data\DataFile1.dat to this: D:\ D:\First bit of data\DataFile1.dat

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  • 32bit dll not loading with Enable 32 Bit Applications on IIS 7.5

    - by Jon
    I have a MVC 3 Web Site referencing a 32 bit DLL. The OS is Windows 2008 R2 x64. The website is in the ASP.NET 4 App Pool. I have turned on Enable32Bit but it doesn't work. I get a Bad Image Exception but can't find out to turn this level of logging on in IIS. I have setup up a page that outputs whether it's running 32bit or 64bit and when I turn on/off the Enable32Bit on the AppPool I get the correct output. The website is also in Full Trust. I'm at a loss to try and and get it to work. I do know that it works on Win7 32bit. Can you suggest some things to try? UPDATE: I have just written a simple Windows Forms App with a button on it which calls my DLL. This was built with target of x86 and it worked fine so there is an issue with IIS or ASP.Net I think. UPDATE 2: Does it matter if the ASP.Net Pipeline is Clasic or Integrated? I've tried both but same problem but thought it was worth asking UPDATE 3: I found this question trying to do the same thing and he gave up which isnt too helpful!!

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  • How to allow users to transfer files to other users on linux

    - by Jon Bringhurst
    We have an environment of a few thousand users running applications on about 40 clusters ranging in size from 20 compute nodes to 98,000 compute nodes. Users on these systems generate massive files (sometimes 1PB) controlled by traditional unix permissions (ACLs usually aren't available or practical due to the specialized nature of the filesystem). We currently have a program called "give", which is a suid-root program that allows a user to "give" a file to another user when group permissions are insufficient. So, a user would type something like the following to give a file to another user: > give username-to-give-to filename-to-give ... The receiving user can then use a command called "take" (part of the give program) to receive the file: > take filename-to-receive The permissions of the file are then effectively transferred over to the receiving user. This program has been around for years and we'd like to revisit things from a security and functional point of view. Our current plan of action is to remove the bit rot in our current implementation of "give" and package it up as an open source app before we redeploy it into production. Does anyone have another method they use to transfer extremely large files between users when only traditional unix permissions are available?

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  • Activating Windows 7 generates error code 0xc004F061

    - by Jon
    I got a new SSD and wanted to start over with Windows 7 on that disk. I did a clean install (my mistake) on the SSD and just went passed the activation part (left the key blank). Now that I have my system all setup, configured, files pulled back from backup, and ready to go, I'd like to activate Windows 7. However, I now get this error: The following failure occurred while trying to use the product key: Code: 0xC004F061 Description: The Software Licensing Service determined that this specified product key can only be used for upgrading, not for clean installations. Do I really need to wipe my system again, install Windows Vista, and then do the Windows 7 upgrade in order to use my upgrade key? Is there some kind of work around?

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  • How do I tell Windows to use 802.11 in preference to 3G?

    - by Jon Skeet
    I have a Samsung NC-10 netbook which I take to work every day. Most of the time I use it just on the train/bus, but I also use it at work and home. It has a built-in 3G card which I want to use when travelling, but I'd prefer to use wifi when I'm at work or home, for obvious reasons. Unfortunately, if the 3G connection is up, Windows appears to use that in preference to wifi. Starting up and shutting down the 3G modem is a bit of a pain - it's not hard as such, just a bit inconvenient. Ideally I'd like it to always be up, and even have the connection itself up all the time, but without routing traffic through it if there's a wifi connection up. This is what my Android phone does, for example. Is there somewhere in Windows which lets me express an ordering for network interfaces? I suspect the routing table may be relevant, but it's a bit of a pain to mess around with. I'd really expect there to be a simple GUI way of setting this up - after all, it would equally be useful when dealing with wired vs wifi connections. I'm currently using Windows XP Home, but Windows 7 answers would also be useful as I'll be migrating soon.

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  • Identifying a CAT6 cable in a bundle

    - by Jon Tackabury
    We had a contractor wire up our office with all the cables leading back to a central location. The only problem is that he didn't label anything, so we have no idea which cables go to which room. One end of the cable is terminated in a wall-jack (in the rooms), the other end is un-terminated and will be punched to a patch panel. Is there a way to identify the cables without having to terminate them? We'd like to group the cables on the patch panel by room, but I don't want to crimp/punch each cable twice. Thanks!

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  • Skype keeps making me automatically invisible

    - by Jon
    I keep getting made invisible automatically by skype. It doesn't even appear to happen at consistent intervals. Sometimes it doesn't happen at all, sometimes it happens every 5 seconds. I don't want this to happen, but I can't find an option to disable it. Does anybody know if it's possible to disable the invisible status or prevent the timer at all? Or is there a hotkey that I am inadvertently pressing that activates invisible mode? Thanks.

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  • How do I stop ubuntu waiting for me to "Press S to skip of C to continue..." when it fails to mount on startup?

    - by Jon Cage
    I've been having some issues with my RAID setup recently on my headless Ubuntu 10.04 server which means one of my mount requests is failing on bootup. Clearly I need to fix the RAID issue, but this machine is in my loft and having to crawl up there with a keyboard just so I can hit S a few times is extremely irritating. The exact message is as follows: The disk drive for /drv/photos is not ready yet or not present Continue to wait; or Press S to skip mounting or M for manual recovery I'd still like Ubuntu to try and mount it, but is there any way to tell it not to wait for the device?

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  • Samba 4 or Active Directory

    - by Jon Rhoades
    Now that Samba 4 has finally been released we find ourselves in new position of having a choice of of either upgrading our Samba 3 domain to either a Samba 4 domain on Linux or a Windows AD domain on Windows 2012. Given that we are equally expert at managing Windows and Linux servers, is there any reason not to use Samba 4 over AD on Windows; specifically: Are there functional differences from a Windows/OS X client perspective? Are there issues with other services that use AD, such as storage appliances that use AD/Kerberos for authentication/authorisation. Will the Microsoft "System Centre" suite of tools and other similar products work seamlessly? How will Samba 4 handle AD's Multimaster DC model and FMSO roles. Are there any other issues to be aware of, such as vendor support?

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  • Easiest way to move my Windows installation to an SSD?

    - by Jon Artus
    I've taken the plunge and bought an SSD and want to move my existing Windows installation over. The current hard disk is 500Gb, but I've trimmed the contents down to about ~40Gb. I'm transferring it across to a 100Gb SSD and looking for the easiest way just to copy everything across and set the SSD up as a boot device. I've looked at a few tools like Macrium Reflect, but they don't seem able to restore to a smaller drive. Do I need to go for something like PING to do this? I'm trying to avoid scary Linux-based boot utilities if possible, does anyone know of an easier way?

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  • Proxy Server suggestions

    - by Jon Menefee
    Here is the question I have that hopefully is not too general of a question. I have a network with approximately 25 PC's, 3 servers and 25 IP cameras. I have a firewall already on the network and it works fine for what I need, but my client is asking me if there is a way to put a Proxy server on the network to monitor where his employees are going when they surf the Internet. He is not wanting to block them (at least not thru the Proxy server), but he wants to make sure that they arent going to sites that would compromise the networked PCs. I have looked at TMG and it is a little more than what I want. I hesitate adding another firewall to the system because of the security cameras that are presently on the network (IP Cameras). I just want to put a policy in AD that would make certain Users (or Computers) use a Proxy server. Any suggestions on a good proxy server are welcome. Thank you

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  • Suggestions for hosted file sharing services

    - by Jon
    Before I pose my question, I will give some insight as per my scenario: I work for a small business (cost is an important factor) Our bandwidth is limited and would not support an in-house FTP server We need to share files (mostly pdf, inDesign, Illustrator documents) to our clients, and as we expand, we are finding that our current locally-hosted FTP solution is too slow and is becoming a detriment to our sales team. What we need is a remotely hosted solution to share files with our clients, specifically with the following features: Greater than 100gb of secure storage The Ability to distribute unique log in credentials to clients, granting access to a personalized directory or folder, while limiting access to other files on the server. A relatively simple web-based UI for clients with limited computer knowledge We have considered a dedicated remote server, and web-based services (box.net, yousendit.com, onehub.com, filesanywhere.com) but I am unsure as per the direction we should be taking - have I left another solution out? What would you suggest? Thanks in advance.

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  • Can I set up arbitrary filesystem redirection in Windows?

    - by Jon
    I am sitting in front of a Windows 7 machine that has no drive Q:. Is it possible to arrange for accesses to Q:\somedir to be redirected to an arbitrary location on the existing filesystems (for example, C:\Windows)? I would especially like a "set it and forget it" option, if one exists. I am assuming (although I have not tried it) that it is possible to use SUBST to mount an existing (empty, created for this purpose) folder as drive Q: and then MKLINK /J to create a directory symbolic link from Q:\somedir to wherever I want. However, this approach has a couple of drawbacks that I would like to avoid if possible: The drive Q: will be visible in the system. It is not as clean as I would like (removing the mounted folder will break it; a batch script needs to be manually added to the system startup). Is there a better option? If there is none and I am forced to make compromises, what is the closest I could get to the ideal solution? Assume anything is up for discussion.

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  • View old Inbox messages in (OS X) Mail.app via Exchange IMAP?

    - by Jon-Eric
    We're thinking of migrating our Mac users away from Entourage 2008 and instead using Mail.app (built into OS X Snow Leopard). We're running SBS 2003 so it's Exchange 2003 for now. When I setup an "Exchange IMAP" Mail account for a user, their Inbox shows up as empty. However, all of their other folders appear to be populated with their existing email correctly. New email shows up correctly in their Inbox. What do you have to do to see all of the old messages already in the Inbox? Thank you.

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