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• How to make a quiet laptop ? [closed]

  - by psihodelia

  Most modern laptops have very noisy fans. I am looking for a quiet laptop or a small stationary computer which has all its hardware built in a display. Most tasks will be pdf/docs processing, real-time audio processing, web-surfing and skype video chats. Certainly, there is no any fan-less model today; but maybe some of the existed laptops do not switch on their fans so often or implement different solutions? For example, an iPad has no fan at all and it is fast enough for my needs, but it has no normal operating system, so I can't use it for anything but audio chats and web-surfing. Or maybe I can buy a laptop and tweak it to make it absolutely noiseless? Can you recommend me any solution please? Thanks in advance!

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• Are ZFS snapshots + S3 a viable backup system for several VMs and general fileserver storage?

  - by AllanA

  I've been tasked with setting up a backup system for my small office (around 12 people). Most of our production stuff is on the AWS cloud, so what I need to back up are some small office/development files (under 100G right now), plus our operational VMs and development, which round out to a bit under 1T. I just need something reliable, convenient, and straightforward. I'm comfortable with Linux, FreeBSD, and to some extent Solaris 10, so I'm leaning toward a full server rather than an appliance system ala Openfiler or FreeNAS. What I'm contemplating is a small fileserver for general storage and nightly backups of the virtual machines, followed up by an offsite backup to Amazon's S3 storage service. It'd be the usual incremental backups nightly and full backup weekly. My question is if using ZFS snapshots, both locally and dumped to S3 via 'zfs send [-i]', is a viable backup tool? Or should I stick to using Duplicity, or some other method entirely? ZFS snapshots on the internal fileserver/backup machine sound like a perfect way to provide quick and convenient data recovery, so I'm likely to go with that for local redundancy. (If you folks see scenarios where relying on ZFS snapshots would be worse than a more traditional archiving backup, feel free to convince me.) But are snapshots flexible enough to lean on for recovery from the loss of my backup server? Or am I better off with something more traditional? (feel free to recommend free or commercial backup solutions you favor.)

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• Windows Server 2008 R2 Maximum Processor Limit Confusion

  - by Stevoni

  As I was looking through the Windows Server 2008 R2 specifications, I saw that the maximum supported processors is 64 sockets for Datacenter addition. This puts the maximum number or cores at 256 (if all sockets are quad cores), which I think it's just silly, but whatever. And now the questions: How does one set something like that up? (Obviously not for me, but humor me) Are there multiple dual socket motherboards running in a giant case with a ton of memory? How does the OS see all of the CPUs if they're on different boards? What would be a real world example of a need to have 64 sockets attached to one operating system vs 32 2 socket servers?

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• Are there any Parsing Expression Grammar (PEG) libraries for Javascript or PHP?

  - by Peter J. Wasilko

  I find myself drawn to the Parsing Expression Grammar formalism for describing domain specific languages, but so far the implementation code I've found has been written in languages like Java and Haskell that aren't web server friendly in the shared hosting environment that my organization has to live with. Does anyone know of any PEG libraries or PackRat Parser Generators for Javascript or PHP? Of course code generators in any languages that can produce Javascript or PHP source code would do the trick.

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• Parallel Dev: Should developers work within the same branch?

  - by Zombies

  Should multiple developers work within the same branch, and update - modify - commit ? Or should each developer have his/her own each branch exclusively? And how would sharing branches impact an environment where you are doing routine maintenance as opposed to unmaintained code streams? Also, how would this work if you deploy each developers work as soon as it is done and passes testing (rapidly, as opposed to putting all of their work into a single release).

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• What is windows 8 core?

  - by Journeyman Geek

  I've found some references, when looking for information on WAIK installs of windows 8 of a varient called windows 8 core, that can be installed off the professional edition disk. There's also a mention of it on winsupersite that says The cheapest, called MSDN Operating Systems, costs $699 a year ($499 renewal), and of course includes Windows 8 (Core), Windows 8 Pro, and Windows 8 Enterprise. You get five licenses each for Windows 8 Core and Pro, and one Multiple Activation Key (MAK) for Windows 8 Enterprise. What is windows 8 core? Is it the new 'home' edition or something else? What differentiates it from the pro and enterprise editions?

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• Linux program unable to access files in group

  - by user1064665

  I'm having trouble configuring things on linux so that a program can access certain files. Let's call it pgm A. It has uid uA and gid gA. In addition, uid uA is listed in /etc/group as a member of group gX. The problem is that pgm A cannot access files for which the uid is root and the gid is gX, but only when pgm A is called from another program, pgm B, which also runs as user uA. If I su as user uA and run pgm A from bash, it has no problem accessing files in group gX. But if another program, pgm B, which also runs as user uA, forks and execs pgm A, pgm A cannot access the files. I've verified that pgm A is indeed running as user uA, group gA, when launched from pgm B. So, if uA is a member of group gX, why can't the program access files which are readable by group gX? It's as if the operating system is ignoring the fact that user uA is also in group gX.

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• How to communicate between service controller and a service/daemon?

  - by Sorin Sbarnea

  It is easy to display the status of a Windows service or to control it (start/stop) from a GUI application but the question if how about receiving/sending notifications from the service? Like: service telling to the user monitoring it that it needs attention. Please consider that you can have several controllers started at any time in a multi-user environment. Do you know an example(open source) for this kind of communication? Extra points for a platform independent solution :)

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• supported MySQL for Python2.6.1

  - by SKSK

  Can any one tell me which MySQL version is suitable for Python2.6.1 to connect MySQLdb, I am using MySQL4.0.23 and MySQLdb of MySQL-python-1.2.3c1.win32-py2.6 after successfully installation also its showing No module named MySQLdb and I sent the Environment Variables also properly for Python2.6, using Windows XP, tested import MySQLdb through command prompt its not showing any errors then what could be the problem, I am straggling on this since last 2days, Please tell what could be the problem

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• xDebug : Output traces in php script?

  - by Industrial

  Hi! I have tried to use xDebug on my local Ubuntu environment to speed up development and it's a great asset. However, I would like to see the output of the Trace function directly in the browser, at the end of the script. How can this be done?

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• Question about using awk to print all columns great then nth

  - by Andy

  right now I have this line, and it worked until I had whitespace in the second field. svn status | grep '\!' | gawk '{print $2;}' > removedProjs is there a way to have awk print everything in $2 or greater? ($3, $4.. until we don't have anymore columns?) I suppose I should add that I'm doing this in a windows environment with cygwin.

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• What are the practical limits on file extension name lengths?

  - by GorillaSandwich

  I started using DOS back before Windows, and ever since have taken it for granted that Every file has a file extension, like .txt, .jpg, etc That extension is always short (usually 3 letters) I learned early that the extension is basically just a hint to the OS as to what the content type is. Eventually I got exposed to Mac and Linux, files with no extensions, etc. And of course I've seen shorter extensions, like .rb and .py. I just noticed that markdown-formatted files can have the extension .markdown, and it made me wonder - how long can that extension be? If I make it .mycrazylongextensiontypewoohoo, will certain operating systems or programs choke on the file? Are extension names generally short just for convenience, or is this based on some limitation, legacy or current?

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• Executing JavaScript with Python without X.

  - by Thomas

  I want to parse a html-page that unfortunately requires JavaScript to show any content. In order to do so I use a small python-script that pulls the html-code of the page, but after that I have to execute the JavaScript in a DOM-context which seems pretty hard. To make it even harder I want to use it in a server environment that has no X11-server. Note: I already read about http://code.google.com/p/pywebkitgtk/ but it seems to need a X-server.

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• How do you determine which file is imported in Python with an "import" statement?

  - by litghost

  How do you determine which file is imported in Python with an "import" statement? I am want to determine that I am loading the correct version of a locally modified .py file. Basically the equivalent of "which" in a POSIX environment.

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• trace an asp.net website in production - c#/asp.net

  - by uno

  Is there a way that I can trace every method, basically a line trace, in an asp.net web site in production environment? I dont want to go about creating db logging for every line - i see an intermittent error and would like to see every line called and performed by the website per user.

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• How to implement IDisposable properly

  - by Vince

  Hi, I've seen so much C# code in my time as a developer that attempt to help the GC along by setting variables to null or calling Dispose() on classes (DataSet for example) within thier own classes Dispose() method that I've been wondering if there's any need to implement it in a managed environment. Is this code a waste of time in its design pattern? class MyClass : IDisposable { #region IDisposable Members public void Dispose() { otherVariable = null; if (dataSet != null) dataSet.Dispose(); } #endregion }

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• ideas: per-file authentication in order to download

  - by suIIIha

  i would love to use mod_xsendfile but i live in a shared environment which does not provide such a module. processing large files such as videos through a server-side script and sending it to the browser that way seems to be unacceptable in my case, so i am looking for a way to enable per-file authentication in such a way that is not going to consume resources much. nobody shall know what the actual path is to the file they are downloading. please suggest how to do that.

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• Check for type of file system in an MSI package

  - by Hugo

  In my MSI package I need to set user rights to a directory using cacls.exe. It works fine in an NTFS environment but fails when run on a Fat32 file system. Is there a method to determine the type of file system of the drive the software is installed to? I'm using WiX 3 to create my MSI package but any hint pointing to the MSI database would help as well. Many thanks in advance.

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• XCode source code print issue

  - by George2

  Hello everyone, I am using MacBook Pro Mac OS 10.5 with related version of XCode. I am new to this development environment. I am developing C++ console/terminal applications (File-New project, then from the list on the left "Command line utility", and on the right "C++ tool".). For C++ source code file, I want to print source file content with line number. Any ideas how to do this? thanks in advance, George

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• How to relink existing shared library with extra object file

  - by awy

  I have existing Linux shared object file (shared library) which has been stripped. I want to produce a new version of the library with some additional functions included. I had hoped that something like the following would work, but does not: ld -o newlib.so newfuncs.o --whole-archive existinglib.so I do not have the source to the existing library. I could get it but getting a full build environment with the necessary dependencies in place would be a lot of effort for what seems like a simple problem.

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• How to copy or clone model?

  - by Zeck

  I have a model Book with attributes id, name, price. I have an instance of Book: b1 = Book.new b1.name = "Blah" b1.price = 12.5 b1.save I would like to copy b1, create another instance of the Product model. I'm tryid p1=b1.clone then p1.save but it didn't work. Any idea? And my environment is: Netbeans 6.9 RC2 JRuby 1.5.0 Thanks

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• Adding Sharepoint 2007/2010 ontop of TFS 2010

  - by Doug

  So i finally have everything up and running and everyone is mostly happy - TFS 2010 rocks! However i now want to add office sharepoint, i didn't want to have it installed first because i was worried that it would stuff with things and i wanted to look back on the TFS installation, once i knew how portals were created. So what is the best way to now add sharepoint to the installation without stuffing things up? i have a 2 server environment, with TFS on one and the database on another.

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• Commands not working in Windows 7 32-bit command prompt

  - by Precious Tijesunimi

  I have an HP laptop with a Windows 7 32-bit Home Premium operating system. My command prompt doesn't run lots of commands like help, shutdown, ipconfig, ping, etc. I get a message like: 'help' is not recognized as an internal or external command, operable program or batch file. Only simple commands like cd and dir are working. I noticed that whenever I navigate to c:/windows/system32, the command works. But I need to run some important commands like java on a file that is on the desktop and not in the system32 folder. How can I fix this?

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• When using Oracle load balancing and ADO.NET, how do you know which host the command executed on?

  - by Leeks and Leaks

  It's possible to use Microsoft's OracleClient assembly to connect to an Oracle database, and using Oracle's connection string format, set it up to use load balancing, provided your Oracle environment supports it. The question I have is how do you know after the fact, which db host the command actually executed against? Is there a way to retrieve the machine name from the load balanced set of machines?

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• Use old raid drive as boot device without data loss

  - by Gabriel

  There were two disks in sw-raid. There were /dev/md1 as swap, /dev/md2 as boot and a /dev/md3 with ext4. The sw-raid was disabled by stopping and removing mdadm and then zeroing the superblock on each /dev/mdX partition with: sudo mdadm --zero-superblock /dev/sda1 sudo mdadm --zero-superblock /dev/sda2 sudo mdadm --zero-superblock /dev/sda3 In the disk that is the first boot device, I don't know if it's relevant, the system type of each partition was set back from fd to 82 or 83 with fdisk, /etc/fstab was updated, changing /dev/mdX to /dev/sdaX, and grub was reinstalled on the boot partition (/dev/sda2) with grub-instal. But the system wont boot. What else should I do to use this disk as the boot device without reinstall or data loss? Current output of fdisk Device Boot Start End Blocks Id System /dev/sda1 2048 33556480 16777216+ 82 Linux swap / Solaris /dev/sda2 * 33558528 34607104 524288+ 83 Linux /dev/sda3 34609152 3907027120 1936208984+ 83 Linux With it doesn't boot I mean that it stops in the grub console (with the grub> symbol). A ls command says: (hd0) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1) (hd1) (hd1,msdos1) It's weird because hd1 was formatted with ext4...

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