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• information about /proc/pid/sched

  - by redeye

  Not sure this is the right place for this question, but here goes: I'm trying to make some sense of the /proc/pid/sched and /proc/pid/task/tid/sched files for a highly threaded server process, however I was not able to find a good explanation of how to interpret this file ( just a few bits here: http://knol.google.com/k/linux-performance-tuning-and-measurement# ) . I assume this entry in procfs is related to newer versions of the kernel that run with the CFS scheduler? CentOS distro running on a 2.6.24.7-149.el5rt kernel version with preempt rt patch. Any thoughts?

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• How to configure Postfix client relay to Exchange 2010 server

  - by helcim

  I'm getting (delivery temporarily suspended: SASL authentication failed; server myserver.com[xxx.xxx.xxx.x] said: 535 5.7.3 Authentication unsuccessful) when I try to relay mail from Postfix 2.5.5-1.1 on Debian Lenny box to Exchange 2010. I think I tried all possible combinations but I'm definitely missing something. Here is relevant part of main.cf: broken_sasl_auth_clients = yes smtp_sasl_auth_enable = yes smtp_sasl_security_options = noanonymous smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_pix_workarounds = smtp_sasl_type = cyrus smtp_always_send_ehlo = yes relayhost = myserver.com And I got libsasl2-modules installed. Anybody managed to successfully relay mail between Postfix and Exchange? Oh, and I already double-checked if password is right.

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• Open source system for swipe card access?

  - by Moduspwnens

  We're looking at replacing our campus-wide magnetic swipe card system with something more robust. The "programmer" side of me says there's got to be an open-source, scalable solution that already does this, but all I've been able to find are proprietary vendor-specific solutions. Ideally, it'd have the following: Based on some open standard that allows us to select from a wide selection of card readers (like IMAP or HTTP) Support different kinds of card access (magnetic strip, RFIDs, etc.) Future-proof (to the extent possible) The lack of information I'm finding leads me to believe I'm not searching for the right things... or such a solution doesn't exist. Is there not some basic, open-source solution to this (like MySQL for databases, or Moodle for an LMS, or Apache for a web server)?

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• Empty track in Windows Media Player 12 that can't be deleted

  - by David Brown

  Right after I installed a fresh copy of Windows 7, I synced with my DropBox account that contains all of my music and added the directory to Windows Media Player 12. I now have a strange track that really isn't a track at all. It's grouped under "Unknown Artist" and has absolutely no text. The only reason I know it's there is because it highlights on mouse-over. Double-clicking on it does nothing. When the song before it ends, Windows Media Player stops playing altogether until I choose a different song (it should continue to play the next song on its own). When I try to delete this mysterious track, nothing happens. I've cleared my library and re-imported everything, but this empty track keeps appearing. I have also checked my Music directory and there is no empty MP3. What is going on here?

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• Samsung i780 networking problem

  - by Infinity

  Hello guys! Maybe this is not the right place to ask this, but I give a try for it. Please don't rate it down, just ignore it if you don't like. So I have a Samsung i780 mobile phone and I would like to use the internet through my wireless router. I have connected to it. I got an IP address. My laptop is also connected to the same wireless network and I can ping the mobile phone and I get answer. When I open the internet explorer and enter an address it says that it cannot connect to the internet. I have googled very much, but can't find the problem. What do you think, what is the solution?

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• Create and use intermediate certificate authority on Windows Server 2012?

  - by Sid

  Background: Server OS is Windows Server 2012. GUI is installed as we come upto speed with powershell. Setup is staging, not production (yet). We have our (internal, domain limited) Root CA installed. I would like to take the Root CA offline to secure storage but before that I'd like to setup an intermediate CA which can take over actual live, online (int-RA-net) functionality Can someone guide me covering: creating the intermediate CA certificate request installing the intermediate CA certificate on domain controller (certification authority role already installed with Root CA online right now) use the intermediate CA to generate a certificate (any use certificate, just for demonstration purposes) Obviously this certification chain would be invalid on computers outside our domain (self trusted root - our root certificate is NOT from common 3rd parties). This last point is NOT a problem.

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• Problem in Installing Wordpress

  - by Hajloo

  I try to install Wordpress in a Windows Client with WebPI which provided by Microsoft. I had tostop installation process 3 time and installing PHP and mysql Extention manually. but everytime I continue setup by WebPi andfinally it show me a success message. But when I try to see installed wordpress in my client I see this Your PHP installation appears to be missing the MySQL extension which is required by WordPress. I asked it in StackOverFlow here but I couln't get the right answer. I install everything in **C:\Program files\** so these are the location C:\Program Files\MySQL\MySQL Server 5.1 C:\Program Files\Php C:\Program Files\ext mysql root password: admin wordpress database : wordpress wordpress database password : 123 here is my php.ini

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• Book recommendation for learning server management and Apache

  - by japancheese

  Hello, I'm currently managing a site that I feel could be optimized and utilized to be much faster, however, I'm having difficulty finding reliable information to do it. I find the Apache documentation to be a hard read, and too technical about things I don't have a strong grasp on. I'm just looking for a good beginner/intermediate book about server administration to learn as much as possible about Apache, as well as how to create a nice secure, robust server that doesn't crash at the first hint of unusual traffic surges. Thanks to anyone who can point me in the right direction.

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• How to use a custom Windows 7 system drive letter?

  - by Ivan

  The subject PC has many hard drive partitions dedicated for different purposes, C: being a Windows XP system drive and F: (which is actually the next primary partition placed right after C: physically) being intended to host a newly installed Windows 7 instance (meant for "dual boot" configuration). Needless to say the intention was all the partitions to have exactly the same letters under both OSes, needless to say Windows 7 has detected all of them in a completely different order which would not be a problem (as the non-system drives letters can be changed easily after installation) if it wouldn't have named it's system drive C: (meant to be F:), which I have no Idea how to change. Is there a way to set the letter you want? I don't mind reinstalling Windows 7 from scratch if it is to be set at installation time or even configured in some text files on the installation DVD. I have tried this way, but it renders the Windows 7 system desktop unbootable (gets stuck on "Preparing your desktop..." after "Welcome").

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• i am not able to connect to the application hosted on port 80

  - by shiva

  I am trying to access an application that is hosted on port 80. When i try the url from my personal computer , the site is not reachable but the same url on the server( which hosts the application) i am able to access the site. When i disable the firewall then i am able to access the site from my pc. So there is some rule which is blocking this port. How do i determine what windows firewall rule is blocking this port. I have disables IIS as well. Kindly point me in the right direction

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• How to remove uninstalled programs from Notification Area

  - by ekaj

  For some reason I had 2 instances of Apache running, and I have no idea how. I also had two instances of ApacheMonitor.exe showing in the "Notification Area Icons" place when you right click on your taskbar and go to properties. To fix the multiple instance issue, I deleted Apache completely and uninstalled the service (I did not use the .msi, I install from a .zip). Anyways, Everything from Apache is gone except the two things in the Notification Area Icon page. Does anyone know how to remove these two icons? I have completely uninstalled Apache, cleaned my registry with CCleaner, and rebooted. Does anyone have any other suggestions? Despite what the picture says, I do NOT have Apache installed, and it is not running.

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• Option do not show schema names in SQL Server Management Studio

  - by Jörgen Sigvardsson

  I love the fact that tree and list controls in Windows allows incremental searches. Just select a starting point, and type, and the control will select the best matching node for you. This works in SSMS, but there's an annoying problem, especially so in the table node. SSMS prefixes all table names with the schema name and a dot. To make an incremental search here, I have to type 'dbo.', followed by whatever I'm searching for. Is there an option to turn off this table name representation in SSMS? I hope I'm asking this on the right stack exchange site. If you feel it's off base, let me know!

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• Outlook 2010 - Export of an Exchange OST to PST creates files with different sizes each time

  - by Jiri Pik

  This is a most weird issue. I have a couple of exchange OST mailboxes, and just for security, I am exporting them using File / Import / Export to a file / Export to PST file. If I run the export consecutively, it always creates files with different file sizes, WITH NO ERROR OR WARNING that something went wrong. The files should be of the same size as you run it right after the previous backup finished. I found out that if the filesize is substantially lower, then a reboot and back up can fix this up. What's your insight into this problem? What could cause that the files have different sizes and what could have caused that there is no warning? I suspected some Windows Search issue as sometimes the backup fails with a dialog error stating that Windows Search terminated the export.

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• Fast Bookmarking In Firefox

  - by Kije

  Making bookmarks in Firefox has become tedious. Can any one point me to a bookmarking extension that works as follows... Decide you want to bookmark a page Left click your way to the target bookmark folder Right the target bookmark folder to get a "Bookmark this page here" option. (It is this "Bookmark this page here" add on that I am looking for) (Edit the book mark title tags etc) Click done Currently you have to: Decide you want to bookmark a page Click on the bookmarks menu pulldown Click on "bookmark this page" Click on the "folder" pulldown Click on "Bookmarks tool bar" or "Bookmarks menu" Left click your way to the target bookmark folder (in a teeny window that that doesn't move the focus as you expand folders) (Edit the book mark title tags etc) Click "Done" That would be four (or five) steps to replace the seven (or eight) steps to make a bookmark in an existing folder. @Chris I assume you are referring me to "Read It Later" http://www.ideashower.com/ideas/launched/read-it-later/ I'll take a look.

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• VirtualBox won't use any kind of hardware acceleration

  - by burnersk

  I see an problem with VirtualBox hardware acceleration functionality... My system configuration: MSI PH67A-C43 (B3) (BIOS: 2.70) Intel Core i5-2400 Windows 7 Professional SP1 64-bit Oracle VirtualBox 4.1.10 Oracle VirtualBox Extension Pack 4.1.10 I can select the individual acceleration options such as PAE/NX, VT-x/VMD-V or Nested Paging within VM-Settings but if I start the VM the accelerations will be disabled as of the tooltip from CPU (right next to shared folders). Each acceleration is "Disabled". Does this sounds familar to anybody? How can I solve this?

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• Return the date of the day under an if formula with Excel or VBA

  - by Celine

  I have two columns A and B and many lines with some specific tasks to be done. In column B, I have a drop-down list with the name of people who are scheduled for the task . And in column A, I want the date of the day the person signed off the task. What should I do in VBA or in Excel so that, for example, when somebody signs off a task in the cell B11, A11 returns me the date of the day. I have used the formula below in A11 =if (B11<"", today(),"") but everytime i open the file the date is updated. So it doesn't allow me to keep track of everybody's work. I tried with vba but couldn't write a function that gives me the right answer. i'm pretty new at vba so i'm sorry if my question sounds stupid

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• Can I build or test a computer without a case?

  - by jasondavis

  I am in the process of building a really nice new PC right now. It's going to have a nice Lian Li case with the internals powder coated black and all the wires will be sleeved. So my problem is I am getting parts in a couple days but my case will not be completed for about a month because it is on back order plus time to powder coat it. I am purchasing many of m y parts from newegg.com and they claim you must return any dead parts within 30 days or the invoice for there warranty to replace bad parts. So is it possible for me to set up the PC without a case just to test that the main parts are working correctly within the timeframe I am allowed? If this is possible, how do I deal with turning the system on/off without a powere button? Or is therer one on a motherboard? Thanks for any tips/advice

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• FreeNas running on ESXi - sometimes gets very slugish.

  - by Luma

  Hello everyone, I have a ESXi server (dual quad core, 8GB of DDR3 ram, 6x 1TB WD Blacks running in RAid 5 on the PErc 6/i controller. I have a 64bit freenas VM running, on this VM I keep about 200Gigs of stuff that my windows machines access. every now and then the throughput of this VM just dies, for example right now it can't even handle streaming a song and when I tried to transfer a folder the speed goes from 10-400KB/s. Might I add at this point that the ESXi box has dual gigabit network cards plugged into a good solid gigabit switch and other linux and windows VM's are just fine I have seen speeds over 90MB/s (frequently) The server still has ram left over (plenty actually) and cpu is very low (500-1000mhz) any ideas what could cause this? thanks. Luc

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• Why does 1GBit card have output limited to 80 MiB ?

  - by Gallus

  I'm trying to utilize maximal bandwidth provided by my 1GiB network card, but it's always limited to 80MiB (real megabytes). What can be the reason? Card description (lshw output): description: Ethernet interface product: DGE-530T Gigabit Ethernet Adapter (rev 11) vendor: D-Link System Inc physical id: 0 bus info: pci@0000:03:00.0 logical name: eth1 version: 11 serial: 00:22:b0:68:70:41 size: 1GB/s capacity: 1GB/s width: 32 bits clock: 66MHz capabilities: pm vpd bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation The card is placed in following PCI slot: *-pci:2 description: PCI bridge product: 82801 PCI Bridge vendor: Intel Corporation physical id: 1e bus info: pci@0000:00:1e.0 version: 92 width: 32 bits clock: 33MHz capabilities: pci subtractive_decode bus_master cap_list The PCI isn't any PCI Express right? It's a legacy PCI slot? So maybe this is the reason? OS is a linux.

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• Ubuntu: disable udev's persistent-net-generator.rules

  - by Luke404

  I'm using Ubuntu 12.04 LTS server edition and I am modifying /etc/udev/rules.d/70-persistent-net.rules to define my own mappings of ethernet interfaces to MAC addresses; that file is initially generated by rules in /lib/udev/rules.d/75-persistent-net-generator.rules at system installation time (or at the first boot, I actually don't know and it doesn't matter here). How can I be sure that my edited version will never ever be overwritten by anything? Removing the persistent-net-generator, as suggested on some websites, is not the Right Thing™ to do as told by comments in the file itself: it will be overwritten by any update of the udev package. I'm looking for a more formally correct way to disable it. Is it enough to just make sure that /etc/udev/rules.d/70-persistent-net.rules does exist? Maybe there are other events that could trigger its regeneration? (eg. adding or removing ethernet interfaces to the system?)

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• VMWare OVA file

  - by Matteo Mosca

  I've received an .OVA file and I need to be aple to open/parse it. When I try to open it with VMware player, I get the following error: "Failed to open virtual machine: Failed to query source for information." When I try to open it with the Converter standalone client I get: "Unable to parse the OVF file" The extension can be OVF or OVA so I did choose the right file tipe from the open file dialog. If anyone had similar experience and solved it, please let me know. Thanks.

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• How do I make h.264 work on YouTube on Firefox on Windows 7 64 bit?

  - by Ansis Malins

  Various news articles state that Firefox supports h.264 on Windows since version 20. As of this writing the version is 24, yet Firefox still can't play most YouTube videos. I did the HTML5 opt-in and tested both Firefox and Nightly. I also made sure media.windows-media-foundation.enabled in about:config is enabled, and it is by default both on Firefox and Nightly. What's wrong and how do I fix it? Edit: This video works. This video fails. They're both MP4 (right click video - stats for nerds), so Firefox's h.264 support works at least some of the time. Edit: When I go to a YouTube video that doesn't work, click Share - Embed and then copy-paste the src of the iframe tag into the address bar, the video works.

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• The computer after motherboard replacement turns on and off continually

  - by Marcin Rybacki

  Hi guys, First of all I would like to stress I'm beginner and probably I'm not doing something right. I replaced my old motherboard (AK35S20C Schuttle) with a new motherboard (Soltek SL-75DRV75). Unfortunately the replacement isn't working as expected. Symptoms are: The computer powers on, works less than a second and powers off. Then it powers on again and so on. It doesn't emit any sound, it looks like it resets very quickly. Do you have any suggestions what might be the problem?

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• Notepad/Edit equivalent for Linux command line

  - by Jason Kester

  I'm looking for a simple text editor that I can use from the command line in Linux to edit files. I'm used to editing files in windows, so I'm looking for something with the same keyboard interface. That means: SHIFT+Arrow Keys/PGUP/PGDN to select text CTRL+C, CTRL+X, CTRL+V to copy/cut/paste And that's pretty much it. Surprisingly I'm having a tough time finding something like this. Vi/emacs are naturally out. Nano comes close, but has its own non-standard cut/paste/select keyboard shortcuts. Surely this thing exists somewhere. Thanks in advance for pointing me in the right direction.

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• Backup database from default (unnamed) sql server instance with powershell.

  - by sparks

  Trying to connect to an instance of SQL Server 2008 on a server we'll call Sputnik. There are no firewalls in between the two devices. Right now I'm just trying to list databases [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SMO") | Out-Null [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoExtended") | Out-Null [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.ConnectionInfo") | Out-Null [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SqlServer.SmoEnum") | Out-Null $servername = "Sputnik" $remoteServer = New-Object("Microsoft.SqlServer.Management.Smo.Server") $servername $remoteServer.databases The following error message occurs: The following exception was thrown when trying to enumerate the collection: "Failed to connect to server Sputnik.". At line:1 char:15 + $remoteServer. <<<< databases + CategoryInfo : NotSpecified: (:) [], ExtendedTypeSystemException + FullyQualifiedErrorId : ExceptionInGetEnumerator

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