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• Looking for FTP server that allows user management from database

  - by hughesdan

  I'm planning a server application that will handle files uploaded via FTP. The application must parse text documents that it receives and write them to a database (most likely a document-oriented database like Mongo). And the application must also relay all large binary files it receives to Amazon S3 for storage and hosting. I'd like to manage all aspects of the FTP server programmatically. For example, when a user registers via a web page the application should be able to create the user account in the database and provision a directory on the server for receiving files. I'm using a Linux server but am otherwise open to considering any programming language or framework. I experimented with VSFTPD but didn't like the way the application relies on config files and the creation of users and directories via the command line. Can someone please recommend what server framework I should consider? I'm a little biased toward solutions that leverage Javascript/Nodejs or Python. However, I'm open to anything that can run on a Linux box.

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• Single sign-on for intranet?

  - by Jason Swett

  I'm trying to set up a single sign-on for my intranet. I've found a couple solutions online but I'm not sure if they apply to my particular situation. I have several subdomains on the same server. One level of user should be able to access all subdomains and another level of user should only be able to access some subdomains. Signing into one subdomain should make it so you don't have to log into any others. Can anyone point me in the right direction? I'm on Ubuntu using Apache.

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• Clipboard: Copy image, get path back when pasting in file input.

  - by disown

  Hi All. First question here on superuser. I sometimes get ad-hoc bug reports from customers, which I need to transfer to our online bug tracker. Works fine for text, but pictures are tedious. I'm looking for a solution to copy-paste images from documents (like excel sheets) in a way that if you paste an image to a file input (or text input) on a html page, the file will automatically be written to disk (tmp dir), and the path written to the file input field. This question is related to Directly paste clipboard image into gmail message, but I would like to ask if there is a solution using a local program only. I'm interested in solutions for all OS's.

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• How can I disable ipv6 on Ubuntu Server 8.04?

  - by Boden

  I'm trying to run Dell OMSA on Ubuntu 8.04. However, it's binding to ipv6 and not to an ipv4 address. I can't seem to figure out how to change this behavior. So, since I don't need ipv6 support, I'd like to just disable it and see if that clears things up. I've tried blacklisting ipv6 in /etc/modprobe.d/blacklist (blacklist ipv6), and turning it off in /etc/modprobe.d/aliases (alias net-pf-10 off). I'm seeing both solutions recommended in forums and blogs, but neither works.

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• Domain connection shows as "unauthenticated"

  - by gareth89

  I have seen various different questions for this problem floating around but either the circumstances arent the same or the solution doesnt work so thought i would post it to see if anybody has any suggestions. Various domain PCs and laptops appear to randomly give the connection name of "lewis.local 2(Unauthenticated)" - lewis.local being our domain - and provides an exclamation mark where the network type logo is normally shown. This also appears to happen every time connecting via vpn. Our setup is: 2 servers both running windows server 2003 R2 (x32) main server has AD, DNS and DHCP installed IPv4 on approx 30 client machines (some wired, some wireless) If anybody has any thoughts on solutions i would appreciate it. I have tried removing all but AD server roles, resetting all of the systems and nothing. It doesnt prevent anything from working just like a domain connection most of the time however it is getting fustrating! Also dont know if it could have anything to do with it but the DHCP server seems to have quite a long lead time on issuing the IP address to the client.

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• What is the best backup solution for VMware Infrastructure system that hosts a wide variety of VMs?

  - by SBWorks

  In a situation where you are running: VMware Infrastructure 4.x with multiple hosts Over 150 VMs with a wide variety of operating systems (Linux in a half dozen distros, Solaris, every MS version, etc.) in multiple languages with almost every mix of installed software (luckily, no Exchange mail servers) Using an EMC fiber channel SAN The VWs that need need to be backed up use about 2 terabytes of data (total) The goal is to keep backups for about 3-months At this rough scale, what backup solutions have worked well for you? And, as an add-on question, did any of them have de-duplication that you thought was effective and useful?

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• Flexible classroom environments (OS, Office)

  - by HannesFostie

  I work in the IT department of a training center, we still offer XP and Office 2003 trainings but also offer Vista and Win7 and Office 2007. Currently, we use VMs on VMware Server but this is obviously not a superb choice. We're thinking of implementing something like VDI (brainstorm phase, we hardly have any details) but I decided to check here if people would have some clever alternatives. Requirements: * Flexible when it comes to deployment * Centralized management would be a big plus * Allow for different software, whether they be compatible or not (all of office except for outlook can be installed simultaneously. for outlook you need to choose between 2003 or 2007) * Allow for different OS We have a big enough budget to implement a proper SAN environment to accomodate the virtualization of the solution, whatever kind it may be. A support contract will probably be necessary as well, because we need to be able to offer quick solutions to problems and with only 2 sysadmins that is simply impossible to guarantee.

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• How to track $HOME with git

  - by Francesco

  Hello, I would like to track my $HOME dir with git. I've got many other git repos in other subdirs (eg $HOME/projects/repo_1 and so on), which shouldn't be tracked, since they already are. I have found git-home-history but it appears from the archive that the project is no longer actively developed. What approach do you recommended ? Is ghh mature enough? I am on a Mac but I am interested in cross platform solutions, too. Thanks, Francesco ps: btw this is my first Super User question :-) I have looked but didn't find duplicates, please point me if this has been already discussed.

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• Sharp flat panel scaling with Nvidia drivers

  - by Brecht Machiels

  I have a Samsung 226BW flat panel with a 1680x1050 native resolution. As my PC is rather dated (Athlon XP 2600+ and GeForce 6600 GT), I need to run more recent games (but still old) on a lower resolution. Unfortunately, scaling low resolutions to 1680x1050 results in a very blurry image (bilinear scaling). I have created a custom resolution of 840x525 in the Nvidia control panel. Technically, this resolutions allows perfect upscaling to 1680x1050 without the need for bilinear interpolation. Unfortunately, the Nvidia driver always seems to do bilinear scaling, again resulting in a blurry image. However, I seem to remember that I did obtain crisp images using this resolution in the past (before a Windows re-install). Maybe only some driver versions support integer upscaling without bilinear filtering? Or perhaps there are other solutions?

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• Motorola SBG6850 / Linksys WRT54G network problem

  - by user96407

  I am trying to resolve issues with connecting my desktop and LAN capable printer to my network. I recently upgrade to the Motorola Cable Modem Gateway SBG6580 and have TWC coming into it, this works great for wired and wireless connectivity. Although, I am unable to connect to my device from this modem gateway. So, I am trying to cable a Linksys WRT54G (firmware 4.21.4 build 0) to the backside of the SBG6850 so I can use my printer on my network from both my wired desktop and wireless devices. I am pulling wireless off of the SBG6580 and do not want to change this. I have disable the wireless feature on the Linksys WRT54G at this moment. Can someone please help me through this dilemma? I am open to both wired and wireless solutions, but please tell me which approach your sharing in the first line of your response. Cheers!

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• How to ignore query parameters in web cache?

  - by eduardocereto

  Google Analytics use some query parameters to identify campaigns and to do cookie control. This is all handled by javascript code. Take a look at the following example: http://www.example.com/?utm_source=newsletter&utm_medium=email&utm_ter m=October%2B2008&utm_campaign=promotion This will set cookies via JavaScript with the right campaign origin. This query parameters can have multiple and sometimes random values. Since they are used as cache hash keys the cache performance is heavily degraded in some scenarios. I suppose there's a not so hard configuration on cache servers to just ignore all query parameters or specific query parameters. Am I right? Does anyone know how hard is it in popular web cache solutions, to create ? I'm not interested in a specific web cache solution. It would be great to hear about the one you use.

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• All files trying to start in Notepad

  - by Jormal

  This question has been asked, but the solutions given were worthless to me because ALL files are trying to open in Notepad. I mistakenly associated all exe files with Notepad and everything is trying to open within Notepad now. That includes regedit, so suggesting I use regedit to doctor files does not work (cmd window will not open from Winkey + R - Run). It also includes any program I download to fix the issue. I also can not right click and choose Open With because that is not a given option when right clicking on a majority of files, at least none of the exe files I want to start. Yes, I tried it on the program files, not the shortcut. I also can not use System Restore because it, too, tries to open in Notepad. I've been banging my head uselessly on this for hours. Could someone help me out?

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• How to add the Windows defender into Windows Explorer's right click menu to scan a particular drive/folder/file on demand?

  - by avirk

  There is no option in Windows Explorer to scan a particular drive (or file) on demand by right clicking on it in Windows Explorer as we had in Windows 7 with Microsoft Security Essentials or like other antivirus solutions. I know we can run a custom scan for the particular drive or specific folder but that process is too lengthy and time consuming. The guide How to Add a "Windows Defender" Cascading Desktop Context Menu in Windows 8 explains how we can add Windows Defender in the desktop right click menu, so I'm curious, is there a way to add it in the Windows Explorer right click menu to launch a search whenever I need to?

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• Reading PFS First Choice and Word Perfect 5 files in an XP or Windows 98 environment

  - by indyK1ng

  Hello all, My priest has 3 computers, Windows 3.1, Windows 98 and Windows XP. Recently his power supply blew out on his Windows 3.1 computer and he needs to get to the data on the hard drive. He's looking into imaging the hard drive and setting it up as a VM, which might be a bit much for him. Ignoring getting the data off the hard drive as a separate problem, are there any programs out there that can read files from PFS First Choice and Word Perfect 5. He already has Microsoft Office so solutions involving that are preferable. If he can install the software on his Windows XP or 98 computer, that would be helpful too. Thank you for your help

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• which NoSQL for billions of records [closed]

  - by airtruk

  There are plenty of discussions around NoSQL databases around and a lot of them are about data logging in the social media section. The problem I'm trying to solve falls more into the scientific computing section, where I have several 1000s of billions of pieces of information that I want to query with different a different criteria for each query. All data is at least a 4 dimensional space, which means I have a 3D location (x,y,z) and a time component - plus the value and unit. Say temperature at xyz and 10min in degree Celcius. A typical query result may contain several million results ... I have read about pretty much all NoSQL solutions being exceptionally fast for inserting records, but when it comes to querying them it's a different story. I'm leaning towards MongoDB for the implementation and platform for developing the necessary code since it is more closely related to the current solution using MySQL. Happy to be proven wrong though when it comes to the choice of the NoSQL solution.

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• How difficult is it to setup a mailserver?

  - by Jacob R

  I want a secure mail solution, as I am looking to move away from Google and other parties looking into my private data. How much of a PITA is it to setup my own mailserver? Should I go for an external provider with a good privacy policy and encrypted data instead? I have a VPS running Debian (with a dedicated IP + reverse DNS), and I'm a fairly capable Linux administrator, having setup a couple of webservers, home networks, and looking over the shoulder of sysadmins at work. The security I currently have on the VPS is limited to iptables and installing/running the bare minimum of what I need (currently basically irssi and lighttpd). When setting up a mail server, is there a lot of stuff to take into consideration? Will my outgoing mail be marked as spam on other servers if I don't implement a number of solutions? Will reliable spam filtering be difficult to setup? Can I easily encrypt the stored mail?

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• sharepoint administrative server not started causing sharepoint deployment instability

  - by Nathan

  When i deploy anything to a variety of sharepoint servers i get problems with some packages failing, from what i can see the only error given is as below. The timer job for this operation has been created, but it will fail because the administrative service for this server is not enabled. If the timer job is sched uled to run at a later time, you can run the jobs all at once using stsadm.exe - o execadmsvcjobs. To avoid this problem in the future, enable the Windows ShareP oint Services administrative service, or run your operation through the STSADM.e xe command line utility. Is this a known problem? I googled for the text but got only one other person with the problem who simply worked round it. I'm trying to batch deploy solutions programmatically and so these errors render the whole code worthless if you have to go back and redo bits by hand afterwards. Is batch deployment simply not possible? Thanks!

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• Linux RAID-0 performance doesn't scale up over 1 GB/s

  - by wazoox

  I have trouble getting the max throughput out of my setup. The hardware is as follow : dual Quad-Core AMD Opteron(tm) Processor 2376 16 GB DDR2 ECC RAM dual Adaptec 52245 RAID controllers 48 1 TB SATA drives set up as 2 RAID-6 arrays (256KB stripe) + spares. Software : Plain vanilla 2.6.32.25 kernel, compiled for AMD-64, optimized for NUMA; Debian Lenny userland. benchmarks run : disktest, bonnie++, dd, etc. All give the same results. No discrepancy here. io scheduler used : noop. Yeah, no trick here. Up until now I basically assumed that striping (RAID 0) several physical devices should augment performance roughly linearly. However this is not the case here : each RAID array achieves about 780 MB/s write, sustained, and 1 GB/s read, sustained. writing to both RAID arrays simultaneously with two different processes gives 750 + 750 MB/s, and reading from both gives 1 + 1 GB/s. however when I stripe both arrays together, using either mdadm or lvm, the performance is about 850 MB/s writing and 1.4 GB/s reading. at least 30% less than expected! running two parallel writer or reader processes against the striped arrays doesn't enhance the figures, in fact it degrades performance even further. So what's happening here? Basically I ruled out bus or memory contention, because when I run dd on both drives simultaneously, aggregate write speed actually reach 1.5 GB/s and reading speed tops 2 GB/s. So it's not the PCIe bus. I suppose it's not the RAM. It's not the filesystem, because I get exactly the same numbers benchmarking against the raw device or using XFS. And I also get exactly the same performance using either LVM striping and md striping. What's wrong? What's preventing a process from going up to the max possible throughput? Is Linux striping defective? What other tests could I run?

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• Subversion problem, repo has moved

  - by Rudiger

  Hi, I've set up subversion on a CentOS fresh install. Web view works fine and gives no errors and requests password but when I try and access it through svn client (xcode) it gives the error 175011 (Repository has been moved). I've tried some of the solutions out there but no success. My subversion.conf: <Location /repos> DAV svn SVNParentPath /var/www/html/repos # Limit write permission to list of valid users. # Require SSL connection for password protection. SSLRequireSSL AuthType Basic AuthName "Authorization Realm" AuthUserFile /etc/svn-auth-conf Require valid-user </Location> My Apache DocumentRoot: /var/www/html I've only set up one svn repository so far so there shouldn't be any conflicts there. If you need any more info let me know. Thanks

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• secure synchronization of large amount of data

  - by goncalopp

  I need to automatically mirror a large amount (terabytes) of files in two unix machines over a slow link (1 Mbps). This needs to be done frequently, but the data doesn't change too much (delta transmission doesn't saturate the link). The usual solution would be rsync, but there's an additional requirement: it's undesirable, from a security standpoint, that either the source or destination machines have (keyless) ssh keys to each other, or any kind of filesystem access. All communication between the two machines should thus be initialized (and mediated) through a third machine. I've asked a separate question about rsync in particular here. Are there other obvious solutions I'm missing?

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• Problem with Skype in Snow Leopard

  - by Am1rr3zA

  Ever since I upgraded my MacBook Pro from Leopard to Snow Leopard I have always had problems with Skype. When I start a video chat, Skype tells me that my camera is not installed on the machine (even though it clearly is). After searching the internet I have found some 'solutions' but none of them work. After trying them, it makes my camera feed appear as a blank, green image. How can I get Skype to function with the built in iSight with Snow Leopard properly? is there any body else face this problem?

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• How to access an SD card from a virtual machine?

  - by Punit Soni

  I want to format an SD card from my Linux virtual machine. I have a built-in SD card reader in my laptop. I tried using VirtualBox and VMware Player and installed Ubuntu 10.04 guest. None of them are showing the SD card reader as a device. I can access the SD card from the Windows host. I am not interested in solutions using shared folders as I want to access the SD card as hardware (it should show up in /dev). I basically want to set up the SD card for BeagleBoard, but I don't want to install physical Ubuntu in my PC.

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• How to install a wiki server

  - by gvalero87

  I would like to install a wiki on my server so I can let people I know to edit documents. So, I don't wan it to be as open as wikipedia. I would like something as google docs (the thing is google docs doesn't handle images and tables on documents very well), doesn't have to be in real time as google does it. The first thing I noticed looking over internet there are different solutions. Maybe what I'm looking for is the easiest one to install. If a want to use the wiki technology don't have to much time investing on errors. Thanks for your opinions

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• What could cause the keypad backlights to spontaneously illuminate on my Palm Treo? [closed]

  - by LeopardSkinPillBoxHat

  I have a Palm Treo 680 smart phone. I have noticed recently that when the phone is turned off, the keypad backlights will spontaneously illuminate. This is particularly annoying because it drains the battery life of the Treo -- when I woke up this morning, the battery was completely flat and I had to plug it in to wake it up again. I suspect that this has something to do with the Energy Dimmer application (I have version 2.16 installed). I have disabled this application today to see if it makes the problem go away. Has anyone else had this problem, and do you have any solutions?

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• How to Diagnose a Pre-Operating System Load or Hardware Issue

  - by soandos

  How can I find out if my problem is hardware based? If it is, how can I figure out what component is to blame How can I fix other pre-operating system issues? As an aside, what are all of these components responsible for, and if they break, what can go wrong? (This question comes up frequently, and the suggested solutions are usually the same. This community wiki is an attempt to serve as the definitive, most comprehensive answer possible. Feel free to add your contributions via edits.)

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