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• Good set of web hosting permissions?

  - by Jorge Israel Peña

  Hey guys, I just got a linode and I'm in the process of configuring it. It's running nginx with php-fpm and passenger. nginx was compiled and is running as user nginx. php-fpm (php with fastcgi process manager) is running as www-data (in group www-data). My sites are currently in /var/www, so for example /var/www/test.com I'm just wondering what the general 'flow' of things is. So for example, /var/www is owned by root, should I chown of /var/www/test.com to nginx or www-data? Or should I put nginx in the www-data group? How should site uploading work, I just transfer files to the /var/www/test.com directory as root (sudo) and then chown -R www-data:www-data .? Thanks. I'm capable of figuring things out on my own, I'm just wondering what the typical/general way of handling users/groups/permissions/site-files is on linux with a webserver.

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• Media center consumes all available memory when attempting to play music off of a server

  - by RCIX

  I have Windows 7 Ultimate, and recently, when i try to play a song off of my Twonky Media Server/Windows Media Connect (based on an HP WHS with an Atom), it plays choppily. When i open Resource Monitor, it shows that after ordering the music to play, memory usage rapidly spikes to consume most, if not all, of the available memory on my system (excluding a couple hundred megabytes in standby). Why does it do this and is there anything i can do to stop it? Edit: it happens when I attempt to browse the server's music, not just when i play music. Edit 2: the "ehshell" process is what consumes the memory, appears to me something specific to media center. Moreover, the ehshell process doesn't die in this case. Edit 3: It only happens when browsing my Twonky library, and not my Windows Media Connect.

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• Why is a software development life-cycle so inefficient?

  - by user87166

  Currently the software development lifecycle followed in the IT company I work at is: The "Business" works with a solution manager to build a Business Requirement document The solution manager works with the Program manager to build a Functional Spec The PM works with the engineering lead to develop a release plan and with the engineering team to develop technical specifications If there are any clarifications required, developers contact the PM who contacts the solution manager who contacts the business and all the way back introducing a latency of nearly 24 hours and massive email chains for any clarifications By the time the tech spec is made, nearly 1 month has passed in back and forth Now, 2 weeks go to development while the test writes test cases Code is dropped formally to test, test starts raising bugs. Even if there is 1 root cause for 10 different issues, and its an easily fixed one, developers are not allowed to give fresh code to test for the next 1 week. After 2-3 such drops to test the code is given to the ops team as a "golden drop" ( 2 months passed from the beginning) Ops team will now deploy the code in a staging environment. If it runs stable for a week, it will be promoted to UAT and after 2 weeks of that it will be promoted to prod. If there are any bugs found here, well, applying for a visa requires less paperwork This entire process is followed even if a single SSRS report is to be released. How do other companies process such requirements? I'm wondering why, the business cannot just drop the requirements to developers, developers build and deploy to UAT themselves, expose it to the business who raise functional bugs and after fixing those promote to prod. (even for more complex stuff)

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• Automatic document generation

  - by Bowler

  I have some data in an excel file from which I have to generate a report. I repeat this task fairly regularly and am looking to automate it. I have a LaTeX project into which I usually just copy data by hand, export the necessary worksheets as pdfs and add them to my LaTeX project and compile with pdflatex. It has occured to me that there must be a way to automate this process. Is there an efficient way to export the data from excel and into a LaTeX project, possibly a vba script in excel could run the process? Also, it doesn't have to be LaTeX, I'm not all that experienced with MS office's more advanced features is there some way akin to a mail merge that I could achieve this with? In some ways this might be better in case I have to pass the work on to someone who doesn't know LaTeX. Thanks.

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• Hidden Gems: Accelerating Oracle Data Integrator with SOA, Groovy, SDK, and XML

  - by Alex Kotopoulis

  On the last day of Oracle OpenWorld, we had a final advanced session on getting the most out of Oracle Data Integrator through the use of various advanced techniques. The primary way to improve your ODI processes is to choose the optimal knowledge modules for your load and take advantage of the optimized tools of your database, such as OracleDataPump and similar mechanisms in other databases. Knowledge modules also allow you to customize tasks, allowing you to codify best practices that are consistently applied by all integration developers. ODI SDK is another very powerful means to automate and speed up your integration development process. This allows you to automate Life Cycle Management, code comparison, repetitive code generation and change of your integration projects. The SDK is easily accessible through Java or scripting languages such as Groovy and Jython. Finally, all Oracle Data Integration products provide services that can be integrated into a larger Service Oriented Architecture. This moved data integration from an isolated environment into an agile part of a larger business process environment. All Oracle data integration products can play a part in thisracle GoldenGate can integrate into business event streams by processing JMS queues or publishing new events based on database transactions. Oracle GoldenGate can integrate into business event streams by processing JMS queues or publishing new events based on database transactions. Oracle Data Integrator allows full control of its runtime sessions through web services, so that integration jobs can become part of business processes. Oracle Data Service Integrator provides a data virtualization layer over your distributed sources, allowing unified reading and updating for heterogeneous data without replicating and moving data. Oracle Enterprise Data Quality provides data quality services to cleanse and deduplicate your records through web services.

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• Building a complete program?

  - by Bob

  Reading books, watching videos, and reviewing tutorials is all very easy. Taking notes and actually learning the material may be slightly harder, but even then, anyone with a decent brain and a fair amount of interest, it's easy enough (not to mention, fun). The thing is, it doesn't really prepare you to write a full program or website. Let's say you're those teens (only in highschool, no true (college level) computer science or programming courses, and no real world experience), and you come out with Groupon. Or even Mark Zuckerburg, sure he was a genius, and he was a very capable programmer... but how? How do you recommend that people who are not necessarily new to programming, but new to programming real applications and real programmers go about developing it? What is the "development process" - especially for single programmers (or maybe 2-3 teens)? Also, as far as web development goes, what is the process? Was something like Facebook or Groupon written with a framework (like CodeIgniter or Zend for PHP)? Or do they develop their own frameworks? I'm not asking how to come up with a great idea, but how to implement great ideas in an effective way? Does anyone have advice? I've read a couple of books on both C and C++ (primarily the C Programming Language and the C++ Programming Language) and taken AP Computer Science (as well as read a few additional books on Java and OOP). I also have read a few tutorials on PHP (and CodeIgniter) and Python. But I'm still in highschool, and I'm technically not even old enough to work at an internship for a few more months.

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• Is chroot the right choice for my use case?

  - by Anthony

  Backstory: I am working on setting up a MineCraft server and want to allow admins to have ssh access to the MineCraft server console and appropriate mc server files, but not the whole system. The console provided by the minecraft server is only available to the user that launched the process. In addition, the admins will need terminal access to some basic cli tools such as wget, cp, mv, rm, and a text editor. Plan: I have already setup the ssh aspect of things, requiring pre-shared keys and whatnot. Setup a jailed environment in which all user activity will be contained. Setup user accounts. - The first user account will be the minecraft user. The minecraft user will start the MC server in a multiuser screen session and allow the other admins to attach to it. - Subsequent users should have their own /home directory for normal usage. Setup acl for the appropriate files to allow each user to edit the mc server files. No one will be doing system updates, nor will anyone be installing any programs, so I'll be the only user with sudo. The Issues: I don't want the ssh users to have access to the whole system. Users will still need to use wget or curl to update the mc server files. Is chroot the right tool for this use case, or is there something more appropriate for the job? I have no experience setting up a chroot environment and have found several tools to aid in this process. Jailkit seems to be the most robust, but it's not in the standard repos.

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• Where can I find ready to use windows scripts that used robocopy?

  - by Geo

  We are installing the Windows Resource Kit, and that installs RoboCopy. We want to have access to a few windows scripts that uses RoboCopy so we can start from those to build something else. Any ideas on where I can find a few samples? NOTE 1: A bit of information. Every time we try to copy D drive to E drive (new drive) we get an error that says: ERROR 32 (0x000000020) Copying File d:\pagefile.sys The process cannot access the file because it is being used by another process. Waiting 30 seconds. Just to help figure it out.

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• How to pass parameters to a function?

  - by sbi

  I need to process an SVN working copy in a PS script, but I have trouble passing arguments to functions. Here's what I have: function foo($arg1, $arg2) { echo $arg1 echo $arg2.FullName } echo "0: $($args[0])" echo "1: $($args[1])" $items = get-childitem $args[1] $items | foreach-object -process {foo $args[0] $_} I want to pass $arg[0] as $arg1 to foo, and $arg[1] as $arg2. However, it doesn't work, for some reason $arg1 is always empty: PS C:\Users\sbi> .\test.ps1 blah .\Dropbox 0: blah 1: .\Dropbox C:\Users\sbi\Dropbox\Photos C:\Users\sbi\Dropbox\Public C:\Users\sbi\Dropbox\sbi PS C:\Users\sbi> Note: The "blah"parameter isn't passed as $arg1. I am absolutely sure this is something hilariously simple (I only just started with doing PS and still feel very clumsy), but I have banged my head against this for more than an hour now, and I can't find anything.

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• The balance between client and server functionality

  - by Eugen Martynov

  I want to bring the discussion that started in our teams and get your opinion about it. Assume we have an user account which could have different credentials for authentication and associated email to recover. An user has possibility to do signup with an email or use his social profile to complete signup process. As an Rest API from the backend to client looks like: Create account Authorise Update user data Link social account Register email Verify email In addition our BE is distributed and divided between several services/servers/clusters. So different calls are related to different end points. In case of the social sign up some of steps should be skipped or simplified. For example, with Facebook signup we could already skip email registration and verification step (we ask email permission form user), linking the social account and pre-fill user displayed name. So we proposed to have another end point which will hide/combine different calls on BE and return whole process result to the clients. The pros for this approach: No more duplication of functionality between clients Speed up the networking and user experience The cons for this approach: Additional work for backend Probably most complex scenarios in future updates I would like to get your opinion or experience with this situation. Especially if you already experienced point #2 from against reasons.

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• Xorg becomes unkillable at 3AM

  - by chew socks

  Most nights, some time in the hour of 3AM my xorg process will increase to 100% cpu and gpu load will also increase to 100%. The process also becomes unkillable. I cannot sudo kill -9 it or get back control with sudo service lightdm restart. I also cannot switch to to a tty screen with ctrl + alt + f1. To reboot I have to log in with ssh, but this is not perfect because if I reboot while it is doing this my ZFS pool will fail to mount when it comes back up ( that is where my /home is ). Does anyone have any ideas as to why I can't stop and restart xorg, or even better, know why this is happening? Thanks NOTE: For anyone who comes looking for the same problem. I disabled catalyst AI and made it through the night. I've been up for 1 day 3 hours now. My record for this month is 2 days and 19 hours without a problem. My all time record is 6 days without a crash. I'll post here if it crashes again or I'm able to set a new record.

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• SQL Server Migration Assistant for Oracle problem

  - by Paul

  I've recently installed SSMA on my computer and after connecting to both the Oracle instance (which holds the database to be converted) and the SQL Server. I've mapped the needed schemas from oracle to mssql. The problem is that when i click on the report button for the assessment report there's an error popping up: Assesment Error : Nothing to Process The output window states: Starting conversion... Analyzing metadata... Conversion finished with 0 errors, 0 warnings, and 0 informational messages. There is nothing to process. Has anyone got experience with SSMA. I can't figure out what I am doing wrong. Thank you.

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• Error while reomving the new kernel 2.6.37

  - by Tarek

  Hi! I tried to install the new kernel but something went wrong and I'm trying to remove it now. The error massege is: mhd@Tarek-Laptop:~$ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-image-2.6.37-020637-generic 0 upgraded, 0 newly installed, 1 to remove and 9 not upgraded. 1 not fully installed or removed. After this operation, 111MB disk space will be freed. Do you want to continue [Y/n]? y (Reading database ... 188780 files and directories currently installed.) Removing linux-image-2.6.37-020637-generic ... Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 2.6.37-020637-generic /boot/vmlinuz-2.6.37-020637-generic /etc/default/grub: 33: Syntax error: EOF in backquote substitution run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 2 Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-2.6.37-020637-generic.postrm line 328. dpkg: error processing linux-image-2.6.37-020637-generic (--remove): subprocess installed post-removal script returned error exit status 1 Errors were encountered while processing: linux-image-2.6.37-020637-generic E: Sub-process /usr/bin/dpkg returned an error code (1) The previous unsloved error is on this bug.

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• How can a driver change the kernel page table?

  - by Naruto

  I am encountering an issue with kernel memory. When my driver finishes running, the other processes in kernel fail to run, for example, I run ls, the command crashes the kernel with error "Corrupted page table" at a specified address. I do not know whether the page table of my driver relates to the page table of other process. How can my driver changes the page table of the other processes? And how the driver of a process relates to the kernel page table? As I know when the driver runs, it will be switched to kernel context. Kernel has its own page table and the driver has it own one. What is the relation among the kernel page table, the page table of my driver and the page table of the other processes when it runs in kernel context?

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• rdiff-backup failed due to target machine being down, but is unkillable

  - by Markus

  My backup script was invoked by cron, using rdiff-backup to backup the user files onto a target system in the network. That target computer went down at some point, yet still appeared as mounted on the server. rdiff-backup didn't do anything, but still appears as a process. kill-ing doesn't stop it. Similarly, running rdiff-backup for other directories works but doesn't exit properly and remains in the process list. Is there anything short of rebooting the server that I can try?

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• Is LSB's init script function "start_daemon" really used for real daemons or should I stick to start-stop-daemon?

  - by Fred

  In the context of init scripts, according to the LSB specification, "Each conforming init script shall execute the commands in the file /lib/lsb/init-function", which then defines a couple of functions to be used when using daemons. One of those functions is start_daemon, which obviously "runs the specified program as a daemon" while checking if the daemon is already running. I'm in the process of daemonizing a service app of mine, and I'm looking at how other daemons are run to try to "fit in". In the process of looking how it's done elsewhere, I noticed that not a single daemon on my Ubuntu 10.04 machine uses start_daemon. They all call start-stop-daemon directly. Same goes for my Fedora 14 machine. Should I try to play nice and be the first one to use start_daemon, or is there really no point and start-stop-daemon is the way to go since everybody is already using that? Why is there no daemons using LSB's functions?

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• Distributing application updates using SCCM 2007

  - by theraneman

  Hi all, If there are any System Center Config Manager (SCCM) users out there, please clarify my doubt here. I have used the ConfigMgr console to distribute a custom application to a client machine. Now I need to distribute some updated files of that application. Isnt's it possible to add those files in the same package source used earlier and advertise again? Or should I use the SCCM software update section for this? Not sure if its only me, but the Software distribution process looks much easier than the Software Updates process in SCCM 2007. Please do let me know if there any online tutorials which explain how to update a custom application. Any help much appreciated.

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• Worker processes not starting in IIS 7.5. What should I check?

  - by locster

  I have a Windows 7 machine (Windows version 6.1.7601 SP1 Build 7601) with IIS installed. At some point the installation appears to have become 'corrupted' in some way, as any requests are now met with the message: Service Unavailable HTTP Error 503. The service is unavailable. In IIS manager IIS is started and the app pool I am using reports itself as 'Started', yet there is no w3wp.exe process listed in the process list in task manager (I am a local admin and have clicked the 'Show processes from all users' button. I have enabled logging for the web site (at default location of %SystemDrive%\inetpub\logs\LogFiles), but this folder is empty. I am assuming that this log output is written by w3wp.exe as it handles requests (no w3wp.exe, no log file?). Presumably there is another layer of request handling that is responsible for starting the worker processes, does thsi layer have log files I can check, and/or can I uninstall/re-install that layer? Thanks.

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• File copying software to do this kind of work... in Windows 7 32 bit

  - by Senthil

  I need a software (Windows 7 32bit) to help me in this process: I have my documents, music, video clips, movies, pictures in my hard disk. These will not be scattered around the system. But will be inside C:\Senthil\ At the end of every week, I want to plug in an external hard disk and run a software that should make sure whatever is inside C:\Senthil\ is also present in the external disk. Files deleted from C:\Senthil\ should be deleted there, and new files should be copied etc... at the end of the process, every bit inside the source folder in my internal disk should be inside my external disk. A couple of important requirements and points: I do NOT need multiple versions or historic versions. I don't need the previous versions of my files. I only want the latest copy to be present in my "backup". Incremental backup makes sense. If files were not touched since the last backup, it need not copy. The size of my folder will run into GBs and in a year or two will go into TBs. But I will make sure the size of the external HDD is equal to or bigger than my source folder. I do not want it to run automatically because when I accidentally delete a file in my source, it will delete the one in the backup (I know this is why we have versioning facilities). I just want to be able to run it manually so that I am in control of when the backup is made and what is backed up and I should be able to pick something from the backup and restore it to the source folder in the above situation. Is there any software that will let me do exactly this? I don't want any other "smart" facility of the software to interfere with this process. I know what I want and the software can keep its smartness to itself :D The main reason I am asking this question is, I am a software developer and I can write this software myself. But I am a little constrained by time at the moment and I want to know if there is an existing program that can do this. Kindly don't worry about earthquakes or fire or snowstorms and bring up the "in case of a natural disaster your backup will also be in the damage zone and will be lost" argument because: I will have bigger things to worry about than my holiday memories. I don't think I will digitally store any life-ruining documents. This backup is only to avoid the inconvenience of obtaining a new copy of stuff that I have. Not to protect them against the end of the world. I am more worried about power surges in my area frying my system, hard disk failure, children who merrily hit Delete or teens who hit Shift + Delete or myself getting a little careless at times! In short: Is there a file/folder syncing software that listens to what I say and doesn't try to act smart? Please forgive me if I sound arrogant :)

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• How to find spyware dll launched using svchost.exe

  - by Sheen

  This weekend I found my PC was possibly infected by some virus or spyware. There is one "svchost.exe -k netsvcs" in my task manager, and it is running under my user name, rather than SYSTEM accounts. There is already another same process with same command line options under SYSTEM account. This user account svchost.exe consistently consumes 50% CPU (1 of 2 cores of my CPU). In Process Explorer, I can see it is started by explorer.exe, instead of services.exe. However, I failed to find its real service dll place in registry or disk. Does anyone know how to find this malicious program?

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• ubuntu Grub boot hangs on external usb drive

  - by schoetbi

  Hi, i just gave xubuntu another try and installed it ordinarily on a external usb harddisk. I have another harddisk installed inside the laptop that has Windows Xp on it. Now the problem: When I boot from the external drive the boot menu of Grub 2 shows up and i see all installed bootable partitions including windows. Now I select Xubuntu and wait. When the Xubuntu Logo shows up the boot process hangs. Now the funny thing. When the logo shows up I can unplug the usb drive and reconnect it real fast. Then the boot process will continue!!! Since I am a Linux newbie I would appreciate every hint that can solve this so that I can enjoy a smooth Linux boot:-) EDIT Grub version is: tobias@ubuntu:~$ grub-install -v grub-install (GRUB) 1.98+20100804-5ubuntu3 Kernel is: tobias@ubuntu:~$ uname -r 2.6.35-23-generic Xubuntu is 9.10 Thanks

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• Seeking a solution to automatically copy files from the cd-rom disk to the USB drive once it's connected.

  - by Ray Nathan

  I plan to distribute a free CD that automatically copies files to a connected usb device. This process will be done on the computers of the users that obtain the cd. The CD will contain an autorun.ini file that will instruct the computer to copy a set of files located on the cd..to a specific directory on the connected usb device. The usb drive letter is not the same on all the systems, therefore...Windows XP should automatically know the drive letter of the usb device before the copy operation begins. What would be the best way of creating a short batch file or script that I can place on the CD to execute this process? Also, please note that it is NOT feasible or recommended to include a batch file on the USB devices to sync this operation due to the explanation at the beginning of this paragraph. :) Thank You All

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• CHROOT for shell script testing

  - by Josh

  I am looking at setting up a shell script in order to properly document and automate the process I am using to setup a few servers we have. In order to test the shell script through its different stages I was thinking a CHROOT would be ideal, since I can wipe out the "virtual root" and create it on the fly. I have never used CHROOT before, however. I was just curious what are the exact steps I would need to follow to implement this process of creating a chroot (with the basic core functions that would be needed to install apache/php/etc.)? and then destroying it?

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• Is there a way to make scp run faster on a Mac OS X?

  - by paul_sns

  I'm trying to a upload a Flex generated SWF file from my Macbook (running Snow Leopard) using the command scp main.swf server.com:/ I had setup key authentication to prevent typing the user/pass every time. This process normally takes up to two minutes using my connection at home (768kbps down/300+ kbps up). The interesting part is that when I use WinSCP in my Windows XP machine, the process only takes 30 seconds max. Both my MacBook and Windows XP machine use the same internet connection. The MacBook is connected to the router via cable (which should be faster right?) while the Windows XP connects through Wifi. Let me know if you need additional information in order to diagnose the problem. Thanks!

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• Extract first page from multiple pdfs

  - by Tim Alexander

  Have got about 500 PDFs to go through and extract the first page of. They then need to go through some time consuming conversion process so was hoping to try and save some time by have a batch process to extract just the first page from the 500 pdfs and place it in a new pdf. Have had a poke around Acrobat but can find no real method of doing this for multiple files. Does anyone know any other programs or methods that this could be achieved? Free and open source are obviously more favourable :) EDIT: Have actually had some success using GhostScript to extract just one page. Am now looking at how to batch that and take the list of files and use those.

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