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• Metacity malfunction preventing custom Gnome session from launching?

  - by QuietThud

  When I try to run Metacity in Ubuntu2D(12.04), I get the following message: alisa@ubuntu:~$ metacity Window manager warning: Screen 0 on display ":2.0" already has a window manager; try using the --replace option to replace the current window manager. I get the same message when running Compiz from the command line in 3D (it opens fine through the GUI (same thing for AWN)). I understand that these should be the default managers for the respective sessions. I'm trying to create a custom Gnome session using the following instructions: unity launcher-free session. Here is what I've put into my .session file: [GNOME Session] Name=Custom Unity2D Session RequiredComponents=gnome-settings-daemon; RequiredProviders=windowmanager;panel; DefaultProvider-windowmanager=metacity DefaultProvider-panel=unity-2d-panel FallbackSession=ubuntu-2d DesktopName=GNOME Since I'm having problems identifying my default, and the code refers to Metacity, I figured this may be relevant to my inability to load the custom session (it shows up on my login screen, but won't launch). I tried specifying Metacity as my default manager by adding exec metacity to the .xinitrc file, and I tried running metacity --replace, but neither worked. How do I determine my current default window manager, what should the default be, and how do I re-assign it? Also, please let me know if you think there may be other issues affecting my custom session. I am new to Linux, so list anything you think might be helpful. Thank you!

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• Unity scaling instantiated GameObject at Start() doesn't "keep"

  - by Shivan Dragon

  I have a very simple scenario: A box-like Prefab which is imported from Blender automatically (I have the .blend file in the Assets folder). A script that has two public GameObject fields. In one I place the above prefab, and in the other I place a terrain object (which I've created in Unity's graphical view): public Collider terrain; public GameObject aStarCellHighlightPrefab; This script is attached to the camera. The idea is to have the Blender prefab instantiated, have the terrain set as its parent, and then scale said prefab instance up. I first did it like this, in the Start() method: void Start () { cursorPositionOnTerrain = new RaycastHit(); aStarCellHighlight = (GameObject)Instantiate(aStarCellHighlightPrefab, new Vector3(300,300,300), terrain.transform.rotation); aStarCellHighlight.name = "cellHighlight"; aStarCellHighlight.transform.parent = terrain.transform; aStarCellHighlight.transform.localScale = new Vector3(100,100,100); } and first thought it didn't work. However later I noticed that it did in fact work, in the sense where the scale was applied right at the start, but then right after the prefab instance came back to its initial scale. Putting the scale code in the Update() methods fixes it in the sense where now it stays scaled all the time: void Update () { aStarCellHighlight.transform.localScale = new Vector3(100,100,100); //... } However I've noticed that when I run this code, the object is first displayed without the scale being applied, and it takes about 5-10 seconds for the scale to happen. During this time everything works fine (like input and logging, etc). The scene is very simple, it's not like it has a lot of stuff to load or anything (there's a Ray cast from the camera on to the terrain, but that seems to happen without such delays). My (2 part) question is: Why doesn't it take the scale transform when I do it at the beginning in the Start() method. Why do I have to keep scaling it in the Update() method? Why does it take so long for the scale to "apply/show up".

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• Screwed up terminal after modifying bashrc

  - by omgzor

  I ended up screwing up my terminal, while setting up Sbt for the Coursera Scala course. I can't summon gedit (or anything else) anymore. I get the following error: Command 'gedit' is available in '/usr/bin/gedit' The command could not be located because '/usr/bin' is not included in the PATH environment variable. Also, each new instance of Terminal writes these messages before any command is written: -bash: :/home/antonio/jdk7/jdk1.7.0_07/bin: No such file or directory -bash: export: `/home/antonio/Desktop/Scala/install/sbt/bin:/home/antonio/jdk7/jdk1.7.0_07/bin': not a valid identifier I recently did a manual installation of the jdk 7, which apparently works: java -version java version "1.7.0_07" Java(TM) SE Runtime Environment (build 1.7.0_07-b10) Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode) While setting up Sbt, I made the mistake of editing bashrc by writing gedit ~/.bashrc on my terminal instead of writing gedit .bashrc, I wrote the following lines at the end of the bashrc file that opened: export PATH=/PATH/TO/YOUR/jdk1.7.0-VERSION/bin:$PATH export PATH=/home/antonio/jdk7/jdk1.7.0_07/bin:$PATH What is wrong here? How can I access my bashrc file and modify it again?

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• IMAP and Folder Subscriptions

  - by tom

  Hey guys I'm trying to figure out how folder subscriptions work with IMAP Clients and, in my case, in an Exchange 2007 environment. I have managed to deduce, I think correctly, that the folder subscription settings for individuals are stored centrally on the mailbox (At least, having configured 2 profiles on thunderbird, on 2 different machines, they subscribe to the exact same folders and dont display the exact same ones). The point of this being that I have had 2 or 3 different people in the past day report to me that they are having problems subscribing to certain folders, and having certain folder subscriptions remembered (particularly sub-folders). This is across both Thunderbird 2 and 3. can anyone suggest anything? Tom

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• backing up a virtual machine

  - by ErocM

  I inquired with the support of justcloud.com telling them that I have a vmware vm that I was wondering if it could be backed up while in use. I can back up the vm once it is shut down but I was wondering if their "shadow copy" would back it up while running. This was their response: Thank you for your email. I am really very sorry but virtual machines can't be backed up for a simple reason that they are virtual, they have virtual memory, not physical memory. Please let me know if there is anything else I can help with. Kind Regards, Barry James User Experience Team www.justcloud.com These are physical files so I wasn't sure I even understood the response. Am I wrong in thinking that a vm can be backed up while in use? Does this response even make sense? I need a cheap alternative to backing up the vm off the server in case it goes down. Any suggestions?

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• Recovering OST file without profile

  - by Philippe

  We have a Microsoft Exchange Server 2007 and offer this solution to many customers. Recently, a customer had his personal Exchange server crash (which is what made him our customer). He called some technician to see if he could repair his server before calling us, but this said tech wasn't able to do anything for them. Now that all his mailbox are on our server, he would like to transfer his old emails over to the new profile, but the tech deleted all profiles on the client machines while trying to repair his Exchange server. So my customer still has the OST files but they are not related to any profiles. Is there any way to re-attach them to a profile, or to convert them into PST files that he could then import into his new profile? The only thing I found were third party software that could to the conversion, but I am wondering if Microsoft has any tools that could re-attach the OST to a new profile. I have also tried the scanpst.exe and scanost.exe to no avail. Thank you

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• What are my options with a downloaded Rackspace cloud image?

  - by schnippy

  I've got an unresponsive Rackspace slice that has defied all attempts at accessing. I created an emergency image from this and deleted it, downloading the files that compromise the image to a local source. There are a number of files / assets I would still like to recover from this server if possible but not sure exactly what I can do with the image files, if anything. Here's the files I have, for what its worth: emergency_########_######_cloudserver########.tar.gz.0 (5gb) emergency_########_######_cloudserver########.tar.gz.1 (5gb) emergency_########_######_cloudserver########.tar.gz.2 (5gb) emergency_########_######_cloudserver########.tar.gz.3 (50mb) emergency_########_######_cloudserver########.yml (25kb) Is it possible to mount this image as a drive? Are there other forensic recovery options?

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• Double Filter in Excel

  - by Joe

  I'm trying to "stack" filters in excel, so to speak. I want to filter column A to show anything greater than 30 and then I want to filter column B to show the top ten items. When I do this, however, it shows me all rows that fit both criteria (only five records). I want to first fit the criteria for column A and then filter these results to show the top ten items in column B (10 records total). I know that I could just copy the rows from my first filter to a new sheet and then filter the new worksheet, but is there any way to apply both filters so that I don't physically have to delete records this way? Thanks for your help!

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• SQL SERVER – Technical Reference Guides for Designing Mission-Critical Solutions – A Must Read

  - by pinaldave

  Yesterday I was reading architecture reference material helping my friend who was looking for material in this respect. While working together we were searching twitter, facebook and search engines to find relevant material.While searching online we end up on very interactive reference point. Once I send the same to him, he replied he may not need anything more after referencing this material. The best part of this article was it gives access to various aspect of the technology of the image map. Here is the abstract of the original article from the site: The Technical Reference Guides for Designing Mission-Critical Solutions provide planning and architecture guidance for various mission-critical workloads deployed by users. These guides reflect the knowledge gained by Microsoft while working with customers on mission-critical deployments. Each guide provides not only the key technical concepts and information helpful for design, but also “lessons learned,” best practices, and references to customer case studies. Once you click on any of the desired topic, you will see further detailed image map of the selected topic. Personally once I ended up on this site, I was there for more than 2 hours clicking through various links. Click on image to see larger image Read more here: Technical Reference Guides for Designing Mission-Critical Solutions Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL White Papers, T SQL, Technology

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• How to make use of movie events imported by imovie 09 from a DVR

  - by overboming

  I have imported about 100 clips of video from my DVR using imovie 09 and they are all saved under movie events folder, this is ok. The problem is all the movie events files are not in standard formats, they are in some 'Apple Intermediate Format' only Quicktime and iMovie recoginize and play. My problem is I simply want to give my 100 clips of video to someone using PC and this intermediate format produced by imovie is not playable or convertable by anything I have found. Now the only option for me seems to be creating a project in iMovie and drag all the clips into the project and then export these 100 clips into a single standard file, but iMovie doesn't even let me conveninent do that, I can only click at some clip, select all, drag into the project, and repeat for 100 more times, Is there a alternative way I can do so? (or use Quicktime player to convert video formats one by one). Thanks

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• Linux webserver tutorials (WordPress)

  - by HannesFostie

  Hi I will be setting up a linux webserver to host WordPress on. The problem is that although I know how to do it, I don't know how to properly do it. So I'm now looking for semi-advanced tutorials that are complete and secure above anything else. I don't really mind trying a new distro, but I prefer ubuntu/debian. I read this post: Any good resources for setting up a webserver in Linux ? But these are very limited. So far not a lot of luck finding good guides and howtos. This should probably be a community wiki but I can't seem to transform it myself. Thanks

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• Rewrite request URI based on Host header in HAProxy

  - by DorinC

  I would like to set up HAProxy to forward HTTP requests to some backend servers but I need it to also rewrite the URI part based on the Host. I've read through the doc but it seems that reqirep isn't suitable for this purpose. Any idea if this is even possible with HAProxy? Here are the details of what I'm trying to accomplish: Requests that come in on: http://www.original-domain.com/ would be balanced between: http://server1/domains/www.original-domain.com/ ... http://serverN/domains/www.original-domain.com/ The proxy should be able to handle this for any number of domains (original-domain.com can be anything, it's not limited to a fixed set of values). For this to work HAProxy would need to rewrite a request like this: GET /original-uri HTTP/1.1 Host: original-domain.com to: GET /domains/original-domain.com/original-uri HTTP/1.1 Host: serverN and forward that request to one of the internal servers.

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• windows 7 security settings for non-admins

  - by Wasi

  I was recently modifying the security settings for my drive C. I did not notice that i was logged in as a user and changed the permissions for users to "read". Later i realized that there was no admin set up on the pc (when switching user). Now with the security settings changed I can't do anything on the computer. I can only read the files that previously existed. And this applies to every drive on my computer. Now the user accounts do not have the privileges to change the permissions. How can i allow users to have full control without having admin on my pc

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• new cacti installation on ubuntu 12.04 64bit not graphing any data

  - by Dani Cela

  Hey guys i just installed cacti on a ubuntu 12.04 server and am having issues with any data showing up on my graphs. If i snmpwalk the certain OID it works. I have tailing on the cacti.log file and i see it polling the values correctly but nothing ever graphs. Is there anything i can check with regards to snmp or something in cacti that may be causing this to not work? I have already checked in my php.ini and have set the timezone, someone was mentioning that may cause issues.

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• Unmounting a zfs pool while it is shared with sharenfs

  - by Ted W.

  I have a Solaris (open indiana) system which is getting poor disk write performance. In order to enable ZIL in this version of zfs I need to add a line to /etc/system. This will not take affect until I've unmounted and remounted the zpool. The trick is that this spool is shared via nfs to about 200 other servers to host users' home directories. I can guarantee that no users will be accessing the disks during this period of maintenance but I would like to avoid having to issue an unmount for 200 systems in order to unmount the disk on the Solaris box. My question is, with sharenfs, is it necessary to have all systems disconnected before unmounting the filesystem on the host? If it's possible, how do you go about it? I've tried unmounting already, the normal way, and it reports the disk is busy. There is no lsof in Solaris and pfiles (I think that's what it was) does not show anything obviously using the mounts.

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• Bridging Network Devices with Multiple IPs

  - by Andy

  I have a small server with a single NIC that I am trying to get a bridge functioning on so that I can run KVM. On this NIC I have a couple IPs statically assigned to it: eth0 = 192.168.1.1 eth0:1 = 192.168.1.2 eth0:2 = 192.168.1.3 eth0:3 -> Assign the bridge to this I am attempting to set up a bridge using the following instructions: sudo brctl addbr br0 sudo brctl addif br0 eth0:3 sudo ifconfig br0 192.168.1.120 netmask 255.255.255.0 up sudo route add -net 192.168.1.0 netmask 255.255.255.0 br0 sudo route add default gw 192.168.1.1 br0 sudo tunctl -b -u root -t tap0 > /dev/null sudo ifconfig tap0 up sudo brctl addif br0 tap0 However, when I do the second command: sudo brctl addif br0 eth0:3 It puts the ENTIRE eth0 device into promiscuous mode. This knocks the server offline and inaccessible by anything other than locally. Is there a way to bridge JUST eth0:3 to br0 and not put the entire device into promiscuous mode?

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• NFS or GFS for LVS 10 Server Setup

  - by Michael Robinson

  Currently we have a 10 servers LVS hosting setup. The people we hired to set it up did not anything about GFS which was our preferred Central Storage File System Solution. As we have tight time constraint, we just told them to use whatever they were familiar with which is NFS. I have since done some research and it seems that NFS is not ideal for the type of high traffic site we are hoping to build. I couldn't find much info online about the signaficance differences between the 2. As we to setup all servers again right now, should we stick with NFS or find someone who knows how to setup GFS amd go with that. We need a setup that is highly reliable and scalable as we intend. As after initial setup is done, we expect high increases in traffic and load.

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• Are programmers getting lazier and less competent

  - by Skeith

  I started programming in C++ at uni and loved it. In the next term we changed to VB6 and I hated it. I could not tell what was going on, you drag a button to a form and the ide writes the code for you. While I hated the way VB functioned I cannot argue that it was faster and easier than doing the same thing in C++ so i can see why it is a popular language. Now I am not calling VB developers lazy in just saying it easier than C++ and I have noticed that a lot of newer languages are following this trend such a C#. This leads me to think that as more business want quick results more people will program like this and sooner or later there will be no such thing as what we call programming now. Future programmers will tell the computer what they want and the compiler will write the program for them like in star trek. Is this just an under informed opinion of a junior programmer or are programmers getting lazier and less competent in general? EDIT: A lot of answers say why re invent the wheel and I agree with this but when there are wheels available people are not bothering to learn how to make the wheel. I can google how to do pretty much anything in any language and half the languages do so much for you when it come to debugging they have no idea what there code does of how to fix the error. That's how I cam up with the theory that programmers are becoming lazier and less competent as no one cares how stuff works just that it does until it does not.

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• Recover from a recover partition when F11 doesn't work and windows is corrupt

  - by jherlitz

  I have someones presario V3000 laptop. It has a D drive which is the recovery partition. The user brought it to me and windows would no longer even boot up. I could only reload XP and try to find a way to recover from the recovery partition. However haven't been able to. I read, hold F11 down when booting up, but that didn't do anything, and the other item I read is to create the CDs from the software installed in the OS from the factory. Well that is the OS that went corrupt and is no longer there. A new reloaded version of XP is there now. Is there still a way I can either create recover CD's/DVD's or boot from the recovery partition?

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• Ubuntu 13.10 Installing MariaDB when Apt reports MariaDB has unmet dependencies or broken packages

  - by Ecaz

  I have tried everything to install MariaDB on this clean Ubuntu installation but I keep getting this error, Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mariadb-server : Depends: mariadb-server-5.5 (= 5.5.33a+maria-1~saucy) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I have followed this guide to try and install it, http://www.unixmen.com/install-lemp-server-nginx-mysql-mariadb-php-ubuntu-13-10-server/ And I have also followed the "official" guide on the MariaDB downloads page for 13.10 https://downloads.mariadb.org/mariadb/repositories/ But nothing seems to be working. Edit 1 I have tried both How do I resolve unmet dependencies? and How to install MariaDB? but it still gives me the error I posted above. It's a fresh Ubuntu install with hardly anything installed. Edit 2 All the check boxes are ticket in Updates. I ran: sudo apt-get update && sudo apt-get -f install mariadb-server-5.5"=5.5.33a+maria-1~saucy" And it gave me this error: The following packages have unmet dependencies: mariadb-server-5.5 : Depends: mariadb-client-5.5 (>= 5.5.33a+maria-1~saucy) but it is not going to be installed Depends: mariadb-server-core-5.5 (>= 5.5.33a+maria-1~saucy) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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• Mouse for a lefty?

  - by Kyralessa

  As a programmer, I'm fairly particular about my keyboard and mouse. One thing I've only recently noticed is that the mice I tend to prefer don't work well for my five-year-old. He's left-handed, but ends up mousing with his right hand on the computer because (a) that's where the mouse is, and (b) most mice are designed for right-handed people anyway. So, a couple of questions: If you're left-handed and you mouse with your left hand, do you have any recommendations on good mice? If you have a lefty in your household (whether or not it's you), is there an easy way to swap settings between left-handed and right-handed mouse buttons? One way is Control Panel Mouse Check the box on the first tab OK. Do you know of anything faster? Or, better yet, what I'd really like is a way to reverse those settings on only one particular mouse, which would be designated as my son's mouse.

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• Bash History not containing all history and blank after reboot, how to resolve?

  - by TryTryAgain

  I've recently upgraded from 13.04 to 13.10 and realized my terminal bash history is not surviving reboots. cat ~/.bash_history gave me a permissions denied error. I, possibly unnecessarily or wrongly, issued a chmod 777 ~/.bash_history to see if that would help...and although I could then cat and read some contents it contained not much of anything as far as history. I also tried sudo rm ~/.bash_history after reading bash history not being preserved Strangely, after doing that, I typed a few test commands, ls, ls -lah ... and upon pressing the up arrow to go back through history it contained those two commands as well as the odd history from some far off time in the past but very few results and not the hundreds of commands I typed earlier in the day. Is there a new place bash history is stored? How can removing ~/.bash_history not get rid of the commands that are somehow lingering? I am not certain, but I believe my root bash history is acting normal. My user bash history is what's causing me trouble. Any help and guidance in tracking down and solving this problem is appreciated.

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• Is it possible to format ps RSS (memory) output to be more human friendly?

  - by metasoarous

  Executing ps ux returns a nice list of process information, easy to grep through or watch. However, there doesn't seem to be much flexibility in the memory usage output; the RSS (resident set size) is printed in kB, which for large processes is hard to read (especially at a glance), and %MEM gives 100 × RSS / system_memory. The du utility has a lovely -h flag which prints space in a more user friendly fashion. I have not been able to find anything equivalent for ps. Is there a special formatting trick that can accomplish this?

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• ^C not working in zsh on Mac OSX

  - by Vitaly Kushner

  Ctrl-C stopped working for me at the terminal when using zsh (on mac osx). I didn't notice the exact moment that it happend so I can't be sure what caused it. I didd't update zsh in a while though. and didn't touch .zshrc (I have it at a repo http://github.com/astrails/dotzsh) If I run bash, ^C works in it. If I run any command, like cat, ^C will work to stop it too. but inside zsh it just doesn't do anything. bindkey | grep \\^C gives "^B"-"^C" self-insert zsh 4.3.10 (i386-apple-darwin10.4.3), installed though ports (zsh-devel @4.3.10_0+doc+examples+mp_completion+pcre) mac os 10.6.6

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• Moving from Silverlight 4 Beta to RC - Part 2

  In my previous post I talked about updating my development environment from Silverlight 4 Beta to Silverlight 4 RC (release candidate). After updating, I opened the solution for my Task-It project and found that several things were broken. I would've been surprised if it just worked as is! What disappointed me is that after spending a decent amount of time searching the web, I could not find information telling me what I needed to update/change...and wouldn't it be nice if there was a wizard to update it for you? What changed? I wish I had made notes along the line of each of the things I found, but here are a few that I can recall: In the Web project, the following dll's no longer exist: System.Web.DomainServices.dll System.Web.DomainServices.LinqToSql.dll (if you are using the Entity Framework I believe that one is System.Web.DomainServices.EntityFramework.dll) System.Web.Ria.dll In the Silverlight project: System.Windows.Ria.dll I'm not positive which new assemblies need to be referenced for your project, but I'm going to list the ones I think you need. One way to verify is to create a new Silverlight application with support for WCF RIA Services and see which dlls are included. In the Web project: System.Data.Entity.dll System.ServiceModel.DomainServices.EntityFramework.dll (I've moved from LinqToSql to EntityFramework, so I'm not sure which one the LinqToSql stuff comes from) System.ServiceModel.DomainServices.Hosting.dll System.ServiceModel.DomainServices.Server.dll In the Silverlight project: System.ServiceModel.DomainServices.Client.dll System.ServiceModel.DomainServices.Client.Web.dll System.ServiceModel.Web.Extensions.dll Where are these dll's? These all live in either the Silverlight or RIA Services subdirectories under:         C:\Program Files\Microsoft SDKs Of if you are on a 64-bit machine like me:         C:\Program Files (x86)\Microsoft SDKs Wrap up Good luck, and I hope this helps to get you back in business! If anyone finds anything that I've missed, please enter a comment and I'll update the post accordingly.Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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