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• how to change port number of Apache server in windows OS

  - by jesop

  I have installed xampp control panel and Apache 2.2 on windows XP when I type http://localhost/ gives me page which says It Works! Now, I want to change the port number 80 to some other number How to change it ? in how many files does it needs to be changed ? dose it require to restart the system to change to take effect ? Note: I have changed port number in C:\xampp\apache\conf\httpd.conf in two places where it says Listen 80 and ServerName localhost:80 Pls help, thanks.

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• wave.getState() returns null

  - by RMorrisey

  When trying to call wave.getState() in my Google Wave gadget, I get back null (no state object). How can I initialize the Wave state object? I am working in the Wave Sandbox. My ModulePrefs contains the following: <Require feature="wave" /> <Require feature="rpc"/> I got the "rpc" feature from some google groups post when searching for a fix, but it doesn't seem to be any help. The gadget contains a jQuery plugin, which defines the classes I use (not shown), attaches an event handler to the link that shows up in edit mode, and sets up the callback methods with the google wave gadget initializer: $.fn.extend({ $.gork.InitPass.newButtonClick = function newButtonClick() { var jer = new $.gork.InitPass.Player('Jeremias', 12, 2); var delta = {}; delta[jer.name] = jer.serialize(); wave.getState().submitDelta(delta); }; $.gork.InitPass.modeCallback = function modeCallback() { var state = wave.getState(); var mode = wave.getMode(); $.gork.InitPass.getContainer().ipCombatState(state, (mode == wave.Mode.EDIT)); }; $.gork.InitPass.stateCallback = function stateCallback() { $.gork.InitPass.getContainer().ipCombatState( wave.getState(), (wave.getMode() == wave.Mode.EDIT)); alert('state'); }; $.gork.InitPass.init = function init() { if (wave && wave.isInWaveContainer()) { var mode = wave.getMode(); $('.gork-ip-container').ipCombatState(null, (mode == wave.Mode.EDIT)); wave.setModeCallback($.gork.InitPass.modeCallback); wave.setStateCallback($.gork.InitPass.stateCallback); } }; })(jQuery); gadgets.util.registerOnLoadHandler($.gork.InitPass.init); $(function ready() { $.gork.InitPass.getContainer().find('.gork-ip-edit .addSection a.newButton').click( $.gork.InitPass.newButtonClick); }); So there are two main pieces of functionality here: When the mode changes, ipCombatState(...) is called. This changes the visual appearance of the gadget when the user puts the gadget in Edit mode (CTRL+E), by hiding the view DIV and displaying the edit DIV. The newButtonClick callback (which is attached to the link "a.newButton" in the edit container) is supposed to add Jeremias (Nate's Shadowrun character) to the gadget state, so that he'll be appear as a table row in edit mode. I have verified that the initializer method is called, and the view/edit mode switch works just fine (except the state is null). When I click on the new button link (the link at the bottom in edit mode), and trigger the newButtonClick handler, I get an error because wave.getState() also returns null. How can I initialize the wave state so that I can work with it? The purpose of my gadget will be to keep track of combat initiative order in a Shadowrun tabletop game (4th Ed). You can test it out in Wave and see what I have so far: http://gorkwobble.herobo.com/wave/init-pass.xml The actual javascript code is externalized to: http://gorkwobble.herobo.com/wave/init-pass.js P.S. If any Shadowrun players read this, and want to hear about it when I get the gadget working, leave a comment and I'll wave you.

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• Direct DB to Web Server connection

  - by Joel Coel

  I have a database server sitting right underneath a virtual machine host server in the rack, and this vm host is primarily responsible for servers hosting a couple different web sites and app servers that all talk to databases on the other server. Right now both servers are connected to the same switch, and I'm pretty happy with the pathing. However, both servers also have an unused network port. I wondering about the potential benefits of using a short crossover or normal+auto mdix network cable to connect these two servers together directly. Is this a good idea, or would I be doing something that won't show much benefit and is just likely to trip up a future admin who's not looking for this? The biggest weakness I can see right now is that this would likely require a code change for each vm app to point to the new IP of the database server on this private little network, and if I have a problem with the virtual machine host and have to spin up it's guests elsewhere while I fix it I'll have to change this back before things will work.

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• php.ini use multiple include paths - openbasedir restriction

  - by hfidgen

  I need to allow an include path for a vhost subdomain on Plesk 10. I've edited the PHP PEAR path into /etc/php.ini as I'm happy for it to be globally available: include_path = ".:/usr/share/pear/" This works insofar as PHP is able to see the files in that directory when a script tries to include them, but I'm getting the dreaded openbasedir error: Warning: require_once() [function.require-once]: open_basedir restriction in effect. File(/usr/share/pear/xxxx.php) is not within the allowed path(s): (/var/www/vhosts/xxxx.com/subdomains/test/httpdocs/:/tmp/) Am I right in saying that the subdomain or main domain can have a vhost.conf file in which I can alter the openbasedir allowed paths? I've tried searching out solutions but I'm afraid I can't quite see one yet :)

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• Going from dev to sysadmin advice [on hold]

  - by dotnetdev

  I've seen the threads on here about transitions to/from sysadmin. My story is I am a dev (technology is irrelevant), but in learning that technology it required a lot of server infrastructure. In the last few years, I thus had to setup a lot of infrastructure (AD, DNS, SQL etc) to learn said technology. I've noticed that I've enjoyed doing sysadmin and got quite good at it, and find it even engrossing (e.g. I am amazed by how decievingly complicated AD is, under the hood). I'm now thinking of moving into IT infrastructure after about 4 years in various dev (.NET) roles. Any advice? My concern is that I don't have any experience with hardware load balancers and firewalls like F5 etc, which some jobs require. How could I compensate for that? Also, I'm rubbish with my hands, would this be a factor? (i.e. maintaining physical kit)? Thanks

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• Can KVM CPU assignment count differ from physical hosts CPU count?

  - by javano

  I have read this question. I knew already that I could for example, have a quad core machine with four guests each having two vCPUs. As they don't all be require 100% CPU usage all the time, the scheduler would handle this for me. My question is about how this relates to a fail-over or migration situation; If host1 has two dual-core CPUs, and I assign guest1 four vCPUs (so it accessed all four physical cores), what will happen if I try and migrate it to host2 which only has one dual-core CPU? Can qemu-kvm emulate more vCPUs than there are physical? Or would I have to shut down the virtual machine, change the CPU assignment, migrate it, and then boot it back up (so no live migration)? Many thanks.

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• Application to store/browse/view photos?

  - by amorfis

  I am looking for application which I can install on Ubuntu server and put my photos there. It can be by web interface, it can be by mounted samba disk. What I require: Ability to add tags to photos. Ability to move photos. I.e. if I set photos directory to /home/photos, but then I want to move all photos to e.g. /home/common/photos - I don't want to lose all the tags. I used to use FSpot and it was great, but it lacked point 2, and I lost everything :(

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• Network printer - Print direct or via shared printer on Server?

  - by NickC

  It has occurred to me that a workstation can connect to a printer in two ways: 1). Printing directly to the IP of the printer with the print driver installed locally. 2). Printing to a \Server\Printer1 share with the print queue residing on the server. Question is which way is preferred? I would assume that printing directly to a network printer rather than going through the server would be the most efficient from the point of view of network traffic. On the other hand I guess a server printer share would be easier to manage with the correct driver automatically being downloaded to the workstations. Also what about using GPP (Server2012) to install this printer on the workstations, does that require any specific way?

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• htaccess rewrite and auth conflict

  - by Michael

  I have 2 directories each with a .htaccess file: html/.htaccess - There is a rewrite in this file to send almost everything to url.php RewriteCond %{REQUEST_URI} !(exported/?|\.(php|gif|jpe?g|png|css|js|pdf|doc|xml|ico))$ RewriteRule (.*)$ /url.php [L] and html/exported/.htaccess AuthType Basic AuthName "exported" AuthUserFile "/home/siteuser/.htpasswd" require valid-user If I remove html/exported/.htaccess the rewriting works fine and the exported directory can be access. If I remove html/.htaccess the authentication works fine. However when I have both .htaccess files exported/ is being rewritten to /url.php. Any ideas how I can prevent it?

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• Why TVs are costlier than Monitor for same screen size?

  - by Vikrant Chaudhary

  Just wondering, why LCD/LED-backlit TVs cost more (almost double) than LCD/LED-backlit monitors for same screen size. Because I guess that TVs and Monitors, both use almost same technologies and both nowadays support some common connectors (HDMI/D-Sub/DVI etc). And since a Monitor has much higher resolution than a TV for that size, and they are used more closely than TVs, Monitors probably require more engineering effort. So, Monitors are supposed to be costlier than TVs, right? Ex: A ViewSonic (or any) 22"/26" monitor supports Full-HD resolution at 1080p (WSXGA+-1680×1050, WUXGA-1920×1200), while all 22"/26" HDTVs support HD-ready 720p (WXGA-1366x768) only, which is also the resolution of my Notebook's 15.6" screen.

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• Monitoring System for the cloud?

  - by Maxim Veksler

  I need a monitoring system, much like ganglia / nagios that is build for the cloud. I need it to support : Adding / removing nodes dynamically. (Node shuts down, dose not imply node failure...) Dynamic node based categorization, meaning node can identify them self as being part of group X (ganglia gets this almost right, but lacks the dynamic part...) Does not require multicast support (generally not allowed in cloud based setups) Plugins for recent cool stuff such as Hadoop, Cassandra, Mongo would be cool. More features include: External API, web interface and co. I've looked at Ganglia, munin and they both seem be almost there (but not exactly). I would also go for reasonably priced Software as Service solution. I'm currently doing research, so Suggestions are highly appreciated. Thank you, Maxim

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• Windows Malicious Software Removal Tool log says it can't do all required actions. Should I be conce

  - by Tom

  Here's what the log file c:/Windows/debug/mrt.log of my Windows 7 install says: WARNING: Security policy doesn't allow for all actions MSRT may require. ->Scan ERROR: resource process://pid:6080 (code 0x00000005 (5)) ->Scan ERROR: resource process://pid:5300 (code 0x00000057 (87)) ->Scan ERROR: resource process://pid:3512 (code 0x00000057 (87)) I use the default setup. I didn't change anything. This is the first time I checked the log file and this warning is in there from the start. Can I do something about it? Or I shouldn't be concerned, because it can do everything what's necessary anyway? Do you have this warning in your logfile?

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• (PHP) User is being forced to RE-LOGIN after trying to do something on an admin page

  - by hatorade

  I have created an admin panel for a client in PHP, which requires a login. Here is the code at the top of the admin page requiring the user to be logged in: admin.php <?php session_start(); require("_lib/session_functions.php"); require("_lib/db.php"); db_connect(); //if the user has not logged in if(!isLoggedIn()) { header('Location: login_form.php'); die(); } ?> Obviously, the if statement is what catches them and forces them to log in. Here is the code on the resulting login page: login_form.php <form name="login" action="login.php" method="post"> Username: <input type="text" name="username" /> Password: <input type="password" name="password" /> <input type="submit" value="Login" /> </form> Which posts info to this controller page: login.php <?php session_start(); //must call session_start before using any $_SESSION variables include '_lib/session_functions.php'; $username = $_POST['username']; $password = $_POST['password']; include '_lib/db.php'; db_connect(); // Connect to the DB $username = mysql_real_escape_string($username); $query = "SELECT password, salt FROM users WHERE username = '$username';"; $result = mysql_query($query); if(mysql_num_rows($result) < 1) //no such user exists { header('Location: login_form.php?login=fail'); die(); } $userData = mysql_fetch_array($result, MYSQL_ASSOC); db_disconnect(); $hash = hash('sha256', $password . $userData['salt']); if($hash != $userData['password']) //incorrect password { header('Location: login_form.php?login=fail'); die(); } else { validateUser(); //sets the session data for this user } header('Location: admin.php'); ?> and the session functions page that provides login functions contains this: session_functions.php <?php function validateUser() { session_regenerate_id (); //this is a security measure $_SESSION['valid'] = 1; $_SESSION['userid'] = $username; } function isLoggedIn() { if($_SESSION['valid']) return true; return false; } function logout() { $_SESSION = array(); //destroy all of the session variables if (ini_get("session.use_cookies")) { $params = session_get_cookie_params(); setcookie(session_name(), '', time() - 42000, $params["path"], $params["domain"], $params["secure"], $params["httponly"] ); } session_destroy(); } ?> I grabbed the sessions_functions.php code of an online tutorial, so it could be suspicious. Any ideas why the user logs in to the admin panel, tries to do something, is forced to re-login, and THEN is allowed to do stuff like normal in the admin panel?

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• Segfault with rtorrent on Debian Lenny

  - by digital

  Hi, My debian lenny server keeps segfaulting with rtorrent, it happens once every 24 hours. Libcurl has been recompiled to the latest version and it still seems to happen. I'm not the best when it comes to linux server admin but if you require more info about the system I'll try and get it for you. lib/rtorrent are 0.8.5/0.12.5 Any help would be appreciated as I'd like rtorrent up 24/7 Caught Segmentation fault, dumping stack: 0 rtorrent [0x439686] 1 rtorrent [0x43e06a] 2 /lib/libc.so.6 [0x7f73ce780f60] 3 /usr/lib/libcurl.so.4 [0x7f73d04f4431] 4 /usr/lib/libcurl.so.4 [0x7f73d04f47da] 5 /usr/lib/libcurl.so.4(curl_multi_remove_handle+0x341) [0x7f73d050acb1] 6 rtorrent [0x480221] 7 rtorrent [0x482915] 8 /usr/local/lib/libtorrent.so.11 [0x7f73d02b1f95] 9 /usr/local/lib/libtorrent.so.11 [0x7f73d02b1fea] 10 /usr/local/lib/libtorrent.so.11 [0x7f73d02b4cfc] 11 rtorrent [0x48058a] 12 rtorrent [0x439f49] 13 /lib/libc.so.6(__libc_start_main+0xe6) [0x7f73ce76d1a6] 14 rtorrent(_ZNSt8ios_base4InitD1Ev+0x71) [0x40ea99]

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• Color Calibrate Dual Monitor XP SP2

  - by Laramie

  This topic has been touched on before but not really answered. I have a dual monitor system and the colors differ wildly. I currently live Buenos Aires where color correction hardware costs premium prices. I do some graphic design, but don't require a pro-level calibration. That said, I'd like my monitors to be set as close to "true color" as possible. I've located the useful and free Monitor Calibration Wizard, but it seems to adjust the entire system internally at startup. I could use the Microsoft Color Control Panel Applet to set a different ICC or ICM profile for each monitor, but the Monitor Calibration Wizard outputs its own format for profiles.

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• When using TCP load balancing with HAProxy, does all outbound traffic flow through the LB?

  - by user122875

  I am setting up an app to be hosted using VMs(probably amazon, but that is not set in stone) which will require both HTTP load balancing and load balancing a large number(50k or so if possible) of persistant TCP connections. The amount of data is not all that high, but updates are frequent. Right now I am evaluating load balancers and am a bit confused about the architecture of HAProxy. If I use HAProxy to balance the TCP connections, will all the resulting traffic have to flow through the load balancer? If so, would another solution(such as LVS or even nginx_tcp_proxy_module) be a better fit?

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• Sending mail to local address crashes web server (sendmail)

  - by deceze

  When trying to send mail automatically from a script at example.com via PHP's mail() to [email protected], the Apache server throws an Internal Error. I believe internally it is configured to use sendmail. The message gets dropped into ~/dead.letter and the general error log reads: [Wed May 12 11:26:45 2010] [error] [client xxx.xxx.xxx.xxx] malformed header from script. Bad header=/home/example/dead.letter... S: /home/example/www/test.php Trying any other address, not @example.com, works just fine. I have googled and serverfaulted for solutions, but they all require to edit configuration files in /etc/mail and similar system places, which is not an option, since this problem occurs on a shared host in which I only have access to ~/. Does anyone have a suggestion?

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• Slow performance over network (Ubuntu)

  - by Filipe Santos

  i did setup this NodeJs TCP Server and tested it with a message flooder. Just to see how the performance of the server is. While the message throughput is great if i run the server and the message flooder on the same computer (ubuntu), the throughput dramaticaly decreases if i start the server on computer1(ubuntu1) and the message flooder on computer2(also ubuntu). Both PC are on the same network. In fact, they are directly connected to each other. I started searching the internet for reasons and i suppose i need to tune TCP on both Ubuntu-pcs but until now i haven't been successfull at all. Has anyone experienced such problems, or could someone help me out? Thanks Here the flooding code: var net=require('net') var client = net.createConnection(5000, "10.0.0.2") client.addListener("connect", function(){ for(var i = 0; i < 1000; i++) { client.write("message "); } })

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• Keyboard doesn't let me press certain keys at the same time

  - by kitchen

  I'm not sure how to word the problem other than I can't use certain keys at the same time. For example, when playing games that require you to use the arrow keys to move and jump/duck I am unable to move to the left and jump (left arrow + up arrow) at the same time. As a result, I don't play many games when I get to a point where the jumps and what not are too far. This happens with other keys as well. In FPS I am unable to hold W to move forward and hit 2 to select my secondary weapon. Some information that might help you: I am using Windows 7 64-bit I am using a Micro Innovations KB565BL keyboard How can I fix this?

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• Boot time virus scan from USB drive

  - by Tomas Sedovic

  I want to check for viruses on a computer that I suspect may be infected with malware. Its users are running an antivirus, but there's always the risk that something slips past and the way I see it, once the system is infected the antivirus is useless because the malware can hide itself from the AV. I think the best way to go (besides clean reinstall of the OS) would be to have an antivirus running at a boot time from a CD or a USB key. That way, the malware is just lying on the disk and cannot do any of its hide-and-seek stuff (provided the AV comes from an uninfected PC and all that). So, I'm looking for something that: Runs at boot time (off USB key or CD-ROM) Does not touch or require the local OS Discovers malware fairly well (like, Avast, AVG, Norton, whatever -- I think the're all the same anyway) Can handle Windows filesystems (FAT 32, NTFS, WinFS ;-) ) Comes from some sort of trusted source (no Windows Antivirus 2009) I know that this is no silver bullet (nothing is, really*), but I do have a feeling it's more likely to help than doing the scan* within the infected system.

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• Interpreting Munin graphs showing available entropy and MySQL slow queries in sync

  - by user64204

  We're experiencing performance issues on our website, and after reviewing our munin graphs, the only metrics we've found in sync are Available entropy and MySQL slow queries, with the latter influenced by our number of logged in users: Based on the wikipedia entropy page, my understanding is that entropy is the amount of randomness (here measured in bytes) that the system can use for various tasks, mainly cryptography and functions that require random input. Since the peaks in available entropy and MySQL slow queries are occurring in sync and at regular interval, that the number of MySQL slow queries is proportional to our number of Drupal users whereas the peaks in available entropy seem to be much more constant and less proportional to these 2 metrics, we're thinking available entropy is the reflect of a root cause which, combined with the traffic to our website, is causing those slow queries (and not the opposite, slow queries influencing the entropy). Accordingly: Q: What underlying problem do you think could cause regular peaks in available entropy that could have an influence on MySQL's ability to process queries?

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• issue using Postfix as authen SMTP client relay to Exchange 2010

  - by Gk

  Hi, I'm using postfix to relay mail to Exchange 2010. Here is my config: relayhost = [smtp.exchange.2010] smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/relay_passwd smtp_sasl_security_options = #smtp_sasl_mechanism_filter = ntlm (/etc/postfix/relay_passwd contains login information of some accounts on Exchange) With this configuration I can relay email to Exchange. The problem is: the message send from Postfix has header: X-MS-Exchange-Organization-AuthAs: Anonymous and the message is treated like unAuthenicated message on Exchange system (i.e when sending to distribution group require senders are authenicated, I received error: #550 5.7.1 RESOLVER.RST.AuthRequired; authentication required ##rfc822;[email protected]). I using Outlook with the same account as in Postfix and it can send without problem. The different I realized between two case is: Outlook send with NTLM auth mech, Postfix using LOGIN mech. Any idea?

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• Can't Access a file I downloaded since I don't have permissions yet I am admin?

  - by chobo2

  Hi I downloaded some file and everytime I try to copy it or move it somewhere I get these errors Windows cannot access the specified device, path , or file. You may not have the appropriate permissions to access the item. You need permission to perform this action You require permission from "user(where this is my pc name/myusername)" to make changes to this file. Yet I am an admin and it is my only account on this computer and it saying to me I need permissions to open it up from "chobo2" user yet that's the account I am logged in as. I don't get it. How do I disable this stupid message so I can access every file I want. I am using windows 7 ultimate 64bit. As far as I know I have full permissions set so I don't know why I am getting this.

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• How to protect an OS X Server from an anautorized physical connection?

  - by GJ

  Hi I have an OS X 10.6 server, which I administer via SSH and VNC (via SSH tunnel). I can't leave it at the login window since then VNC connections are refused. Therefore I currently leave it logged with my user account. Since it doesn't have a monitor attached, it doesn't go into screen saver mode, which means it doesn't require a password to retake control. This means it is very easy for anyone connecting a keyboard/mouse and monitor to take control of the system. The screen saver password protection, which I can't get to activate, unlike the system's login window, is perfectly compatible with VNC connections. How could I prevent such direct access to the server without connecting a monitor and without blocking my ability to connect with VNC? Thanks!

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• Debian date jumping, causing complete lockup

  - by artfulrobot

  I have a Debian Squeeze VM that has suddenly chosen to jump it's date forwards just over a month, which seems to confuse it no end and cause it to require a hard reset (yikes!). There is nothing unusual in the logs, except that the datestamp suddenly jumps (today back to 2005). It's happened three times, so I don't think it's to do with the leap second issue as the last one of those was in July. When it happened once I spent ages checking stuff but could not find anything, decided to forget it. But three times is becoming an issue on a production server. Edits providing information requested in comments (thanks!): I do not have control over the hypervisor, it is a hired VM. # cat /sys/devices/system/clocksource/clocksource0/current_clocksource kvm-clock # ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== +grendel.exizten 130.149.17.8 2 u 29 64 77 14.811 1.778 1.744 *panoramix.linoc 193.67.79.202 2 u 32 64 77 19.729 -0.419 1.691 +robert.elnounch 213.251.128.249 2 u 27 64 77 17.762 0.600 1.722 -janetzki.eu 83.169.43.165 3 u 31 64 77 27.214 3.575 1.638

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