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• Determine $DISPLAY socket name on OS X 10.6?

  - by Nate

  I'm looking to do something that's a little odd. I'm SSH'ing from a server to a Snow Leopard client to start an X11 data display process. In other words, SSH's X11 forwarding isn't what I want. I can do: client$ echo $DISPLAY /tmp/launch-SOMETHING/org.x:0 client$ ls -l $DISPLAY srwx------ 1 myuser wheel 0 Dec 9 15:47 /tmp/launch-SOMETHING/org.x:0 And, when I do: server$ ssh myuser@client client$ export DISPLAY=/tmp/launch-SOMETHING/org.x:0 client$ xterm I happily get my xterm. What I need, then, is some way to find out the correct value for $DISPLAY in my ssh session. From what I've read, $DISPLAY is set by launchd, but I haven't found any way to see that value. If it matters, I know that when my process connects from $server to $client, $client will logged in to the terminal as the same user.

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• Should I be using the command pattern? Seems like a lot of work...

  - by Fedor

  My Room class has a lot of methods I used before I decided to use the command pattern. Previously, I was invoking a lot of commands and now it seems I have to make a method in my roomParser class for every method. If I wanted to invoke say, setHotelCode I would have to create a method in roomParser that iterates through and invokes the method. Is this the way I should be using the command pattern? <?php interface Parseable { public function parse( $arr, $dept ); } class Room implements Parseable { protected $_adults; protected $_kids; protected $_startDate; protected $_endDate; protected $_hotelCode; protected $_sessionNs; protected $_minRate; protected $_maxRate; protected $_groupCode; protected $_rateCode; protected $_promoCode; protected $_confCode; protected $_currency = 'USD'; protected $_soapAction; protected $_soapHeaders; protected $_soapServer; protected $_responseXml; protected $_requestXml; public function __construct( $startdate,$enddate,$rooms=1,$adults=2,$kids=0 ) { $this->setNamespace(SESSION_NAME); $this->verifyDates( $startdate, $enddate ); $this->_rooms= $rooms; $this->_adults= $adults; $this->_kids= $kids; $this->setSoapAction(); $this->setRates(); } public function parse( $arr, $dept ) { $this->_price = $arr * $dept * rand(); return $this; } public function setNamespace( $namespace ) { $this->_sessionNs = $namespace; } private function verifyDates( $startdate, $enddate ) {} public function setSoapAction( $str= 'CheckAvailability' ) { $this->_soapAction = $str; } public function setRates( $rates='' ) { } public function setHotelCode($code ) { $this->_hotelCode = $code; } private function getSoapHeader() { return '<?xml version="1.0" encoding="utf-8"?> <soap:Header> </soap:Header>'; } private function getSoapFooter() { return '</soap:Envelope>'; } private function getSource() { return '<POS> <Source><RequestorId ID="" ID_Context="" /></Source> </POS>'; } function requestXml() { $this->_requestXml = $this->getSoapHeader(); $this->_requestXml .='<soap:Body></soap:Body>'; return $this->_requestXml; } private function setSoapHeaders ($contentLength) { $this->_soapHeaders = array('POST /url HTTP/1.1', 'Host: '.SOAP_HOST, 'Content-Type: text/xml; charset=utf-8', 'Content-Length: '.$contentLength); } } class RoomParser extends SplObjectStorage { public function attach( Parseable $obj ) { parent::attach( $obj ); } public function parseRooms( $arr, $dept ) { for ( $this->rewind(); $this->valid(); $this->next() ) { $ret = $this->current()->parse( $arr, $dept ); echo $ret->getPrice(), PHP_EOL; } } } $arrive = '12/28/2010'; $depart = '01/02/2011'; $rooms = new RoomParser( $arrive, $depart); $rooms->attach( new Room( '12/28/2010', '01/02/2011') ); $rooms->attach( new Room( '12/29/2010', '01/04/2011') ); echo $rooms->count(), ' Rooms', PHP_EOL; Edit: I'm thinking it may be easier if I made the RoomParser less generic by storing properties that all the objects will share. Though I'll probably have to make methods if I want to override for a certain object.

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• Breaking the loop in Jython

  - by kdev

  Hi everyone, I have a written a loop for and if condition and I want to break to loop completely when if gets satisfied. while count: i=0 for line in read_record: #print str.strip(count[1:28]) #print str.strip(read_record[i]) if string.find(str.strip(read_record[i]),str.strip(count[1:28]))>0: code=str.strip(read_record[i+19])+str.strip(read_record[i+20]) print code[25:] break i=i+1 So here if the if string.find condition gets satisfied I want to go to while loop flow. Please tell me what will be the best place to break and how should I modify the program so that once the if condition is satisfied I am out of the loop and start again with while loop.

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• how to save contact in outlook from sharepoint

  - by Lalit

  Hi, I have Sharepoint site. let say it is connected to Outlook. When I will search on site for some text let say: "Manager of xyz company" definetly i Will get some data from sql content database relevant to searched query , right ? Ok I want to give "Save" Button after I found the Contact details of that manager.So is this possible to save this contact to the outlook's contact list? As I am new in sharepoint ,as per my requirement this is the flow. SO please guide me. Is this task possible ??

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• Create dropdown from multi array + PHP class

  - by chris

  Hi there, Well, I am writing class that creates a DOB selection dropdown. I am having figure out the dropdown(), it seems working but not exactly. Code just creates one drop down, and under this dropdown all day, month and year data are in one selection. like: <label> ^*DOB</label> <select name="form_bod_year"> <option value=""/> <option selected="" value="0">1</option> <option value="1">2</option> <option value="2">3</option> <option value="3">4</option> <option value="4">5</option> <option value="5">6</option> .. <option value="29">30</option> <option value="30">31</option> <option value="1">January</option> <option value="2">February</option> .. <option value="11">November</option> <option value="12">December</option> <option selected="" value="0">1910</option> <option value="1">1911</option> .. <option value="98">2008</option> <option value="99">2009</option> <option value="100">2010</option> </select> Here is my code, I wonder that why all datas are in one selection. It has to be tree selction - Day:Month:Year. //dropdown connector class DropDownConnector { var $dropDownsDatas; var $field_label; var $field_name; var $locale; function __construct($dropDownsDatas, $field_label, $field_name, $locale) { $this-dropDownsDatas = $dropDownsDatas; $this-field_label = $field_label; $this-field_name = $field_name; $this-locale = $locale; } function getValue(){ return $_POST[$this-field_name]; } function dropdown(){ $selectedVal = $this-getValue($this-field_name); foreach($this-dropDownsDatas as $keys=$values){ foreach ($values as $key=$value){ $selected = ($key == $selectedVal ? "selected" : "" ); $options .= sprintf('%s',$key,$value); }; }; return $select_start = "$this-field_desc".$options.""; } function getLabel(){ $non_req = $this-getNotRequiredData(); $req = in_array($this-field_name, $non_req) ? '' : '*'; return $this-field_label ? $req . $this-field_label : ''; } function __toString() { $id = $this-field_name; $label = $this-getLabel(); $field = $this-dropdown(); return 'field_name.'"'.$label.''.$field.''; } } function generateForm ($lang,$country_list,$states_list,$days_of_month,$month_list,$years){ $xx = array( 'form_bod_day' = $days_of_month, 'form_bod_month' = $month_list, 'form_bod_year' = $years); echo $dropDownConnector = new DropDownConnector($xx,'DOB','bod','en-US'); } // Call php class to use class on external functionss. $avInq = new formGenerator; $lang='en-US'; echo generateForm ($lang,$country_list,$states_list,$days_of_month,$month_list,$years);

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• What technologies are appropriate for a human workflow system?

  - by CCw

  I'm researching various workflow architectures and it is overwhelming. The workflow system I am creating will be almost completely human-driven. Very little, if any, asynchronous activity will be taking place. One possibility is to simply use a RDBMS and have a task table, from which stored procedures would be used to enforce synchronous access to each task. This seems very simple, but I'm having a hard time coming up with reasons why I might need to involve a heavier solution. If my system has ~500 concurrent users, and there is very little in the way of automated or asynchronous tasks, should I even consider the various workflow patterns/packages out there like Mule, BPEL/SOA, Spring Work Flow, etc?

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• In a virtual machine monitor such as VMware's ESXi Server, how are shadow page tables implemented?

  - by ali01

  My understanding is that VMMs such as VMware's ESXi Server maintain shadow page tables to map virtual page addresses of guest operating systems directly to machine (hardware) addresses. I've been told that shadow page tables are then used directly by the processor's paging hardware to allow memory access in the VM to execute without translation overhead. I would like to understand a bit more about how the shadow page table mechanism works in a VMM. Is my high level understanding above correct? What kind of data structures are used in the implementation of shadow page tables? What is the flow of control from the guest operating system all the way to the hardware? How are memory access translations made for a guest operating system before its shadow page table is populated? How is page sharing supported? Short of straight up reading the source code of an open source VMM, what resources can I look into to learn more about hardware virtualization?

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• Run preseed commands as specific user / switching users

  - by pduersteler

  Beside the usual setup where I create a normal user foo, I want to run a few d-i preseed/late_command commands as that foo user. My initial thought was to simply call those commands with sudo, e.g: d-i preseed/late_command in-target echo "<pwd>" | sudo -Si <command>. This works for some sort of commands. However the problem is that some of the commands load up shell scripts which require to not be run with sudo. Issuing a su -c "<command>" would be an alternative, but su does not offer the possibility to read the password from stdin. Is it safe to jump around between the users using su (And if yes, how do I provide the stdin? and does it work or just result in a su: must be run from a terminal) or would this cause issues?

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• UTF-8 locale portability (and ssh)

  - by kine

  I spend a lot of my time sshed into various machines, all of which are different (some are embedded, some run Linux, some run BSD, &c.). On my own local machines, however, i use OS X, which of course has a userland based on FreeBSD. My locale on those machines is set to en_GB.UTF-8, which is one of the available options: % echo `sw_vers` ProductName: Mac OS X ProductVersion: 10.8.2 BuildVersion: 12C60 % locale -a | grep -i 'en_gb.utf' en_GB.UTF-8 Several of the more-capable Linux systems i use appear to have an equivalent option, but i note that on Linux the name is slightly different: % lsb_release -d Description: Debian GNU/Linux 6.0.3 (squeeze) % locale -a | grep -i 'en_gb.utf' en_GB.utf8 This makes me wonder: When i ssh into a Linux machine from my Mac, and it forwards all of my LC_* variables with that 'UTF-8' suffix, does that Linux machine even understand what is being asked of it? Or is it just falling back to some other locale? In either case, what is the mechanism behind its behaviour, and is it dependent on any particular set-up (e.g., will i see the same behaviour on a BusyBox-based system as on a GNU-based one)?

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• Mac OS X keeps "old" environment variable around

  - by Xymak1y

  So far I had /Applications/play-1.2.5/ added to my $PATH variable. Now I'm working with 2.2.1, which I installed in /Applications/play-2.2.1 and changed in ~/.bash_profile (which is getting sourced at startup). However, when printing $PATH, 1.2.5 is somehow still around: mbp:~ user$ echo $PATH /usr/local/share/npm/bin:/Applications/play-2.2.1:/usr/local/heroku/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Applications/play-1.2.5:/Applications/XAMPP/xamppfiles/bin/:/opt/X11/bin As far as I now, I only entered $PATH variables in .bash_profile, which looks like this: mbp:~ user$ cat .bash_profile source ~/.git-completion.bash ### Added by the Heroku Toolbelt export PATH="/usr/local/heroku/bin:$PATH" ### Play Framework export PATH="/Applications/play-2.2.1:$PATH" export PATH="/usr/local/share/npm/bin:$PATH" I'm also not sure where the XAMPP extension to the variable comes from. Can I see somewhere which other files are being sourced on startup?

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• Associating logging from two or more processes

  - by Fadeproof

  I have two processes that I have up and running and I am doing logging from. One is a client the other is a webservice. I want to setup a central log system where I can track logs and interactions between processes -- for instance I want to be able to associate calls made from the client to the webservice when I look at the logs. I guess this means that somehow the processid of the client process needs to flow over to the webservice in some way for it to be trackable? Is this possible with current logging frameworks such as Enterprise Library or Log4Net? Is there anyone that has looked into something like this? Any help would be appreciated. If you have a more defining term for this please feel free to change the title of the question or tags.

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• SSIS - SharePoint to SQL without Adapter Addin?

  - by Mark

  Hey all, Im looking to Extract a SharePoint List (WSS 2.0) to a SQL(2005) Table using SQL Server Integrated Services. First off I am aware of the "adapter" that does this from http://msdn.microsoft.com/en-us/library/dd365137.aspx however I'm just wondering for compatibility purposes if it can't just be done "out of the box". There are only a limited number of "Data Flow Sources" to select as alternatives and I am unsure if any of these would be able to work in a similar way either directly to SharePoint or via SharePoints web services (e.g. http://server_name/_vti_bin/Lists.asmx) From the list of these sources it looks like the best option would be the OLE DB connector, but not sure how it would do this. Any help you have would be great, Mark

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• Oracle Forms 6i master-detail question from a painfully new newbie

  - by Murasaki

  Hello, I have a form that contains 3 blocks (block a, b, c). There is a master-detail relationship between b (detail) and c (master). Data-flow: you enter an ID in block a, which in turn populates block c and corresponding details in block b. Control goes immediately to block c. Objective: I need to be able to update details of block b. Issue: I cannot navigate to block b. Keep in Mind: --In the Property Palette Keyboard Navigable is set to "Yes" --Insert Allowed and Update Allowed are set to "Yes." If someone could respond ASAP I would really appreciate it. Thank you.

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• Using SSIS, how do you read a datetime field into a variable that is of Data Type string?

  - by Mark Kadlec

  This one has bugged me for the longest time and a great question to ask the Stackoverflow users I think. I have a rather large SSIS flow that uses a string variable to store the datetime. I would now like to dynamically read the datetime value from the database, but how would you construct the SSIS to do this? My first obvious thought would be to simply execute a SQL task to get the datetime and store it in the variable, but got the "differs from the current variable type" error. Is there a simple way to convert the database datetime into a String variable? Any help from the community would be appreciated,

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• Shell script to read value from a file and compare it to another one

  - by maneeshshetty

  I have a C program which puts one unique value inside a test file (it would be a two digit number). Now I want to run a shell script to read that number and then compare with my required number (e.g. 40). The comparison should deliver "equal to" or "greater". For example: The output of the C program is written into the file called c.txt with the value 36, and I want to compare it with the number 40. So I want that comparison to be "equal to" or "greater" and then echo the value "equal" or "greater".

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• How can you setup multiple WSGI apps on one server?

  - by Shakakai

  I'm working on a python based server product where a user can install WSGI-based python apps on their server. I can enforce any restriction on the application structure or format to make this easy. The user workflow would be: browse an app market, showing a list of WSGIpython apps select an app and choose "install" the app would be downloaded from a remote server to the user's server the http server would then have to be configured to start serving that application from the app's id, ex. a blog app with an id of "blog" at "/blog/", so all requests below /blog/ would be seen as root by the blog application. Any suggestions on how to set something like this up? Holler if my flow of consciousness lost you ;)

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• How can I modify the BAT file in this post so it will randomly select 1 background contained in a folder containing multiple backgrounds?

  - by Radical924

  Is there a way to modify the bat file from this post here: How do I set the desktop background on Windows from a script? so that it will randomly select 1 background image from a folder containing multiple images??? AND I would also like the background to randomly change to one of the backgrounds randomly contained in the same folder. If this is possible how would I modify the bat file below??? @echo off reg add "hkcu\control panel\desktop" /v wallpaper /t REG_SZ /d "" /f reg add "hkcu\control panel\desktop" /v wallpaper /t REG_SZ /d "C:\[LOCATION OF WALLPAPER HERE]" /f reg delete "hkcu\Software\Microsoft\Internet Explorer\Desktop\General" /v WallpaperStyle /f reg add "hkcu\control panel\desktop" /v WallpaperStyle /t REG_SZ /d 2 /f RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters exit Also I noticed that this bat file won't work usually (9 times out of 10)... I receive an "ERROR: The system was unable to find the specified registry key or value." I have Windows 7 64-BIT Home Premium Service Pack 1

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• Bootstrapped Ubuntu 12.04 EC2 instance. Where to find log?

  - by nocode

  So I bootstrapped a shell script to install and run a bunch of tasks. Looks like the it ran for the most part, but I added one part and that was formatting an extra EBS volume. Pretty straightforward: mkfs.ext4 /dev/xvdf mkdir –m 000 /vol01 echo “/dev/xvdf /vol01 auto noatime 0 0” | sudo tee –a /etc/fstab sudo mount /vol01 I was able to install MongoDB, NGINX and Forever. I selected to use /dev/xdvf in the AWS console and see it. The 3rd line is not in fstab either. I've searched through various logs in /var/log/ but I don't really see much indicating the execution of the bootstrap. Logs that I see and looked through: auth.log boot.log dmesg dpkg.log syslog udev

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• how to include screen's session name in hardstatus?

  - by fungusakafungus

  I use different screen sessions for different projects. Starting screen like screen -S project1. Now, I'd like to mention 'project1' in hardstatus line. Session name can be obtained from environment variable STY: STY=13539.project1. But how to get this into screen? I've tried backtick command and %` in hardstatus, but I can't seem to get it right. What I did: .screenrc: hardstatus string '%H:%`' backtick 0 30 30 echo $STY no luck, empty %`. backtick 0 30 30 sessionname still no luck, sessionname: Not found

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• Problem with Json in Jquery

  - by Davidslv

  Hi everyone, I have a small survey, but when i submit it says that the msg is null, i don't see where is my error. If you could help me i apreciate it. Thank you My Form with Jquery and Ajax Function <!DOCTYPE HTML> <hmtl lang="pt-PT"> <head> <title>Formul&aacute;rio</title> <script type="text/javascript" src="http://code.jquery.com/jquery-1.4.2.min.js"></script> </head> <body> <hr /> <h3>Formulario</h3> <script type="text/javascript" charset="utf-8"> $(function () { $('#submiter').click( function() { $.ajax({ type: "POST", url: 'validar.php', dataType: 'json', success: function(msg) { alert('Mensagem '+ msg.mensagem); }, error : function () { alert('Ocorreu um erro'); } }); }); }); </script> <form id="formulario" action="" method="post" accept-charset="utf-8"> <p>Pergunta 1</p> <label for="pergunta1">sim</label><input type="radio" id="p1" name="pergunta1" value="1" /><br /> <label for="pergunta1">n&atilde;o</label><input type="radio" id="p1" name="pergunta1" value="0" /> <br /> <p>Pergunta 2</p> <label for="pergunta2">sim</label><input type="radio" name="pergunta2" value="0" /><br /> <label for="pergunta2">n&atilde;o</label><input type="radio" name="pergunta2" value="1" /> <br /> <p>Pergunta 3</p> <label for="pergunta3">sim</label><input type="radio" name="pergunta3" value="0" /><br /> <label for="pergunta3">n&atilde;o</label><input type="radio" name="pergunta3" value="1" /> <br /> <p>Pergunta 4</p> <label for="pergunta4">sim</label><input type="radio" name="pergunta4" value="0" /><br /> <label for="pergunta4">n&atilde;o</label><input type="radio" name="pergunta4" value="1" /> <br /> <p><input type="submit" id="submiter" value="Continue &rarr;"></p> </form> </body> </html> My PHP <?php if($_POST) { $pergunta1 = $_POST['pergunta1']; $pergunta2 = $_POST['pergunta2']; $pergunta3 = $_POST['pergunta3']; $pergunta4 = $_POST['pergunta4']; $calcular = $pergunta1 + $pergunta2 + $pergunta3 + $pergunta4; $var = array ('mensagem' => $calcular); echo json_encode($var); } else { $var2 = array('mensagem' => 'sem resultado'); echo json_encode($var2); } ?>

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• Linux, C++ audio capturing (just microphone) library

  - by TheOm3ga

  I'm developing a musical game, it's like a singstar but instead of singing, you have to play the recorder. It's called oFlute, and it's still in early development stage. In the game, I capture the microphone input, then run a simple FFT analysis and compare the results to typical recorder's frequencies, thus getting the played note. At the beginning, the audio library I was using was RtAudio, but I don't remember why I switched to PortAudio, which is what I'm currently using. The problem is that, from time to time, either it crashes randomly or stops capturing, like if there were no sound coming from the microphone. My question is, what's the best option to capture microphone input on Linux? I just need to open, read, and close a flow of bytes from the microphone. I've been reading this guide, and (un)surprisingly it says: I don't think that PortAudio is very good API for Unix-like operating systems. So, what do you recommend me?

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• Floating Tables Problem Unwanted Space XHTML Strict

  - by Axel Myers

  Hi I have two floating tables side by side. One is set to float left, the other one is set to float right. The problem is when two table are floating, they both are out of flow so next table comes without any spacing. So I add a width attribute clear:both. But now it gave me a lot of unwanted space! it's height set to:0 (the div's) and nothing has changed. So what's the problem ? Website url: http://www.animetr.com/prv/

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• Connection to .mdb file fails on windows 2008 core - 32bit

  - by amritad

  Hi, I have an application where I am doing connection with .mdb file. Here are the steps we are following : Creating object for database utils inteface Calling the connect() function, to get connected to the database whose extension is .mdb file Above flow is working correct on all windows platform but not on windows server 2008 CORE 32-bit. I also checked whether the ODBC drivers are installed or not, by opening regedit. I found that all drivers specially Microsoft access driver (*.mdb) is installed. ANd I think it is by default get installed while installing OS. Is anyone aware of any thing about ODBC drivers and connectivity to the database (like .mdb) on windows 2008 CORE ( which runs only on command line and no interface)

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• Writing a filter for incoming connections

  - by Kornel Kisielewicz

  I'm using C++/boost::asio under Win7. I'm trying to "sniff" trafic over a given TCP/IP port. Hence, I'd like to listen on that port, receive messages, analyze them, but also immidately allow them to flow further, as if I never intercepted them. I want them to sink into the program that normally listens and connects on that port. Imagine a transparent proxy, but not for HTTP. I'd rather find a code-based solution, but barring that, maybe you would suggest a tool?

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• Add folder name to beginning of filename - getting multiple renames

  - by Flibble Wibble

  I've used dbenham's excellent response to the question of how to add the folder name to the beginning of a filename in a cmd script. @echo off pushd "Folder" for /d %%D in (*) do ( for %%F in ("%%~D\*") do ( for %%P in ("%%F\..") do ( ren "%%F" "%%~nxP_%%~nxF" ) ) ) popd What I'm finding is that seemingly randomly (though it probably isn't) sometimes the script will run through several child folders and rename correctly but then it gets to a folder where it gets stuck in a loop and starts adding the folder name repeatedly to the file inside. I have 90,000 files in 300 folders to rename this weekend. Any chance you can guess the cause? PS: Is there a maximum number of files that are acceptable in each folder?

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