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• ubuntu server 10 - slow and can't remove desktop environment

  - by Alex

  i'm running ubuntu server 10.10 with the desktop environment. simple page requests are taking over 5 seconds even when connecting to the server through our local network. i believe this is partially related to having the desktop environment installed, as the server worked faster (but not as fast as it should considering that it's on the local network), but tasksel fails every time (aptitude failed 100). my knowledge of networking and linux in general is limited. would really appreciate ideas on how i can troubleshoot this problem. oh also, in the system monitor, one of the processors is almost always around 100%. i doubt this is normal too....

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• Can I set up a 2nd home wireless router, with router2 connecting to the internet through a desktop which is wirelessly connected to router1?

  - by gil b.

  Hi, I apologize for the crudeness of my MSPaint drawing, but please view my diagram of what I'd like to accomplish: Proposed home network architecture Currently, all devices are connected to 1 wireless router. I would like to make my own subnet, with a box in-between my subnet and the shared wireless router, so that I can learn about IDS, traffic analysis, etc. I was also given a cisco PIX firewall to play around with, and it'd be an added bonus if I could incorporate that into my network. The reason for this proposed architecture is so that I can monitor all MY traffic, without seeing anything going on with my roommates' traffic. my MAIN Question is, is it possible to have my desktop connect to the wireless router with internet via wireless card AND share that connection via the ethernet card, hooked to wireless router 2? cable modem - wireless router - desktop pc connected wirelessly - wireless router 2 getting internet from wired connection to desktop pc - laptops connected wirelessly The PIX can be left out for now, but I'm wondering if it could eventually be incorporated? THANKS!

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• Is it normal for Java /Tomcat to keep checking for java_pid<nnnn>.hprof?

  - by Chris

  I was monitoring my JVM running Apache Tomcat 6, running on Windows, and I noticed that every 3 seconds or so the JVM process (C:\Tomcat\bin\tomcat6.exe) is polling to see whether or not C:\Tomcatcat\java_pid3748.hprof exists, where 3748 is the Windows process ID. I haven't seen write to the hprof file, just test for existence. (I'm using Sysinternals Process Monitor (procmon.exe) for this monitoring. In procmon the polling shows up as a QueryDirectory operation, which always returns Result "NO SUCH FILE".) Is this normal, or is this a potential red flag? I gather that these hprof files are generated, perhaps among other times, when you enable the -XX:+HeapDumpOnOutOfMemoryError Java flag. I haven't enabled it myself, though I guess it could be enabled somehow in the Tomcat startup scripts.

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• How to find problem with PHP XSLTProcessor when return from transformToXML is false and libxml_get_

  - by John

  I'm working on the code below to allow HTTP user agents that cannot perform XSL transformations to view the resources on my server. I'm mystified because the result of transformToXML is false, but the result of libxml_get_errors() is an empty array. As you can see, the code outputs the LibXSLT version ID and I'm getting the problem on WinVista with version 1.1.24. Is libxml_get_errors() not the right function to get the errors from the XSLTProcessor object? If you're interested in the XML documents, you can get them from http://bobberinteractive.com/index.xhtml and .../stylesheets/layout.xsl <?php //redirect browsers that can handle the source files. if (strpos ( $_SERVER ['HTTP_ACCEPT'], 'application/xhtml+xml' )) { header ( "HTTP/1.1 301 Moved Permanently" ); header ( "Location: http://" . $_SERVER ['SERVER_NAME'] . "/index.xhtml" ); header ( "Content-Type: text/text" ); echo "\nYour browser is capable of processing the <a href='/index.xhtml' site contents on its own."; die (); } //start by checking the template $baseDir = dirname ( __FILE__ ); $xslDoc = new DOMDocument (); if (! $xslDoc-load ( $baseDir . '/stylesheets/layout.xsl' )) { header ( "HTTP/1.1 500 Server Error" ); header ( "Content-Type: text/plain" ); echo "\n Can't load " . $baseDir . '/stylesheets/layout.xsl'; die (); } //resolve the requested resource (browsers that need transformation will request the resource without the suffix) $uri = $_SERVER ['REQUEST_URI']; $len = strlen ( $uri ); if (1 = $len || '/' == substr ( $uri, $len - 1 )) { $fileName = $baseDir . "/index.xhtml"; // use 'default' document if pathname ends in '/' } else { $fileName = $baseDir . (1 load ( $fileName )) { header ( "HTTP/1.1 500 Server Error" ); echo "\n Can't load " . $fileName; die (); } // now start the XSL template processing $proc = new XSLTProcessor (); $proc-importStylesheet ( $xslDoc ); $doc = $proc-transformToXML ( $xmlDoc ); if (false === $doc) { header ( "HTTP/1.1 500 Server Error" ); header ( "Content-Type: text/plain" ); echo "\n"; // HERE is where it gets strange: the value of $doc is false and libxml_get_errors returns 0 entries. display_xml_errors ( libxml_get_errors() ); die (); } header ( "Content-Type: text/html" ); echo "\n"; echo $doc; function display_xml_errors($errors) { echo count ( $errors ) . " Error(s) from LibXSLT " . LIBXSLT_DOTTED_VERSION; for($i = 0; $i level) { case LIBXML_ERR_WARNING : $return .= "Warning $error-code: "; break; case LIBXML_ERR_ERROR : $return .= "Error $error-code: "; break; case LIBXML_ERR_FATAL : $return .= "Fatal Error $error-code: "; break; } $return .= trim ( $error-message ) . "\n Line: $error-line" . "\n Column: $error-column"; if ($error-file) { $return .= "\n File: $error-file"; } echo "$return\n\n--------------------------------------------\n\n"; } }

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• configure Heartbeat on Centos Linux - error message

  - by Elad Dotan

  I installed Heartbeat on my Centos Linux and it seems to partially work..but I'm trying to monitor a service with no success. only when I reboot the main server the backup server takes over. in the logs I get : heartbeat[30476]: 2012/03/20_18:51:57 WARN: string2msg_ll: node [node1] failed authentication heartbeat[30476]: 2012/03/20_18:51:58 WARN: string2msg_ll: node [node02] failed authentication the authkeys is identical (copied from one to another). this is my ha.cf: logfile /var/log/ha-log logfacility local0 keepalive 2 deadtime 30 initdead 120 bcast eth0 udpport 694 auto_failback on node server01.com node server02.com haresources : server01.com 38.108.117.3 aim chat any idea how to fix the problem so if a service stops the other server take over Thanks! E.

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• Redhat cluster Vs Pacemaker Vs Gluster Vs Sheepdog

  - by chandank

  Changing the entire question as earlier one was very confusing. I have been exploring different clustering system to run Virtual machines on two different machines on LAN with high availability. Currently I am already using DRBD resource on two different machines on Primary/Secondary mode. In case the primary fails I manually promote the secondary to Primary and start the VM. I also explored Gluster and looks good, however, I would rather prefer clustering over Gluster (user space FS). So if anyone has idea which one would be better from ease of use prospective please I would be interested in. Moreover, sheepdog project appears good, however, could not find much documentations/Howtos. I am using Centos 6.

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• How to use Ralink RT2501/RT2573 as wifi access point in Debian Linux

  - by user60813

  Hi, I have a fit-PC server with Debian GNU/Linux (Lenny). I would like to use it as a wifi access point since my Linksys WRT54GS has become unstable. I have a USB Ralink wifi NIC. When I insert the card to USB I can see this with lsusb: Bus 001 Device 002: ID 148f:2573 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter I have tried following various HOWTOs on using wifi card as AP in Linux, however, it seems that the card cannot go into monitor mode. I believe this is because I must use a newer driver or upload non-free firmware or something like that. I have tried installed wicd, but it does not help. I bought this wifi adapter because I was told that it is one of the most common used Linux supported wifi cards that can be used as access point and a lot of other stuff. So my question is: How do I set up this USB wifi card as wireless access point in Debian Lenny?

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• My internet connection just got really slow - How can I troubleshoot it?

  - by Walden

  A few days ago my connection became really slow. I have DSL which should be 3mb down and 768k up. I'm lucky if I get 768k down and 200k up. It sucks. I called my ISP, Verizon and they did some sort of line test and told me the problem was on my end. I rebooted my modem several times, like they told me. I'm not really sure why I even bothered calling them, the guy on the other end was just reading stuff out of a notebook - pretty useless. So, I checked my network traffic in windows resource monitor, and there doesn't seem to be anything there hogging the bandwidth. What else could be slowing my connection down on my PC? on my router? Something else?

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• Ghosting context menu clicks in WinXP

  - by Swish

  Let me preface by saying I have a lot of windows open most of the time, although not resource intensive ones, just browsers, ssh sessions, a music player, FTP client, Notepad++, IM clkients, etc. Anyway, I get a lot of weird visual "ghosting" type effects. For example when right-clicking and then selecting an option from a context menu the selected item will remain in view until I right click somewhere on the desktop. Same thing happens when selecting items from the File, Edit, etc. menu in various programs. I'm assuming this is just a result of a less than high quality video card (NVIDIA GeForce FX 5200), all the other hardware in the machine is newer higher quality, that specific video card was added after the fact for multiple monitors. I have looked all over the web for solutions and have increased the number of GDI handles for Windows, reduced the hardware accelaration on the card, etc. Any suggestions other than replace the card?

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• taskmgr.exe - Wrong Volume

  - by bcasp

  The other day my girlfriend used my computer to use one of those additional resource CD's that come with text books. This particular CD worked by acting like what seemed like a web server that hosted a site that the student is supposed to use (cgi-bin, python scripts...the whole deal). Today, I opened task manager to shut down some rogue IE's and got the following in an error popup with the title taskmgr.exe - Wrong Volume and Cancel/Try Again/Continue buttons: The wrong volume is in the drive. Please insert volume DosageCalc into drive D: (FYI: DosageCalc = nursing student) Clicking Cancel or Continue lets me continue to task manager. The CD hasn't been in the drive for days and I've used it since then with no problems. Where could task manager be holding onto this reference? My guess would be the registry somewhere...but I don't even know where to begin looking.

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• Cannot validate xml doc againest a xsd schema (Cannot find the declaration of element 'replyMessage

  - by Daziplqa

  Hi Guyz, I am using the following code to validate an an XML file against a XSD schema package com.forat.xsd; import java.io.IOException; import java.net.URL; import javax.xml.XMLConstants; import javax.xml.transform.Source; import javax.xml.transform.stream.StreamSource; import javax.xml.validation.Schema; import javax.xml.validation.SchemaFactory; import javax.xml.validation.Validator; import org.xml.sax.ErrorHandler; import org.xml.sax.SAXException; import org.xml.sax.SAXParseException; public class XSDValidate { public void validate(String xmlFile, String xsd_url) { try { SchemaFactory factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI); Schema schema = factory.newSchema(new URL(xsd_url)); Validator validator = schema.newValidator(); ValidationHandler handler = new ValidationHandler(); validator.setErrorHandler(handler); validator.validate(getSource(xmlFile)); if (handler.errorsFound == true) { System.err.println("Validation Error : "+ handler.exception.getMessage()); }else { System.out.println("DONE"); } } catch (SAXException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } private Source getSource(String resource) { return new StreamSource(XSDValidate.class.getClassLoader().getResourceAsStream(resource)); } private class ValidationHandler implements ErrorHandler { private boolean errorsFound = false; private SAXParseException exception; public void error(SAXParseException exception) throws SAXException { this.errorsFound = true; this.exception = exception; } public void fatalError(SAXParseException exception) throws SAXException { this.errorsFound = true; this.exception = exception; } public void warning(SAXParseException exception) throws SAXException { } } /* * Test */ public static void main(String[] args) { new XSDValidate().validate("com/forat/xsd/reply.xml", "https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_1.53.xsd"); // return error } } As appears, It is a standard code that try to validate the following XML file: <?xml version="1.0" encoding="UTF-8"?> <replyMessage xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <merchantReferenceCode>XXXXXXXXXXXXX</merchantReferenceCode> <requestID>XXXXXXXXXXXXX</requestID> <decision>XXXXXXXXXXXXX</decision> <reasonCode>XXXXXXXXXXXXX</reasonCode> <requestToken>XXXXXXXXXXXXX </requestToken> <purchaseTotals> <currency>XXXXXXXXXXXXX</currency> </purchaseTotals> <ccAuthReply> <reasonCode>XXXXXXXXXXXXX</reasonCode> <amount>XXXXXXXXXXXXX</amount> <authorizationCode>XXXXXXXXXXXXX</authorizationCode> <avsCode>XXXXXXXXXXXXX</avsCode> <avsCodeRaw>XXXXXXXXXXXXX</avsCodeRaw> <authorizedDateTime>XXXXXXXXXXXXX</authorizedDateTime> <processorResponse>0XXXXXXXXXXXXX</processorResponse> <authRecord>XXXXXXXXXXXXX </authRecord> </ccAuthReply> </replyMessage> Against the following XSD : https://ics2wstest.ic3.com/commerce/1.x/transactionProcessor/CyberSourceTransaction_1.53.xsd The error is : Validation Error : cvc-elt.1: Cannot find the declaration of element 'replyMessage'. Could you please help me!

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• 802.11 Capture Frame

  - by ALi

  I am using wireshark in monitor mode to capture all the frame. I buffered all the QosData in order to calculate the biterate of each station on the network. I calculate the biterate but it is not an accurate value. what i need to know is when the station use the network alone and when it uses it with another station? i know if two station with different wifi card for exemple ( st1 802.11g 54 Mb/s, st2 802.11n 300 Mb/s) if st1 uses alone the line the biterate used is 28 MB/s and if st2 uses alone the network the bit rate increase to approximately 150Mb/s but if the two station use the network at the same time the st1 lost about 80% of its bit rate because of the st1 wifi card thx in advance

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• Real time mirroring between two sql server databases

  - by Matt Thrower

  Hi, I'm a c# programmer, not a DBA and I've had the (mis)fortune to be handed a database admin task. So please bear this in mind when answering this question. What I've been asked to do is to create a real time two-way mirror between two databases with a 10 Megabit connection between them. So when either changes it updates the other. This is not a standard data mirroring/failover task where one DB is the master and the other is a backup - both are live and each needs to instantly reflect changes made to the other. In my head this sounds like a tall order, one which may even be impossible - after all in a rapidly changing environment with lots of users this is going to be massively resource intensive and create locks and queues of jobs all over the place. Is it possible? If so, can anyone either give me some basic instructions and/or point me at some places to start my reading and research? Cheers, Matt

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• How to vertically split widescreen into two virtual workspaces on ubuntu/gnome?

  - by David

  My new laptop has a big 16:9 screen, and I'm finding it hard to fully utilize it during the 95% of the time that I'm not watching HD movies on it. I'd like to set it up as a kind of virtual dual screen by splitting the physical screen into two workspaces. I know I could arrange my windows manually, but I'd like to be able to maximize a window and have it only consume half the monitor, and have its pop up dialogs centered on its half-screen, that sort of thing. Is there some kind of plug in available to do this? Thanks in advance for any pointers.

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• Filtering in Cisco Unified Communications Manager using AXL programming

  - by Santhosha Kaldambe

  Hi, I want to implement a Application which gets values from CUCM resource. I am currently using the AXL snippet <firstname>FirstNameFilter</firstname><lastname>LastNameFilter</lastname> This will work as & between two filters. for example my filter is FirstNameFilter = sam* LastNameFilter = joy* this will return the entries which satisfies both the filters. But i want to filter in such a way that we need to or this filter like i need to get the users with First Name is sam* or last name = joy*. Whether anyone did such AXL programming? It will be very helpful if i get the answer for this! Thanks Santhosh

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• What options can I use in totem, xine or vlc to play on machines with limited resources?

  - by Nina

  Mplayer has some options that allow me to play it on a machine with limited resources. I can use mplayer -vo x11 -zoom -framedrop to play videos when otherwise I'd run out of memory. At least I think I'm running out of memory. I am running our of some resource for sure. -vo sets the video output driver -zoom actually I don't know what this does, but it works for me ;-) -framedrop allows mplayer to not render frames if it falls behind. Are there similar command line controls (or a defaults file) for totem, vlc or xine?

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• Patch msp into msi package

  - by Kvad

  The latest update of Windows Live Messenger is an msp added to the package. I want to patch a msp into an msi. Reference download http://wl.dlservice.microsoft.com/download/8/3/D/83D75746-DF04-45E9-8374-BD31B9419128/en/wlsetup-all.exe I extract all msi and msps from this. (To get the msp and msi's I did the following Use resource hacker to open up wlsetup-all.exe In the left hand tree browse to PACKAGE Right click PACKAGE, save PACKAGE resources Save to a new temp folder Eg. D:\temp\package.rc This will output a whole lot of .bin files These are just cab files so we need to do a mass rename “ren *.bin *.cab” Once done select all cab files and extract to a new sub folder \extracted In \extracted you will see all the msi, msp and 7z files you need) I try to apply the msp directly with no result msiexec /p messenger.msp /a messenger.msi I also try doing a admin install with nothing being extracted.

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• Disabling at application level a nic (network interface) on Windows

  - by Leandro

  How can I disable at application level a network interface? The main question is this: If I disable the nic trough wmic (win7) or devcon (XP), the "plug and play" of a wired nic doesn't work any more. For example, if the user put the cable on a disabled nic, the OS doesn't know about it. So I need to persist the enable condition but disabling the networking like a disable nic. There's some API, network configuration (routing, changing ip, changing gateway, any), .NET Framework resource (Only NetFramework 2.0) or do you can think in any workaround to do this? Suggest and ideas also will be treated as a solution. Thanks and kind regards.

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• Reducing the time between checks on a Nagios server

  - by Farooq Hussain

  Can anyone let me know how I would reduce time between Last Check Time and Next Scheduled Check on a particular service. I have a very critical task to monitor and the time between checks is currently 5 minutes, which is too long for this service. Can I reduce that time? I need this to be 1 minute or even 30 seconds. I want Nagios to check this service every 30 seconds. I currently have defined the service as follows: define service{ use local-service host_name OpenSIP,test-RTSIP service_description SIP Registration check_command check_nrpe!check_sipreg check_freshness 0 freshness_threshold 900 active_checks_enabled 1 passive_checks_enabled 1 }

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• Is my disk hot or not?

  - by adriangrigore

  I am trying to figure out the temperature of my dedicated server's harddisk. For this purpose, I've downloaded HDTune to monitor the S.M.A.R.T. Status. The problem is that the current temperature for "C2 Temperature" is 73 degrees celsius, but the little thermometer on top of the window shows 27 degrees celsius. See this screenshot: http://screencast.com/t/OGJhZGIxND Another monitoring software (Anfibia Reactor) shows similar behavior: Disk temperature is around 30 degrees, but it says that the disk is too hot. So, is my disk hot or not? Since this is a dedicated server, I can't just open the case and put a thumb on it.

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• Monitoring/logging a malfunctioning internet connection

  - by Pekka

  I have a mysterious internet connection problem: Every 15-20 minutes, the connection will become very slow, and take 2-3 minutes for anything to load. I've had a technician from the ISP over here to test the hardware, and everything is in pristine condition. They have no other explanation than a configuration error on my machine, a possibility I can exclude 90% because I'm experiencing the same problems with another machine. I will have to monitor the situation now, and I would like to run a program that logs when internet connections become slow. I thought about putting something together using at and wget. Does anybody know of some other tool for this that does this out of the box - maybe something with an adjustable request frequency, logging connection speeds etc.?

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• Which is the best opensource IT infra management s/w?

  - by karthick

  I am looking for some opensource IT infrastructure management s/w which should be able to monitor, manage servers & pc's, network devices, printers etc and it should have patch management, software inventory, user activity data etc And I am planning to have it on a linux server and it should be manageable for both linux and windows machines. I have found many while googling, but I don't know which is the best one. So anyone please suggest me, which is the best one I am looking for?.... Thanks... Your help is greatly appreciated..

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• Know which Apps to Remove From MSConfig with this Startup Applications List

  - by Mit Naik

  Just found userfull information on Internet and thought it would help all of users. This list of startup applications is a really handy resource for cleaning up msconfig entries that have overtaken old computers. It catalogs tons of different startup programs, what they do, and which ones you should delete, leave running, or decide based on the program's usefulness. It even has a nice search box so you can search through the tens of thousands of entries. Hit the link below to check it out, and if your relatives' computer is especially broken, be sure to check out our guide to fixing your relatives' terrible computer. http://www.sysinfo.org/startuplist.php Please update the list here if you got any other tools or sites which can be help full to others

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• Why does waking a PC up with a timer act differently than with the power button?

  - by Dan Rasmussen

  I have a Windows 7 machine set up as a server. It has no monitor and is only accessed through remote desktop. I set up two scheduled tasks, one to put the computer to sleep at night and another to wake it up in the morning. When it's woken up from sleep via a timer, it stays awake for only a couple minutes before going back to sleep. When woken up by pushing the power button, however, it stays awake all the way until the sleep timer. Why does my PC behave differently in these two scenarios? I have set the PC not to prompt for a user's password on wake, since I worried that the login screen might follow different power rules. I tried SmartPower Configuration but had the same problems. I can provide more details if questions are asked in the comments, but I'm not sure what's relevant.

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• Monitoring on java daemon on centos

  - by user111196

  I have a java application which I run using yasjw tool as a daemon. I need to monitor it in case it goes down I need some kind of alert or even restart it. Is there any tool can help me do this on centos environment? The results of ps -ef | grep java root 3109 1 0 Apr06 ? 00:04:35 /usr/java/jdk1.6.0_18/bin/java -Dwrapper.pidfile=/var/run/wrapper.commServer.pid -Dwrapper.service=true -Dwrapper.visible=false -jar /usr/local/yajsw-beta-10.2/wrapper.jar -c /usr/local/yajsw-beta-10.2/conf/wrapper.conf root 3132 3109 0 Apr06 ? 00:25:26 /usr/java/jdk1.6.0_18/bin/java -classpath /usr/local/yajsw-beta-10.2/./wrapperApp.jar:/usr/local -Xrs -Dwrapper.service=true -Dwrapper.console.visible=false -Dwrapper.visible=false -Dwrapper.pidfile=/var/run/wrapper.commServer.pid -Dwrapper.config=/usr/local/yajsw-beta-10.2/conf/wrapper.conf -Dwrapper.port=15003 -Dwrapper.key=4276015160565963367 -Dwrapper.teeName=4276015160565963367$1333699547154 -Dwrapper.tmpPath=/tmp org.rzo.yajsw.app.WrapperJVMMain root 23986 23945 0 16:53 pts/0 00:00:00 grep java pidof java 3132 3109

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