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• Shell Script Launching Child Processes

  - by Matt James

  Disclaimer: I'm totally new to shell scripting, but have quite a bit of experience in other languages like PHP and Obj-C. I'm writing my first daemon script. Here are the goals: I want it to run in the background I want it to be triggered by an init.d script that includes start/stop/restart commands I want each process in a loop to trigger its own subprocess. When the parent process kicked off by the init.d script is killed, I want the subprocesses to die as well. Essentially, I'm looking for the same kind of behavior that appears to be very common among software like apache, spamd, dovecot, etc. But, based on my research, I haven't found a single, simple answer as to how this kind of thing is achieved. Any help is greatly appreciated.

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• Can't uninstall SBS 2003 in sbs 2003 -> sbs 2008 migration

  - by ChrisMuench

  I'm trying to remove sbs from my sbs 2003 server. Also I'm logged in as Administrator. However When I start to go through the wizard it gives me the following error. You must be a member of the Domain Admins, Schema Admins, and Enterprise Admins group. I then did some research and found this (http://support.microsoft.com/kb/842694) and I came to the point where it says to delete the server from Sites and Services. However when I clicked delete it wanted me to dcpromo the box first. However I have read you have to uninstall exchange first and then dcpromo it to remove AD. Any ideas?

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• Open Source project that does SSL Inspection

  - by specs

  I've been assigned to research out and spec replacing our old and decrepit http content filtering system. There are several open source filtering packages available but I've not come across one that does SSL inspection. The new system will scale to many branches of different sizes, from say 10 users to a few hundred, so purchasing an appliance for each branch isn't desirable. When we're further along, we will do custom programming as we have a few unique needs in other aspects of filtering, so if the suggestion takes a bit of customization, it won't be a problem.

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• JQuery/JavaScript confusion with Previous and Next buttons.

  - by Anders H

  I've got some inherited JQuery code that isn't working as I'd think and I'm just not even sure what to research or look up next. The Problem: I've got a few DIVs within the HTML: a container, a "frame" and the content. If the content is longer than the frame, it's cut off using overflow:hidden and a Next - button appears. The next button works correctly. However, there's also a previous button with similar code, but it does not work as expected and just displays whenever the next button does. Whenever either button is hidden, it will not reappear again when navigating back through the "pages". When the I may be overlooking something in the code, but here it is in full. The HTML: <div id="draggable" class="ui-widget-content"> <div id="draggable-title" class="cufon">about</div> <a id="draggable-close" href="javascript:void(0);"><div class="close-img icon"></div></a> <div class="clear"></div> <div id="draggable-frame"> <div id="draggable-content"> </div> </div> <a id="prevContent" href="javascript:void(0);">&laquo; previous</a><a id="nextContent" href="javascript:void(0);">next &raquo;</a> </div> The JavaScript: $(function() { $("#draggable").draggable(); }); $(document).ready(function(){ $("#draggable-frame").scrollTop(0); $("#prevContent").click(function(){ $("#draggable-content").fadeOut("medium"); setTimeout("showPrev()", 250); if($("#draggable-frame").scrollTop()+$("#draggable-frame").height() >= $("#draggable-content").height()) { $("#prevContent").hide(); } $("#draggable-content").fadeIn("medium"); }); $("#nextContent").click(function(){ $("#draggable-content").fadeOut("medium"); setTimeout("showNext()", 250); if($("#draggable-frame").scrollTop()+$("#draggable-frame").height() >= $("#draggable-content").height()) { $("#nextContent").hide(); } $("#draggable-content").fadeIn("medium"); }); $("#draggable-close").click(function(){ $("#draggable").fadeOut("medium"); }); $("#prevContent").hide(); $("#nextContent").hide(); showContent("about"); $(".opener").click(function(){ $("#draggable-frame").scrollTop(0); $("#draggable").fadeIn("medium"); showContent($(this).attr("title")); }); }); // function showPrev() { $("#draggable-frame").scrollTop($("#draggable-frame").scrollTop() - $("#draggable-frame").height()); } // function showNext() { $("#draggable-frame").scrollTop($("#draggable-frame").scrollTop() + $("#draggable-frame").height()); } function showContent(title) { $("#draggable-title").html(title); $("#draggable-content").html($("#"+title).html()); Cufon.replace('.cufon', { fontFamily: 'cav', hover: true }); $("#nextContent").hide(); $("#prevContent").hide(); if($("#draggable-content").height() > $("#draggable-frame").height()) { $("#nextContent").show(); } if($("#draggable-content").height() > $("#draggable-frame").height()) { $("#prevContent").show(); } } Even just point me in the right direction to research would be a big help right now. Thank you.

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• Mac Parallels - Bridged network

  - by Jack

  Hey All, I am new to Apple and my task is to install VMs on a Mac server. I am trying to install 4 VMs and I want them to have separate IPs and be visible on the network as separate machines. What are my options ? My research shows me that I can use bridged network, but I have to select an adapter. I have only two network adapters, does that mean I can only have 2 VMs ? And when I configure the 2 VMS, will my actual server have internet connection ? Or does it use the Mac address ?

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• One codec to rule them all

  - by AngryHacker

  I am streaming videos in my house via Windows Media Player Streaming, which is basically DLNA. So theoretically any DLNA compliant device can pick up the stream. However, I've quickly found that this is only one part of the solution. Over the years I've accumulated a ton of video-capable devices. While all these devices can see the Windows Media Player stream, they all speak in different codecs. And frankly, I am confused by codecs. In the beginning, I thought that the codecs were defined by the filename extension they carried (e.g. avi, mp4, wmv, etc...), but after further research, it looks like the extensions are simply containers. Inside an .avi file could reside several different codecs. So my question is this: is there a format/codec that plays equally well on any device.

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• Logging Apparently Not Working - Can't Set Configure Replication

  - by square_eyes

  I'm using a tutorial to set up a master (single) slave setup. When I run the command show master status; I get Empty set (0.00 sec). I have done a lot of research and believe that the log file I have set up isn't being used properly. The master is a Windows server, and I am administering it through workbench. The log file (log-bin.log) I have configured in the options exists, and is accessible by 'System'. But when I open it as a text file it doesn't have any data. So I'm assuming it's not getting used properly. How can I get the logging happening so I can finish setting up this replication? Edit: Purely for reference here is the tutorial. I followed all the steps and double checked everything up until show master status.

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• How does fail2ban 0.9 database storage actually works?

  - by Arantir

  Fail2ban 0.9 introduce database storage to save bans on restart. But I can't find out the actual mechanism of it work. There is dbpurgeage parameter which controls lifetime of old bans, defaults to 24 hours. As I see from code research, fail2ban saves a ban to the db with timeofban equals to the moment of ban being saved. Then every dbpurgeage period it removes all bans with timeofban < MyTime.time() - self._purgeAge, in other words removes all bans have been stored more than 24 hours ago. But what if an IP was banned for the month? Does all this mean that with dbpurgeage = 86400 after restart in 24 hours I will lost all bans longer than 24 hours? I just want that all my permanent bans will be preserved in any case.

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• Survey of project-administration experience [on hold]

  - by Salvador Beltrán

  My name is Salvador, I'm a Computer System Eng. Student and I'm searching for people to contribute with my research and I need real opinions - Experience (is an investigation for problems in the Project Management Area), just to be clear it can be any kind of project. If you help me with these 3 questions I would appreciate you so much! :) 1 - Any kind of problem that ocurred during the process of the project administration(Just the description). 2 - What was the impact? 3 - And what was the solution to avoid this problem in some future. 4 - What do you do(Software Engineering,Networking,etc). Thank you very much!

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• Are Motherboards for the Acer Aspire One AOA150 Netbook Compatible with the AOA110?

  - by Mindstormscreator

  I have an Acer Aspire One ZG5 AOA110-1588 netbook, and the motherboard doesn't have a port for a SATA 2.5 inch hard drive; it only supports this slow 8GB SSD type drive. Through research I've discovered that the AOA150 motherboards do have a SATA slot, and the bottom plate of these laptops have an appropriate protrusion for the drive to fit in (for example, compare this to this). The AOA110 and AOA150 models are very similar in appearance and specs. I've even seen tutorials that involve soldering a SATA connector onto the AOA110's motherboard, essentially creating an AOA150 motherboard (right?) So, could I just swap out the motherboard in my netbook with the MBS0506001? (I'd post another link to the actual board but can't because of the spam prevention...) I assume I would also need to purchase and replace the bottom cover with a larger one and possibly get a hard drive caddy as well...? Thanks!

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• Mutli-processor workstation as a workstation/server

  - by posdef

  I work in a research institute and a number of programs we use are computationally intensive (I actually wrote one of them). Right now we have one computer that is dedicated for one of these programs (with local accounts only, as in users physically sitting in front of that pc) and the other programs are run on individual workstations assigned to people. I have been looking around to common brands such as Dell and HP, for a some sort of a small/medium scale server, which can be used as a workhorse by sending tasks remotely. It appears as if there is nothing in between workstations with one 6-core processor and a bunch of extras (like fancy graphics etc) and rack mount servers with ridiculous amount of RAM and HDD expansion capabilities but still relatively little number of processors/cores. I wonder if what I am looking for is such a small niche product? Are there other solutions that I might not be aware of? Does anyone know of a multi proc- multi-core workstation/server that is still within the reasonable

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• Windows Server 2012 and Ubuntu 12.04.1 under Hyper-V

  - by Technicolour

  I've set up an instance of Ubuntu 12.04.1 LTS under Hyper-V 2012. However it seems to be nondeterministic as to whether or not it completes the boot process. I get a Kernel Panic, "IO-APIC + timer doesn't work!", which from my research is caused by not having integration services correctly installed? It was my understanding that the integration services were all now baked into the kernel? It should then be fine to update the OS (including any kernel updates, as I'm guessing that's what has happened) Being able to rely on this successfully booting would be great as I intend on using ssh for crisis situations.

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• Changing memory allocator to Jemalloc Centos 6

  - by Brian Lovett

  After reading this blog post about the impact of memory allocators like jemalloc on highly threaded applications, I wanted to test things on a larger scale on some of our cluster of servers. We run sphinx, and apache using threads, and on 24 core machines. Installing jemalloc was simple enough. We are running Centos 6, so yum install jemalloc jemalloc-devel did the trick. My question is, how do we change everything on the system over to using jemalloc instead of the default malloc built into Centos. Research pointed me at this as a potential option: LD_PRELOAD=$LD_PRELOAD:/usr/lib64/libjemalloc.so.1 Would this be sufficient to get everything using jemalloc?

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• What are the consequences of giving an AD domain differing NetBIOS and DNS names?

  - by Newt

  In the past, when creating AD domains, I've used the common convention of using a sub-domain of the company's publicly registered domain name, e.g "corp.mycompany.com" or "int.mycompany.com". I've always accepted the default NetBIOS name when running DCPromo, for fear that creating a NetBIOS name that differs from the sub-domain may cause complications. I've recently been doing a bit of research on the consequences of providing an alternate NetBIOS name. The main reasons behind this are: The NetBIOS name isn't particularly descriptive or unique to the company Apparently generic NetBIOS names such as "CORP" or "INT" can cause issues when merging IT systems (although I've not had experience with this myself) Providing something "before the slash" that means more to users (less important) In looking at the possible downsides, the only one I can come up with is the disjointed namespace issue when configuring Exchange. Can anybody with more experience than I elaborate on my findings at all? Many thanks

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• How to safely remove a device blocked by the System process with a handle on \$Extend\$RmMetadata\$Txf

  - by Heinzi

  I have an external HDD which I would like to "safely remove". Unfortunately, my system (Windows 7 x64) complains that "the device is currently in use". Using Process Explorer I discovered which process is holding a handle on the device: Obviously, System is not a process that I can just kill and be done with it. I've done a bit of research and this seems to be a common problem, but no solution has been found so far (except for rebooting the machine, which I'd like to avoid if possible). Is there any solution to this problem that I've missed?

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• best practice with memcache/php - multi memcache nodes

  - by user62835

  So I am working on a web app - that has to be built for scalability. It stores frequent MySQL querys into the cache. I have pretty much everything built and ready to go - but I am concerned on best practices on handling where to cache the data. I've talked to a few people and one of them suggested to split each key/value across all the memcache nodes. Meaning if i store the example: 'somekey','this is the value' it will be split across lets say 3 memcache servers. Is that a better way? or is memcache more built on a 1 to 1 relationship?. For example. store value on server A till it faults out - go to server B and store there. that is my current understanding from the research I have done and past experience working with memcache. Could someone please point me in the right direction in this and let me know which way is best or if I completely have this mixxed up. Thanks

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• Flash Player Automatic Updater on Windows Startup

  - by Mikee

  Hi all, Adobe Flash Player is set to automatically check for updates on Windows startup. I've always wondered where exactly it is set to do this. Checking the running services, as well as msconfig does not yield its location. The message in question looks like this: http://www.technipages.com/disable-an-update-to-your-adobe-flash-player-is-available-message-forever.html I know how to disable it via Adobe's web site (instructions are included in link above), but I'm interested in knowing where exactly in Windows is this set to perform this action? I have done some research on this, and people keep saying to check the following registry locations: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce or the HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run However, I have checked those locations, and I still cannot locate where this updater is stored. I'm pretty sure that malware also uses this technique to automatically load upon startup, and since it's not in the typical location(s) that a user would look, it's well hidden. Thank you for the assistance!

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• .vob to h.264 MP4 Files - Worth The Effort?

  - by harper89

  When I was doing the converting to digital format a while back I chose .VOB due to no quality loss. However recently I have been informed of this h.264 compression method. Time is not an issue here, I don't mind waiting for conversions etc. I also understand that any sort of compression will reduce quality. To test I converted a 4GB .VOB to a .mp4 using h264 in handbrake and the quality loss was very very very hard to notice. From what I have understood through research Space = .mp4(h.264) Quality = .Vob Playback = Both equally supported? But these concerns have yet to be answered: My comparison was done on a computer monitor, would the quality loss be substantially noticable if I purchased a 50 inch TV in the future? Is this type of file highly supported? (I don't want to experience incompatible players) What other issues could a conversion of files such as this cause in the future?

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• On boot firmware request for intel GMA 3100 chipset timing out

  - by Yannick M.

  I am currently in the process of installing a Gentoo linux box with a Vanilla 2.6.29-r5 kernel with gentoo-xen-kernel patches in order to run the Xen Hypervisor. After rebooting with the new kernel, the booting process seemed to hang on: [ 0.863005] platform microcode: firmware: requesting intel-ucode/06-0f-07 [ 60.863442] Microcode Update Driver: v2.00-xen <[email protected]>, Peter Oruba Apparently the firmware request times out after 60 seconds (/sys/class/firmware/timeout) and booting just continues. I have done some research and have found that on RHEL-4 this problem was related to the mount of /sys changed and the firmware.agent hotplug script couldn't parse the line correctly. However I am having some difficulty tracking down how to fix this on Gentoo. Any and all ideas are greatly appreciated! Thanks

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• What resources are best for staying current about information security?

  - by dr.pooter

  What types of sites do you visit, on a regular basis, to stay current on information security issues? Some examples from my list include: http://isc.sans.org/ http://www.kaspersky.com/viruswatch3 http://www.schneier.com/blog/ http://blog.fireeye.com/research/ As well as following the security heavyweights on twitter. I'm curious to hear what resources you recommend for daily monitoring. Anything specific to particular operating systems or other software. Are mailing lists still considered valuable. My goal would be to trim the cruft of all the things I'm currently subscribed to and focus on the essentials.

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• Lost HDD partition to clean command, testdisk unresponsive

  - by Sujay Anjankar

  I accidentally cleaned my external HDD by the clean command in Diskpart and got a full sized heart attack after that. I did some research and I have tried a number of tools already. To name a few: Testdisk Recuva Partition Find and mount Eassos Recovery I have even tried some other dumb sounding tools, but none of them could find the lost partition. They just show "no partition found". Testdisk shows Partition sector doesn't have the endmark 0xAA55. The file recovery softwares list the files, but none of them seem to be able to restore the lost partition. I need to recover the disk as it was. Any help would be much appreciated!

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• Using MythTV to Stream Satellite Signal to multiple users

  - by Ammar

  I'm planning on setting up a small media center to achieve the following: I have multiple users who want to watch satellite channels I want them to be able to change the channel remotely I'm going to buy an external DVB to capture the signal Use some software to stream the channel that is selected I want to have 2 different channels at the same time, I assume I will need two DVB cards Users use VLC or Windows Media Player or whatever to view the channels How can I achieve this? I heard MythTV can do it? I tried to do some research I couldn't find enough information. Note: There's no copyright issue here. I'm streaming Free-To-Air (FTA) channels.

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• Redirecting wildcard emails to one email with postfix

  - by Burning the Codeigniter

  I'm creating a bounce email system where emails can reply to messages on my site. However when the emails are sent to the user containing the previous message, the Reply-To field contains an email something like this [email protected] (which contains the ID at the end). If the user replies, the reply message will be sent back to [email protected] which of course, doesn't have its own mailbox, except the [email protected]. How would I redirect all incoming messages coming from a specific wildcard notification-message-*@mysite.com to [email protected]? I did some research, but no solid part worked, including the luser_relay = [email protected] and putting notification-message-* in the postfix aliases table, the notification@ has a Maildir, so the emails would go into it. I am using Ubuntu 11.04.

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• Smartcards for storing gpg/ssh keys (Linux) - what do I need?

  - by Ninefingers

  Hi All, I'm interested in storing my SSH keys and gpg keys on a smartcard for added security. However, I'm a bit uncertain on a few points, which are as follows: How many keys can I get on a card? I assume both SSH and GPG can store keys on the card. Is there a limit to key size? I see a lot of cards saying they support 2048-bit keys, what about larger sizes? Hardware: can anyone recommend a card/reader combination that works well? I've done a fair amount of research and it seems PC/SC readers can be a bit iffy - is this your experience? Have I missed anything I should be asking? Are there any other hurdles? I'm aware fsf europe give away cards with membership - I'm not sure I want to join, but... are these cards any good?

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• Ubuntu 9.0.4 Presario S4000NX Fan Speed

  - by Chris C

  I recently install Ubuntu 9.0.4 on a Presario S4000NX and the CPU fan speed is kept at max. With Windows XP installed the fan speed would increase/decrease as required. I've tried to install lm-sensors and run the sensors-detect. It recommended that I load the modules which I did: smsc47m192 i2c-i801 When running sensor-detect it gave me this strange message: Trying family SMSC Found SMSC LPC47M15x/192/997 Super IO Fan Sensors (but not activated) Running the sensors command gives me a list of voltages and CPU and temperature but doesn't list any fans. After doing some Internet research I then tried to load the smsc47m1 module but I get the following error: FATAL: Error inserting smsc47m1 (/lib/modules/2.6.28-15-generic/kernel/drivers/hwmon/smsc47m1.ko): no such device The file smsc47m1.ko does exist in the listed folder. Any suggestions for getting the fan speed (and the noise) down in Ubuntu? Thanx. - Chris P.S. - I would have put better tags but Server Fault wouldn't let me.

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