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• Using PowerShell, in Active Direcotry, how would I change all the DNS A records that have a given IP to a new IP?

  - by djsumdog

  We've been moving data centers and I have a lot of old records that were not correctly but in DNS as CNAME records, but A records that have a direct IP (e.g. 192.168.100.n) and they're all moving to a new subnet (10.19.100.n). I just need to write a powershell script to change all those records. I found this site: http://www.indented.co.uk/index.php/2008/12/30/administering-microsoft-dns-in-powershell/ and from it I made this simple script: $dnsServer = "meldc2" $scope = New-Object Management.ManagementScope("\\$dnsServer\root\MicrosoftDNS") $path = New-Object Management.ManagementPath("MicrosoftDNS_Zone") $options = New-Object Management.ObjectGetOptions($Null,[System.TimeSpan]::MaxValue, $True) $ZoneClass= New-Object Management.ManagementClass($scope,$path,$options) $Zones = Get-WMIObject -Computer $dnsServer -Namespace "root\MicrosoftDNS" -Class "MicrosoftDNS_Zone" $Zones | Get-Member foreach($Z in $Zones) { $Z | Select-Object Name,DsIntegrated,ZoneType,Reverse,Data } but that only gets me a listing of root zones. I don't understand how to iterate over all the entries in each of the zones. Also, all the examples I've seen involve adding new zones, but there aren't any examples I can find on modifying existing A records.

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• Script/ Macro in Excel, by clicking on a cell

  - by Noob Doob

  There's something I want to do in Excel 2010. Specifically, I want to be able to make the open sheet load data from a text file, by clicking -important- on a cell of the current open worksheet. So my specific needs are: If it is possible in some way, to start a macro/script by clicking on a cell. About the script/macro: What would be the preferable, by your opinion, way of implementation. And more specifically, how to automatically import the data needed, only by clicking, without having to continually specify the desirable .txt file each time, only 1 time at max, at start or by using a custom "initalization/configuration" file.

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• Can you run a specific tomcat Web Application under another user?

  - by Boaz

  Hi, We're developing a web-app running under tomcat which relies on Java User preferences to store all kind of settings. That works great, but we've run into problem where we needed to set up another staging web-app which allows you to test settings before settings them live. The core of the problem lies in the fact that Java User preferences are the same for all web-app due to the fact that all of them run under the tomcat user (configurable). For legacy reasons I can not at the moment change my preferences structure, so I'm hoping for a solution on the the tomcat configuration side. Is it possible to designate a different user credentials for a specific web-app in tomcat? Thanks, Boaz

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• Generating documents with templating from a form

  - by Anna

  Hello, I would like to create a document generator with templating. The workflow should be as following: The user input data to a static form (simple text input). The user chooses a graphically designed template. A document with the chosen template containing the user data is generated. The initial templates repository is prepared in advance, but it should be easy to add new templates to the process. I have the full MS Office suite and the preferred file format is an MS .doc. I can do a little VB scripting if needed, but I prefer not to. Any advice would be greatly appreciated. Thank you, Anna

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• Tail the filename, not the file

  - by Craig Walker

  In UNIX (OS X BSD to be precise), I have a "tail -f" command on a log file. From time to time I want to delete this log file so I can more easily review it in my text editor. I delete the file, and then my program recreates it after new activity. However, my tail command (and anything else that was watching the old log file) doesn't update; it's still watching the old, deleted log file. I think I understand why this is (file names simply being pointers to blocks of file data). I'd like to know how I can work around this. Ideally, my tail command (and anything else I point to the file) would be able to read the data from the new file when the file name has been deleted and recreated. How would I do this?

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• memcached and IIS manager with windows 2008

  - by user64484

  I have memcached (c:\memcached) running on port 11211 and I have a problem configuring IIS manager I created a site in IIS manager binded to port 11211 and if I have memcached running and try and start the site it says "the process cant access the file because it is being used by another process" If I stop memcached and start the site in IIS (and enable directory browsing) I can access the directory structure http://localhost:11211 ok, if I then try and start memcached it errors with error 1053 "could not start the memcached server on local computer" I know I'm doing something fundamentally wrong here! just cannot figure out how I can use IIS and memcached together. [edit]I should add that I need other servers to be able to access memcached[/edit]

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• Latency, Ping and Other Questions

  - by Paulo Cassiano

  In a high traffic application, like an online auction system, few ms could determine 'to win or 'to lose' the 'battle'. I'm from Brazil. Here, I 'ping' local sites - like UOL - and receive replies in ~ 11ms. When I 'ping' US sites - like RackSpace - I receive replies in ~ 130 ms! The point is: I need a (very good like RackSpace [1]) infra-structure to host my killer online auction application, but there's no (RackSpace like) options in Brazil... Assuming that all users are located here, in Brazil, is it 'sine qua non' condition to host my application here, in Brazil? I think ~130 ms is a very high latency but, all users will receive this reply, sure? Well, where should I host my application? [1] Feel free to point me to any other very good host option other than RackSpace. I've cited it because I only know these guys...

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• Can not RDP to Win 2003 box or initiate remote restart

  - by Richard West

  I've got a Windows 2003 server that's at my remote data center. This morning I tried to connect to it via RDP, but the connection fails with the following error: This computer can't connect to the remote computer. Try connecting again. If the problem continues, contact the owner of the remote computer or your network administrator. I have also trying issuing a remote shutdown/restart command using the "shutdown -i" command from my local system. No error is reported, however the system does not reboot. This server runs SQL Server 2005 and it is still fully operational and responsive to queries. I can also remotely connect to the services control panel of the remote system. Is there anything that I can try to regain control of the system, short of having an operator in the data center do a hard reboot on the server for me?

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• Copying dovecot maildir to another server with courier maildir

  - by NovumCoder

  Hi all, i just moved all my mailboxes first from one server to the new one by using rsync. After that i created the folders using Thunderbird to have same folder structure like on old server. Then i copied all mail files into the folders. Now when i subscribe and click on the folder in Thunderbird it starts downloading the headers of all mails, but after finishing download nothing appears in the mail list. Its like my folder is empty and everytime i click again on the folder thunderbird starts again downloading headers. What is wrong here? I found a solution using a tool called imapsync, but its not for free, so i started doing it by copy&paste. I thought Thunderbird will be able to fix the indexes. :-( Or is there a better solution to migrate from dovecot maildir to courier maildir?

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• Tomcat 5.5 - multiple contexts using same path

  - by ctn8iv

  Is it possible to set up multiple contexts using the same path? For example: <Context docBase="/www/websites/site1/java/base" path="/base" reloadable="true"/> <Context docBase="/www/websites/site2/java/base" path="/base" reloadable="true"/> I have two sites that use the same path both running on the same server/IP. The sites use different virtual hosts and different ServerNames, but I have no control over the directory structure of the sites because they are maintained by a client. Until now, they have been content with only allowing one site to run at a time, but this is a major hassle, so I need to know if there's a workaround.

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• Cacti is not monitoring the correct host... How do I change SNMP target?

  - by wil

  I have been handed a Cacti server that monitors a few hosts. I noticed that three of the targets were displaying the exact same data - the cacti machine, machine a and machine b. After doing a bit of digging, I noticed that machine a and machine b had "Local Linux Machine" set under "Host Template". I have since changed the host template to "Generic SNMP-enabled Host", however, all the graphs still only display data from the local cacti machine (Updates every 5 minutes - I changed this yesterday - 12 hours). I can't think what else is wrong and was wondering if anyone knows/can recommend anything?

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• Using Gentoo's `ebegin`, `eend` etc under Ubuntu

  - by Marcus Downing

  We're quite fond of the style of the ebegin, eend, eerror, eindent etc commands used by Portage and other tools on Gentoo. The green-yellow-red bullets and standard layout make for very quick spotting of errors, on what would otherwise be very grey command line output. #!/bin/sh source /etc/init.d/functions.sh ebegin "Copying data" rsync .... eend $? Producing output similar to: * Copying data... [ OK ] As a result we're using these commands in some of our common shell scripts, which is a problem for the people using Ubuntu and other linuxes. (linuces? linuxen? linucae? other distros) On Gentoo these functions are provided by OpenRC, and imported with functions.sh file (whose exact position seems to vary slightly). But is there a simple way of getting these commands on Ubuntu? In theory we could replace them all with dull echos, but we'd rather not?

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• Hanging page loads every n loads - SOLVED

  - by Christian

  Hi Guys I recently moved my site to a new server (Apache 2, PHP5, MySQL5). The site is an Invision based forum. Every few posts / topics it just hangs. The data has been written because if you stop and reload, the post / thread is there. I thought it was a write issue initially, but nope. So, the data is written but the page load never completes. It doesn't leave the page where the data has been input. Whats the best way to trouble shoot this issue? The only thing I have done recently is reduce my MySQL timeouts, but I can't see that being an issue as the values are still big enough and there are no mentions of timeouts in the MySQL log. (For the record there is nothing in PHP's error log either) Thanks in advance! EDIT: I checked my server-status. It all looked ok, but I have a suspicion I was hitting my ServerLimit, so I doubled that. Also enabled my Keepalives. Will keep an eye on it. EDIT 2: Its now been a few days and this is still occuring. I have more info though; Apache is throwing seg faults, but enabling core dumps does not produce them. I have tried disabling the modules in apache but it just stops things from working. I fear it may actually be DNS related. If I watch Live Headers in Firefox, absolutely nothing happens during this 'hanging' period. After that, the responses come back fairly promptly. UPDATE (05/04): I built the latest versions of Apache and PHP from source, no luck. I then removed those and used the remi repo to update all my packages to the latest stable. Segfaults seem to have stopped, but the hanging is continuing. ini's are at; www.skylinesaustralia.com/php.ini www.skylinesaustralia.com/my.cnf www.skylinesaustralia.com/httpd.conf UPDATE - SOLVED! - The issue was having a gigantic query cache size in MySQL. It was 2GB, changing it to 64M sorted it. Thanks for all the help everybody, much appreciated!!

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• multi player client server game - polling - wamp

  - by stonebold

  Let's say I make a client-server application. A simple game for example. Where each client polls the server every half a minute. How many clients is it possible to have before it overlaods a wamp server? Basically how robust is Apache for this kind of stuff? Getting a request, aggregating data from mysql server, and then returning the data in an xml format. What solution should I use for my case? Thank you in advance.

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• Un-table a cell range in Excel 2007

  - by Joe

  In Excel 2007, if you highlight a block of cells and then "Format as Table", it doesn't just apply colors and formatting, it somehow marks those cells as being a table. Now I want to get rid of the table, but keep all the cells (i.e. keep the data). So I tried clearing the table style and formatting, but Excel still recognizes those cells as being a table. I can tell because: When I select a cell that was in the table, Excel still displays the "Table Tools / Design" tab I cannot merge cells that were in the table <- this is what's annoying me So, how do I un-table those cells? I want to keep all the cell data and formatting, but have Excel not recognize them as a table.

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• Having trouble getting startup scripts to work in Server 2003

  - by Az

  Thanks for taking the time to read this. I am having trouble getting my startup scripts to run correctly on the domain I am administering. Before anyone gets upset and says "go read xxx article from microsoft",... I have. I am simply missing something or not understanding it properly. I understand how to assign the script, what I am curious about is where exactly it should be placed in the Windows folder structure. I have been able to get them to work by creating a share folder called "scripts" and pointing to that exact unc pathname IE \servername\scripts\xxx.bat. However, I would like to do it properly, would someone please tell me where they should be placed in Win2003 server, and what the path name should be when assigning a group policy to do something that applies to computer specific properties? Your assistance is very much appreciated by a junior admin trying to learn some new tricks!

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• What is causing Error 15165 in my MSSQL Transactional Replication subscription agent?

  - by Ryan

  Microsoft SQL Server 2008 (SP1) Standard running on Windows 2008. Bidirectional transactional replication is set up between two servers. One of the subscription agents just started getting error 15164. The results of sp_helpsubscriptionerrors is: Source: MSSQL_ENG Error: 15165 Text: Could not find object '(null)' or you do not have permission. Command Id: 320 I have made sure that the SQL Server agent login has both Windows and SQL security access. Full access to the directory structure and sysadmin access to the SQL Server. What else can I do to try to troubleshoot/fix this? Thanks!

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• Need to setup VoIP for 45 users

  - by Sania

  Will a T1 Line will be sufficient to support voice and data for 45 users?

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• Set security on pattern of sub folders (Server 2003)

  - by Mark Major

  I have a folder structure similar to the one shown below these paragraphs. How do I change security on every 'Photos' folder without clicking through each individually in Windows Explorer? There are about 50 top level folders (Bob, Jim, Eva, etc, etc) which have the same layout of folders inside. I am keen for any suggestions, either scripting or GUI. I am on Windows Server 2003. Cheap/free method would be good, as the company is part of a registered charity. Ideally I would like to do this via DFS path. E.G. \\mycompany.local\Shared\Staff\Bob\ Thanks for reading. Thanks for any info. Mark Bob Review Profile Photos Jim Review Profile Photos Eva Review Profile Photos

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• VSFTPD uploaded file permissions

  - by Katafalkas

  Let me first say that there are loads of topics regarding this, and I am sure i have seen them all by now. Still non of the solutions seem to help. I installed vsftpd. created a user ftp-data. Now I need that files uploaded by user ftp-data would have 755 permissions. Solving this should be as easy as adding: local_umask=002 file_open_mode=0755 but that did not help, then I have tried a number of variations of this, still did not help. The I added: chmod_enable=YES still did not help. At the moment I think that I am missing something very simple and obvious, just cant find it. Maybe someone could help me to find what I am missing. This is my config file: anonymous_enable=NO local_enable=YES write_enable=YES local_umask=002 anon_upload_enable=NO anon_mkdir_write_enable=NO dirmessage_enable=NO xferlog_enable=YES connect_from_port_20=YES xferlog_file=/var/log/xferlog listen=YES local_root=/var/www/ftp-gallery pam_service_name=vsftpd userlist_enable=YES tcp_wrappers=YES

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• What tools can be used to monitor a web application? Beyond "doesn't 404"

  - by Freiheit

  I have an internal web application that has recently gone through a major version upgrade. I would like to monitor this application over the weekend and look for 'soft' errors. I will still need to spot check things by hand, but there are some common failure patterns that I think I can automate. Examples include data with bad formatting, blank rows in tables (indicates missing non-critical data), patterns for identifiers ("TEST" means one of my devs left a testing feed on), etc. I think there are applications out there that can be scripted to do things like: 1. log in 2. Go to $URL 3. select 3rd link in $LIST or $PATTERN 4. Check HTML from that link for $PATTERNS 5. Email report Are these goals sane? What applications/tools can help with this?

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• Building new GIS Workstation - is it worth upgrading to a workstation GPU?

  - by bsigrist

  We are currently building a machine from scratch to act as a GIS workstation. The primary software used is ESRI's ArcGIS and we are mainly working with vector data using raster data only for contextual background imagery. In the past I have built a GIS machine and used a consumer grade gaming GPU (Nvidia 9800GT) and found it to perform fine. However, I have always wondered if I would have been better off equipping it with a workstation GPU such as a Quadro series. Would a workstation GPU make a noticeable difference doing 2D GIS operations or should I save money on the build and equip it with another 9800GT?

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• Use Windows Briefcase from the command line

  - by Daniel

  I have a thumb drive on which I take many of my files with me. I would like to synchronize it with my computer automatically when I connect it. I currently have a script run every time I connect it so that I can do the many things that need to be done when it connects (check for updates to the portable applications, etc.). I want my synchronization utility to: Detect conflicts work correctly when I move files or change the folder structure tell the difference between a file that was deleted on one side and a file that was added on the other work from the command line or at least have a command that will open up a window provide a confirmation screen before doing anything The Windows Briefcase does all of these except the command line. Is there any program that does all of these, or is there a way to synchronize the briefcase from the command line?

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• Use mod_rewrite or RedirectMatch to redirect oldfile.aspx?p=blah to newfile.php, ignoring ?p=blah

  - by Dan

  I've got a site with many incoming links to the old structure (gone for years), with tonnes of URL vars that are no longer relevant, as the database mappings were changed. So, I'd like to redirect: http://www.mysite.com/oldfile.aspx?p=1&c=2 to: http://www.mysite.com/newfile.php without the query string at the end. The actual query string varies - there are hundreds of them, but since they don't match up to a particular case anymore, I want to take people to the new index page for the content they're looking for, so they can find it from there. I currently use: RedirectMatch 301 ^/oldfile\.aspx$ /newfile.php This puts the query back on the end though. Can someone let me know the voodoo recipe I need?

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• Build and migrated to software raid (mdadm) on GPT disk, now can't assemble array

  - by John H

  mdadm, gpt issues, unrecognized partitions. Simplified question: How do I get mdadm to recognize GPT partitions? I have been attempting to convert/copy my Ubuntu 11.10 OS from a single drive to software raid 1. I have done similar in the past, but in this case, I was adding in a drive that has been configured for GPT and I tried to work with that without fully looking into the implications. Currently, I have a non-booting mdadm RAID 1 array of /dev/md127 (the OS assigned that and it keeps picking up). I am booting off of live USB keys, currently System Rescue CD from sysresccd. While gdisk and parted can see all the partitions, most of the OS utilities do not, including mdadm. My main goal is just to make the raid array accessible so I can get pull the data and start fresh (without using GPT). /dev/md127 /dev/sda /dev/sda1 <- GPT type partition /dev/sda1 <- exists within the GPT part, member of md127 /dev/sda2 <- exists within the GPT part, empty /dev/sdb /dev/sdb1 <- GPT type partition /dev/sdb1 <- exists within the GPT part, member of md127 History: POINT A: The original OS was install on sda (actually /dev/sda6). I used a the Ubuntu live usb to add sdb. I got warning from fdisk about GPT so I used gdisk to create a raid partition (sdb1) and mdadm to create a raid1 mirror with a missing drive. I had many issues getting this working (including being unable to get grub to install) but I eventually got it to boot using grub on sda and /dev/md127 off of sdb. So at point A, I had copied my OS from sda6 to md127 on sdb. I then booted into a rescue mode and attempted to get a bootloader onto sdb, which failed. I then discovered my mistake: I had installed the raid onto sdb instead of sdb1, essentially overwriting the sdb1 partition. POINT B: I now had two copies of my data- one on md127/sdb, and one on sda. I destroyed data on sda and created a new GPT table on sda. I then created sda1 for the raid array, and sda2 for a scratch partition. I added sda1 into the raid array and let it rebuild. md127 now covered /dev/sdb and /dev/sda1 as fully active and synced. POINT C: I rebooted onto linux rescue again and was still able to access the raid array. I then removed /dev/sdb from the array and created /dev/sdb1 for the raid. I added sdb1 to the array and let it sync. I was able to mount and access /dev/md127 without issues. Once it completed, both /dev/sda1 and /dev/sdb1 were GPT partitions and actively syncing. POINT D (current): I rebooted again to test if the array would boot and grub failed to load. I booted off of my live thumb drive and found that I can no longer assemble the raid array. mdadm doesn't see the required partitions. -- root@freshdesk /root % uname -a Linux freshdesk 3.0.24-std251-amd64 #2 SMP Sat Mar 17 12:08:55 UTC 2012 x86_64 AMD Athlon(tm) II X4 645 Processor AuthenticAMD GNU/Linux === /proc/partitions and parted look good: root@freshdesk /root % cat /proc/partitions major minor #blocks name 7 0 301788 loop0 8 0 976762584 sda 8 1 732579840 sda1 8 2 244181703 sda2 8 16 732574584 sdb 8 17 732573543 sdb1 8 32 7876607 sdc 8 33 7873349 sdc1 (parted) print all Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 750GB 750GB ext4 2 750GB 1000GB 250GB Linux/Windows data Model: ATA SAMSUNG HD753LJ (scsi) Disk /dev/sdb: 750GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 750GB 750GB ext4 Linux RAID raid Model: SanDisk SanDisk Cruzer (scsi) Disk /dev/sdc: 8066MB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 31.7kB 8062MB 8062MB primary fat32 boot, lba === # no sda2, and I double the sdb1 is the one shown in parted root@freshdesk /root % blkid /dev/loop0: TYPE="squashfs" /dev/sda1: UUID="75dd6c2d-f0a8-4302-9da4-792cc7d72355" TYPE="ext4" /dev/sdc1: LABEL="PENDRIVE" UUID="1102-3720" TYPE="vfat" /dev/sdb1: UUID="2dd89f15-65bb-ff88-e368-bf24bd0fce41" TYPE="linux_raid_member" root@freshdesk /root % mdadm -E /dev/sda1 mdadm: No md superblock detected on /dev/sda1. # this is probably a result of me attempting to force the array up, putting superblocks on the GPT partition root@freshdesk /root % mdadm -E /dev/sdb1 /dev/sdb1: Magic : a92b4efc Version : 0.90.00 UUID : 2dd89f15:65bbff88:e368bf24:bd0fce41 Creation Time : Fri Mar 30 19:25:30 2012 Raid Level : raid1 Used Dev Size : 732568320 (698.63 GiB 750.15 GB) Array Size : 732568320 (698.63 GiB 750.15 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 127 Update Time : Sat Mar 31 12:39:38 2012 State : clean Active Devices : 1 Working Devices : 2 Failed Devices : 1 Spare Devices : 1 Checksum : a7d038b3 - correct Events : 20195 Number Major Minor RaidDevice State this 2 8 17 2 spare /dev/sdb1 0 0 8 1 0 active sync /dev/sda1 1 1 0 0 1 faulty removed 2 2 8 17 2 spare /dev/sdb1 === root@freshdesk /root % mdadm -A /dev/md127 /dev/sda1 /dev/sdb1 mdadm: no recogniseable superblock on /dev/sda1 mdadm: /dev/sda1 has no superblock - assembly aborted root@freshdesk /root % mdadm -A /dev/md127 /dev/sdb1 mdadm: cannot open device /dev/sdb1: Device or resource busy mdadm: /dev/sdb1 has no superblock - assembly aborted

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