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• create a bootable usb to automatic repair windows xp system32 files

  - by Edo Post

  Is it possible to create a script/live distro that replaces some system32 files? To explain it a bit more in details: There is a company that has multiple computers (think in 100/1000's) and they all are missing the same system32 files since the company's software removed it. The systems are distributed all over the world and are managed by "normal" people who don't have any knowledge about computers. I want to create a usb stick that i can mail to all those people which contains a script that executes when you boot the usb. this script should replace the missing system32 files without any user input is this possible, and if so how could i manage this?

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• SSH reverse tunnel to monitor and manage remote devices

  - by acid_crucifix

  I have a set a distributed set of devices running Ubuntu 12.04 that I am distributing to clients. I would like to manage them remotely. They may not have fixed IPs and potentially might be behind firewalls. What I am planning to do is have the devices (permanently connected to the net) poll a request URL and based on the response open a reverse tunnel to my server, so that I can access them via that tunnel. Most of what I read about reverse tunnel over SSH is for single use cases and very little about heavy production usage. Is there some reason for this, security issues? or stability? Any help would be much obliged.

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• How to execute a command on multiple hosts using IPv6 only?

  - by math

  First of all there is pdsh which is essentially a parallel distributed shell which may execute commands on a list of given hosts. However, I find myself in an IPv6 only problem setting. It seems that pdsh is not able to use IPv6, as I am getting error messages: pdsh -w ^hostnames my_command pdsh@myhost: gethostbyname("foobar") failed I also tried to use IPv6 addresses only, which also didn't work. So how do you run a single shell script for administrative purpose (no SGE stuff, or similar) on a bunch of hosts that is IPv6 reachable only?

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• How to open a program on particular desktop?

  - by Vi

  When I start GUI program, it's window appears appears on currently active desktop (essentially, on random desktop). How to make it to appear on the specified desktop? For example, at startup I want certain programs to be started and distributed to desktops. I've already set up config file of openbox to force some programs to always start on specific desktop. Ideally it should be like: start_on_desktop 1 gnome-terminal --tab -e program1 --tab -e program2 start_on_desktop 2 gnome-terminal --tab -e program3 --tab -e program4 start_on_desktop 3 firefox It should be able to start the same program on other desktop. Also dislike when I start program while being on desktop X then switch to desktop Y and SUDDENLY a program which should be on X appears on Y. When I start lots of programs on and switch often between desktops they end up being in chaos and I need to collect them together and redistribute sanely. Also I want the first initial gnome-terminal to be on desktop 3, but I also want subsequent gnome-terminals to be on the desktop where I pressed the keystroke (also configured in openbox) that launches gnome-terminal.

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• Limit WSUS replication to only certain product classifications

  - by MDMarra

  I have four WSUS 3.0 SP2 servers that are geographically distributed. The server at our main site (we'll call it WSUS1), is the main WSUS server. All manual and auto-approvals happen here. The other three WSUS servers are replicas of this server. Currently, we are only controlling desktop OS updates through WSUS. I would like to control server OS updates through WSUS as well. There is no need for all of these server updates to be on WSUS servers at the remote sites. The only server that would need a copy of them is WSUS1. Is there a way to keep my current infrastructure as-is and add server OS updates only to WSUS1, even though the others are set up as replicas, or will I need to configure an additional WSUS server that's not replicated?

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• How to allow simple file sharing on Windows Server 2008R2 through VPN

  - by Martin Wiboe

  We are a small, distributed company with a Windows Server 2008R2 installation. I would like to set up a way for our employees to connect securely to this server via VPN and then be able to map a network drive. I have gotten this to work somewhat by installing the Network Policy and Access Services Role on the server and using the default settings. I have also created a network share on the server. The problem is that our connectivity is sporadic (sometimes the service stops listening on the port or simply refuses to authorize correct credentials) and slow. I can always connect through VPN, but mapping is problematic. I would be grateful for the answer on how to accomplish this as well as some guidance on whether I am on the right track. Thanks in advance!

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• Virtualbox, merging snapshots and base disk

  - by Henrik

  Hi, I have a virtual machine with about 30 snapshots in branches. The current development path is 22 snapshots plus the base disk. The amount of files is seemingly having an impact now on IO and the dev laptop I'm using (don't know if it is host disk performance issues with the 140GB total size over a lot of fragments, or just the fact that it is hitting sectors distributed across a lot of files). I would like to merge the current development branch of snapshots together with the base disk, but I am unsure if the following command would produce the correct outcome. I am not able to boot this disk after the procedure completes (5-6 hours). vboxmanage clonehd "C:\VPC-Storage\.VirtualBox\Machines\CRM\Snapshots\{245b27ac-e658-470a-b978-8e62137c33b1}.vhd" "E:\crm-20100624.vhd" --format VHD --type normal Could anyone confirm if this is the correct approach or not?

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• VMWare Workstation 8, Sharing a VM without copying them to "Shared VMs location"

  - by Stebi

  I have a host computer (Win7-64) with three different harddrives. It runs several VMs which are distributed among those harddrives for a better performance. Now with VMWare Workstation 8 it is possible to "share" the VMs. I'd like to use this feature, but I have to convert the VMs to "Shared VMs". When I try this WMWare forces me to copy the VMs to one predefined folder, thus making my effort of distributing the VMs among the harddrives meaningless. Is there any possibility to keep the VMs where they are and share them anyway?

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• On Linux/Unix, does .tar.gz versus .zip matter?

  - by rwallace

  Cross-platform programs are sometimes distributed as .tar.gz for the Unix version and .zip for the Windows version. This makes sense when the contents of each must be different. If, however, the contents are going to be the same, it would be simpler to just have one download. Windows prefers .zip because that's the format it can handle out of the box. Does it matter on Unix? That is, I tried today unzipping a file on Ubuntu Linux, and it worked fine; is there any problem with this on any current Unix-like operating system, or is it okay to just provide a .zip file across the board?

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• In-house Trusted Certificate

  - by MrEdmundo

  Hi there I'm a developer looking at introducing ClickOnce deployment for an internal .NET Winforms application that will be distributed via the corporate network. Now I would like to deploy this application under the full trust model however in order for that to happen I need to sign the software with a certificate. I can do that with a "test" certificate that has no information of the publisher etc, however that means an extra step will occur on the users workstation where they will have to confirm that the software is OK. So what I want to know is. is there a way I can get my IT Infrastructure guys to create me a an "internal" certificate from the domains Certificate Authority, or do I have to go and pay for a certificate from somebody like VeriSign? Thanks

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• Best practice for administering a (hadoop) cluster

  - by Alex

  Dear all, I've recently been playing with Hadoop. I have a six node cluster up and running - with HDFS, and having run a number of MapRed jobs. So far, so good. However I'm now looking to do this more systematically and with a larger number of nodes. Our base system is Ubuntu and the current setup has been administered using apt (to install the correct java runtime) and ssh/scp (to propagate out the various conf files). This is clearly not scalable over time. Does anyone have any experience of good systems for administering (possibly slightly heterogenous: different disk sizes, different numbers of cpus on each node) hadoop clusters automagically? I would consider diskless boot - but imagine that with a large cluster, getting the cluster up and running might be bottle-necked on the machine serving the OS. Or some form of distributed debian apt to keep the machines native environment synchronised? And how do people successfully manage the conf files over a number of (potentially heterogenous) machines? Thanks very much in advance, Alex

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• How can one domain route to an always-changing pool of servers?

  - by ryeguy

  I'm sure this is an easy solution, I'm just not too familiar with how DNS works or if that's even related to this problem. If I'm running a web service on amazon ec2, distributed across many instances, how can I make it so a single domain name can be used to access the entire pool of servers, which will be changing from time to time? Since the instances may be present one second but gone the next (and vice versa), I need a way to randomly pick an active member of the cluster to route to. The updates would have to be instantaneous. Is this even possible, with dns caching and all?

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• Is Tomcat Shared Session / Cluster between two machine possible?

  - by Snorri

  I have a setup of several Tomcat servers distributed between a few servers, all running the same thing. Apache is on top of Apache and a loadbalancer in front of the Apache servers. I want to cluster the Tomcats using Shared Session to minimize downtime and user interruption while deploying apps. I know clustering works within the same server but is it possible to setup Tomcat in a way that it shares sessions between servers on different machines? = Server 1 == Apache 1 === Tomcat 1 = Server 2 == Apache 2 === Tomcat 2 When Server/Tomcat 1 would be taken down, users and their sessions would transfer over to Server/Tomcat 2 and vice versa.

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• How to open a program on particular desktop?

  - by Vi.

  When I start GUI program, it's window appears appears on currently active desktop (essentially, on random desktop). How to make it to appear on the specified desktop? For example, at startup I want certain programs to be started and distributed to desktops. I've already set up config file of openbox to force some programs to always start on specific desktop. Ideally it should be like: start_on_desktop 1 gnome-terminal --tab -e program1 --tab -e program2 start_on_desktop 2 gnome-terminal --tab -e program3 --tab -e program4 start_on_desktop 3 firefox It should be able to start the same program on other desktop. Also dislike when I start program while being on desktop X then switch to desktop Y and SUDDENLY a program which should be on X appears on Y. When I start lots of programs on and switch often between desktops they end up being in chaos and I need to collect them together and redistribute sanely. Also I want the first initial gnome-terminal to be on desktop 3, but I also want subsequent gnome-terminals to be on the desktop where I pressed the keystroke (also configured in openbox) that launches gnome-terminal.

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• On Linux/Unix, does .tar.gz versus .zip matter?

  - by rwallace

  Cross-platform programs are sometimes distributed as .tar.gz for the Unix version and .zip for the Windows version. This makes sense when the contents of each must be different. If, however, the contents are going to be the same, it would be simpler to just have one download. Windows prefers .zip because that's the format it can handle out of the box. Does it matter on Unix? That is, I tried today unzipping a file on Ubuntu Linux, and it worked fine; is there any problem with this on any current Unix-like operating system, or is it okay to just provide a .zip file across the board?

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• Finding documentation for /etc/**/*.dpkg-*

  - by intuited

  During upgrades, files with these extensions appear in /etc and its subdirectories. I gather that *.dpkg-dist contains the file that was distributed with the currently-installed version of a package, and *.dpkg-new contains the version from the version being installed, however I'd like to see the docs to be sure that I'm getting it right. Also there are occasionally other similarly named files, eg *.dpkg-original, and I'd like to be able to read up on these. I've checked /usr/share/doc/dpkg for documentation on this, and come up empty; there's no dpkg-doc package; Google doesn't have anything except unanswered questions. Can someone point me to the documentation for this aspect of debian package management?

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• Equalizing Agent and Master Nagios on state change alone

  - by punith

  We have a setup where there are distributed Nagios running on multiple sites and are equalizing their data to the main Nagios server. The problem is it sends back the data to main Nagios server no matter if there is a state change in host or service. Is it possible to configure the slave Nagios to check the service/Host every 5 sec but send back the data only if there is a state change. Currently it is implemented by Obsess Over Hosts/Service which always runs the command which will equalize. Nagios version is 3 I am no administrator but a developer so I don't know the exact jargon so please bare with me.

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• What is a realistic average time difference between servers in the same LAN?

  - by monster

  Until recently, we had at work a small cluster of about 20 small Windows servers (which have now all been virtualized). They were all configured to synchronize with the local time server. It was on an 1Gb sub-network in our own DC. I never got them to be less than about 100ms away from each other, which I consider to be an incredibly big difference. Is that a normal value? What is a realistic expectation of time difference between machines running on a 1Gb network, and all connected to the same time server, and updating frequently, say every 5 minutes? I would like to know this as setting timeouts and other parameters in a distributed application requires to take that difference into consideration.

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• Excel axis problem

  - by itid

  I am graphing the height above sea level obtained by GPS at 12 measuring stations, which are distributed along a straight line but NOT equidistantly. Excel does a nice job of creating a suitable Y axis. But, it insists on placing the 12 stations equidistantly along the X axis. Consequently, the line graph does not represent the true cross section of the terrain. It is only true at the stations themselves. Surely there must be a way that I can enter the actual distances between the stations into a column, and get Excel to read from that column and space the values accordingly? It is such a basic mapping procedure for geologists and many others. Thanks

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• DevExpress AspxGridView filter in ObjectDataSource

  - by Constantin Baciu

  Yet another problem with DevExpress AspxGridView :) The context: One Page In the Page, a custom control In the custom Control, a AspxDropDown The AspxDropDown, has a DropDownWindowTemplate In the DropDownItemTemplate, I add a GridView and a paging/sorting/filtering enabled ObjectDataSource When handling the Selecting event of the ObjectDataSource, I should set filter parameters for the datasource. There filter parameters should come from the FilterRow of the AspxGridView (preferably using the AspxGriedView.FilterExpression property). The problem: the AspxGriedView.FilterExpression property is not set to the proper values (set by the user). Did anyone find a good implementation of what I'm trying to do here? Thanks a bunch. :)

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• Error when connecting to AS400 (ISeries)

  - by Jimmy Engtröm

  I'm trying to connect to a AS400 server using the .net classes. I have added a reference to IBM.Data.DB.iSeries and I use the following code: var conn = new iDB2Connection("DataSource=111.111.111.111;UserID=xxx;Password=xxx; DataCompression=True;"); conn.Open(); But I get the following exceptions Running 64 bit: "The provider cannot run in 64-bit mode." Running 32 bit: An unexpected exception occurred. Type: System.DllNotFoundException, Message: Unable to load DLL 'cwbdc.dll': The operating system cannot run . (Exception from HRESULT: 0x800700B6). I have uninstalled the Client Access and installed it again. The cwbdc.dll does exist in the system32 and syswow64 . I have no problem connecting to the AS400 if I use odbc. I'm running a 64 bit verion of Windows 7. Any ideas? /Jimmy

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• SqlCeException: The column cannot be modified. [ Column name = id ]

  - by pek

  I am simply trying to add a single row in the database but I keep getting an exception. I created a local database and added a single table: users. It consists of two columns: "id" and "name". I only made the id primary key (not auto-increment or anything else). When I run the following code: string execPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase); string dbfile = execPath + @"\LocalDatabase.sdf"; SqlCeConnection conn = new SqlCeConnection("datasource=" + dbfile); conn.Open(); string command = "INSERT INTO users VALUES('1','pek')"; Debug.WriteLine(command); SqlCeCommand comm = conn.CreateCommand(); comm.CommandText = command; comm.ExecuteNonQuery(); I get the following Exception at "comm.ExecuteNonQuery();": SqlCeException was unhandled The column cannot be modified. [ Column name = id ] What's with the "modified" part?

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• Visual Studio 2010 and CrystalReports

  - by LukePet

  I have a dll build with target framework 3.5 that manage reports; this dll use the version 10.5.3700.0 of CrystalDecisions.CrystalReports.Engine Now, I have created a new wpf application based on .NET framework 4.0 and I added the report dll reference to project. I had to install the Crystal Reports for Visual Studio 2010 library (http://www.businessobjects.com/jump/xi/crvs2010/default.asp) to build the application without errors...now it builds success, but the report print don't work. It's generate an error when set datasource...the message is: Unknown Query Engine Error Error in File C:\DOCUME~1\oli15\IMPOST~1\Temp\MyReport {4E514D0E-FC2C-4440-9B3C-11D2CA74895A}.rpt: ... Source=Analysis Server ErrorCode=-2147482942 StackTrace: at CrystalDecisions.ReportAppServer.Controllers.DatabaseControllerClass.ReplaceConnection(Object oldConnection, Object newConnection, Object parameterFields, Object crDBOptionUseDefault) at CrystalDecisions.CrystalReports.Engine.Table.SetDataSource(Object val, Type type) at CrystalDecisions.CrystalReports.Engine.ReportDocument.SetDataSourceInternal(Object val, Type type) I think that it use a different version reference for CrystalDecisions.CrystalReports.Engine, it's possible? How can tell it to use the 10.5.3700.0 version?

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• Problems with data driven testing in MSTest

  - by severj3

  Hello, I am trying to get data driven testing to work in C# with MSTest/Selenium. Here is a sample of some of my code trying to set it up: [TestClass] public class NewTest { private ISelenium selenium; private StringBuilder verificationErrors; [DeploymentItem("GoogleTestData.xls")] [DataSource("System.Data.OleDb", "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=GoogleTestData.xls;Persist Security Info=False;Extended Properties='Excel 8.0'", "TestSearches$", DataAccessMethod.Sequential)] [TestMethod] public void GoogleTest() { selenium = new DefaultSelenium("localhost", 4444, "*iehta", http://www.google.com); selenium.Start(); verificationErrors = new StringBuilder(); var searchingTerm = TestContext.DataRow["SearchingString"].ToString(); var expectedResult = TestContext.DataRow["ExpectedTextResults"].ToString(); Here's my error: Error 3 An object reference is required for the non-static field, method, or property 'Microsoft.VisualStudio.TestTools.UnitTesting.TestContext.DataRow.get' E:\Projects\SeleniumProject\SeleniumProject\MaverickTest.cs 32 33 SeleniumProject The error is underlining the "TestContext.DataRow" part of both statements. I've really been struggling with this one, thanks!

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• Winform ListView databind

  - by Manu

  Hi, I have a Listview that uses databind. I set the DataSource property to a binding source. All works fine. The problem is that I need to have a column that is not databinded and contains only buttons that have the same handler for click event. To accomplish this I tried to add a subitem that is a button for each ListViewItem after InitializeComponent but doesn't work, nothing is displayed. Also I set the list view column type to Control. If I add elements to ListView and isn't databinded that the buttons appear. So it will be a great help for me to know if buttons could be displayed in column that is not databinded when the listview uses databinding for rest of columns. Thanks!

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