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  • Make a live USB of your installed ubuntu

    - by Eray Tuncer
    Okay let me clear my point. Lets assume I want to make a internet cafe-like system. Every user will be able to enter via only one user account to linux. However, I do not want them to leave anything behind. Whenever this ubuntu is booted, I want to this system remove their garbage. Why I mentioned the live USB is that I have seen that live usb or cd makes what I want but not exactly because I want to install some apps on it and make some confugration like firewall, permissions.

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  • How do I set command line mode vga=788 permanently?

    - by George
    I have a problem that is not of easy resolution, happen to tell... I have Installed Ubuntu 10.10 Server. I want to join to the system way vga=788, into the grub it changes without any problem editing the file grub.cfg, the problem is that editing the above mentioned file I join to the system way vga=788 (800x600) and then command line puts itself in way vga=792 (1280x1024). Is there any way of changing this configuration so that it is always vga=788? tanks. sorry for my english :D

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  • BoundingBox Intersection Problems

    - by Deukalion
    When I try to render two cubes, same sizes, one beside the other. With the same proportions (XYZ). My problem is, why do a Box1.BoundingBox.Contains(Box2.BoundingBox) == ContaintmentType.Intersects - when it clearly doesn't? I'm trying to place objects with BoundingBoxes as "intersection" checking, but this simple example clearly shows that this doesn't work. Why is that? I also try checking height of the next object to be placed, by checking intersection, adding each boxes height += (Max.Y - Min.Y) to a Height value, so when I add a new Box it has a height value. This works, but sometimes due to strange behavior it adds extra values when there isn't anything there. This is an example of what I mean: BoundingBox box1 = GetBoundaries(new Vector3(0, 0, 0), new Vector3(128, 64, 128)); BoundingBox box2 = GetBoundaries(new Vector3(128, 0, 0), new Vector3(128, 64, 128)); if (box1.Contains(box2) == ContainmentType.Intersects) { // This will be executed System.Windows.Forms.MessageBox.Show("Intersects = True"); } if (box1.Contains(box2) == ContainmentType.Disjoint) { System.Windows.Forms.MessageBox.Show("Disjoint = True"); } if (box1.Contains(box2) == ContainmentType.Contains) { System.Windows.Forms.MessageBox.Show("Contains = True"); } Test Method: public BoundingBox GetBoundaries(Vector3 position, Vector3 size) { Vector3[] vertices = new Vector3[8]; vertices[0] = position + new Vector3(-0.5f, 0.5f, -0.5f) * size; vertices[1] = position + new Vector3(-0.5f, 0.5f, 0.5f) * size; vertices[2] = position + new Vector3(0.5f, 0.5f, -0.5f) * size; vertices[3] = position + new Vector3(0.5f, 0.5f, 0.5f) * size; vertices[4] = position + new Vector3(-0.5f, -0.5f, -0.5f) * size; vertices[5] = position + new Vector3(-0.5f, -0.5f, 0.5f) * size; vertices[6] = position + new Vector3(0.5f, -0.5f, -0.5f) * size; vertices[7] = position + new Vector3(0.5f, -0.5f, 0.5f) * size; return BoundingBox.CreateFromPoints(vertices); } Box 1 should start at x -64, Box 2 should start at x 64 which means they never overlap. If I add Box 2 to 129 instead it creates a small gap between the cubes which is not pretty. So, the question is how can I place two cubes beside eachother and make them understand that they do not overlap or actually intersect? Because this way I can never automatically check for intersections or place cube beside eachother.

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  • can't update 12.04 getting package header error

    - by joel
    I originally posted this question, and was redirected to another thread where the question had already been asked. I then posted to that thread and had my post deleted by moderator fossfreedom, and told to post a "new" question... so wth ever.... I don't care if it's old or new I just need help here people! In a nutshell, I can't use sudo apt-get update or the GUI update tool to update my system. Anytime I try using either tool it gives me an error about packages missing headers. I can't send error reports, I have tried all the listed solutions from this post: I can't update my system properly, "no package header" error and from this post: "Problem with MergeList" error when trying to do an update and neither one work. I just want a working solution since I don't have the means of re-installing the OS entirely, and I REALLY don't want to have to go back to using Windows.

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  • How to get the Time Difference in C# .net

    - by Aamir Hasan
    A DateTime instance stores both date and time information. The DateTime class can be found in the System namespace.In order to retrieve the current system time, we can use the static property Now of the DateTime class.In this Example i have shown, how to calculate the difference between two DateTime objects using C# syntax. DateTime startTime; DateTime endTime;            startTime = Convert.ToDateTime("12:12 AM");            endTime = Convert.ToDateTime("1:12 AM");            var timeDifference = new TimeSpan(endTime.Ticks - startTime.Ticks);Response.Write("Time difference in hours is " + timeDifference.Hours);Link:http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx

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  • Lost power during upgrade, how do I recover?

    - by Ryan McClure
    I was attempting to update my 11.10 install to 12.04beta. During the install step, I accidentally lost power to my laptop (the power cable came unplugged) and it shut down. Whenever I go to boot now, I can select my install via Grub and it loads up to where the sign-in should happen, but I get a display that looks like what you see as soon as you shut down. It looks like it locks after checking for the battery. Is there anyway, with or without Live media, to restore my machine's install/update to 12.04 but still keep my settings/applications/files?

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  • Unable to boot 12.04 server: no LVM activated and impossible to mount /

    - by baronKarza
    I'm stuck in the Busy Box shell after upgrading from Ubuntu server 11.10 to Ubuntu server 12.04 64 bit. During the booting phase the system hangs while mounting root filesystem. My system is so configured: /dev/sda1 -- /boot /dev/mapper/vg-lv_root /dev/mapper/vg-lv_var /dev/mapper/vg-lv_tmp When the boot process fails and I'm forwarded to the busybox shell, if I type vgchange -ay I can mount my volumes and all it's OK. But it does not enable LVM automatically so that it is impossible to mount root, var, and tmp. I tried to start with a Knoppix, chroot, reinstall (aptitude) both kernel and lvm2 as suggested by this tread "Fixing unbootable installation on LVM root from Desktop LiveCD": nothing changed. I can't figure out what is the problem. Any suggestion is welcome. Thanks in advance.

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  • how to make new window always raise-up?

    - by user211923
    I got an issue of Ubuntu 13.10, the new created window does not always raise-up to the front. It is annoying, which makes me have to click the icons on unity launcher to focus on the new window. Furthermore, if I turn on a program which has already been opened, the system does not bring me to the program, only blinks its icon on the unity launcher. Again, I need to click the icon to get focus on the window. Seems the system does not smart enough to determine which window should be focused to. I'm pretty sure it did not happen in previous versions of Ubuntu. Any idea how to fix it?

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  • 12.10 starts up to just my desktop background [closed]

    - by Alex
    Possible Duplicate: Unity does not start after installing the fglrx drivers on 12.10 I have only just started using linux more than just instlling it on an old pc for fun and have just changed the driver settings from the default option. The computer starts up and goes through everything else well, but at slightly lower resolution. Once signing on to Ubuntu, it only displays my desktop background and cursor. Can i restore it to the default driver settings? I've spent a while transferring files and don't want to reinstall Ubuntu.

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  • How do I recover a BTRFS partition that will not mount?

    - by Tony
    The installation for 12.04 kept failing, and the solution was to have the installer ignore the btrfs partition that I have previously been using for /home. Now that it's installed, I've been trying to get it to mount the btrfs partition so that I can access my 70GB of files. It won't mount, and btrfsck errors out with the following three lines: parent transid verify failed on 31302336512 wanted 62455 found 62456 parent transid verify failed on 31302336512 wanted 62455 found 62456 parent transid verify failed on 31302336512 wanted 62455 found 62456 Can someone please tell me how to get this partition working? I've read online that I can probably recover the data using btrfs-restore, but I can't find that program anywhere.

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  • Are Intel HD 4000 graphics supported on Ubuntu 10.04 LTS?

    - by user1118764
    I have an intel Core i7-3700 system with Intel HD 4000 integrated graphics with a dual monitor setup (1 connected via VGA, the other via DVI) on Ubuntu 10.04 LTS 64bit. I'm trying to get my monitors correctly detected. Right now, in only 1 unknown monitor is detected with a max resolution of 1280x1024, which is lower than my main monitor connected to DVI. Also, the desktop is mirrored rather than extended. I've previously managed to get a Core i5-2400 system with Intel HD 3000 integrated graphics with the same dual monitor setup and Ubuntu 10.04 LTS 64bit to work using the glasen ppa drivers, but this time, after installing them following the instructions How do I install the Intel HD 3000 video driver? but it doesn't seem to work. Does the Intel HD 4000 require a different driver from the 3000? If so, where can I get it?

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  • How do I fix the Gparted message : Error while reading block at sector xxx ?

    - by Agmenor
    When I tried to move one of my partitions, I got some error messages. Here are some extracts: Move /dev/sda7 to the left 00:05:09 ( ERROR ) (...) check file system on /dev/sda7 for errors and (if possible) fix them 00:00:10 ( SUCCESS ) e2fsck -f -y -v /dev/sda7 (...) move file system to the left 00:04:52 ( ERROR ) perform read-only test 00:04:52 ( ERROR ) using internal algorithm read 114013242 sectors finding optimal blocksize (...) read 113357882 sectors using a blocksize of 1024 sectors 00:04:36 ( ERROR ) 22527034 of 113357882 read Error while reading block at sector 385849832 23182394 sectors read ( ERROR ) (...) libparted messages ( INFO ) Input/output error during read on /dev/sda What should I do to effectively move my partition?

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  • Backing up VPS and Database Servers for website

    - by TravisK
    I currently have an "un-managed" (no help from hosting company) windows vps server. I am working on a good backup solution to return my site back online within a few hours. I am pretty comfortable backing up and restoring my database, however what is a good solution for backing up my VPS for easy recovery? Should I just use windows backup and create an image? I'm open to suggestions. Additionally, has anyone had to restore an entire VPS before? Is it reasonable to have it back up and running in a few hours?

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  • Git doesn't sync files until committed, even if checked out in a different branch

    - by DertWaiter
    Okay, I have git 1.7.11.1 on Windows and I have a local test repository with 2 branches. One is master with index.php and help.php. I then create another branch called slave :) I run from git bash rm help.php and it disappears from the folder, but I don't stage anything. I switch to checkout master branch and it is supposed to restore file help.php because it is not modified in the master branch, isn't it? And it does not do it. When I go back to the slave branch and commit and then switch to checkout master then help.php appears. Is that the way it is supposed to to work? Why?

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  • C# : Parsing information out of a path

    - by mbcrump
    If you have a path for example: \\MyServer\MyFolderA\MyFolderB\MyFile.jpg and you need to parse out the filename, directory name or the directory parent name. You should use the fileinfo class instead of a regex expression or a string split. See the example code below:   Code Snippet using System; using System.IO;   class Test {     static void Main(string[] args)     {         string file = @"\\MyServer\MyFolderA\MyFolderB\MyFile.jpg";         FileInfo fi = new FileInfo(file);         Console.WriteLine(fi.Name);                  // Prints File.jpg         Console.WriteLine(fi.Directory.Name);        // Prints FolderB         Console.WriteLine(fi.Directory.Parent.Name); // Prints FolderA     } }

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  • HELP: I Broke Ubuntu By Uninstalling Compiz

    - by tSquirrel
    I'm still getting used to Linux, having come from Windows. I was receiving an error that "compiz" had crashed a few times so I figured I'd uninstall it. sudo apt-get remove compiz sudo apt-get install compiz I logged out then back in, after that, the GUI was totally gone and I have no idea how to get it back or what I need to do to restore the GUI to what it was before I killed poor Compiz. GUI was pretty much unmodified after a fresh install of 14.04 How can I fix it? I'm not even sure how to get to a terminal or anything. The login screen looks normal, but after logging in, it's a totally bare desktop with my backround and a few icons. No Dash, toolbar, etc. Hot Keys don't seem to work either (Super = Dash doesn't work, etc); although I did accidently open "Disk" UI. Not sure how. Please Help! Right now I'm working off my W7 dualboot.

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  • javaf, problem...plz help someone...urgent [closed]

    - by innovative_aj
    i have made a word guessing game, when i click myButton to check if the guessed word is right or wrong, ball1 is moved into the "container" if its right, i want that when i click the button again and if the typed word is right, the 2nd ball should move into the container too... means one ball per correct answer...plz help me someone and provide me with the code that i can implement, its quite urgent... controller class coding /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package project3; import java.net.URL; import java.util.ResourceBundle; import javafx.event.ActionEvent; import javafx.event.EventHandler; import javafx.fxml.FXML; import javafx.fxml.Initializable; import javafx.scene.control.Button; import javafx.scene.control.Label; import javafx.scene.control.TextField; import javafx.scene.layout.StackPane; import javafx.scene.shape.Circle; /** * FXML Controller class * * @xxx */ public class MyFxmlController implements Initializable { @FXML // fx:id="ball1" private Circle ball1; // Value injected by FXMLLoader @FXML // fx:id="ball2" private Circle ball2; // Value injected by FXMLLoader @FXML // fx:id="ball3" private Circle ball3; // Value injected by FXMLLoader @FXML // fx:id="ball4" private Circle ball4; // Value injected by FXMLLoader @FXML // fx:id="container" private Circle container; // Value injected by FXMLLoader @FXML // fx:id="myButton" private Button myButton; // Value injected by FXMLLoader @FXML // fx:id="myLabel1" private Label myLabel1; // Value injected by FXMLLoader @FXML // fx:id="myLabel2" private Label myLabel2; // Value injected by FXMLLoader @FXML // fx:id="pane" private StackPane pane; // Value injected by FXMLLoader @FXML // fx:id="txt" private TextField txt; // Value injected by FXMLLoader @Override // This method is called by the FXMLLoader when initialization is complete public void initialize(URL fxmlFileLocation, ResourceBundle resources) { assert ball1 != null : "fx:id=\"ball1\" was not injected: check your FXML file 'MyFxml.fxml'."; assert ball2 != null : "fx:id=\"ball2\" was not injected: check your FXML file 'MyFxml.fxml'."; assert ball3 != null : "fx:id=\"ball3\" was not injected: check your FXML file 'MyFxml.fxml'."; assert ball4 != null : "fx:id=\"ball4\" was not injected: check your FXML file 'MyFxml.fxml'."; assert container != null : "fx:id=\"container\" was not injected: check your FXML file 'MyFxml.fxml'."; assert myButton != null : "fx:id=\"myButton\" was not injected: check your FXML file 'MyFxml.fxml'."; assert myLabel1 != null : "fx:id=\"myLabel1\" was not injected: check your FXML file 'MyFxml.fxml'."; assert myLabel2 != null : "fx:id=\"myLabel2\" was not injected: check your FXML file 'MyFxml.fxml'."; assert pane != null : "fx:id=\"pane\" was not injected: check your FXML file 'MyFxml.fxml'."; assert txt != null : "fx:id=\"txt\" was not injected: check your FXML file 'MyFxml.fxml'."; // initialize your logic here: all @FXML variables will have been injected myButton.setOnAction(new EventHandler<ActionEvent>(){ @Override public void handle(ActionEvent event) { int count = 0; String guessed=txt.getText(); boolean result; result=MyCode.check(guessed); if(result) { ball1.setTranslateX(600); ball1.setTranslateY(250-container.getRadius()); //ball2.setTranslateX(600); // ball2.setTranslateY(250-container.getRadius()); } else System.out.println("wrong"); } }); } } word guessing logic public class MyCode { static String x="Netbeans"; static String y[]={"net","beans","neat","beat","bet"}; //static int counter; // public MyCode() { // counter++; //} static boolean check(String guessed) { int count=0; boolean result=false; //counter++; //System.out.println("turns"+counter); for(count=0;count<5;count++) { if(guessed.equals(y[count])) { result=true; break; } } if(result) System.out.println("Right"); else System.out.println("Wrong"); return result; } }

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  • backup dedicated server runing ubuntu 10.04 and plesk 11.01 prior to update os to uduntu 12.04

    - by timmob
    i would like to backup my dedicated server which is my web server hosting various sites and email, so that I can update the os to Ubuntu 12.04, and basically restore back to 10.04 if things go wrong. I have a local machine that I can install 12.04 onto an then I was going to rsinc between the two, but I am fairly clueless when it comes to linux. I can ssh into the remote server and gain root access. can anyone explain if i need to backup the whole server hard drive or just some of the files? Thanks Timmo.

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  • Configuring trace file size and number in WebCenter Content 11g

    - by Kyle Hatlestad
    Lately I've been doing a lot of debugging using the System Output tracing in WebCenter Content 11g.  This is built-in tracing in the content server which provides a great level of detail on what's happening under the hood.  You can access the settings as well as a view of the tracing by going to Administration -> System Audit Information.  From here, you can select the tracing sections to include.  Some of my personal favorites are searchquery,  systemdatabase, userstorage, and indexer.  Usually I'm trying to find out some information regarding a search, database query, or user information.  Besides debugging, it's also very helpful for performance tuning. [Read More] 

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  • Configuring trace file size and number in WebCenter Content 11g

    - by Kyle Hatlestad
    Lately I've been doing a lot of debugging using the System Output tracing in WebCenter Content 11g.  This is built-in tracing in the content server which provides a great level of detail on what's happening under the hood.  You can access the settings as well as a view of the tracing by going to Administration -> System Audit Information.  From here, you can select the tracing sections to include.  Some of my personal favorites are searchquery,  systemdatabase, userstorage, and indexer.  Usually I'm trying to find out some information regarding a search, database query, or user information.  Besides debugging, it's also very helpful for performance tuning. One of the nice tricks with the tracing is it honors the wildcard (*) character.  So you can put in 'schema*' and gather all of the schema related tracing.  And you can notice if you select 'all' and update, it changes to just a *.   To view the tracing in real-time, you simply go to the 'View Server Output' page and the latest tracing information will be at the bottom. This works well if you're looking at something pretty discrete and the system isn't getting much activity.  But if you've got a lot of tracing going on, it would be better to go after the trace log file itself.  By default, the log files can be found in the <content server instance directory>/data/trace directory. You'll see it named 'idccs_<managed server name>_current.log.  You may also find previous trace logs that have rolled over.  In this case they will identified by a date/time stamp in the name.  By default, the server will rotate the logs after they reach 1MB in size.  And it will keep the most recent 10 logs before they roll off and get deleted.  If your server is in a cluster, then the trace file should be configured to be local to the node per the recommended configuration settings. If you're doing some extensive tracing and need to capture all of the information, there are a couple of configuration flags you can set to control the logs. #Change log size to 10MB and number of logs to 20FileSizeLimit=10485760FileCountLimit=20 This is set by going to Admin Server -> General Configuration and entering them in the Additional Configuration Variables: section.  Restart the server and it should take on the new logging settings. 

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  • How do I run update-grub from a LiveCD?

    - by Kelley
    Okay, so I did something stupid. I was trying to clean up my Grub entries, and accidentally removed all of my Linux kernels from Grub (they're still on the hard drive). So now, obviously, Grub doesn't give me any way to boot into Ubuntu; I can boot into Windows just fine, but Ubuntu isn't even listed. So I just want to run "sudo upgrade-grub" somehow to restore Ubuntu to the list. I can boot from a LiveCD, but once there how do I run that command? (My Ubuntu installation is on sda5, by the way.)

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  • Get script for every action in SQL Server Management Studio

    I am always conscious to keep a record of all operations performed on my database servers. Operations through T-SQL in an SSMS query pane can easily be saved in query files. For table modifications through SSMS designer I have predefined setting to generate T-SQL scripts. However there are numerous database and server level tasks that I use the SSMS GUI and I would like to have a script of these changes for later reference. Examples of such actions through the SSMS GUI are backup/restore, changing compatibility level of a database, manipulating permissions, dealing with database or log files or creating/manipulating any login/user. I am looking for any way to generate T-SQL code for such actions, so that it may be kept for later reference

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  • Programming Windows Identity Foundation - ISBN 978-0-7356-2718-5

    - by TATWORTH
    This book introduces a new technology that promises a considerable improvement on the ASP.NET membership system. If you ever had to write an extranet, system you should be aware of the problems in setting up membership for your site. The Windows Identity Foundation promises to be an excellent replacement. Therefore the book Programming Windows Identity Foundation - ISBN 978-0-7356-2718-5 at  http://oreilly.com/catalog/9780735627185, is breaking new ground. I recommend this book to all ASP.NET development teams. You should reckon on 3 to 5 man-days to study it and try out the sample programs and see if it can replace your bespoke solution. Rember this is version 1 of WIF and give yourself adequete time to read this book and familiarise yourself with the new software. Some URLs for more information: WIF home page at http://msdn.microsoft.com/en-us/security/aa570351.aspx The Identity Training Kit at http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=c3e315fa-94e2-4028-99cb-904369f177c0 The author's blog at http://www.cloudidentity.net/

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  • How do I read my PDFs and watch videos properly again?

    - by asp
    Whenever I watch videos, either online of local via Totem and/or open PDF files using evince. The system gets really, really bogged down. All apps get really slow, menus take forever to display, switching windows gives me time to make a coffee, etc. I have a couple of bug reports open on this, but what do I need to do to really troubleshoot the issue? I've purged Adobe Flash from the system, but YouTube HTML5 videos still have the issue. A bunch of PDFs saved locally trigger the problem. And to (temporarily) remove the slowness, I need to shutdown the computer, breath for a few minutes, then restart. A simple reboot does not do the trick. How can I identify the cause? This only started on 13.04. I've had Ubuntu on this machine for a year without a problem until "upgrading" to 13.04. I am not a programmer, but I suspect an issue with the Intel video driver.

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  • My application had a WindowsIdentity crisis

    - by Brian Donahue
    The project I have been working on this week to test computer environments needs to do various actions as a user other than the one running the application. For instance, it looks up an installed Windows Service, finds out who the startup user is, and tries to connect to a database as that Windows user. Later on, it will need to access a file in the context of the currently logged-in user. With ASP .NET, this is super-easy: just go into Web.Config and set up the "identity impersonate" node, which can either impersonate a named user or the one who had logged into the website if authentication was enabled. With Windows applications, this is not so straightforward. There may be something I am overlooking, but the limitation seems to be that you can only change the security context on the current thread: any threads spawned by the impersonated thread also inherit the impersonated credentials. Impersonation is easy enough to do, once you figure out how. Here is my code for impersonating a user on the current thread:         using System;         using System.ComponentModel;         using System.Runtime.InteropServices;         using System.Security.Principal;         public class ImpersonateUser         {                 IntPtr userHandle;   [DllImport("advapi32.dll", SetLastError = true)]                 static extern bool LogonUser(                         string lpszUsername,                         string lpszDomain,                         string lpszPassword,                         LogonType dwLogonType,                         LogonProvider dwLogonProvider,                         out IntPtr phToken                         );                     [DllImport("kernel32.dll", SetLastError = true)]                 static extern bool CloseHandle(IntPtr hHandle);                     enum LogonType : int                 {                         Interactive = 2,                         Network = 3,                         Batch = 4,                         Service = 5,                         NetworkCleartext = 8,                         NewCredentials = 9,                 }                     enum LogonProvider : int                 {                         Default = 0,                 }                 public static WindowsImpersonationContext Impersonate(string user, string domain, string password)                 {   IntPtr userHandle = IntPtr.Zero;                         bool loggedOn = LogonUser(                                 user,                                 domain,                                 password,                                 LogonType.Interactive,                                 LogonProvider.Default,                                 out userHandle);                               if (!loggedOn)                         throw new Win32Exception(Marshal.GetLastWin32Error());                           WindowsIdentity identity = new WindowsIdentity(userHandle);                         WindowsPrincipal principal = new WindowsPrincipal(identity);                         System.Threading.Thread.CurrentPrincipal = principal;                         return identity.Impersonate();   }         }   /* Call impersonation */ ImpersonateUser.Impersonate("UserName","DomainName","Password"); /* When you want to go back to the original user */ WindowsIdentity.Impersonate(IntPtr.Zero); When you want to stop impersonating, you can call Impersonate() again with a null pointer. This will allow you to simulate a variety of different Windows users from the same applicaiton.

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