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  • HTG Explains: What AppArmor Is and How It Secures Your Ubuntu System

    - by Chris Hoffman
    AppArmor is an important security feature that’s been included by default with Ubuntu since Ubuntu 7.10. However, it runs silently in the background, so you may not be aware of what it is and what it’s doing. AppArmor locks down vulnerable processes, restricting the damage security vulnerabilities in these processes can cause. AppArmor can also be used to lock down Mozilla Firefox for increased security, but it doesn’t do this by default. How to Use an Xbox 360 Controller On Your Windows PC Download the Official How-To Geek Trivia App for Windows 8 How to Banish Duplicate Photos with VisiPic

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  • How to Back Up Your Linux System With Back In Time

    - by Chris Hoffman
    Ubuntu includes Déjà Dup, an integrated backup tool, but some people prefer Back In Time instead. Back In Time has several advantages over Déjà Dup, including a less-opaque backup format, integrated backup file browser, and more configurability. Déjà Dup still has a few advantages, notably its optional encryption and simpler interface, but Back In Time gives Déjà Dup a run for its money. How to Sync Your Media Across Your Entire House with XBMC How to Own Your Own Website (Even If You Can’t Build One) Pt 2 How to Own Your Own Website (Even If You Can’t Build One) Pt 1

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  • Asp.net grid view

    - by Manoj
    Hello @, I am nt able to edit the details in gridview. When i click on Edit link(Command Field), row editing event is fired but when i click on update link , row editing event is fired again and update event is not getting fired at all. Any suggestions ??

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  • Roll Your Own Passive 3D Movie System with Dual Projectors

    - by Jason Fitzpatrick
    If you’d like to enjoy 3D movies with passive polarized glasses for less than $50,000 (the average price of a passive 3D projector), this DIY setup brings the price down to a more accessible level. Courtesy of 3D movie and theater enthusiast Jahun, this guide details how you can achieve passive 3D projection using two radically less expensive projectors, cheap polarized filters, and some software. The project won’t be free-as-in-beer but with some careful shopping the bill will ring up at the thousands instead of tens-of-thousands of dollars. Hit up the link below to see how he pulled off miming a $50,000 projector for less than a tenth the cost. Passive Projection [via Hack A Day] How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using? HTG Explains: What The Windows Event Viewer Is and How You Can Use It

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  • return a line of grid view in ModalPopupExtender

    - by Meysam Javadi
    hi i use ModalPopupExtender from AjaxControlToolkit to show a panel. my panel have something like this: <asp:Panel ID="pnlSearchPlan" runat="server" style="background-color:#ffffdd;border-width:3px;border-style:solid;border-color:Gray;padding:3px;width:400px;"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <cc1:ModalPopupExtender ID="UpdatePanel1_ModalPopupExtender" runat="server" TargetControlID="linkToPopup" PopupControlID="pnlSearchPlan" BackgroundCssClass="ModalBackColor" DropShadow="true" OkControlID="tbnSelect" OnOkScript="onOk()" CancelControlID="btnCancel"> </cc1:ModalPopupExtender> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <table width="100%" dir="rtl"> <tr> <td >owner</td> <td> <asp:TextBox ID="txtCriteria" runat="server" ></asp:TextBox> <asp:Button ID="btnOk" runat="server" Text="ok" onclick="btnOk_Click" /> <asp:Button ID="tbnSelect" runat="server" Text="select" onclick="tbnSelect_Click" /> <asp:Button ID="btnCancel" runat="server" Text="close" /> </td> </tr> <tr> <td colspan="2"> </asp:RadioButtonList> </td> </tr> <tr> <td colspan="2" align="center"> <pcal:CustomGridView ID="gdvPlan" runat="server" CellPadding="4" ForeColor="Black" GridLines="Vertical" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" BorderWidth="1px"> <RowStyle BackColor="#F7F7DE" /> <FooterStyle BackColor="#CCCC99" /> <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" /> </pcal:CustomGridView> </td> </tr> </table> </ContentTemplate> </asp:UpdatePanel> </asp:Panel> now want return one cell of gridview after ModalPopupExtender is closed, is this possible without postback? is there any way to return value after close?

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  • Where to find iPhone system buttons and icons graphics?

    - by Ariel
    Hey guys, I'm trying to find a way to use the original Apple system buttons and icons in a web site. Is there a way to get these original graphics in png format? There are not-so-nice ways to obtain them of course. Two I was thinking of: Save them from this link, then convert to png. Take screen captures on the iPhone itself, and cut the icons from the saved images. Is anyone aware of a nicer way to obtain the original graphics? Does anyone know where they are stored on the Mac? Thanks :-) Ariel

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  • Content Management System ? Overview

    On several occasion a client would like to be able to modify the pages and add their content. This need may arise due to change in profile of the services offered or additional services. This may eve... [Author: Alan Smith - Web Design and Development - June 04, 2010]

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  • what is the best way to use loops to detect events while the main loop is running?

    - by yao jiang
    I am making an "game" that has pathfinding using pygame. I am using Astar algo. I have a main loop which draws the whole map. In the loop I check for events. If user press "enter" or "space", random start and end are selected, then animation starts and it will try to get from start to end. My draw function is stupid as hell right now, it works as expected but I feel that I am doing it wrong. It'll draw everything to the end of the animation. I am also detecting events in there as well. What is a better way of implementing the draw function such that it will draw one "step" at a time while checking for events? animating = False; while loop: check events: if not animating: # space or enter press will choose random start/end coords if enter_pressed or space_pressed: start, end = choose_coords route = find_route(start, end) draw(start, end, grid, route) else: # left click == generate an event to block the path # right click == user can choose a new destination if left_mouse_click: gen_event() reroute() elif right_mouse_click: new_end = new_end() new_start = current_pos() route = find_route(new_start, new_end) draw(new_start, new_end, grid, route) # draw out the grid def draw(start, end, grid, route_coord): # draw the end coords color = red; pick_image(screen, color, width*end[1],height*end[0]); pygame.display.flip(); # then draw the rest of the route for i in range(len(route_coord)): # pausing because we want animation time.sleep(speed); # get the x/y coords x,y = route_coord[i]; event_on = False; if grid[x][y] == 2: color = green; elif grid[x][y] == 3: color = blue; for event in pygame.event.get(): if event.type == pygame.MOUSEBUTTONDOWN: if event.button == 3: print "destination change detected, rerouting"; # get mouse position, px coords pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; grid[r][c] = 4; end = [r, c]; elif event.button == 1: print "user generated event"; pos = pygame.mouse.get_pos(); # get grid coord c = pos[0] // width; r = pos[1] // height; # mark it as a block for now grid[r][c] = 1; event_on = True; if check_events([x,y]) or event_on: # there is an event # mark it as a block for now grid[y][x] = 1; pick_image(screen, event_x, width*y, height*x); pygame.display.flip(); # then find a new route new_start = route_coord[i-1]; marked_grid, route_coord = find_route(new_start, end, grid); draw(new_start, end, grid, route_coord); return; # just end draw here so it wont throw the "index out of range" error elif grid[x][y] == 4: color = red; pick_image(screen, color, width*y, height*x); pygame.display.flip(); # clear route coord list, otherwise itll just add more unwanted coords route_coord_list[:] = [];

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  • Recommended total system backup solution

    - by bioShark
    I hope this question won't get closed immediately since it has a generic title. I already searched a bit around the answers here, but nothing satisfied me. I want a back-up solution that makes a total back-up, so that I can restore my Ubuntu in case of major failures, like HDD failing. As far as I can see, I have 2 choices: 1) Backing up with Deja Dup to an external disk. This is fine and I am already doing, but in case my HDD fails, and I make a new Ubuntu install on a new disk, will Deja Dup be able to restore all my setting and stuff from the backed up files? If it can, then what other files/folders should I add in Deja Dup to back-up (currently I have set only the recommended /home folder)? Is there a point in telling Deja Dup to back-up everything under "/" ? 2) A disk/partition cloning software. This would be something similar to Noton ghost. Is there such a software with nice GUI that you could recommend for Ubuntu? And even better, it would be nice if Ubuntu's liveCD could recognize such a clone at install step. I am using 11.10

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  • Windows no longer boots on dual-boot system

    - by N Alex
    While trying to delete an Ubuntu partition from my hdd I accidentally rebooted my computer. (Note: the partition was originally made from an existing partition using paragon.) After that when I tried to start the computer I got the GRUB rescue terminal prompt. I wasn't able to do much from that, but I did manage to boot Ubuntu from a USB drive and to run boot-repair. But now when I try to select Windows 7 from the boot selection menu I get the error 0xc0000225. Here is the link to the BootInfo summary created by boot-repair: http://paste.ubuntu.com/1032584/ I have a lot of very important data on my hdd and I would really appreciate your help.

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  • Optimizing spacing of mesh containing a given set of points

    - by Feynman
    I tried to summarize the this as best as possible in the title. I am writing an initial value problem solver in the most general way possible. I start with an arbitrary number of initial values at arbitrary locations (inside a boundary.) The first part of my program creates a mesh/grid (I am not sure which is the correct nuance), with N points total, that contains all the initial values. My goal is to optimize the mesh such that the spacing is as uniform as possible. My solver seems to work half decently (it needs some more obscure debugging that is not relevant here.) I am starting with one dimension. I intend to generalize the algorithm to an arbitrary number of dimensions once I get it working consistently. I am writing my code in fortran, but feel free to reply with pseudocode or the language of your choice. Allow me to elaborate with an example: Say I am working on a closed interval [1,10] xmin=1 xmax=10 Say I have 3 initial points: xmin, 5 and xmax num_ivc=3 known(num_ivc)=[xmin,5,xmax] //my arrays start at 1. Assume "known" starts sorted I store my mesh/grid points in an array called coord. Say I want 10 points total in my mesh/grid. N=10 coord(10) Remember, all this is arbitrary--except the variable names of course. The algorithm should set coord to {1,2,3,4,5,6,7,8,9,10} Now for a less trivial example: num_ivc=3 known(num_ivc)=[xmin,5.5,xmax or just num_ivc=1 known(num_ivc)=[5.5] Now, would you have 5 evenly spaced points on the interval [1, 5.5] and 5 evenly spaced points on the interval (5.5, 10]? But there is more space between 1 and 5.5 than between 5.5 and 10. So would you have 6 points on [1, 5.5] followed by 4 on (5.5 to 10]. The key is to minimize the difference in spacing. I have been working on this for 2 days straight and I can assure you it is a lot trickier than it sounds. I have written code that only works if N is large only works if N is small only works if it the known points are close together only works if it the known points are far apart only works if at least one of the known points is near a boundary only works if none of the known points are near a boundary So as you can see, I have coded the gamut of almost-solutions. I cannot figure out a way to get it to perform equally well in all possible scenarios (that is, create the optimum spacing.)

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  • How to save file and read

    - by Jessy
    Hello everyone, I create a program that place random image in grid layout format. The size of the grid layout is 6 x 6 = 36. Only 10 were filled with images (each image was different) and the rest were empty. freeimagehosting.net/uploads/bfb7e85f63.jpg How can I save it to a file and read it again, so it will display the same images with same placement on the grid? Here is the code that I used to save the images: //image file String []arrPic = {"pic1.jpg","pic2.jpg","pic3.jpg","pic4.jpg","pic5.jpg","pic6.jpg","pic7.jpg","pic8.jpg","pic9.jpg","pic10.jpg",,"pic11.jpg","pic12.jpg","pic13.jpg"}; ArrayList<String> pictures = new ArrayList<String>(Arrays.asList(arrPic)); ArrayList<String> file = new ArrayList<String>(); JPanel pDraw = new JPanel(new GridLayout(6,6,2,2)); ... //fill all grids with empty label for (int i =0; i<(6*6); i++){ JLabel lbl = new JLabel(""); pDraw.add(lbl); } ... //Choose random box to be filled with images for(int i=0; i<10; i++){ Boolean number = true; while(number){ int n = rand.nextInt(35); if(!(arraylist.contains(n))) number = false; arraylist.add(n); } //fill the grids with images for(int i=0; i<arraylist.size(); i++){ //select random image from arraylist int index = rand.nextInt (pictures.size()); String fileName = (String) pictures.get(index ); //find the image file icon = createImageIcon(fileName); //save the file in a new file file.add(fileName); //rescaled the image int x = rand.nextInt(50)+50; int y = rand.nextInt(50)+50; Image image = icon.getImage().getScaledInstance(x,y,Image.SCALE_SMOOTH); icon.setImage(image); //remove empty label and replace it with an image int one = (Integer) arraylist.get(i); pDraw.remove(one); final JLabel label; pDraw.add(label,one); }

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  • sprite animation system height recalculating has some issues

    - by Nicolas Martel
    Basically, the way it works is that it update the frame to show every let's say 24 ticks and every time the frame update, it recalculates the height and width of the new sprite to render so that my gravity logics and stuff works well. But the problem i am having now is a bit hard to explain in words only, therefore i will use this picture to assist me The picture So what i need basically is that if let's say i froze the sprite at the first frame, then unfreeze it and freeze it at the second frame, have the second frame's sprite (let's say it's a prone move) simply stand on the foothold without starting the gravity and when switching back, have the first sprite go back on the foothold like normal without being under the foothold. I had 2 ideas on doing this but I'm not sure it's the most efficient ways to do it so i wanna hear your inputs.

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  • KVM switching from lower resolution system resets Ubuntu high resolution

    - by Ed Manet
    I'm running 12.04 desktop on my main desktop and it's hooked to a KVM (IOGear miniview) that shares the peripherals with a SLES 11 machine. The SLES 11 machine can't get the same resolution as the Ubuntu machine because of different graphics hardware. If I switch from Ubuntu to SLES and stay there too long, when I switch back to Ubuntu the screen resolution on Ubuntu is reset to the same as SLES. I can get it back easily just opening the Displays configuration; it immediately resets to the high resolution as soon as the Displays window opens. But all my open windows have been maximized and it's a P.I.T.A. having to resize them all again. How do I get it to just stay at the high resolution between switching between systems? Is there a setting in the Xorg conf file I need to set?

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  • Retrieve Grid Id on CellEdit JqGrid

    - by Sergio
    Hi guys, i was trying to do a Cell Editing based on this documentation http://www.trirand.com/jqgridwiki/doku.php?id=wiki:cell_editing I have two questions: How can i get the Index of my row posted to the server: The information i'm getting posted is the following: a) value of the cell b) RowId The thing is that the rowId doesn't help me. I need the actual Id of the information I'm displaying so i can do the server update with that Id. colNames: ['Id', 'Codigo', 'Nombre'], colModel: [ { name: 'Id', index: 'Id', width: 50, align: 'left', hidden: true }, { name: 'Codigo', index: 'Codigo', width: 55, align: 'left', editable: true, editrules: { number: true} }, { name: 'Nombre', index: 'Nombre', width: 200, align: 'left' }], I need the value of the column 'Id' to do my update. 2.I don't understand in the documentation how to manage an error from the server, so I can display the error message. Thank you very much! Notes: a) I've already asked in the forum of trirand, but no one reply it to me. b) If anyone has done this, it would help if help me pasting the code. c) I'm working on MVC 2 Asp.net

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  • The Raspberry Pi JavaFX In-Car System (Part 3)

    - by speakjava
    Ras Pi car pt3 Having established communication between a laptop and the ELM327 it's now time to bring in the Raspberry Pi. One of the nice things about the Raspberry Pi is the simplicity of it's power supply.  All we need is 5V at about 700mA, which in a car is as simple as using a USB cigarette lighter adapter (which is handily rated at 1A).  My car has two cigarette lighter sockets (despite being specified with the non-smoking package and therefore no actual cigarette lighter): one in the centre console and one in the rear load area.  This was convenient as my idea is to mount the Raspberry Pi in the back to minimise the disruption to the very clean design of the Audi interior. The first task was to get the Raspberry Pi to communicate using Wi-Fi with the ELM 327.  Initially I tried a cheap Wi-Fi dongle from Amazon, but I could not get this working with my home Wi-Fi network since it just would not handle the WPA security no matter what I did.  I upgraded to a Wi Pi from Farnell and this works very well. The ELM327 uses Ad-Hoc networking, which is point to point communication.  Rather than using a wireless router each connecting device has its own assigned IP address (which needs to be on the same subnet) and uses the same ESSID.  The settings of the ELM327 are fixed to an IP address of 192.168.0.10 and useing the ESSID, "Wifi327".  To configure Raspbian Linux to use these settings we need to modify the /etc/network/interfaces file.  After some searching of the web and a few false starts here's the settings I came up with: auto lo eth0 wlan0 iface lo inet loopback iface eth0 inet static     address 10.0.0.13     gateway 10.0.0.254     netmask 255.255.255.0 iface wlan0 inet static     address 192.168.0.1     netmask 255.255.255.0     wireless-essid Wifi327     wireless-mode ad-ho0 After rebooting, iwconfig wlan0 reported that the Wi-Fi settings were correct.  However, ifconfig showed no assigned IP address.  If I configured the IP address manually using ifconfig wlan0 192.168.0.1 netmask 255.255.255.0 then everything was fine and I was able to happily ping the IP address of the ELM327.  I tried numerous variations on the interfaces file, but nothing I did would get me an IP address on wlan0 when the machine booted.  Eventually I decided that this was a pointless thing to spend more time on and so I put a script in /etc/init.d and registered it with update-rc.d.  All the script does (currently) is execute the ifconfig line and now, having installed the telnet package I am able to telnet to the ELM327 via the Raspberry Pi.  Not nice, but it works. Here's a picture of the Raspberry Pi in the car for testing In the next part we'll look at running the Java code on the Raspberry Pi to collect data from the car systems.

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  • What is the default file system of /var/run, /var/lock

    - by Casey
    Trying to figure out if my /var/run is using disk or not. See the command output: $ df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg0-root 40G 15G 26G 36% / none 3.9G 340K 3.9G 1% /dev none 3.9G 1.1M 3.9G 1% /dev/shm tmpfs 3.9G 600K 3.9G 1% /tmp none 3.9G 452K 3.9G 1% /var/run none 3.9G 0 3.9G 0% /var/lock none 3.9G 0 3.9G 0% /lib/init/rw /dev/md0 236M 59M 165M 27% /boot /dev/mapper/vg0-home 60G 58G 2.3G 97% /home

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  • Ubuntu 12.10 automatic logout

    - by anthony
    I just had a new desktop constructed and installed ubuntu 12.10 which was successful for the most part but every time I open up some applications like thunderbird I get automatically logged out and all my windows are closed. System error messages also come up from time to time. Also I'm not sure if this helps but if I select the "Use system title bar and borders" in chromium I will also get logged out and from that point won't be able to use it without getting logged out in the future. If I click on particular links as well. If anyone has any tips on how I can isolate and fix the problem I would greatly appreciate it.

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  • How to enable ajax when deriving from System.Web.UI.WebControls.WebControl on controls that are crea

    - by Dave
    I've built a class that derives from System.Web.UI.WebControl. It basically renders pagination links (same as what you see on top of GridView when enabled) for use above a repeater. I'm creating some anchor tags explicitly inside my nav control obviously, but they don't perform ajax postbacks. My understanding is that ajax requires POSTS to work right? Well, these would be GETs which I think is the problem. Is there a way to achieve what I'm trying to do? Thanks!

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  • commons-exec: Executing a program on the system PATH?

    - by Stefan Kendall
    I'm trying to execute a program (convert from ImageMagick, to be specific) whose parent folder exists on the path. Ergo, when I run convert from the command line, it runs the command. The following, however, fails: String command = "convert" CommandLine commandLine = CommandLine.parse(command); commandLine.addArgument(...) ... int exitValue = executor.execute(commandLine); If I specify the full path of the convert executable (C:\Program files\...) then this code works. If I don't do this, I get an exception thrown with exit value 4. How do I get commons-exec to recognize the system path?

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  • How to model interentity membership in entity-component architecture?

    - by croxis
    I'm falling in love with simple grace of entity-component design, although I still have issues breaking from MVC and OOP practices. Some of my game entities have membership relationships with each other (ex: a player is a member of a city, a city is a member of a nation), and I am unsure on the best way to implement it. My initial reaction is to have a a MemberOfCity component that points to the appropriate city component, but components are suppose to have no references to each other. My other option is to have a System do it, but that would require the system to persist data outside of a component. Is there a clean way to do this in an entity-component design, or am I trying to use a hammer on a screw and should use a hybrid/another approach?

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