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  • Boot prompt hyphens

    - by purjuntu
    Booting an Ubuntu DVD, pressing F6 and then ESC presents the boot prompt with the default kernel options, with the possibility of editing and adding extra options. Something like: kernel /casper/vmlinuz boot=casper quiet splash -- Questions: What's the meaning of the two hyphens? When adding an extra option (such as "toram" or "vga=791"), is there any difference between adding it BEFORE or AFTER the hyphens? When typing commands in Bash, two hyphens in a row means "options end here; anything that follows should be treated as an argument, even if it starts with a hyphen". But the hyphens must have another meaning at the boot prompt, as "toram" or "vga=791" really are options.

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  • How to upgrade to 12.10 daily build from 12.04? [closed]

    - by Forbidden Overseer
    Possible Duplicate: How do I upgrade to the development release (aka. Ubuntu+1)? I was suggested these commands when I searched for it on Google: sudo sed -i 's/precise/quantal/g' /etc/apt/sources.list sudo apt-get update && sudo apt-get dist-upgrade But, I don't know whether that works or not. So my question is: How to upgrade 12.04 to the 12.10 daily build? How to rollback to 12.04 if the daily build breaks? You might ask me why I want to try something like that... it's probably because I want to check out all the new upgrades that have been done in quantal. Another bonus question: If I select the "precise-proposed" updates in Update Manager, how close will my 12.04 come off to the 12.10? Are these precise proposed updates same as "quantal-proposed"? What are the differences?

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  • How to operating systems… run… without having an OS to run in?

    - by Plazmotech Binary
    I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work? It would be really brilliant to know this! Thanks.

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  • can't control pianobar after using echo

    - by Ubuntuusr22222
    I have a script that starts pianobar (pandora player) and autoloads into tty2 after booting. I'm running Ubuntu Precise 12.04. it's a pretty simple script: #!bin/bash sleep 5 echo "2" | pianobar This works, it selects station 2 and begins playing... but when I try to type in commands it doesn't work (like pushing "p" for pause.) It'll show the letter for a second, then hide it. If I try to exit with ctrl+z it just sits there and I can't use it at all. If I run this it works fine but doesn't auto-select the second station: #!bin/bash sleep 5 pianobar Is there anyway to write this so it will automatically input "2" and then allow me to control from there? Or am I stuck with having to select 2 every time I boot up?

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  • Remove ubuntu when it's the only OS on the machine

    - by Frances
    I've been trying for hours to remove ubuntu 12 which is the only OS on my laptop. I don't have a Windows installation there. I've followed various bits of help, including trying to get boot-repair to work (I just get error messages when I try to run the recommended commands). Please can someone tell me how to get rid of ubuntu? It won't recognise my .iso copy of Windows - tries to read the DVD and then just boots ubuntu anyway. The DVD is fine - I can use it on other computers and it's perfectly OK. Frances

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  • Stucked in the grub command prompt

    - by user903645
    I have a windows xp os, and I ve decided to give ubuntu a shot. I installed and It when rebooting it did boot by default windows. I red several forums and after entering those commands: sudo mkdir /mnt/ubuntu sudo mount /dev/sda2 /mnt/ubuntu sudo grub-install /dev/sda --root -directory=/mnt/ubuntu after rebooting the system showed me the command grub. And I cannot get anywhere. I don t have a windows cd to fix anything. so how can I launch windows from this command grub? Thanks... I am in a real mess.

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  • Loop URL (2 replies)

    I have a 3rd party product that is called on a server with a URL. I will have to run thousands of these URLs in a batch. I will do this in winforms, perhaps in a Windows Service, running on the server. Are there dotnet commands to loop through URLs, where I can run the URL, then wait for its response, then run the next one... in a loop. I am just unclear on the call to run the URL, and the waiting...

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  • Loop URL (2 replies)

    I have a 3rd party product that is called on a server with a URL. I will have to run thousands of these URLs in a batch. I will do this in winforms, perhaps in a Windows Service, running on the server. Are there dotnet commands to loop through URLs, where I can run the URL, then wait for its response, then run the next one... in a loop. I am just unclear on the call to run the URL, and the waiting...

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  • Gnome 3.10 doesn't show login, Ubuntu 13.10

    - by TheWebs
    I use gnome as default desktop. And I recently upgrade Ubuntu to 13.10 then upgraded gnome to 3.10. Upon restarting, it brings me to the gnome log in screen (GDM) and all I see is the top banner part so like your date, music volume, option to restart, suspend or shutdown. Hitting control+alt+delete tells me gnome display manager will log out - it does but still nothing. I am on the log in screen, but there is no user to select, like there normally is or was. I can boot into safe mode and drop down to shell but I am not sure what commands I would enter to get the login screen back. I am using the gnome PPA's and the "unstable" PPA, so I expected issues, but not this - ideas?

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  • Generating CMakeLists.txt

    - by vanna
    I got a bunch of C++ sources files and headers. They may use external libraries such as Boost e.g. I am interested in the process of building binaries for Windows and *nix. Makefiles (*nix) and .vcproj (Windows) call compilers with some specifications such as the order of compilation, compilation options and stuff. CMakeLists.txt can be used by CMake to build either makefiles or .vcproj and use very helpful commands such as recursive search of files, automatic linkage with known libraries, installers, variables that can be used in source files... Is there any existing tool that would generate a CMakeLists.txt from specified options ? Options could be like : scan this folder and make a library out of it, then scan this other folder and make an executable and automatically link both with Boost as well along with a user friendly installer with generated INSTALL.txt and README.txt. Something very powerful like that.

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  • I cannot login to my ubuntu admin!!!! HELP!

    - by Spinz01
    I used lightdm to hide the users at the login prompt of ubuntu and it hid my account. The only one visible is "other" and it doesn't even have a known password. So, I have accessed the terminal and created a guest account and another account without passwords and they are not visible. I am new to using the terminal so I don't know how to write the commands for either: making all users/accounts visible to the login and/or making the guest accounts visible, and then once in the GUI change the login settings to see my admin account. I have no idea of what else I could do, or even how to do it. I would appreciate any help, I'm in a desperate situation because I really need to access my desktop! THANK YOU!!! Any ideas are appreciated!!!

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  • Syanptics Touchpad Won't Re-enable

    - by user71607
    I disabled my Synaptics touchpad while a key on my keyboard and now I can't get it to work again. When I press that key again it says the touchpad turns back on but will not work at all. Rebooting doesn't help, and I tried installing touchpad-indicator but when I try to enable from there it says that it enables, but the icon remains like it's disabled. The odd thing is that it works on the lock screen so I know the drivers aren't messed up, it's just a setting. Also, the touchpad works on guest mode but still nothing on my account. I tried using gconf to set the touchpad_enable to true and it worked, it sure set it. Doesn't make a difference though, my touchpad is still useless. Terminal commands I've used: gconftool-2 --set --type boolean /desktop/gnome/peripherals/touchpad/touchpad_enabled true synclient Touchpadoff=0 modprobe psmouse

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  • why opening a port is so difficult in ubuntu?

    - by icn
    I have searched around and I have run these commands iptables -A INPUT -p tcp -d 0/0 -s 0/0 --dport 5432 -j ACCEPT iptables-save > /etc/iptables.rules And I rebooted the box. I had no luck. What am I missing? IS there a universal way to do this thing in ubuntu? I remember in fedora I just need to edit a text file and make it happen. Thanks UPDATE I have run ufw allow 5432 and I ran ufw status I got this result Status: active To Action From -- ------ ---- 5432/tcp ALLOW Anywhere 80 ALLOW Anywhere 22 ALLOW Anywhere 5432 ALLOW Anywhere 5432/tcp ALLOW Anywhere (v6) 80 ALLOW Anywhere (v6) 22 ALLOW Anywhere (v6) 5432 ALLOW Anywhere (v6) I still cannot access 5432!

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  • Terminal echo issue

    - by user107602
    I've been using Ubuntu 10.04 LTS for a while, am quite new, using the terminal, made a script to open a project of mine containing multiple files with gedit - after execution of the respective script - gedit [filename1] [filename2] ... , terminal executes it successfully, gedit opens passed files and terminal is ready for another line. Well, today I came across a strange issue - after the execution of the above mentioned script, gedit initiates successfully, but terminal denies execution of commands and echoes all keyboard events, even specific ctrl+... functions - all until gedit is closed. I can't figure what caused this as my recent activity was focused around a C project, not regarding the terminal in any way. I recall being able to execute another line after initiating e.g. open gedit and compile a project within a single tab and session of a terminal window. Any help would be appreciated! Regards!

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  • Why Ubuntu always force itself to be in 1440x900 resolution?

    - by rainlover
    My screen's resolution is 1024x768 and when I installed Ubuntu it was forcefully in 1440x900. I changed it in my account and again I've to change it in another standard account. I don't know any way to change it in login screen. Also when shutting down that black screen with some commands also appears in 1440x900. I don't know why Ubuntu force itself to be in 1440x900. I want 1024x768 in whole way. I don't know whether it is required but I have Intel chipset 128 MB.

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  • "main.exe" Has Crashed Error [migrated]

    - by JRuxDev
    I have a programming project due today and I am having a simple error. The project is to create a skeleton of a basic menu. The new command just counts from 1 to an integer entered by the user. Before I continue, I have posted a link to the pastebin that holds my .cpp file: http://pastebin.com/pAi9EiEi The rest of the program runs and works. However, the error is simple. It is crashing as soon as I type in any of the commands. After running error checks, I have found the error is not the while but the if statements. The error is on the lines similar to this: if (stricmp(strstr(newCommand, cmd2), newCommand) == 0) What this line is supposed to do, is copy what is in cmd2 and put it in newCommand then comparing it without caps sensitivity to: char newCommand[] = "new"; Thank you, Rux

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  • Using multiple servers for hosting [on hold]

    - by foo
    I need help understanding the concept of using multiple servers (for hosting at home). More specifically multiple WAMP servers. (I have tried looking online but have found no good resources, maybe i am searching for for the wrong things to answer my questions) Questions -How do multiple servers work together? -Do they all have their independent hard drives storing different information? and if so, does the server dynamically locate files? -How do shell commands get executed? -How do they share the "load"? i.e. processing power, resources? Please tag links to resources so i may use a reference. Cheers!

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  • WPF Binding KeyDown event to Command

    - by Daniil Harik
    Hello, I want to bind KeyDown event handler (when user presses Ctrl+C and Ctrl+V) on Telerik's GridView to RelayCommand object in my ViewModel. I know about this post http://blog.functionalfun.net/2008/09/hooking-up-commands-to-events-in-wpf.html But I'm still bit confused about implementation of my scenario. I just don't understand how it works. Could someone point out how should my scenario be implemented. Thank You very much!

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  • python numpy roll with padding

    - by Marshall Ward
    I'd like to roll a 2D numpy in python, except that I'd like pad the ends with zeros rather than roll the data as if its periodic. Specifically, the following code import numpy as np x = np.array([[1, 2, 3],[4, 5, 6]]) np.roll(x,1,axis=1) returns array([[3, 1, 2],[6, 4, 5]]) but what I would prefer is array([[0, 1, 2], [0, 4, 5]]) I could do this with a few awkward touchups, but I'm hoping that there's a way to do it with fast built-in commands. Thanks

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  • iPhone speech recognition API?

    - by CaptainAwesomePants
    The new iPhone 3GS has support for voice commands, stuff like "call Bill" or "play music by the strokes" and whatnot. I was looking through the iPhone SDK, but I cannot find any references to this capability. All of the search keywords I choose seem to only find the new voice chat functionality. Does anyone know whether Apple has added voice command APIs to the SDK, or whether it's yet another forbidden API? If it does exist, could someone point a particular class out to me?

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  • Importing matlab functions in matlab

    - by Krt_Malta
    Hi, I have some Matlab functions defined in .m files and I'd like to import them into Matlab (as in I'd like them to form part of the commands). Is this possible please and how can I do this? Thank you very much and regards, Krt_Malta

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  • keytool.exe is not a valid win32 application MD5, access denied

    - by user1015086
    Whenever I use any of those commands, I get "keytool.exe is not a valid win32 application" error, even when I open keytool.exe independently as an exe file. C:\Program Files(x86)\Java\jre6\bin>keytool.exe -list -alias androiddebugkey -keystore "C:\Users\ti7a\.android\debug.keystore" -storepass android -keypass android keytool -list -keystore "C:\Users\ti7a\.android\debug.keystore" C:>cd C:\Program Files\Java\jre6\bin keytool -list -alias androiddebugkey -key store "C:\Users\ti7a\.android\debug.keystore" -storepass andro id -keypass android

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  • Defining a ContextMenu in a DataGridRow style

    - by Brent
    I'm trying to clean up some of my xaml in my views by moving a lot of the DataGrid styles into a ResourceDictionary. One of the things I'd like to move is the ContextMenu that is bound to some commands in the ViewModel. However, when I move the context menu to the ResourceDictionary, the commands are are never firing anymore, and I can't figure out why. I've defined the ContextMenu in the DataGridRow style so that when the user right clicks on the columnheader, no ContextMenu is shown... it will only be shown they right click on a row. Am I doing something wrong here? FYI I'm using VS 2010 RTM if that makes a difference. <Style x:Key="DataGridRowStyle" TargetType="{x:Type DataGridRow}"> <Setter Property="Height" Value="20"/> <Setter Property="ContextMenu"> <Setter.Value> <ContextMenu> <MenuItem Header="New" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.NewCommand}"> <MenuItem.Icon> <Image Source="/Images/DocumentWhite(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Open" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.OpenCommand}"> <MenuItem.Icon> <Image Source="/Images/FolderOpenYellow(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> <MenuItem Header="Delete" Command="{Binding RelativeSource={RelativeSource AncestorType=DataGrid}, Path=DataContext.DeleteCommand}"> <MenuItem.Icon> <Image Source="/Images/Delete(32N).png" Width="16" Height="16"/> </MenuItem.Icon> </MenuItem> </ContextMenu> </Setter.Value> </Setter> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Background" Value="{StaticResource hoverGradient}"/> </Trigger> <Trigger Property="IsSelected" Value="True"> <Setter Property="Background" Value="{StaticResource BtnOverFill}"/> </Trigger> </Style.Triggers> </Style>

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  • Labview String output

    - by hkf
    How do I send a string output from a DAQ Board (NI- USB 6259) using labview? I want to send commands such as " CELL 0" or "READ" to a potentiostat device using labview. Thanks

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