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  • How to protect Ubuntu from fork bomb

    - by dblang
    I heard someone talking about a fork bomb, I did some research and found some dreadful information about some strange looking characters people can have you type at the command line and as a result do bad things on the computer. I certainly would not issue commands I do not understand but one never knows what can happen. I heard that some OS allows the administrator to place some limit on user processes to mitigate the effects of fork bombs, is this protection in Ubuntu by default or would a person with sudo privilege have to set this? If so, how?

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  • Array manipulation in gsettings' set command

    - by Daniel
    Is there an easy way to do array manipulation in gsettings? I am comparing gsettings to OS X's defaults command that offers the defaults domain --array key overwrite-value and defaults domain --array-add key added-value interface for manipulating arrays. As far as I can tell there is only gsettings set domain key "['overwrite-value']" available to gsettings. Not really pretty for when you want to add or remove one entry from an array. I have seen a suggestion that allow me to add to an array, but I would rather use a interface if there is one.

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  • How to reduce fan noise with some latest Dell laptops, Desktop PC's?

    - by YumYumYum
    I have a few new Dell laptops and desktop PC's. Some of them have extremely noisy fans. The technicians who are sent by Dell refuse to attempt to fix things when they see that the OS is Ubuntu. They seem to be comfortable dealing with machines running MS Windows. For Linux, is there any way to slow or lower the fan speed? Please can anyone advise how it should be done. I have tried lm_sensors but failed.

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  • MonoDroid est disponible gratuitement, en version de test avant la mouture finale payante

    MonoDroid est disponible gratuitement, en version de test avant la mouture finale payante Mise à jour du 06.01.2011 par Katleen En mars dernier, nous vous parlions déjà du projet MonoDroid (voir news précédente), cet outil dont le but est de permettre aux développeurs de travailler sur .Net depuis Android (et sous d'autres systèmes pour ses autres versions) grâce à une totale disponibilité pour eux des APIs de l'OS de Google. Sa preview était très attendue. Figurez-vous que la voici, enfin. Elle permet d'utiliser les librairiesOpenGL et OpenTK et de compiler du code à la volée (en cas de code natif). Elle offre également un kit de développement complet en ligne de commande (compatible...

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  • Systray Icons missing after App Crash

    - by pr0ndigy
    After installing Alarm Clock (alarm-clock) from the Software Center, the program immediately crashed and made the icons in my systray disapear except for Power, Sound, Time/Date, and the Gear. I tried logging off, rebooting, removing the program, and nothing has brought my icons back. I know they are still running up there, because i got Skype setup to autostart and it had an icon up there running before i installed the Alarm Clock program. Is there anything i can do to get my icons back, or do i need to reinstall the OS? I'm running Ubuntu 14.04.1 btw...

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  • G5 quad core will not boot from Ubuntu CD

    - by Steve Howard
    I have a PPC G5 Quad Core with Leopard on one hard drive and I want to install Ubuntu on a second hard drive. The second drive is installed and formatted as a Mac OS Extended (Journaled) drive. I have had no success booting from a CD or DVD with various PPC versions of Ubuntu using any of the suggested keys such as "C, Option, or anything else. Booting into open firmware doesn't work as the system can't find the \install\yaboot file. I am using various CD's burned as iso disk images, but none will boot. I have reset the PRAM, etc, to no avail. Beginning to get very frustrated. Can someone shed some light and provide me with a command line in open firmware that will work, or else direct me to a confirmed PPC bootable version of Ubuntu please? I'd appreciate any help you can provide....

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  • How to remove shells?

    - by MyNameIs...
    I installed few shells that I wanted to try out on Ubuntu 12.04, but none of them worked at all. It could be that I installed them all at the same time, meaning the OS didn't get a chance to work everything out, but either way, they didn't work. I would now like to remove them. The one's that I installed are Fluxbox, OpenBox, XFCE, and MATE. I installed them through the help of this site. Everything seemed to have been working properly until I actually tried to use the shells and nothing loaded at all. Except for Fluxbox, I think that one worked. I want to know of any way to repair or perhaps just remove the packages entirely. I might have already removed them because I did the apt-get remove command on all of them, but they were still in the list on the login screen.

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  • Does Windows 8 still support DirectX 9?

    - by SullY
    Is Windows 8 supporting DirectX 9? Because I was looking through some samples written in C++ and DirectX 9 made for Windows 8. It wasn't that, like I know it ( look here http://directxtutorial.com/Lesson.aspx?lessonid=111-4-2 ). E.g. Inizialising DirectX with COM: ComPtr<ID3D11Device1> dev; ComPtr<ID3D11DeviceContext1> devcon; It's just weird because I know it with the old way: ID3D11Device *dev; ID3D11DeviceContext *devcon; ( I hope you understand what I want to tell ) I hope it hasn't change completely due the released their new OS.

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  • Errors with linux-image-3.8.0-36-generic and GRUB

    - by user285239
    OS: Ubuntu 12.04 LTS Problem 1: When installing anything (or updating) it always ends with this error: Errors were encountered while processing: linux-image-3.8.0-36-generic linux-image-3.8.0-38-generic linux-image-generic-lts-raring linux-generic-lts-raring Problem 2: When installing or updating stuff it opens some grub files and halts execution until I close these grub files. See screenshot below. Grub files + terminal window (screenshot) Pastebin with terminal output while trying to install something I should mention that I don't known if these two errors are related, but it is a fact that every time I try to install something or run an update both of the above errors pop up. I couldn't find anything of interest in the logs I looked at (probably because I don't know what/where to look), but tell me if you need me to upload something. Edit 02 june. This is the output from lsb_release -a kasper@ubuntuRW:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 12.04.4 LTS Release: 12.04 Codename: precise

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  • How to completely turn off session saving?

    - by Thorn
    Hi all, I opened System > Preferences > Startup Application > Options and clicked on Remember currently running Applications. I suppose this makes Ubuntu memorize (save a list on some place in disk) all currently running applications and when you reboot your computer, the OS starts with everything in that list. Now I want to get rid of it. Of course I can close all applications which I do not want to start in startup, and click Remember currently running Applications again, but this doesn't seem to work as expected. For example, Yakuake opens differently if I do that. What I want is to completely turn off session saving. Maybe I can delete the stored information somehow?

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  • Questionable ethics regarding closed source softwares which are supposed to be open source.

    - by edem
    Several days ago I heard a sentence "Cracking company name routers are not a crime.". I asked "Why?" and the guy explained to me that company name used a linux distribution on their routers which source can not be closed because of their license but company name closed it. What do you think about this? Doing otherwise unethical "cracking" becomes ethical, or somewhat neutral if the software in question is "cracked" too? By "cracking" I don't mean breaking into a computer through someones' company name router but "cracking" my own router's OS which otherwise would be unethical.

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  • Custom trackpad mapping doesn't work for all applications

    - by picheto
    I found out I could invert my trackpad scrolling, so as to work more like the OS X "natural scrolling", which I liked better. To do that, I run the following command on startup: xinput set-button-map 11 1 2 3 5 4 7 6 Where 11 is the touchpad id (found with xinput list and xinput test 11). This inverts the vertical and horizontal two-finger scrolling, and works fine in Terminal, Chrome, Document Viewer, etc. However, it doesn't work in Nautilus and some applications such as the Update Manager, as they keep the usual mapping. I'm running Ubuntu 12.04 x64 Why does this mapping work for some applications but not for others? I know there is software I can download to do the same, but this method seemed "cleaner". Thanks

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  • Why is my LAN not working properly ?

    - by ps06756
    I am using Ubuntu 12.04 as my OS. Till yesterday, my LAN was working fine , but after that my LAN is not working properly. What I mean is that it shows that the LAN wire is connected properly, but when I try to open a website it gets stuck on resolving host. I am using the web browser as Google-chrome. Now, when I manually switch off the wired connection and turn it on again, the LAN works perfectly till I open one or two webpages. After that the same problem repeats again. Can anybody, help me with a solution to this problem.

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  • Major problem with Nvidia drivers

    - by user38580
    Since I decided to use Ubuntu -yesterday- I've been struggling with the drivers. It isn't recognizing my optical disc drive nor my video card, a Nvidia 8500gt. For the matter, here's how I "successfully" installed the .run driver downloaded from Nvidia's website: The terminal wouldn't let me start the installation because the X server had to be shutdown, so I pressed Ctrl+Alt+F1 Then, I used: sudo service lightdm stop cd /(directory where the nvidiaupdate.run was) chmod +x nvidiaupdate.run sudo ./nvidiaupdate.run The installation began and got completed, but unfortunately it crashed Ubuntu's UI, invalidating the OS for me. All that would appear was a DOS-like screen with reports. I'm new to Linux, so I really would appreciate any help given. For now, I'm sticking to the additional drivers, but even with it Ubuntu doesn't show my video card in the informations of the system. Forgive my bad English.

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  • Effective way of keeping past projects with their working development environment?

    - by Korey Hinton
    I find that whenever I want to go run a past project, it will take a long time before I can find it and before I have everything set-up again for it to be able to run. For example, I have python projects I created in Linux, and it depends on software packages that are easily installed in Linux, yet I no longer have the Linux VM I was using. And some of my other projects depend on other variables like web server configuration, PATH variables, sdk, IDE, OS version, device, etc. Does someone have an effective way of handling this issue? As of now I have only concerned myself with keeping the source code backed up yet it is difficult re-establish the working development environment and it is also difficult to keep the working development environment around as well.

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  • Unable to mount location, Can't mount file

    - by user116008
    I'm a new user to Ubuntu and I have a problem: I had Windows XP in my computer and I had two partitions: C (for system data) and D(for my personal stuff), then, during the Ubuntu installation I chose the Advanced Settings and formated C partition and left D partition intact, went back and chose Install Ubuntu and replace Windows and it installed fine. The problem is that now I open Nautilus and go to Computer, in there it shows my D partition, 640 Hard Disk, but when I try to mount it displays me a message: "Unable to mount location. Can't mount file". I ask you to explain me step-by-step what I need to do because I'm not an advanced user. My computer specs: 2 GiB RAM, Proccesor Pentium(R) Dual-Core CPU E5400 @ 2.70GHz × 2, Graphics Unknow (It's Nvidia GeForce 220 {1GB} or something), OS type 32-bit, Disk 628.0 GB P.S.: My HDD is internal, I'm not using external Hard Drives. Thank You!!! Mike

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  • How can I my video card work on Ubuntu 12.04?

    - by Cyriak Burton
    I've recently installed Ubuntu 12.04 on my desktop computer. In order to install Ubuntu, I had to unplug my video card because It was giving me problems, didn't allow me to install Ubuntu. So I unplug it, installed Ubuntu anyway, everything worked as charm, but now and I need to plug it again, but it doesn't work. Here some photos of the problem: Screenshot of the problem #1 Screenshot of the problem #2 Appear that screen and nothing else... I didn't install any driver (I'm kinda noob), in Windows 7 all worked fine, so the problem is with Ubuntu, compatibility problem I guess. Video Card: Zotac GeForce GT 240 O.S.: Ubuntu 12.04 (w/GNOME 3.2) Memory: 2 Gb HDD: 110 Gb Processor: Intel Pentium D 2.80 Ghz PLEASE HELP!!!

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  • How often should saving to disk occur in an automatically saving text editor?

    - by lelandmiller
    I am developing a simple text editor and would like the application to save the text automatically. In other words, the user would never have to press a save button. I have seen other applications that do this, and was wondering how often is it safe to write files to disk? From a user experience standpoint, it seems that the more frequently this happens the better, but I am worried about performance and possible disk wear (especially on writes to SSDs). It seems like the operating system disk caching might help avoid these problems, but I also don't know if its safe to rely on that for an application like this. I was planning on writing the whole document to disk at each save, but this just seems terribly inefficient if the OS ends up writing it to disk to frequently, but relying on program unload may lose data in the case of a crash. Does anyone have any experience dealing with this that might be able to help?

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  • understanding computers [closed]

    - by Ashwin
    Possible Duplicate: Good resources to understand how a program interacts with machine hardware I don't know if this is the correct StackExchange site to ask this question. But I could not find any other. I want to understand how a computer works from the software level to the internal structure. For example what happens when I press a button on keyboard. The OS interprets it and then what changes happen in the flip-flops. How is an operating system written? If it is written using some programming language, then how is that interpreter written. At some point it has to come down to the hardware, right? I know to program in c, c++ and java. But after all these years I am still not sure about what is happening inside. I would be grateful to anyone who points me to to a link or a video that explains this to the deep.

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  • L'interface de Windows 8 se prénommerait Mosh, et un Windows App Store tournant autour de Jupiter serait en chantier

    L'interface de Windows 8 se prénommerait Mosh, et un Windows App Store tournant autour de Jupiter serait en chantier Mise à jour du 11.01.2011 par Katleen Beaucoup de personnes ont été déçues de ne pas voir la démonstration tant attendue de Windows 8 lors du CES de Las Vegas. Du coup, les rumeurs reprennent de plus belle ! Ainsi, le blogger Paul Thurrott se fait l'écho d'une information qui n'a toutefois pas été confirmée officiellement : apparemment, l'interface du futur OS s'appèlera Mosh. Elle ne sera pas grand public, mais spécifique aux appareils mobiles comme les tablettes et ceux fonctionnant avec un système Windows embarqué. De plus, il semblerait qu'un Windows App Store voie le jour, et il sera...

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  • boot loading problem after wubi installation of Ubuntu 12.04 on Win7

    - by user63085
    I was new in Ubuntu OS and I was just trying to use wubi windows installer to get a Ubuntu first for hands-on. I followed exactly the same as the instructions and after reboot win7, there is no Ubuntu selection in windows boot manager, with only Windows 7 showing there evilly -.- What I've found out was that the grub folder inside Ubuntu folder ( in my C:\ drive) was empty, either inside the ubuntu\disks\grub or ubuntu\install\grub. I thought this might be the reason why I could not load ubuntu during startup. Cause I've also looked into the EasyBCD settings, and ubuntu entry with Bootloader Path: \ubuntu\winboot\wubildr.mbr was lying there peacefully, looking perfectly fine. However it was not in boot loader actually. Is there a way to restore the grub folder with grub2, or is there any way to fix this problem so that I can find the "Ubuntu" selection at windows startup? Very appreciate your help :) Henry

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  • Is it Possible to Repair Boot Record on Windows Vista Partition on Dual Boot Ubuntu 12.04.02 LTS Install?

    - by PasBonRJB
    I recently successfully installed Ubuntu 12.04.02 Desktop as a "side-by-side" on an eMachines ET1641-02w PC; which before had Windows Vista; but was no longer bootable, because the boot sector somehow got trashed. After I installed Ubuntu I can go to Devices/OS and I can access all of my docs, pics, videos, music, etc. on the Windows Vista partition; but I still can't "boot" the Windows partition. I've seen several posts regarding recovering boot sectors using the Boot-repair app; but am wondering if this "boot-repair" is only for the Ubuntu partition. Can I use "boot-repair" to repair the Windows Vista boot sector?

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  • How to login after modifying ~/.profile wrongly

    - by Jasper Loy
    I did something very silly a few weeks ago. I wanted to add a path so that the OS could find some manually installed executable. Instead of typing 'PATH=xxx:$PATH;export PATH' at the end of the ~/.profile file where xxx is the directory in which the executable lies, I accidentally typed 'PATH=xxx;export PATH'. After I logged out I was unable to login anymore as I probably messed up the whole PATH variable and reinstalled the whole thing. My question is: is there a way of rectifying the situation if I happen to add the path wrongly (hopefully not!) in future?

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  • I installed Ubuntu alongside Windows but I can't see it in Windows' boot menu

    - by André Hallé
    I have a second machine where Ubuntu 12.04 LTS and Debian Squeeze are installed on the same HD and when I boot, I have this grub menu where I can choose which partition I will used. It works perfectly! But in my Windows environment that's another story. Now after making almost everything that I know, to make it work along Windows 7, there is no entry in the boot menu of Windows (I know, Ubuntu use grub but anyway there is surely a way to fix it, access it?). Why there is no Ubuntu entry? Why the installation gave me no error while I have this strange situation of having a "ghost OS" called Ubuntu installed somewhere in my second HD in a partition made especially for it and not being able to access it, starting it, having it working? Am I wrong? If I am, what's the problem? If I'm not, what's the need of Wubi?

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  • Windows 7 won't boot

    - by Johnny
    I installed Ubuntu from my live CD and chose to install it alongside Windows. Yesterday, everything worked just fine and I was able to boot from either OS. However today, only Ubuntu will boot and Windows 7 fails to start every time I attempt to (even after restoring my Windows 7 partition to the last known good date). What could have changed over night that caused this? I did install all the recommended updates for Ubuntu. Is my only option going to be to wipe my HDD and reinstall both Windows and Ubuntu?

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