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Search found 304 results on 13 pages for 'headless'.

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• Load balancing on Ubuntu Server

  - by SabreWolfy

  I have Ubuntu 10.04.4 server (32-bit) installed on a headless quad-core machine with 2GB RAM. I'm running a command-line analysis which is analyzing a large amount of data, but which does not require a large amount of RAM. The tool does not provide any multi-threading, so the CPU load is sitting at 1.00 (or sometimes just a little over). I ran top and pressed 1 to see the load on each of the cores and noticed that "Cpu1" is always running at 100%. I thought that the load would be distributed between the cores, rather than loading one core all the time. I'm sure I've seen this load-balancing behaviour before in Ubuntu or Debian Desktop versions. Why would the Server edition work differently? The analysis will likely take several hours to run, so loading one core at 100% for many hours while the other 3 remain idle is surely not the best approach?

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• Package dependencies cannot be resloved?

  - by Hayden Win

  i was in the ubuntu software center, and when i try to install something like OpenJDK, i get an error saying: Package dependencies cannot be resolved This error could be caused by required additional software packages which are missing or not installable. Furthermore there could be a conflict between software packages which are not allowed to be installed at the same time. When i click on "Details" it shows this: The following packages have unmet dependencies: openjdk-6-jre: Depends: openjdk-6-jre-headless (>= 6b24-1.11.1-4ubuntu2) but 6b24-1.11.1-4ubuntu2 is to be installed Depends: libjpeg8 (>= 8c) but 8c-2ubuntu7 is to be installed Depends: libpulse0 (>= 1:0.99.1) but 1:1.1-0ubuntu15.2 is to be installed How do i fix this, and what's caused this problem in the first place?

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• How do I access my remote Ubuntu server via X-windows from my Mac?

  - by Magooda

  I have an Ubuntu server (12.04 LTS) running remotely on a cloud hosting service. I have installed ubuntu-desktop via apt-get: $ sudo apt-get install ubuntu-desktop It appears to have installed no problem. I have confirmed that /etc/ssh/ssh_config on the server contains the lines ForwardAgent yes ForwardX11 yes ForwardX11Trusted yes and that /etc/ssh/sshd_config on the server contains the line: X11Forwarding yes I then rebooted the server. It came back up no problem. Now, starting X11.app on my Mac I am presented with an Xterm. I connect to my server from this terminal using: $ ssh -X <myhost> and I connect to the server, no problem. At this point I don't know what to do. I have tried $ sudo startx but I get a "no screens found" error. I don't have screens because its a headless cloud server, but I just want to acces it from my Mac through X. What now?

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• Power Management - Sleep / Wake up Server when accessed

  - by KP65

  I have a headless HP Proliant Microserver with ubuntu installed. This machine has samba shares on it serving media and I usually rdp or ssh into it. Now my issue is I want the machine to go into sleep mode(so the state is saved from ram to the harddrive) and it will seem like it is turned off after an hour of idling. If there is any attempt to access the samba share through LAN I would like it to wake up. Now my motherboard supports this function, can anyone point me in the right direction for achieving this easily? Thanks

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• How to list Windows shares from terminal?

  - by Zabba

  Here is a simple scenario I have: Windows 7 is sharing a folder (D:\Projects). Full Control permissions have been given to the folder. In Ubuntu 10.10, I can see the Windows shares from Places - Network menu. I can create a folder in the shared Projects folder from Nautilus How do I ls those same folders (displayed in Nautilus) from the terminal? (mount and ls /mnt do not list those Windows shares) Ps. Details on what I am doing: Using Ubuntu as a "headless" VM using VirtualBox. Accessing Ubuntu via PuTTY Ability to give complete access to the Ubuntu VM for the Windows shared folder

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• Do I need any additional Java packages if I'm running the Oracle JRE?

  - by George Gorski

  I am running the Java 7 JRE from Oracle. I installed it through terminal and it works properly with my web browsers, and otherwise, as far as I can tell. However, I was browsing through my installed packages in Software Center, and noticed that both the 'openjdk-7-jre-lib' and 'openjdk-7-jre-headless' packages were still installed from when I had the OpenJKD JRE installed, which I have since uninstalled, but did use for a good period of time before I switched. Should those be there, or might they cause complications if I leave them installed? Or would it be best to leave them installed?

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• 12.04 x64 Server Login Failure

  - by ThoughtCoder

  After some serious GRUB issues after routine kernel updates, forcing a grub-reinstall via chroot and some single-user mode maintenance, I now cannot login to my server (except via single-user mode) When attempting to SSH to the server my connection is reset immediately after entering username - no password prompt is presented. I've plugged in my monitor and keyboard to the headless server and when trying to login I receive: login: "PAM Failure, aborting: Critical error - immediate abort" immediately after entering my username - again, no password prompt is displayed. I am able to gain access via kernel recovery mode and login as root through single-user mode with networking. I've attempted a dpkg reconfigure believing I may have had some incomplete/borked packages, but to no avail. Looking through /etc/pam.d/login doesn't seem to lead me in any obvious directions and I'm afraid I'm out of ideas. Googling doesn't help me much, one guy reinstalled (really don't want to do this) and the rest I could find were old Gentoo related bugs. Any tips?

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• What set of tools make up "the rails way" of testing javascript in the browser?

  - by Jordan Feldstein

  What's the concensus for doing in-browser (either headless or remote-controlled) testing of javascript? Unit testing my JS is nice, but can't protect against irresponsible changes to the DOM. Unit testing of the JS and functional testing of the views to make sure they both provide and utilize the same, correct DOM, might work, but then the link between JS and DOM is being covered in two places which seems brittle or cumbersome. Is there an acknowledged "Rails Way" to implement full-stack tests, where I can run my javascript against the DOM rendered by the rest of the app, and check the results? (Something like what PHPUnit and Selenium give us, but inside the rails framework?)

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• Resize a 2TB partition on a 3TB disk created with fdisk

  - by mR_fr0g

  I recently added a new 3TB hard drive to a headless media server (HP proliant microserver) running Ubuntu server 12.04. I followed this tutorial, which uses fdisk to create a single partition of the maximum size reported by fdisk. I have choosen ext4 format. I then copied across all my media, which took some time. I am guessing that fidisk has a 2TB limit, because du is reporting this as the size. Is there any way to increase the size of the partition to 3TB without having to copy all my media over again?

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• How to set up Ubuntu Server as a NAS?

  - by rifferte

  I am looking to set up Ubuntu Server as a headless NAS for my home. I would like to have file storage there, as well as a central hub for my MP3s and pictures. What are the best packages out there to handle this? Can someone post a link to a good tutorial or post some tips? One constraint I have is that it has to be Windows 7 friendly. By that I mean the shares and streaming should work for a Windows machine.

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• Free course on Java Embedded on the Raspberry Pi?

  - by A Tael

  Oracle is developing a free, on-line course on developing Oracle Java Embedded applications using a Raspberry Pi as the development platform. The course teaches experienced Java SE developers how to design and develop applications using Java ME Embedded 8 EA on a Raspberry Pi with physical devices, including: switches and Light Emitting Diodes (LED); temperature/barometric pressure sensors; Global Positioning System (GPS) sensors; and system interrupt timers. Additional modules include logging, threads, network I/O, file I/O, record management service, push registry, application management services and best practices for headless embedded devices.Sounds like great fun doesn't it? Read more about the course and give us your feedback in this short survey. <<Andy>>

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• Trouble installating openjdk6 on 12.04 LTS

  - by Lost

  I tried to install openjdk6 on 12.04 LTS, with the command: sudo apt-get install openjdk-6-jre but got the following error: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: openjdk-6-jre : Depends: openjdk-6-jre-headless (= 6b24~pre1-1ubuntu3) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Please help. Thanks!

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• Screen capturing Flash

  - by stevebot

  Hey everyone, Is there a way to play a SWF and screen capture it in a headless environment? Thanks!

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• Convert PPT to PNG via python

  - by uswaretech

  I want to convert PPT to png, or other image formats using Python. This question has been asked on SO, but essentially recommends running OpenOffice in headless X server, which was an absolute pain last time I used it. (Mostly due to hard to replicate bugs due to OO crashing.) Is there any other way, (Hopefully using Linux CLI utilities only, and pure Python above them?)

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• .net equivalent of htmlunit?

  - by mike

  Does anybody know if there is a .net equivalent of htmlunit or similar library? I've heard that people have used IKVM to convert the htmlunit library. But I have also heard that the converted code is slow. Requirements: Headless browser Support javascript Handle cookies .Net

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• Using PyUNO on Windows and CentOS

  - by Karim

  Is there any way to use OpenOffice's PyUNO without using the version of Python that comes with OpenOffice? I mean, can I install a package (on Windows and CentOS) that uses the version of Python that's already on the server? I'm trying to use OpenOffice in headless mode so that I can do document conversion with a script (ultimately on a hosted server running CentOS) but my development work is being done on Windows and occassionally the Mac). I'm having nothing but trouble getting this to work.

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• Simple startup on boot of misc application (Java based) on Ubuntu Linux 8+ as a daemon

  - by Berlin Brown

  What is the easiest way to have an application launch at startup on Ubuntu server as daemon? This is a java application (java com.run.run.Run) etc. How would I have it launch as a user and possibly have access to write to some log file where the user has permissions to write? And if I don't end up doing that, how would I launch the application as the root user at startup. Edited: It is a headless server, I don't have access to the desktop applications.

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• 2nd Year College - Learning - Microsoft Server Products

  - by Ryan

  As the title says, I just finished my first year of college (majoring in Software Engineering). Fortunately my school likes Microsoft enough, and I can get pretty much anything I want that Microsoft sells. I also can get IBM Websphere and the like for free as well. Earlier this year, I set up an oldish computer (2.6 Pentium D, x64) to run ubuntu server headless. I'm predominately a Java developer, so Apache, Maven, Nexus, Sonar, SVN, etc made it onto the machine. It worked really well for personal and school projects, especially team projects (quick ramp up). Anyways, I started to pick up C# to complement my Java knowledge (don't judge me :P), and am interested in working with some of the associated Microsoft equivalents. The machine currently has the Ubuntu install, as well as Windows 7 Ultimate. I do all of my actual development work off my laptop, also running Windows 7 Ultimate. I was wondering what software you would recommend putting on the machine. I’m not actually serving anything off the machine itself, but in Ubuntu I had it doing integration tests with Hudson on every commit, and profiling my applications, etc, etc. The machine would be running headless, and I would remote into it. Here is what I am currently leaning towards / wondering about: Windows 7 Ultimate vs Windows Server 2008 (R2) (no one is really clear why I should go with one over the other) Windows Team Foundation Sharepoint (Never used it before, kind of meh about it) IBM Websphere or Glassfish (Some Java EE web server) SQL Server 2008 A DVCS In order to better control product conflicts / limit resource use, I’m wondering if I should install things into virtual machines (I can get VmWare or Microsoft Virtualization Products) I also plan on installing everything I had running under Linux (it’s almost entirely Java based development software, so it’ll run on both, only reason I went with ubuntu during the year was because the apache build seemed better). I’m primarily looking to become familiar with enterprise software development tools, as well as get something functional that will help my development process. (IE, I’ll still use project and assign tasks even though I might be the only one to assign tasks to, just to practice doing so). Is there any other software / configuration details I should explore? Opinions on my current list? I primarily use C#, Java, and PHP. I'm familiar with ruby, and python as well. Thanks!

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• Close Eclipse Application Programmatically

  - by Mario Ortegón

  I have an Eclipse Application that I want to close. The catch is that it is a headless application, so I can not use the following method: PlatformUI.getWorkbench().close(); What alternative can I use to close the application cleanly?

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• How do I use python-webkit2png to take many screenshots at the same time?

  - by oldfellow

  I've got thousands of urls from many hosts I need to screenshot. I can use the lib fine from the command line, but how can I integrate it into my code so I can take multiple screenshots simultaneously? I think it's something to do with xvfb as with the answer to this question: http://stackoverflow.com/questions/1747022/how-to-kill-headless-x-server-started-via-python but I'm not sure what exactly.

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• Boot from USB on MediaSmart EX485

  - by Matt Hanson

  I have an HP MediaSmart EX485. I'm attempting to install Vail on it with a USB flash drive and this guide: http://www.mediasmartserver.net/2010/04/26/how-to-install-windows-home-server-vail-on-the-hp-mediasmart-server/. I'm having issues getting the server to boot from the USB flash drive. The MediaSmart itself being headless doesn't help matters. The flash drive has an LED on it for disk activity, and I'm able to see that it's detected when the server is powered on, but it's definitely not booting from it. Any ideas?

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• Ubuntu mount hard drive confusing

  - by Fresheyeball

  I'm new to linux and have a home server set up running ubuntu. In the ui its very easy to mount my additional internal harddrives. I just double click on them. Since I have made this server headless, I now need to mount via the command line. How can I replicate the very simple double click gui behavior? So far all the information I've found is very complex. Ubuntu auto generated folders for each hd in under /media and I can see the harddrives under /dev but have no idea which is which as the hardware is identical between them. I also don't know how they are formated. Thanks in advance for any advice you have.

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• ClearOS - how to avoid getting stuck at a fsck message at boot?

  - by Scott Szretter

  I have had this happen a couple times - I have a ClearOS Enterprise 5.2 box, and due to a power outage or similar, it ends up showing an error at boot and saying that fsck needs to be run (I think it said with (or without?) the -a parameter). The problem is, I need this box to be headless, at a remote location (miles away)! SO, I need to come up with a solution on how to either have it automatically repair itself, without someone to be present with a monitor and keyboard. Another possibility is to simply avoid the issue all together - maybe there is something that can be changed so it's very unlikely to happen (I am unable to avoid the power outage of course - at least not practically). Finally, maybe it can be boot off a read only media (cd) or file system or similar? At least the base OS, so that it would always at least boot with enough configuration that might allow remote access, or basic connectivity?

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• What is the best way to hide a command prompt window

  - by detj

  I'm running the headless interface of VirtualBox (VBoxHeadless.exe) with Ubuntu Server running on it. Every time I run VBoxHeadless, it starts a command prompt window which just sits on the taskbar taking space which could have been used by more useful programs. I want to hide this non-functional command prompt window (minimize to system tray or anything that just removes it visibly). How can I do this? It would be really cool, if this can be achieved without installing any 'minimize to system tray' utility. Any ideas??

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• Windows Server 2008 R2 - What now?

  - by MrStatic

  So I installed Windows Server 2008 R2, I have Exchange 2010 running for some mail. I installed BlackBerry Enterprise Server Express for kicks. This server runs dns/dhcp for 2 laptops. But what now? It has 200g's free on the main drive and a 150g external that I have mapped as a network drive. I am not sure what else to do with this thing. It was my main station but since my laptop is nicer I am running it headless and using the lcd monitor for it as a second monitor for the laptop when I am at home.

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