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Change network card speed and duplex settings in Ubuntu

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If you want to change speed and duplex of your network card you have to use ethtool or mii-tool.ethtool can be used to query and change settings such as speed, auto- negotiation and checksum offload on many network devices, especially Ethernet devices. read more...
permapage | score:9328 | -gg234, November 18, 2010

Active Directory Integration with Centrify DirectControl Express on Ubuntu 11.10 (Oneiric)

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Centrify Express is a comprehensive suite of free Active Directory-based integration solutions for authentication, single sign-on, remote access, file-sharing, monitoring The #1 Choice for Active Directory Integration and cloud security for cross-platform systems. It is the quickest and most proven solution for integrating UNIX, Linux and Mac systems with Windows, and delivers more functionality and more to upgrade to when compared to other free offerings.

Many Ubuntu users and Administrators struggle with Active Directory integration. One approach that folks are using is the free offerings from Centrify Express. read more...
mail this link | permapage | score:9307 | -gg234, December 2, 2011

How to install Ubuntu Linux on the decTOP SFF computer

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I recently bought a decTOP small form factor (SFF) computer. My goal was to build a cheap, fanless, quiet, and low power consumption Linux server. For $99 plus the cheapest available shipping, $40, my machine arrived 11 days after I placed the order.

This is a tiny computer, about the size of a Mac Mini. But, because it has no fan, it runs a bit quieter and, with the help of a 1-watt, 366 MHz CPU, consumes only 8 watts. For comparison, the G4 Mac Mini consumes about 20-30 watts, depending on load.

The decTOP comes with 128 MB of RAM in its sole SO-DIMM slot and a 10 GB 3.5 inch hard drive. I understand that it's a simple matter to replace the drive and to upgrade the memory to a maximum of 512MB.

It also comes with no operating system and the ability to boot only from a USB drive. This article details the steps I used to build the USB boot/installation drive and install Ubuntu 6.06 on the decTOP.

There is another article -- with additional decTOP links -- here on installing Ubuntu 6.06 on the decTOP with the aid of a Windows system. Fortunately ;), I run Mac OS X and Linux (Ubuntu 7.04), so that article didn't work for me. I did the installation of the Ubuntu 6.06 LTS Server Edition using my Ubuntu Linux box and a 1 GB USB flash drive -- although a 512 MB USB drive should work as well.

  1. Download the Ubuntu 6.06 server ISO image from the Ubuntu download page. Depending on your plans for the decTOP, you might want to choose the desktop version. Unless you have already upgraded your decTOP's memory, however, you'll want to stick with the 6.06 releases.

  2. Install the mbr, mtools, and syslinux packages on the Linux system you'll be using to prepare the USB drive. If you run Ubuntu or some other Debian-derived system, the following commands may do the work for you.
    apt-get install mbr
    apt-get install mtools
    apt-get install syslinux
  3. Partition the USB drive with a single FAT-16 partition. I used the fdisk 'n' command to make the new primary partition 1. The fdisk 't' command can be used to change the partition type to FAT-16. My device name was /dev/sda.
    fdisk /dev/sda
  4. Make the FAT-16 partition the active partition. I used the fdisk 'a' command.

  5. Install a master boot record on the USB drive.
    install-mbr /dev/sda
  6. Install syslinux on the USB drive. Note that the USB drive should not be mounted when you do this.
    syslinux -s /dev/sda1
  7. Create a mountpoint and mount the ubuntu ISO image using the loopback device.
    mkdir /iso
    mount -o loop -t iso9660 ubuntu.iso /iso
  8. Create a mountpoint and mount the USB flash drive.
    mkdir /usb
    mount /dev/sda1 /usb
  9. Copy the contents of the ISO image to the USB drive. This will take some time.
    cd /iso
    cp -r . /usb/
  10. Copy the /usb/dists/dapper directory into a new /usb/dists/stable directory.
    cd /usb/dists/
    cp -r dapper/* stable
  11. Copy several files from /usb/install to the /usb root directory.
    cp /usb/install/vmlinuz /usb/
    cp /usb/install/mt86plus /usb/
    cp /usb/install/initrd.gz /usb/
  12. Install the following text into a file named syslinux.cfg in the /usb root directory.
    default vmlinuz
    append initrd=initrd.gz ramdisk_size=24000 root=/dev/ram rw
  13. Flush all writes, unmount, and remove the USB drive. After the sync step, wait for all of the data to be written to the USB drive.
    sync;sync
    umount /usb
  14. Connect the ethernet adapter to the decTOP and connect it to your network to allow automatic configuration of the network interface.

  15. Insert the USB drive into the decTOP and power it up. The decTOP should automatically boot from the USB drive and start the Ubuntu installation.

  16. Answer only the first two questions concerning language selection and go to the next step, below.

  17. Press Alt-F2 (hold down the Alt key and press the F2 function key) to open a shell. Then press enter to start the shell.

  18. Create a /cdrom and a /dev/cdroms directory in the installation ramdisk
    mkdir /cdrom /dev/cdroms
  19. Go to the /dev/cdroms directory and build a symlink from /dev/sda1 (that is likely the device name of your USB boot partition) to /dev/cdroms/cdrom0.
    cd /dev/cdroms
    ln -s ../sda1/cdrom0
  20. While still in the shell, mount the USB drive to mimic an installation CD-ROM.
    mount -t vfat /dev/cdroms/cdrom0 /cdrom
  21. Return to the installation program with Alt-F1 and continue the installation.

From this point, the process should be identical to a routine CD-ROM installation.

For a grand total of $140 and 8 watts of power consumption, I now have a near-silent Linux server running 24/7. You can telnet to it here and marvel at its blinding speed running a 250,000-sector Space Tyrant game.

mail this link | permapage | score:9285 | -Ray, August 16, 2007 (Updated: April 26, 2011)

iRedMail: Quickly configure a Mail Server with LDAP, Postfix, RoundCube / SquirrelMail on Ubuntu 8.04

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iRedMail is a shell script that lets you quickly deploy a full-featured mail solution in less than 2 minutes. Since version 0.5, iRedMail supports Ubuntu 8.04, 9.04 (it supports both i386 and x86_64). Its object is to make a Linux mail server installation and configuration simple and easy to use. iRedMail supports both OpenLDAP and MySQL as backends for storing virtual domains and users. This tutorial shows how to use the OpenLDAP backend. read more...
permapage | score:9274 | -falko, December 3, 2009

VirtualBox 4.2.10 released and ubuntu installation instructions included

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VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL) version 2. read more...
permapage | score:9263 | -gg234, April 4, 2013

Add WiKID Two-Factor Authentication to OpenVPN Community On Ubuntu 13.04

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These instructions describe setting up two-factor authentication with WiKID Strong Authentication, which is a commercial/open source two-factor authentication system and OpenVPN, an SSL-encrypted VPN, on an Ubuntu 13.04 Linux server using the Radius Pluggable Authentication Module. First, we will configure PAM to use Radius, then we will configure OpenVPN to use PAM and one-time passwords, then we will create a network client on the WiKID server for OpenVPN. We won't go into specifics about installing these services, rather we will focus on configuring them to all work together. read more...
mail this link | permapage | score:9234 | -falko, June 29, 2013

How to get gorgeous looking fonts on ubuntu linux

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This is quick guide on optimizing the font rendering on your ubuntu system by tweaking the antialiasing settings and installing better fonts. read more...
permapage | score:9212 | -Silver Moon, August 8, 2013

How to install mariadb on ubuntu 13.04

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MariaDB is a drop-in replacement for MySQL.MariaDB strives to be the logical choice for database professionals looking for a robust, scalable, and reliable SQL server. To accomplish this, Monty Program works to hire the best and brightest developers in the industry, work closely and cooperatively with the larger community of users and developers in the true spirit of Free and open source software, and release software in a manner that balances predictability with reliability. read more...
permapage | score:9209 | -gg234, August 21, 2013

Set up Oneiric PVHVM at Xen 4.1.2 Ubuntu 11.10 Dom0

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This post is sample of utilizing optimized paravirtualized PVHVM drivers (also called PV-on-HVM drivers) with Xen fully virtualized HVM guests running Ubuntu 3.1 kernels at Xen 4.1.2 Dom0. Xen PVHVM drivers completely bypass the Qemu emulation and provide much faster disk- and network IO performance. First thing I had to do it was rebuild the recent Ubuntu kernel for precise Ubuntu-3.1.0-3 with CONFIG_XEN_PLATFORM_PCI=y. As result following debian packages gets created. read more...
permapage | score:9193 | -Boris Derzhavets, November 3, 2011

Tutorial: Ubuntu Jeos 12.04 LTS Spam Filter Gateway Server

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This tutorial shows how to set up an Ubuntu Jeos based server as a spamfilter in gateway mode. In the end, you will have a SpamSnake Gateway which will relay clean emails to your MTA. You will also be able to view your incoming queue, train your SpamSnake and carry out a few more advanced operations via Baruwa. read more...
permapage | score:9183 | -falko, December 23, 2012

Dual-boot Ubuntu 12.04 and Windows 7 on a computer with 2 hard drives

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This is the second article on dual-booting Ubuntu Desktop 12.04 with Windows 7. But while the first one, how to dual-boot Ubuntu 12.04 and Windows 7, showed how to do it on a computer with a single hard drive, this one gives a step-by-step guide on how to do it on a computer with two hard drives. read more...
permapage | score:9178 | -finid, July 25, 2012

Download: Ubuntu Linux Live CD ISO

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Here's a downloadable .iso image of Ubuntu's new Live Linux CD. There is a direct download link as well as a bittorrent link available.
This CD will allow you to try out Ubuntu before installing it, without repartitioning or overwriting any existing software or data. Just place it in the drive and reboot your computer.
[Alternatively, you can download the latest release directly from Ubuntu. -Ed.] read more...
permapage | score:9170 | -Ray, October 11, 2004 (Updated: March 19, 2007)

How to install HotShots on Fedora 19 and Ubuntu 13.04

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There is Shutter and Deepin Scrot, both of which come with image editing features. In that aspect, they are better than the previous two. Deepin Scrot is from the developers of Linux Deepin, a distribution based on Ubuntu Desktop.

And here comes HotShots. What does it look like and what can you do with it, other than take screen shots?

Let me show you. read more...
permapage | score:9162 | -finid, July 27, 2013

ATA over Ethernet (AoE) (Ubuntu 12.04)

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This guide explains how you can set up an AoE target and an AoE initiator (client), both running Ubuntu 12.04. AoE stands for "ATA over Ethernet" and is a storage area network (SAN) protocol which allows AoE initiators to use storage devices on the (remote) AoE target using normal ethernet cabling. "Remote" in this case means "inside the same LAN" because AoE is not routable outside a LAN (this is a major difference compared to iSCSI). To the AoE initiator, the remote storage looks like a normal, locally-attached hard drive. read more...
mail this link | permapage | score:9162 | -falko, October 19, 2012

Upgrade Ubuntu 12.04 to 12.10

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The new Ubuntu 12.10 (Quantal Quetzal) has just been released. This guide shows how you can upgrade your Ubuntu 12.04 LTS desktop and server installations to Ubuntu 12.10. read more...
permapage | score:9154 | -falko, October 20, 2012

Comparison Review: Ubuntu 9.10 Live CD vs. Mandriva One 2010

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Ubuntu and Mandriva are two of the most popular desktop Linux brands. Both are backed by commercial entities. Ubuntu by Canonical Ltd., and Mandriva by Mandriva. Both are free to download and use, and have a vibrant, online user community. Ubuntu is a GNOME-based distro, while Mandriva One has separate iso images for GNOME and KDE desktop environments. In order not to compare apples to oranges, this review features Ubuntu 9.10 Live CD and the GNOME edition of Mandriva One 2010.

(and here are, right on cue, some orange prints) read more...
mail this link | permapage | score:9152 | -finid, November 14, 2009 (Updated: April 24, 2012)

Set up Qemu-Spice-Libvirt 0.9.6 USB Redirection on Ubuntu 11.10

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I’ve just built locally and uploaded to Launchpad Libvirt 0.9.6 via Debian Unstable, applying standard set of Ubuntu’s patches updated for 0.9.6. It allows follow http://planet.spice-space.org/ update VM’s XML profile under /etc/libvirt/qemu/ as suggested in second blog entry of Hans de Goede manage VMs via virsh or Virt Manager having USB redirection support active in Spicy’s sessions. View for further details view my previous posting to Librenix. read more...
permapage | score:9146 | -Boris Derzhavets, October 17, 2011

Pre-release Ubuntu 12.10 has partial support for manual LVM and disk encryption

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Today, I took another look at a daily build of Ubuntu 12.10 to see how far the coders have come in implementing manual LVM and disk encryption. Here is what I found: read more...
permapage | score:9125 | -finid, September 27, 2012

Beginner Ubuntu Tips

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Twenty-five tips for Ubuntu beginners...
Adding another source for software is easy; once you've installed addrepo, you can do it in the terminal by typing something along the lines of addrepo deb http://mirror2.ubuntulinux.nl/ lucid-seveas all.

If you find new repositories online, they will usually give you the right details to enter. You could also do it graphically by going to 'System | Administration | Software Sources | Third Party Software | Add'. read more...
permapage | score:9101 | -Ray, November 9, 2010

Linux Mint 10 vs. Ubuntu 10.10

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Discover why I prefer Linux-Mint Julia over Ubuntu Maverick...
Yet, default [Ubuntu] functionalities are not enough to turn a Windows-7-addicted into the Ubuntu lover I want him to become. In fact, Ubuntu new-comers get shocked by the new interface gnome offers, and frustrated when they find no flash support for their browsing. Hence, in order to fill that gap, I find myself downloading, installing and configuring new features, like compiz for visual effects, closed-source codecs for medias, system upgrades for more stability, a more friendly theme, etc...
read more...
mail this link | permapage | score:9067 | -aimar, December 23, 2010
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