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Today's Howtos:

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Network security is an ever growing need these days. You never know what you’re going to find when you step out into the wild world of the internet. Luckily we’re all using Ubuntu so we’re much more protected than most of the world, but there still is reason to protect our computers and networks.

For those of you that are not behind a hardware router (if you don’t know this might be you) you definitely want to install a firewall for your system.

Setup a Desktop Firewall with Firestarter : Ubuntu (5.10 / 6.06.1 / 6.10)

And: Using Firestarter


Skype is a little piece of software that lets you make free calls to anyone else on Skype, anywhere in the world. And even though the calls are free, they are really excellent quality. If you and your friends, family or business contacts are using webcams, you can also make free video calls. You can even call landlines and mobile phones at really cheap per minute rates (and there’s no setup or subscription fee).

Install skype in ubuntu

First you need to download the latest .deb package from here using the following command:

Install Skype Instant messenger


As part of my work on Xen I've been playing with Xephyr (a replacement for Xnest). My plan is to use Xen instances for running different versions of desktop environments. You can't just ssh -X to a Xen image and run things. One problem is that some programs such as Firefox do strange things to try and ensure that you only have one instance running. Another problem is with security, the X11 security extensions don't seem to do much good. A quick test indicates that a ssh -X session can't copy the window contents of a ssh -Y session, but can copy the contents of all windows run in the KDE environment. So this extension to X (and the matching ssh support) seem to do little good.

One thing I want to do is to have a Xen image for running Firefox with risky extenstions such as Flash and keep it separate from my main desktop for security and managability.

Xephyr


This article is to guide you thru the installation and system preparation for FreeBSD 6.1. This article is not intended to produce a working system, but is the foundation for the progression to either a desktop system or a server. Once this document has been followed to completion, you may either choose to follow the Server or Workstation documents for your system deployment.

installing_freebsd_6_1


When you install a dual-boot of Ubuntu, one of the frustrating things that you’ll immediately notice is that Ubuntu is now set as the default operating system in the Grub loader. There’s an easy way to switch back to using Windows as the default.

To make this change, you’ll first have to boot into Ubuntu, and then run the following command:


Set Windows as Default OS when Dual Booting Ubuntu


This article is about resizing ext3 partitions without losing data. It shows how to shrink and enlarge existing ext3 partitions and how to merge two ext3 partitions. This can be quite useful if you do not use LVM and you realize that your existing partitioning does not meet your actual needs anymore.

How To Resize ext3 Partitions Without Losing Data


I have mp3 music file all over my file system. I’d like to move them onto specific directory called /mnt/mp3. So how do you find and move all mp3 files to /mnt/mp3 directory?

Simply use find command. It locates all files and then executes a command to move them to /mnt/mp3 (any other directory).

Finding all .mp3 files and move to new directory from shell prompt


A quick note for anyone wondering how to enable core dumps from within most Linux distributions.

1. First, make sure debug symbol are enabled in your project’s configuration (in configure.ac if you’re using autoconf).

HOWTO enable coredumps


Staying in front of your computer for hours and hours with the default fonts can be a challenge on Linux/Unix. I, for one, can't work properly without the Windows fonts comfort Smile

Having the windows fonts working on Unix systems is fairly easy, but on Red Hat-based operating systems such as CentOS or Fedora, can be a real nightmare. The most critical aspect of having the Microsoft fonts to display properly on CentOS in compiling freetype with bytecode interpreter enabled. Let's go through this procedure.

How to display Microsoft fonts like in Windows in CentOS?


More in Tux Machines

Quadcopter drone packs first all-Linux APM autopilot

Erle Robotics launched a ROS-enabled, open source “Erle-brain” autopilot that runs APM directly on Linux. The device also powers an “Erle-copter” drone. Over the last year, Spanish firm Erle Robotics S.L. has been working with 3DRobotics to develop an open source BeaglePilot autopilot for drones that can run Linux on 3DR’s popular, Arduino-based APM (ArduPilot Mega) platform. The APM Linux port was developed by both companies, as well as several academic institutions. The BeagleBone-based “Erle-brain” autopilot is built into the $490-and-up Erle-copter quadcopter. Read more

Seven Tips To Get The Most From Your New Android Smartphone

With applications able to run in the background and sync as they see fit, Android can rapidly eat through your cellular data allowance if you are not careful. While it’s fine to let the data run free on wi-fi, you’ll want to restrict your data usage when out and about. Short of switching off mobile data (which defeats the purpose of a smartphone), look under the options in the Data Usage part of the settings. Here you’ll find my wallet’s favourite Android setting of ‘restrict background data’. Now when using cellular data, apps will only pull down data when they are in the foreground and you can see them doing so. If a smartphone is all about being in control, this is the option that gives you confidence. Read more

today's leftovers

Hands-on with PCLinuxOS: A terrific release

I had been thinking that a new PCLinuxOS release was due any time now, based on their quarterly release schedule. Sure enough, it has now arrived, just in time for Christmas - PCLinuxOS 2014.12. Read more Also: Santa Claus has Linux in his sack -- PCLinuxOS 2014.12 is here PCLinuxOS 2014.12 released