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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

Android Leftovers

  • Pimp your smartphone with the latest Android O Pixel launcher
    If your device is running Android 6.0.1 Marshmallow or above, you can now pimp it out with the latest Google O Pixel launcher. One of the contributors on the XDA Developers forum has recently posted the APK file, which you can install on your smartphone. Before you download the file, make sure your device can install apps that aren’t listed on the Play Store. To do so, open up the Settings menu, tap on Security, and enable the “Unknown sources” option. Once that’s done, all you have to do is download the file and then tap on it in the notification shade to install the launcher on your device.
  • Google is killing off Android's emoji blobs
    The best emojis on the market are no more: Google’s weird blobs are being retired in favour of more conventional circular yellow faces.
  • Google I/O: What about Android on Chrome OS?
    The hottest tech-show ticket these days is Google I/O. In the just-finished 2017 conference, Google announced lots of great stuff, including a lightweight version of Android, Android Go; a first look at the next version of Android, Android O; and a major upgrade to Google Home. One thing that was noticeably missing, however: big news about Android apps on Chrome OS.
  • RaspAnd Marshmallow 6.0.1 Android OS Now Available for Raspberry Pi 3 and 2 SBCs
    After informing us about the availability of a new build of his RaspAnd Nougat operating system for Raspberry Pi 3 and 2 SBCs based on Android 7.1.2, Arne Exton released an updated RaspAnd Marshmallow 6 version.

today's howtos

LinuxAndUbuntu Distro Review Of The Week - Deepin OS

​Depth/Deepin OS is not just another Linux Distro, but one with something new to show. Deepin OS is simply speaking, just beautiful. Deepin OS, formerly known as Deepin, Linux Deepin, and Hiweed GNU/Linux is a Linux distro with an identity crisis. Seriously, this distro has undergone name changes you always have to check twice if the name is still the same. And that is all the negative you are going to say about this distro. Honestly speaking, Deepin OS is surely going to blow you away. I have been keeping an eye on this distro since 2013 and it still manages to impress me. Read more

KDE Leftovers: digikam, KDevelop, Kate, GSoC, and Akademy

  • [digikam] Call to Test the Pre-Release of 5.6.0
    Once again a lot has been going on behind the scenes since the last release. The HTML gallery tool is back, database shrinking (e.g. purging stale thumbnails) is also supported on MySQL, grouping has been improved and additional sidecars can now be specified. Therefore the release of 5.6.0 will be (is already) delayed, as we would like to invite you to test all these features. As usual they are available in the pre-release bundles or obviously directly from the git repository. Please report any dysfunctions, unexpected behaviour or suggestions for improvement to our bug tracker.
  • KDevelop runtimes: Docker and Flatpak integration
    On my last blog post I discussed about how some assumptions such as the platform developed on can affect our development. We need to minimize it by empowering the developers with good tools so that they can develop properly. To that end, I introduced runtimes in our IDE to abstract platforms (much like on Gnome’s Builder or Qt Creator).
  • Kate 17.04.1 available for Windows
  • GSoC - Community Bonding Period with Krita
  • First month report: my feelings about gsoc
  • My Akademy Plans
    The Akademy programme (saturday, sunday) is actually pretty long; the conference days stretch into feels-like-evening to me. Of course, the Dutch are infamous for being “6pm at the dinner table, and eat potatoes” so my notion of evening may not match what works on the Mediterranean coast. Actually, I know it doesn’t since way back when at a Ubuntu Developer Summit in Sevilla it took some internal-clock-resetting to adjust to dinner closer to midnight than 18:00.