Language Selection

English French German Italian Portuguese Spanish

Today's Howtos:

Filed under
HowTos

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

Qt/KDE: Qt5 in Debian and Slackware, QtCreator on Android, KDE Discover, and Plasma's 10th Anniversary

  • moving Qt 4 from Debian testing (aka Buster): some statistics, update II
    We started filing bugs around September 9. That means roughly 32 weeks which gives us around 5.65 packages fixed per week, aka 0.85 packages per day. Obviously not as good as we started (remaining bugs tend to be more complicated), but still quite good.
  • [Slackware] Plasma5 – April 18 edition for Slackware
    The KDE-5_18.04 release of ‘ktown‘ for Slackware-current offers the latest KDE Frameworks (5.45.0), Plasma (5.12.4) and Applications (18.04.0). The Qt5 was upgraded to 5.9.5. Read the README file for more details and for installation/upgrade instructions. Enjoy the latest Plasma 5 desktop environment.
  • Perfect Debugging Experience with QtCreator on Android
    While I was working on a yet-to-be-announced super secret and cool Qt on Android project, I had to do a lot of debugging. This way I found that debugging Qt apps on Android using QtCreator was ok, but it had some issues, which was kinda frustrating.
  • Discover – Easily Install Software on KDE Neon Desktop
    KDE Discover is an Open Source GUI app installer that comes packaged with KDE Neon. It was particularly built from the ground up to be compatible with other modern Linux distros with emphasis on beauty and convenience. KDE Discover was also designed to allow for an intuitive User Experience as it features a clean and clear layout with a high readability value which makes it easy to browse, search for, install, and uninstall applications.
  • Almost 10 years of Plasma-Desktop
    Last week I was at work and start to listen my boss said: “We need to show this to our director”. So I went to my coworker table to see what was happening. So they were using Gource to make a video about the git history of the project. Gource is a software version control visualization tool. So that triggered in my mind some memories about a friend talking about Python and showing how the project as grow in this past years, but I never discovered about the tool that made that amazing video. So well, I started to make some Gource videos, and because my love about KDE Community, why not make one about it?

GNOME: Getting Real GNOME Back in Ubuntu 18.04, Bug Fix for Memory Leak

  • Getting Real GNOME Back in Ubuntu 18.04 [Quick Tip]
    Ubuntu 18.04 uses a customized version of GNOME and GNOME users might not like those changes. This tutorial shows you how to install vanilla GNOME on Ubuntu 18.04. One of the main new features of Ubuntu 18.04 is the customized GNOME desktop. Ubuntu has done some tweaking on GNOME desktop to make it look similar to its Unity desktop. So you get minimize options in the windows control, a Unity like launcher on the left of the screen, app indicator support among some other changes.
  • The Infamous GNOME Shell Memory Leak
    at this point, I think it’s safe to assume that many of you already heard of a memory leak that was plaguing GNOME Shell. Well, as of yesterday, the two GitLab’s MRs that help fixing that issue were merged, and will be available in the next GNOME version. The fixes are being considered for backporting to GNOME 3.28 – after making sure they work as expected and don’t break your computer.
  • The Big GNOME Shell Memory Leak Has Been Plugged, Might Be Backported To 3.28
    The widely talked about "GNOME Shell memory leak" causing excessive memory usage after a while with recent versions of GNOME has now been fully corrected. The changes are currently staged in Git for what will become GNOME 3.30 but might also be backported to 3.28. Well known GNOME developer Georges Stavracas has provided an update on the matter and confirmed that the issue stems from GJS - the GNOME JavaScript component - with the garbage collection process not being fired off as it should.

Graphics: AMDVLK, XWayland and Vulkan

  • AMDVLK Vulkan Driver Stack Gets Updated With More Extensions, Optimizations & Fixes
    AMD developers maintaining their official Vulkan cross-platform driver code have pushed their end-of-week updates to their external source repositories for those wanting to build the AMDVLK driver on Linux from source. This latest AMDVLK push updates not only their PAL (Platform Abstraction Layer) and XGL (Vulkan API Layer) components but it also updates their fork of the LLVM code-base used for their shader compilation.
  • EGLStreams XWayland Code Revised Ahead Of X.Org Server 1.20
    It's still not clear if the EGLStreams XWayland support will be merged for xorg-server 1.20 but at least the patches were revised this week, making it possible to merge them into this next X.Org Server release for allowing the NVIDIA proprietary driver to work with XWayland.
  • Vulkan 1.1.74 Released With Minor Fixes & Clarifications
    Vulkan continues sticking to the "release early, release often" mantra with the availability today of Vulkan 1.1.74.

Xfce Releases/Updates

  • Xfce Settings 4.12.3 / 4.13.2 Released
    Fixes galore! Xfce Settings 4.12.3 and 4.13.2 were released on March 18th with several improvements, feature parity, and translations.
  • Xfce PulseAudio Plugin 0.4.0 (and 0.4.1) Released
    Stable as a rock. Xfce PulseAudio Plugin hit a new stable milestone with the 0.4.0 release. This release wraps up the awesome development cycle we’ve had on this over the last few months and is recommended for all users.
  • Xfce Settings Update Brings Better Multi-Monitor Support
    While still waiting on the long-awaited Xfce 4.14, out this weekend is an Xfce Settings 4.14.2 preview release as well as an Xfce Settings 4.12.3 stable series update. Both of these Xfce Settings updates bring better multi-monitor support, including visualization of all display configuration states, visually noting if two displays are mirrored, always drawing the active display last so it's on top, and a number of fixes pertaining to the multi-monitor display handling from this Xfce desktop settings agent.