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Monday, May 11, 2015

Top 10 blog posts for Aprile 2015 from Linuxlandit & The Conqueror Penguin.

1.- GCompris: Introduction, Minimal Configuration & Installation.

GCompris: Introduction, Minimal Configuration & Installation.

Introduction GCompris is a completely free educational software suite which contains a wide range of activities. It offers various activities aimed at covering a variety of fields such as the functioning of the computer, using the mouse and keyboard, general learning, reading, writing, foreign languages, algebra, as well as various activities such as memory and logic games, scientific

Read More ... »

2.- RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter II).

RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter II).

The default illuminant is D50; D55, or 5500°K, is not provided as an option.  The spectral data in Argyll’s own custom spectrum file, D50_1.0.sp, can be found in Measuring Colour, Fourth Edition [PDF] by R.W.G. Hunt and M.R. Pointer, conveniently accompanied by the values for D55.  I used the latter to create D55_1.0.sp.  (Note, page 358 contains a typo; the middle columns for wavelengths 785+

Read More ... »

Wednesday, April 29, 2015

Interview: Lennart Poettering (systemd).

Lennart Poettering (born October 15, 1980) is a German computer free software programmer known for his work on PulseAudio, a sound server, systemd, a replacement for the System V init daemon, and Avahi, an implementation of the zeroconf protocol for network device discovery.

Could you briefly introduce yourself?

I am Lennart Poettering, I work for Red Hat, as part of the desktop group. I wrote most of Avahi and PulseAudio, among other stuff. Right now I am focusing on systemd which I created together with Kay Sievers from SUSE. Systemd is a new system and service manager for Linux which is currently being adopted as init system by most major distributions.

What will your talk be about, exactly?

Well, systemd! The exact contents of my talk depends on what the audience wants to hear. ;-)

Lennart_Poettering

Tuesday, April 28, 2015

Systemd is a system and service manager for Linux, compatible with SysV and LSB init scripts.

Systemd is a system and service manager for Linux, compatible with SysV and LSB init scripts. systemd provides aggressive parallelization capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, keeps track of processes using Linux cgroups, supports snapshotting and restoring of the system state, maintains mount and automount points and implements an elaborate transactional dependency-based service control logic. It can work as a drop-in replacement for sysvinit. For more information, watch the video at http://www.youtube.com/watch?v=TyMLi8QF6sw

For system administrators.
System administrators can visit this page, to understand how to use the native systemctl calls that replace their old workflow in SysVinit. Note that the service and chkconfig commands will continue to work as expected in the systemd world.

Tools.

systemd-1

Saturday, April 11, 2015

Top 10 blog posts for March 2015 from Linuxlandit & The Conqueror Penguin.

1.- GCompris: Introduction, Minimal Configuration & Installation.

GCompris: Introduction, Minimal Configuration & Installation.

Introduction GCompris is a completely free educational software suite which contains a wide range of activities. It offers various activities aimed at covering a variety of fields such as the functioning of the computer, using the mouse and keyboard, general learning, reading, writing, foreign languages, algebra, as well as various activities such as memory and logic games, scientific

Read More ... »

2.- RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter II).

RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter II).

The default illuminant is D50; D55, or 5500°K, is not provided as an option.  The spectral data in Argyll’s own custom spectrum file, D50_1.0.sp, can be found in Measuring Colour, Fourth Edition [PDF] by R.W.G. Hunt and M.R. Pointer, conveniently accompanied by the values for D55.  I used the latter to create D55_1.0.sp.  (Note, page 358 contains a typo; the middle columns for wavelengths 785+

Read More ... »

Monday, March 16, 2015

Using Fedora for common desktop computing tasks (Chapter I).

The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA").

An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/. The original authors of this document, and Red Hat, designate the Fedora Project as the "Attribution Party" for purposes of CC-BY-SA. In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version.

Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law.

Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries.

For guidelines on the permitted uses of the Fedora trademarks, refer to https://fedoraproject.org/wiki/Legal:Trademark_guidelines.

Linux® is the registered trademark of Linus Torvalds in the United States and other countries.

fedora-desktop

Sunday, March 8, 2015

Top 10 blog posts for February 2015 from Linuxlandit & The Conqueror Penguin.

1.- GCompris: Introduction, Minimal Configuration & Installation.

GCompris: Introduction, Minimal Configuration & Installation.

Introduction GCompris is a completely free educational software suite which contains a wide range of activities. It offers various activities aimed at covering a variety of fields such as the functioning of the computer, using the mouse and keyboard, general learning, reading, writing, foreign languages, algebra, as well as various activities such as memory and logic games, scientific

Read More ... »

Friday, February 27, 2015

GCompris: Introduction, Minimal Configuration & Installation.

Introduction

GCompris is a completely free educational software suite which contains a wide range of activities. It offers various activities aimed at covering a variety of fields such as the functioning of the computer, using the mouse and keyboard, general learning, reading, writing, foreign languages, algebra, as well as various activities such as memory and logic games, scientific experiments etc.

In GCompris you will find many individual software packages which together make up the complete GCompris suite of activities. Unfortunately, it is difficult to follow and maintain them as each one offers different graphic interfaces which vary widely in quality.

The purpose of GCompris is to provide a development platform for educational activities.

GCompris is part of GNU project and is placed under the GPL license.

gcompris electric

Friday, February 20, 2015

RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter II).

The default illuminant is D50; D55, or 5500°K, is not provided as an option.  The spectral data in Argyll’s own custom spectrum file, D50_1.0.sp, can be found in Measuring Colour, Fourth Edition [PDF] by R.W.G. Hunt and M.R. Pointer, conveniently accompanied by the values for D55. 

I used the latter to create D55_1.0.sp.  (Note, page 358 contains a typo; the middle columns for wavelengths 785+ are misaligned, and should be under D50, D55, D65, and D75.)

One more step remains before using the profile for high-quality work:  determining output levels as described on the BTDZS workflow page.

For printing real images, the only differences are that the image will have an embedded working space profile, and we set the printer profile in the color management dialog.  (I also set the soft-proofing display mode.)  Everything else stays the same.

PhotoPrint settings for actual printing:

rawtherapee -photoprint 0.4.2-pre2

RawTherapee cross-platform raw image processing program: a color-managed Linux workflow (Chapter I).

Partly out of curiosity, and partly to help widen the horizon of digital photography, I have worked through a color management workflow entirely in Linux, from raw photo to monitor to print.  It is actually a continuation of my page on zone system calibration in linux.  I must admit that the results were more a “proof of concept” than an ideal workflow, partly because of available alternatives, and partly because of limitations on my own ability to print in Linux.

Operating system:  Korora 20, 64-bit.  Korora is a Fedora remix that includes third-party and proprietary software that makes it easier to use out-of-the-box than Fedora, while retaining the “bleeding edge,” “state-of-the-art” qualities of the latter.  The applications below were all installed from the repositories, except for TurboPrint which was an .rpm download.

Color management application:  Argyll Color Management System 1.6.3, by Graeme Gill.  For Linux, there is no real alternative.  I mainly followed the tutorials on the Typical usage Scenarios and Examples page, together with the documentation for each individual program.

Raw converter/image editor:  RawTherapee 4.2.74.

rawtherapee_2-4-1

Sunday, February 15, 2015

RawTherapee is a cross-platform raw image processing program

RawTherapee is a cross-platform raw image processing program, released under the GNU General Public License Version 3.

It was originally written by Gábor Horváth of Budapest, Hungary, before being re-licensed as free and open-source software in January 2010.

It is written in C++, using a GTK+ front-end and a patched version of dcraw for reading raw files. It is notable for the advanced control it gives the user over the demosaicing and developing process.

The name used to stand for "The Experimental Raw Photo Editor"; however that acronym has been dropped, and RawTherapee is now a full name in itself.

RawTherapee comprises a subset of image editing operations specifically aimed at non-destructive raw photo post-production and is primarily focused on improving a photographer's workflow by facilitating the handling of large numbers of images.

raw_therapee

Aseprite is an open source program to create animated sprites & pixel: user interface.

Animations and visual effects are nowadays used to enhance nearly every form of multimedia, including video games. These are created by combining multiple images and effects, with an abundance of applications at your disposal.

Aseprite is one of them and offers a different approach on image editing and creating short animations.

Intuitive design makes it easy to use.

If you're nostalgic about the past era of pixel graphics and effects, you might just find this to be a suitable environment.

This is not only because of the application's aim to create such sprites, but the interface is fully designed this way as well. Although you get the impression of an old video game, with icons and tools being a little difficult to identify, accommodation is no problem at all.

Clever file support and drawing tools.

The result is either an enhanced picture or short animation to use in your project, but until you get there some effort needs to be invested.

aseprite logo

Saturday, February 7, 2015

Top 10 blog posts for January 2015 from Linuxlandit & The Conqueror Penguin.

1.- Mixxx User Manual: Hardware Setup.

Mixxx User Manual: Hardware Setup.

This chapter describes the most common hardware setups to serve as examples. We will go over the setup of timecode records/CDs, MIDI control and keyboard control. Audio Output. Headphone cueing, or just cueing, is previewing the next track you would like to mix in your headphones. The audience will not hear what you are cueing in your headphones. Being able to cue is a crucial aspect of DJing.

Read More ... »

Tuesday, January 27, 2015

12 Lesser-Known Google Projects That Are Absolutely Amazing.

Explore some of the lesser-known creative projects from Google that are also excellent educational tools.

Google revolutionized the Internet by making the global brain easily searchable by anyone. In addition to search, Google has created all kinds of different tools like Google Maps, Gmail, Analytics, Android and Apps that many of us use everyday.

One of the reasons why Google has consistently released new innovative project is because of their 20% time policy, which gives many of their employees one day a week to experiment with new concepts and ideas. This has resulted in many lesser-known creative projects that have emerged from within Googleplex.

In this post, I want to show you some of most fascinating websites that Google employees have created and how you can use them as educational tools.

Google Creative Projects

Friday, January 9, 2015

Top 10 blog posts for December 2014 from Linuxlandit & The Conqueror Penguin.

1.- Mixxx User Manual: Hardware Setup.

Mixxx User Manual: Hardware Setup.

This chapter describes the most common hardware setups to serve as examples. We will go over the setup of timecode records/CDs, MIDI control and keyboard control. Audio Output. Headphone cueing, or just cueing, is previewing the next track you would like to mix in your headphones. The audience will not hear what you are cueing in your headphones. Being able to cue is a crucial aspect of DJing.

Read More ... »

Saturday, October 11, 2014

Top 10 blog posts for September 2014 from Linuxlandit & The Conqueror Penguin.

1.- Mixxx User Manual: Hardware Setup.

Mixxx User Manual: Hardware Setup.

This chapter describes the most common hardware setups to serve as examples. We will go over the setup of timecode records/CDs, MIDI control and keyboard control. Audio Output. Headphone cueing, or just cueing, is previewing the next track you would like to mix in your headphones. The audience will not hear what you are cueing in your headphones. Being able to cue is a crucial aspect of DJing.

Read More ... »

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