The Showfoto Handbook the Showfoto Handbook

Total Page:16

File Type:pdf, Size:1020Kb

The Showfoto Handbook the Showfoto Handbook The Showfoto Handbook The Showfoto Handbook 2 Contents 1 Introduction 13 1.1 Background . 13 1.1.1 About Showfoto . 13 1.1.2 Reporting Bugs . 13 1.1.3 Support . 13 1.1.4 Getting Involved . 13 1.2 Supported Image Formats . 14 1.2.1 Introduction . 14 1.2.2 Still Image Compression . 14 1.2.3 JPEG . 14 1.2.4 TIFF . 15 1.2.5 PNG . 15 1.2.6 PGF . 15 1.2.7 RAW . 15 2 The Showfoto sidebar 17 2.1 The Showfoto Right Sidebar . 17 2.1.1 Introduction to the Right Sidebar . 17 2.1.2 Properties . 17 2.1.3 Metadata . 18 2.1.3.1 EXIF Tags . 19 2.1.3.1.1 What is EXIF . 19 2.1.3.1.2 How to Use EXIF Viewer . 19 2.1.3.2 Makernote Tags . 20 2.1.3.2.1 What is Makernote . 20 2.1.3.2.2 How to Use Makernote Viewer . 20 2.1.3.3 IPTC Tags . 20 2.1.3.3.1 What is IPTC . 20 2.1.3.3.2 How to Use IPTC Viewer . 21 2.1.3.4 XMP Tags . 21 2.1.3.4.1 What is XMP . 21 2.1.3.4.2 How to Use XMP Viewer . 21 2.1.4 Colors . 21 The Showfoto Handbook 2.1.4.1 Histogram Viewer . 21 2.1.4.2 How To Use an Histogram . 23 2.1.5 Maps . 25 2.1.6 Captions . 26 2.1.6.1 Introduction . 26 2.1.6.2 Comment View . 27 2.1.6.3 Date & Time . 27 2.1.6.4 Rating . 28 2.1.6.5 Tag Tree . 28 2.1.6.6 Information View . 28 2.1.7 Versions view . 28 2.1.8 Filters . 30 2.1.9 Tools view . 31 2.1.9.1 Sidebar Tools of the Image Editor . 31 3 Using Showfoto 32 3.1 Photographic Editing - Workflow . 32 3.1.1 Image Editing/Workflow Tools . 32 3.1.1.1 A Standard Workflow Proposal . 32 3.1.1.2 Introduction to common editing tools features . 33 3.1.1.3 The Showfoto tool set . 34 3.1.2 Processing RAW image files, RAW work-flow . 35 3.1.3 Color editing tools . 35 3.1.3.1 Encoding Depth . 35 3.1.3.2 Color Management . 35 3.1.3.3 Introduction . 35 3.1.3.4 Black and White Conversion Filters . 38 3.1.3.4.1 The Legacy Black and White Films Emulation . 38 3.1.3.4.2 Simulate Infrared Film . 42 3.1.3.5 Correcting Colors . 43 3.1.3.6 Introduction . 45 3.1.3.6.1 Using Adjust Curves . 46 3.1.3.6.2 The Adjust Curves in action . 47 3.1.3.7 Introduction . 48 3.1.3.7.1 Using the Adjust Levels tool . 49 3.1.3.7.2 The Adjust Levels tool in action . 50 3.1.3.8 Correcting Exposure . 51 3.1.3.9 Introduction . 52 3.1.3.9.1 Using the Channel Mixer . 52 3.1.3.9.2 The channel mixer in action . 53 3.1.3.10 Introduction . 53 3.1.3.10.1 Using the Whitebalance Tool . 54 4 The Showfoto Handbook 3.1.3.11 Color Negative Tool . 56 3.1.4 Image Enhancement . 56 3.1.4.1 Introduction . 56 3.1.4.1.1 Using the lens distortion tool . 56 3.1.4.1.2 The lens distortion tool in action . 58 3.1.4.2 Introduction . 58 3.1.4.2.1 Create the Black Frames . 59 3.1.4.2.2 Using the hotpixel tool . 59 3.1.4.2.3 The hotpixels tool in action . 60 3.1.4.3 Improve Photos exposure with Local Contrast Tool . 60 3.1.4.4 Introduction . 61 3.1.4.4.1 Using the Noisereduction Tool . 62 3.1.4.4.2 Noisereduction in action . 63 3.1.4.5 Softening a Photograph . 64 3.1.4.6 Introduction . 65 3.1.4.6.1 Using the Restoration tool . 65 3.1.4.6.2 The Restoration tool in action . 67 3.1.4.7 Introduction . 68 3.1.4.7.1 Using the vignetting correction tool . 69 3.1.4.7.2 The vignetting correction tool in action . 70 3.1.4.8 Introduction . 71 3.1.4.8.1 Using the Inpainting tool . 72 3.1.4.8.2 The Inpainting tool in action . 73 3.1.4.9 Remove Red Eyes in a Photograph . 74 3.1.4.10 Introduction . 75 3.1.4.10.1 Adjusting Sharpness . 75 3.1.4.10.2 Unblurring a Photograph . 75 3.1.4.10.3 Reducing Graininess In a Photograph . 76 3.1.4.10.4 Softening a Photograph . 76 3.1.4.10.5 The Unsharp Masking Filter . 76 3.1.4.10.6 The Unsharp Mask in action . 77 3.1.4.10.7 Refocus a Photograph . 78 3.1.4.10.8 Using the Refocus Tool . 79 3.1.4.10.9 Refocus comparison with other techniques . 80 3.1.4.11 Lens Auto Correction Tool . 82 3.1.5 Image transformation tools . 82 3.1.5.1 Cropping a Photograph . 82 3.1.5.1.1 Manual Crop . 82 3.1.5.1.2 Auto Crop . 83 3.1.5.1.3 Proportional Crop . 83 5 The Showfoto Handbook 3.1.5.1.4 Composition Guide . 85 3.1.5.2 Introduction . 89 3.1.5.2.1 Free Rotation Tool . 89 3.1.5.2.2 Free Rotation action . 90 3.1.5.3 Introduction . 90 3.1.5.3.1 Using the Perspective Adjustment . ..
Recommended publications
  • Darktable 1.2 Darktable 1.2 Copyright © 2010-2012 P.H
    darktable 1.2 darktable 1.2 Copyright © 2010-2012 P.H. Andersson Copyright © 2010-2011 Olivier Tribout Copyright © 2012-2013 Ulrich Pegelow The owner of the darktable project is Johannes Hanika. Main developers are Johannes Hanika, Henrik Andersson, Tobias Ellinghaus, Pascal de Bruijn and Ulrich Pegelow. darktable is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. darktable is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with darktable. If not, see http://www.gnu.org/ licenses/. The present user manual is under license cc by-sa , meaning Attribution Share Alike . You can visit http://creativecommons.org/ about/licenses/ to get more information. Table of Contents Preface to this manual ............................................................................................... v 1. Overview ............................................................................................................... 1 1.1. User interface ............................................................................................. 3 1.1.1. Views ..............................................................................................
    [Show full text]
  • Imagen Y Diseño # Nombre 1 10 Christmas Templates 2 10 DVD
    Imagen Y Diseño # Nombre 1 10 Christmas Templates 2 10 DVD Photoshop PSD layer 3 10 Frames for Photoshop 4 1000 famous Vector Cartoons 5 114 fuentes de estilo Rock and Roll 6 12 DVD Plantillas Profesionales PSD 7 12 psd TEMPLATE 8 123 Flash Menu 9 140 graffiti font 10 150_Dreamweaver_Templates 11 1600 Vector Clip Arts 12 178 Companies Fonts, The Best Collection Of Fonts 13 1800 Adobe Photoshop Plugins 14 2.900 Avatars 15 20/20 Kitchen Design 16 20000$ Worth Of Adobe Fonts! with Adobe Type Manager Deluxe 17 21000 User Bars - Great Collection 18 240+ Gold Plug-Ins for Adobe Dreamweaver CS4 19 30 PSD layered for design.Vol1 20 300.000 Animation Gif 21 32.200 Avatars - MEGA COLLECTION 22 330 templates for Power Point 23 3900 logos de marcas famosas en vectores 24 3D Apartment: Condo Designer v3.0 25 3D Box Maker Pro 2.1 26 3D Button Creator Gold 3.03 27 3D Home Design 28 3D Me Now Professional 1.5.1.1 -Crea cabezas en 3D 29 3D PaintBrush 30 3D Photo Builder Professional 2.3 31 3D Shadow plug-in for Adobe Photoshop 32 400 Flash Web Animations 33 400+ professional template designs for Microsoft Office 34 4000 Professional Interactive Flash Animations 35 44 Cool Animated Cards 36 46 Great Plugins For Adobe After Effects 37 50 BEST fonts 38 5000 Templates PHP-SWISH-DHTM-HTML Pack 39 58 Photoshop Commercial Actions 40 59 Unofficial Firefox Logos 41 6000 Gradientes para Photoshop 42 70 POSTERS Alta Calidad de IMAGEN 43 70 Themes para XP autoinstalables 44 73 Custom Vector Logos 45 80 Golden Styles 46 82.000 Logos Brands Of The World 47 90 Obras
    [Show full text]
  • Affinity Photo-Digikam Summer 2020
    UCLA Research Workshop Series Summer 2020 Affinity Photo & digiKam Anthony Caldwell What is Affinity Photo? Wikipedia: Affinity Photo is a raster graphics editor Serif: If you could create your own photo editing software, it would work like this. What is digiKam? Wikipedia: digiKam is a free and open-source image organizer and tag editor digiKam: digiKam is an advanced open-source digital photo management application that provides a comprehensive set of tools for importing, managing, editing, and sharing photos and raw files. Color Color Space Wikipedia: A color space is a specific organization of colors. In combination with physical device profiling, it allows for reproducible representations of color, in both analog and digital representations. Color depth The human eye can distinguish around a million colors Color depth 1-bit color 2 colors 2-bit color 4 colors 3-bit color 8 colors 4-bit color 16 colors 5-bit color 32 colors 8-bit color 256 colors 12-bit color 4096 colors High color (15/16-bit) 32,768 colors or 65,536 colors True color (24-bit) 16,777,216 colors Deep color (30-bit) 1.073 billion 36-bit approximately 68.71 billion colors 48-bit approximately 281.5 trillion colors Note: different configurations of software and hardware can produce different color values for each bit depth listed Color Space Commission internationale de l’éclairage 1931 color space Image Source: https://dot-color.com Color Space Additive color mixing Image Source: https://en.wikipedia.org Color Space K Subtractive color mixing Image Source: https://en.wikipedia.org Color Space The Lab Color Space Image Source: https://docs.esko.com/ Color Space Color Space Comparison Image Source: https://www.photo.net Affinity Photo and digiKam… Questions? Anthony Caldwell UCLA Digital Research Consortium Scholarly Innovation Labs 11630L Charles E.
    [Show full text]
  • Rawkit Documentation Release 0.6.0
    rawkit Documentation Release 0.6.0 Cameron Paul, Sam Whited Sep 20, 2018 Contents 1 Requirements 3 2 Installing rawkit 5 3 Getting Help 7 4 Tutorials 9 5 Architecture and Design 13 6 API Reference 15 7 Indices and tables 73 Python Module Index 75 i ii rawkit Documentation, Release 0.6.0 Note: rawkit is still alpha quality software. Until it hits 1.0, it may undergo substantial changes, including breaking API changes. rawkit is a ctypes-based set of LibRaw bindings for Python inspired by Wand. It is licensed under the MIT License. from rawkit.raw import Raw from rawkit.options import WhiteBalance with Raw(filename='some/raw/image.CR2') as raw: raw.options.white_balance= WhiteBalance(camera=False, auto=True) raw.save(filename='some/destination/image.ppm') Contents 1 rawkit Documentation, Release 0.6.0 2 Contents CHAPTER 1 Requirements • Python – CPython 2.7+ – CPython 3.4+ – PyPy 2.5+ – PyPy3 2.4+ • LibRaw – LibRaw 0.16.x (API version 10) – LibRaw 0.17.x (API version 11) 3 rawkit Documentation, Release 0.6.0 4 Chapter 1. Requirements CHAPTER 2 Installing rawkit First, you’ll need to install LibRaw: • libraw on Arch • LibRaw on Fedora 21+ • libraw10 on Ubuntu Utopic+ • libraw-bin on Debian Jessie+ Now you can fetch rawkit from PyPi: $ pip install rawkit 5 rawkit Documentation, Release 0.6.0 6 Chapter 2. Installing rawkit CHAPTER 3 Getting Help Need help? Join the #photoshell channel on Freenode. As always, don’t ask to ask (just ask) and if no one is around: be patient, if you part before we can answer there’s not much we can do.
    [Show full text]
  • Schon Mal Dran Gedacht,Linux Auszuprobieren? Von G. Schmidt
    Schon mal dran gedacht, Linux auszuprobieren? Eine Einführung in das Betriebssystem Linux und seine Distributionen von Günther Schmidt-Falck Das Magazin AUSWEGE wird nun schon seit 2010 mit Hilfe des Computer-Betriebs- system Linux erstellt: Texte layouten, Grafiken und Fotos bearbeiten, Webseiten ge- stalten, Audio schneiden - alles mit freier, unabhängiger Software einer weltweiten Entwicklergemeinde. Aufgrund der guten eigenen Erfahrungen möchte der folgende Aufsatz ins Betriebssystem Linux einführen - mit einem Schwerpunkt auf der Distri- bution LinuxMint. Was ist Linux? „... ein hochstabiles, besonders schnelles und vor allem funktionsfähiges Betriebssystem, das dem Unix-System ähnelt, … . Eine Gemeinschaft Tausender programmierte es und verteilt es nun unter der GNU General Public Li- cense. Somit ist es frei zugänglich für jeden und kos- tenlos! Mehrere Millionen Leute, viele Organisatio- nen und besonders Firmen nutzen es weltweit. Die meisten nutzen es aus folgenden Gründen: • besonders schnell, stabil und leistungs- stark • gratis Support aus vielen Internet- Newsgruppen Tux, der Pinguin, ist das Linux-Maskottchen • übersichtliche Mailing-Listen • massenweise www-Seiten • direkter Mailkontakt mit dem Programmierer sind möglich • Bildung von Gruppen • kommerzieller Support“1 Linux ist heute weit verbreitet im Serverbereich: „Im Oktober 2012 wurden mindes- tens 32% aller Webseiten auf einem Linux-Server gehostet. Da nicht alle Linux-Ser- ver sich auch als solche zu erkennen geben, könnte der tatsächliche Anteil um bis zu 24% höher liegen. Damit wäre ein tatsächlicher Marktanteil von bis zu 55% nicht 1 http://www.linuxnetworx.com/linux-richtig-nutzen magazin-auswege.de – 2.11.2015 Schon mal dran gedacht, Linux auszuprobieren? 1 auszuschliessen. (…) Linux gilt innerhalb von Netzwerken als ausgesprochen sicher und an die jeweiligen Gegebenheiten anpassbar.
    [Show full text]
  • Release Notes for Fedora 20
    Fedora 20 Release Notes Release Notes for Fedora 20 Edited by The Fedora Docs Team Copyright © 2013 Fedora Project Contributors. 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. Java® is a registered trademark of Oracle and/or its affiliates. XFS® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL® is a registered trademark of MySQL AB in the United States, the European Union and other countries. All other trademarks are the property of their respective owners.
    [Show full text]
  • Saddle Seat Division
    NEW YORK STATE 4-H SADDLE SEAT DIVISION I. PERSONAL ATTIRE AND APPOINTMENTS A. Required 1. Approved protective helmet 2. Saddle suit of conservative colors or Kentucky jodhpurs with matching jacket (informal attire) 3. Day coats allowed in any class except equitation & showmanship at halter 4. Jodhpurs boots with a distinguishable heel 5. Tie 6. Shirt B. Optional 1. Gloves 2. Blunt rowelled or unrowelled spurs – must have strap 3. Whips C. Prohibited 1. Chaps 2. Rowelled spurs 3. Clip-on spurs II. TACK AND EQUIPMENT A. Required 1. Flat English type saddle 2. Full bridle or pelham, including cavesson, browband, throatlatch and appropriate curb chain 3. Triple fold leather, shaped leather or white web girth B. Optional 1. Saddle pad 2. Whips C. Prohibited 1. Chin straps or curb chains less than 1/2" in width 2. Forward seat English saddle 3. Western saddle 4. Breastplate 109 NYS 4-H Equine Show Rule Book NYS 4-H Saddle Seat Division 5. Dropped noseband 6. Kimberwicke 7. Martingale 8. Tie down 9. Protective boots 10. Draw reins, side reins, chambon, nose reins, gogue and other similar training devices. (This includes use for practice or warm-up.) 11. Bit converter D. Allowed in practice ring or warm-up 1. Running/working martingales/training forks 2. Leg wraps, splint boots 3. Bell boots III. CLASS DESCRIPTIONS Any equine (registered or grade) is eligible to compete in this division as long as all other 4-H requirements are met. Breed type is not a factor in judging. A. Saddle Seat Equitation - In equitation classes only the rider is being judged, therefore any equine that is suitable for this type of riding and which is capable of performing the required class routine is acceptable.
    [Show full text]
  • RASPBERRY PI PROJECTS Civilization: Beyond Earth Is Coming to Linux
    CONTENTS September LV006 The ninth project: create 115 page of awesome. Mission accomplished! 18 REGULARS SUBSCRIBE 06 News ON PAGE 60 The NSA is watching us drool over the new Model B Raspberry Pi. 08 Distrohopper Try Voyager 14.04, Netrunner and RHEL; and think on when 8 you name your next project. 10 Gaming RASPBERRY PI PROJECTS Civilization: Beyond Earth is coming to Linux. All other Track a space station, program activity rendered pointless. Minecraft, set up a security cam and 12 Speak your brains Let us know what’s going on in more. What are you waiting for? your precious cerebral cortex. Not you, Crown Prince Ekoku! 16 LV on tour The grapevine tingles with news from Edinburgh, Verona 30 and Bristol. 40 Interview Daniel Stone, one of the movers and shakers behind the Wayland display server. 54 Group test Do your productivity a favour by switching to one of these tiling window managers. 60 Subscribe! And whet your appetite for the feast of Free Software to come in LV007. Why KDE 5 is going to rock, and avoid the 62 Cloud admin Build, ship and run blunders of early 4.x releases distributed applications with containers and Docker. 64 Core technologies More arcane lore from Dr Chris Brown’s compendium of Linux. 68 FOSSpicks Picks so free, they’re freer than a bird dressed up as William Wallace. 110 Masterclass 34 38 26 Keep tabs on your hard FORK IT FAQ: KRITA SLACKWARE drive with Smart and Projects sometimes Apart from being Meet the oldest distro GSmartControl.
    [Show full text]
  • Week 8 Review of Everything “Everything”
    Week 8 Review of Everything “Everything” • Exposure (“Think Half/Double”) • Shutter, Apperture, ISO • 18% Gray • Gray card / palm trick - histogram - exposure compensation • White Balance • Sunny 16, Mooney 11, Sunsets • Lenses • Wide, Normal, Tele • Size, distance distortion • Depth of Field • Flash Questions Shutter Speed Cheat Sheet https://digital-photography-school.com/ photographers-shutter-speed-cheat-sheet- reference/ UPDATE! More Classes • Learn To See / Take Better Pictures • Software (currently Photoshop/Photoshop Elements/Photoshop Lightroom) • Specific Topic (Landscape, Sport, Studio, Lighting, Framing, Exhibition Planning, …) Backup • Do not rely on only one copy of your images • Try to keep a backup “off site” • You can never have too many backup copies • Verify that you can actually restore from your backup 3 Level Backup • External hard disk that contains a mirror image of the internal hard disk • NAS (Network Accessible Storage) with automatic backup of new and updated files • Online backup service Software • Camera manufacturer’s software package • Adobe Photoshop Elements • Adobe Photoshop Lightroom / Photoshop • 3rd Party applications Free Software • GIMP (http://www.gimp.org) • darktable (http://www.darktable.org) - no Windows version • LightZone (http://lightzoneproject.org) EXIF Data • Every image created by the camera comes with a lot of information: • Exposure • Camera/Lens • Misc GPS Tagging • Add location information to the EXIF information in your image • Will act as meta data and can be searched for • Can automatically add “human readable” information GPS Tagging - How? • Some cameras have built-in GPS receivers • Can use a hand-held GPS receiver • Software allows to add GPS information to images (e.g. Adobe Photoshop Lightroom).
    [Show full text]
  • Manuale Di Showfoto Manuale Di Showfoto
    Manuale di Showfoto Manuale di Showfoto 2 Indice 1 Introduzione 13 1.1 Sfondo . 13 1.1.1 Informazioni su Showfoto . 13 1.1.2 Segnalare gli errori . 13 1.1.3 Supporto . 13 1.1.4 Farsi coinvolgere . 13 1.2 Formati d’immagine supportati . 14 1.2.1 Introduzione . 14 1.2.2 Compressione di immagini statiche . 14 1.2.3 JPEG . 14 1.2.4 TIFF . 15 1.2.5 PNG . 15 1.2.6 PGF . 15 1.2.7 RAW . 15 2 La barra laterale di Showfoto 17 2.1 La barra laterale destra di Showfoto . 17 2.1.1 Introduzione alla barra laterale destra . 17 2.1.2 Le proprietà . 17 2.1.3 Metadati . 18 2.1.3.1 Tag EXIF . 18 2.1.3.1.1 Che cos’è EXIF . 18 2.1.3.1.2 Come usare il visore EXIF . 18 2.1.3.2 Tag Makernote . 19 2.1.3.2.1 Che cos’è Makernote . 19 2.1.3.2.2 Come usare il visore Makernote . 19 2.1.3.3 Tag IPTC . 19 2.1.3.3.1 Che cos’è IPTC . 19 2.1.3.3.2 Come usare il visore IPTC . 19 2.1.3.4 Tag XMP . 19 2.1.3.4.1 Che cos’è XMP . 19 2.1.3.4.2 Come usare il visore XMP . 20 2.1.4 Colori . 20 2.1.4.1 Visore Istogramma . 20 Manuale di Showfoto 2.1.4.2 Come usare un Istogramma . 21 2.1.5 Le mappe .
    [Show full text]
  • Security: Patches, BIOS and EC Write Protection, Reproducible Builds (Diffoscope) and Coreboot
    Published on Tux Machines (http://www.tuxmachines.org) Home > content > Security: Patches, BIOS and EC Write Protection, Reproducible Builds (DiffoScope) and Coreboot Security: Patches, BIOS and EC Write Protection, Reproducible Builds (DiffoScope) and Coreboot By Roy Schestowitz Created 25/07/2020 - 1:48am Submitted by Roy Schestowitz on Saturday 25th of July 2020 01:48:23 AM Filed under Security [1] Security updates for Friday [2] Security updates have been issued by Debian (qemu), Fedora (java-11-openjdk, mod_authnz_pam, podofo, and python27), openSUSE (cni-plugins, tomcat, and xmlgraphics- batik), Oracle (dbus and thunderbird), SUSE (freerdp, kernel, libraw, perl-YAML-LibYAML, and samba), and Ubuntu (libvncserver and openjdk-lts). Librem 14 Features BIOS and EC Write Protection [3] We have been focused on BIOS security at Purism since the beginning, starting with our initiative to replace the proprietary BIOS on our first generation laptops with the open source coreboot project. This was a great first step as it not only meant customers could avoid proprietary code in line with Purism?s social purpose, it also meant the BIOS on Purism laptops could be audited for security bugs and possible backdoors to help avoid problems like the privilege escalation bug in Lenovo?s AMI firmware. Our next goal in BIOS security was to eliminate, replace or otherwise bypass the proprietary Intel Management Engine (ME) in our firmware. We have made massive progress on this front and our Librem laptops, Librem Mini, and Librem Server all ship with an ME that?s been disabled and neutralized. After that we shifted focus to protecting the BIOS against tampering.
    [Show full text]
  • Introduction to Linux
    Presentation to U3A - Linux Introduction 8 June 2019 – Terry Schuster - [email protected] What is Linux? https://en.wikipedia.org/wiki/Linux https://www.iotforall.com/linux-operating-system-iot-devices/ In simple terms, Linux is an operating system which was developed to be a home-built version of UNIX, one of the first operating systems which could be run on different brands of mainframe computers with quite different types of hardware. Linux has developed to the extent that it is the leading operating system on servers and other big iron systems such as mainframe computers, and the only OS used on TOP500 supercomputers (since November 2017, having gradually eliminated all competitors). It is used by around 2.3 percent of desktop computers. The Chromebook, which runs the Linux kernel-based Chrome OS, dominates the US K–12 education market. In the mid 2000’s, Linux was quickly seen as a good building block for smartphones, as it provided an out- of-the-box modern, full-featured Operating System with very good device driver support, and that was considered both scalable for the new generation of devices and had the added benefit of being royalty free. It is now becoming very common in IoT devices, such as smart watches/refrigerators, home controllers, etc. etc. BTW, Tux is a penguin character and the official brand character of the Linux kernel. Originally created as an entry to a Linux logo competition, Tux is the most commonly used icon for Linux, although different Linux distributions depict Tux in various styles. The character is used in many other Linux programs and as a general symbol of Linux.
    [Show full text]