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Desktop Migration and Administration Guide
Red Hat Enterprise Linux 7 Desktop Migration and Administration Guide GNOME 3 desktop migration planning, deployment, configuration, and administration in RHEL 7 Last Updated: 2021-05-05 Red Hat Enterprise Linux 7 Desktop Migration and Administration Guide GNOME 3 desktop migration planning, deployment, configuration, and administration in RHEL 7 Marie Doleželová Red Hat Customer Content Services [email protected] Petr Kovář Red Hat Customer Content Services [email protected] Jana Heves Red Hat Customer Content Services Legal Notice Copyright © 2018 Red Hat, Inc. This document is licensed by Red Hat under the Creative Commons Attribution-ShareAlike 3.0 Unported License. If you distribute this document, or a modified version of it, you must provide attribution to Red Hat, Inc. and provide a link to the original. If the document is modified, all Red Hat trademarks must be removed. 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, the Red Hat logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. 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. -
Kirjoituspohja VTT Science
IENCE C • •S T S E C Small world for dynamic wireless cyber-physical N O H I N systems S O I V Dissertation L • O S 142 G T Y H • R Industries and consumer markets are today increasingly using G I E L VTT SCIEN CE S H E G services exposed from wireless sensor and actuator networks, A I R H C cyber-physical machine-to-machine systems. The motivation for H the research arises from problems detected in the remote 1 4 2 interaction with embedded devices over dynamic wireless networks in such systems. The selected approach is based on the application of the small- world paradigm to cyber-physical systems. It is here assumed that the concept of small world, "six degrees of separation", can be expanded to also cover communication with wireless embedded devices in cyber-physical systems context. The main contributions are the technical enablers referred to as dynamic communication spaces, dynamic M2M service spaces, configuration and remote use of services, communication overlay, access systems selection, integrated mobility, secure ad hoc networking, situated opportunistic communication, hierarchical networking for small-world networks, and short-cuts for network optimization. The enablers have been evaluated as separate technical methods and means by means of experiments and/or simulations. According to the evaluations, the enablers seem to work well as separate building blocks and that they can be combined to expand the concept of small world to also cover communication with embedded devices. Wireless short-cuts can improve the scalability and efficiency of dynamic wireless networking and weak links are essential in the neighbour discovery process. -
Ubuntu Kung Fu
Prepared exclusively for Alison Tyler Download at Boykma.Com What readers are saying about Ubuntu Kung Fu Ubuntu Kung Fu is excellent. The tips are fun and the hope of discov- ering hidden gems makes it a worthwhile task. John Southern Former editor of Linux Magazine I enjoyed Ubuntu Kung Fu and learned some new things. I would rec- ommend this book—nice tips and a lot of fun to be had. Carthik Sharma Creator of the Ubuntu Blog (http://ubuntu.wordpress.com) Wow! There are some great tips here! I have used Ubuntu since April 2005, starting with version 5.04. I found much in this book to inspire me and to teach me, and it answered lingering questions I didn’t know I had. The book is a good resource that I will gladly recommend to both newcomers and veteran users. Matthew Helmke Administrator, Ubuntu Forums Ubuntu Kung Fu is a fantastic compendium of useful, uncommon Ubuntu knowledge. Eric Hewitt Consultant, LiveLogic, LLC Prepared exclusively for Alison Tyler Download at Boykma.Com Ubuntu Kung Fu Tips, Tricks, Hints, and Hacks Keir Thomas The Pragmatic Bookshelf Raleigh, North Carolina Dallas, Texas Prepared exclusively for Alison Tyler Download at Boykma.Com Many of the designations used by manufacturers and sellers to distinguish their prod- ucts are claimed as trademarks. Where those designations appear in this book, and The Pragmatic Programmers, LLC was aware of a trademark claim, the designations have been printed in initial capital letters or in all capitals. The Pragmatic Starter Kit, The Pragmatic Programmer, Pragmatic Programming, Pragmatic Bookshelf and the linking g device are trademarks of The Pragmatic Programmers, LLC. -
Nix on SHARCNET
Nix on SHARCNET Tyson Whitehead May 14, 2015 Nix Overview An enterprise approach to package management I a package is a specific piece of code compiled in a specific way I each package is entirely self contained and does not change I each users select what packages they want and gets a custom enviornment https://nixos.org/nix Ships with several thousand packages already created https://nixos.org/nixos/packages.html SHARCNET What this adds to SHARCNET I each user can have their own custom environments I environments should work everywhere (closed with no external dependencies) I several thousand new and newer packages Current issues (first is permanent, second will likely be resolved) I newer glibc requires kernel 2.6.32 so no requin I package can be used but not installed/removed on viz/vdi https: //sourceware.org/ml/libc-alpha/2014-01/msg00511.html Enabling Nix Nix is installed under /home/nixbld on SHARCNET. Enable for a single sessiong by running source /home/nixbld/profile.d/nix-profile.sh To always enable add this to the end of ~/.bash_profile echo source /home/nixbld/profile.d/nix-profile.sh \ >> ~/.bash_profile Reseting Nix A basic reset is done by removing all .nix* files from your home directory rm -fr ~/.nix* A complete reset done by remove your Nix per-user directories rm -fr /home/nixbld/var/nix/profile/per-user/$USER rm -fr /home/nixbld/var/nix/gcroots/per-user/$USER The nix-profile.sh script will re-create these with the defaults next time it runs. Environment The nix-env commands maintains your environments I query packages (available and installed) I create a new environment from current one by adding packages I create a new environment from current one by removing packages I switching between existing environments I delete unused environements Querying Packages The nix-env {--query | -q} .. -
The GNOME Census: Who Writes GNOME?
The GNOME Census: Who writes GNOME? Dave Neary & Vanessa David, Neary Consulting © Neary Consulting 2010: Some rights reserved Table of Contents Introduction.........................................................................................3 What is GNOME?.............................................................................3 Project governance...........................................................................3 Why survey GNOME?.......................................................................4 Scope and methodology...................................................................5 Tools and Observations on Data Quality..........................................7 Results and analysis...........................................................................10 GNOME Project size.......................................................................10 The Long Tail..................................................................................11 Effects of commercialisation..........................................................14 Who does the work?.......................................................................15 Who maintains GNOME?................................................................17 Conclusions........................................................................................22 References.........................................................................................24 Appendix 1: Modules included in survey...........................................25 2 Introduction What -
OS Linux Desktop Effects
OS Linux Desktop Effects Tomáš Dlouhý Y04A1L Presentation Content • Basics • Composite Managers • Compiz Fusion • Basic Effects • Advanced Effects • Small scratch Y04A1L Presentation Basics I • Linux Kernel • X Server • Window Manager • Composite Manager Y04A1L Presentation Basics II • How does compositing works? Y04A1L Presentation Composite Managers I • Compiz • Compiz Quinnstorm known as Beryl • Kwin from KDE4 platform • Compiz Fusion (in next chapter) Y04A1L Presentation Composite Managers II • Compiz – Released by Novell in january 2006 – Include effects as Cube, rain, wobbly... – Supports newest NVIDIA / ATI cards only – Most stable – Supports KDE and GNOME Y04A1L Presentation Composite Managers III • Beryl – Fork of compiz – Extended effects from Compiz – Adding: Show, Animations, Emerald (window borders),... – Works with all graphics cards which supports 3d acceleration (requires driver with support 3d) – Supports KDE and GNOME Y04A1L Presentation Composite Managers IV • Kwin 4 – Relativly newest, many effects still under development – Few effects as: mouse position highlight, show all desktop, animations,... – Many effects dont require 3d acceleration (using X Server DRI) Y04A1L Presentation Compiz Fusion • After reunion Compiz and Beryl (renamed to Compiz Extras) • First release in summer 2007 • Adding all advatages from both projects • Come with more effects as Expo, Paint,... • CompizConfig Settings Manager Y04A1L Presentation Basic effects I • Cube – Most popular effect – Can have more then 4 desktops – Change background -
An User & Developer Perspective on Immutable Oses
An User & Developer Perspective on Dario Faggioli Virtualization SW. Eng. @ SUSE Immutable OSes [email protected] dariof @DarioFaggioli https://dariofaggioli.wordpress.com/ https://about.me/dario.faggioli About Me What I do ● Virtualization Specialist Sw. Eng. @ SUSE since 2018, working on Xen, KVM, QEMU, mostly about performance related stuff ● Daily activities ⇒ how and what for I use my workstation ○ Read and send emails (Evolution, git-send-email, stg mail, ...) ○ Write, build & test code (Xen, KVM, Libvirt, QEMU) ○ Work with the Open Build Service (OBS) ○ Browse Web ○ Test OSes in VMs ○ Meetings / Video calls / Online conferences ○ Chat, work and personal ○ Some 3D Printing ○ Occasionally play games ○ Occasional video-editing ○ Maybe scan / print some document 2 ● Can all of the above be done with an immutable OS ? Immutable OS: What ? Either: ● An OS that you cannot modify Or, at least: ● An OS that you will have an hard time modifying What do you mean “modify” ? ● E.g., installing packages ● ⇒ An OS on which you cannot install packages ● ⇒ An OS on which you will have an hard time installing packages 3 Immutable OS: What ? Seriously? 4 Immutable OS: Why ? Because it will stay clean and hard to break ● Does this sound familiar? ○ Let’s install foo, and it’s dependency, libfoobar_1 ○ Let’s install bar (depends from libfoobar_1, we have it already) ○ Actually, let’s add an external repo. It has libfoobar_2 that makes foo work better! ○ Oh no... libfoobar_2 would break bar!! ● Yeah. It happens. Even in the best families distros -
Release Notes for Fedora 15
Fedora 15 Release Notes Release Notes for Fedora 15 Edited by The Fedora Docs Team Copyright © 2011 Red Hat, Inc. and others. 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. -
How-To Gnome-Look Guide
HHOOWW--TTOO Written by David D Lowe GGNNOOMMEE--LLOOOOKK GGUUIIDDEE hen I first joined the harddisk, say, ~/Pictures/Wallpapers. right-clicking on your desktop Ubuntu community, I and selecting the appropriate You may have noticed that gnome- button (you know which one!). Wwas extremely look.org separates wallpapers into impressed with the amount of different categories, according to the customization Ubuntu had to size of the wallpaper in pixels. For Don't let acronyms intimidate offer. People posted impressive the best quality, you want this to you; you don't have to know screenshots, and mentioned the match your screen resolution. If you what the letters stand for to themes they were using. They don't know what your screen know what it is. Basically, GTK is soon led me to gnome-look.org, resolution is, click System > the system GNOME uses to the number one place for GNOME Preferences > Screen Resolution. display things like buttons and visual customization. The However, Ubuntu stretches controls. GNOME is Ubuntu's screenshots there looked just as wallpapers quite nicely if you picked default desktop environment. I impressive, but I was very the wrong size, so you needn't fret will only be dealing with GNOME confused as to what the headings about it. on the sidebar meant, and I had customization here--sorry no idea how to use the files I SVG is a special image format that Kubuntu and Xubuntu folks! downloaded. Hopefully, this guide doesn't use pixels; it uses shapes Gnome-look.org distinguishes will help you learn what I found called vectors, which means you can between two versions of GTK: out the slow way. -
Downloads." the Open Information Security Foundation
Performance Testing Suricata The Effect of Configuration Variables On Offline Suricata Performance A Project Completed for CS 6266 Under Jonathon T. Giffin, Assistant Professor, Georgia Institute of Technology by Winston H Messer Project Advisor: Matt Jonkman, President, Open Information Security Foundation December 2011 Messer ii Abstract The Suricata IDS/IPS engine, a viable alternative to Snort, has a multitude of potential configurations. A simplified automated testing system was devised for the purpose of performance testing Suricata in an offline environment. Of the available configuration variables, seventeen were analyzed independently by testing in fifty-six configurations. Of these, three variables were found to have a statistically significant effect on performance: Detect Engine Profile, Multi Pattern Algorithm, and CPU affinity. Acknowledgements In writing the final report on this endeavor, I would like to start by thanking four people who made this project possible: Matt Jonkman, President, Open Information Security Foundation: For allowing me the opportunity to carry out this project under his supervision. Victor Julien, Lead Programmer, Open Information Security Foundation and Anne-Fleur Koolstra, Documentation Specialist, Open Information Security Foundation: For their willingness to share their wisdom and experience of Suricata via email for the past four months. John M. Weathersby, Jr., Executive Director, Open Source Software Institute: For allowing me the use of Institute equipment for the creation of a suitable testing -
Development of Cloud-Based Media Player Using Microsoft Azure Services
eISSN:2600-7920 INTI JOURNAL Vol.1, 2018 (24) Development of Cloud-Based Media Player using Microsoft Azure Services Chong Fong Kim1, Chan Yong Kai 2 and Deshinta Arrova Dewi3 1,2,3 Faculty of Information Technology and Science, INTI International University, Nilai, Negeri Sembilan, Malaysia. Corresponding Author: [email protected] Abstract Playing songs offline consumes internal storage capacity of a device. Besides, playing songs, most of the time is an individual acting as a hobby and many song listeners do not have a common platform to share their hobby with others. By putting it on the cloud, the internal storage capacity can be reduced and the chance to share the common hobby with others is available. This paper aims to present the development of a Cloud-Based Media Player (CBMP) to ease the users in managing their song files and sharing with others. The CBMP utilizes a website as the main controller and connects to the Microsoft Azure Services to host the music database. Two separate sections are created for the user to upload and download their songs as private and share sections. Accordingly, users can choose the favored section they want to access. Not only features to upload and download songs are provided, but the CMBP also provides a search function that enables users to search songs in both different to make a search process faster. Due to latency in the cloud services, the suggested song format for CMBP is.MP3 files. The .MP3 files promote better compression rate than .MP4. Besides, .MP4 has higher latency that makes users waiting longer for processing the songs. -
The Top 10 Open Source Music Players Scores of Music Players Are Available in the Open Source World, and Each One Has Something That Is Unique
For U & Me Overview The Top 10 Open Source Music Players Scores of music players are available in the open source world, and each one has something that is unique. Here are the top 10 music players for you to check out. verybody likes to use a music player that is hassle- Amarok free and easy to operate, besides having plenty of Amarok is a part of the KDE project and is the default music Efeatures to enhance the music experience. The open player in Kubuntu. Mark Kretschmann started this project. source community has developed many music players. This The Amarok experience can be enhanced with custom scripts article lists the features of the ten best open source music or by using scripts contributed by other developers. players, which will help you to select the player most Its first release was on June 23, 2003. Amarok has been suited to your musical tastes. The article also helps those developed in C++ using Qt (the toolkit for cross-platform who wish to explore the features and capabilities of open application development). Its tagline, ‘Rediscover your source music players. Music’, is indeed true, considering its long list of features. 98 | FEBRUARY 2014 | OPEN SOURCE FOR YoU | www.LinuxForU.com Overview For U & Me Table 1: Features at a glance iPod sync Track info Smart/ Name/ Fade/ gapless and USB Radio and Remotely Last.fm Playback and lyrics dynamic Feature playback device podcasts controlled integration resume lookup playlist support Amarok Crossfade Both Yes Both Yes Both Yes Yes (Xine), Gapless (Gstreamer) aTunes Fade only