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MASTERCLASS GNUPG MASTERCLASS You Wouldn’T Want Other People Opening Your Letters and BEN EVERARD Your Data Is No Different
MASTERCLASS GNUPG MASTERCLASS You wouldn’t want other people opening your letters and BEN EVERARD your data is no different. Encrypt it today! SECURE EMAIL WITH GNUPG AND ENIGMAIL Send encrypted emails from your favourite email client. our typical email is about as secure as a The first thing that you need to do is create a key to JOHN LANE postcard, which is good news if you’re a represent your identity in the OpenPGP world. You’d Ygovernment agency. But you wouldn’t use a typically create one key per identity that you have. postcard for most things sent in the post; you’d use a Most people would have one identity, being sealed envelope. Email is no different; you just need themselves as a person. However, some may find an envelope – and it’s called “Encryption”. having separate personal and professional identities Since the early 1990s, the main way to encrypt useful. It’s a personal choice, but starting with a single email has been PGP, which stands for “Pretty Good key will help while you’re learning. Privacy”. It’s a protocol for the secure encryption of Launch Seahorse and click on the large plus-sign email that has since evolved into an open standard icon that’s just below the menu. Select ‘PGP Key’ and called OpenPGP. work your way through the screens that follow to supply your name and email address and then My lovely horse generate the key. The GNU Privacy Guard (GnuPG), is a free, GPL-licensed You can, optionally, use the Advanced Key Options implementation of the OpenPGP standard (there are to add a comment that can help others identify your other implementations, both free and commercial – key and to select the cipher, its strength and set when the PGP name now refers to a commercial product the key should expire. -
Introduction to Programming in Fortran 77 for Students of Science and Engineering
Introduction to programming in Fortran 77 for students of Science and Engineering Roman GrÄoger University of Pennsylvania, Department of Materials Science and Engineering 3231 Walnut Street, O±ce #215, Philadelphia, PA 19104 Revision 1.2 (September 27, 2004) 1 Introduction Fortran (FORmula TRANslation) is a programming language designed speci¯cally for scientists and engineers. For the past 30 years Fortran has been used for such projects as the design of bridges and aeroplane structures, it is used for factory automation control, for storm drainage design, analysis of scienti¯c data and so on. Throughout the life of this language, groups of users have written libraries of useful standard Fortran programs. These programs can be borrowed and used by other people who wish to take advantage of the expertise and experience of the authors, in a similar way in which a book is borrowed from a library. Fortran belongs to a class of higher-level programming languages in which the programs are not written directly in the machine code but instead in an arti¯cal, human-readable language. This source code consists of algorithms built using a set of standard constructions, each consisting of a series of commands which de¯ne the elementary operations with your data. In other words, any algorithm is a cookbook which speci¯es input ingredients, operations with them and with other data and ¯nally returns one or more results, depending on the function of this algorithm. Any source code has to be compiled in order to obtain an executable code which can be run on your computer. -
Writing Fast Fortran Routines for Python
Writing fast Fortran routines for Python Table of contents Table of contents ............................................................................................................................ 1 Overview ......................................................................................................................................... 2 Installation ...................................................................................................................................... 2 Basic Fortran programming ............................................................................................................ 3 A Fortran case study ....................................................................................................................... 8 Maximizing computational efficiency in Fortran code ................................................................. 12 Multiple functions in each Fortran file ......................................................................................... 14 Compiling and debugging ............................................................................................................ 15 Preparing code for f2py ................................................................................................................ 16 Running f2py ................................................................................................................................. 17 Help with f2py .............................................................................................................................. -
Red Hat Enterprise Linux 6 Developer Guide
Red Hat Enterprise Linux 6 Developer Guide An introduction to application development tools in Red Hat Enterprise Linux 6 Dave Brolley William Cohen Roland Grunberg Aldy Hernandez Karsten Hopp Jakub Jelinek Developer Guide Jeff Johnston Benjamin Kosnik Aleksander Kurtakov Chris Moller Phil Muldoon Andrew Overholt Charley Wang Kent Sebastian Red Hat Enterprise Linux 6 Developer Guide An introduction to application development tools in Red Hat Enterprise Linux 6 Edition 0 Author Dave Brolley [email protected] Author William Cohen [email protected] Author Roland Grunberg [email protected] Author Aldy Hernandez [email protected] Author Karsten Hopp [email protected] Author Jakub Jelinek [email protected] Author Jeff Johnston [email protected] Author Benjamin Kosnik [email protected] Author Aleksander Kurtakov [email protected] Author Chris Moller [email protected] Author Phil Muldoon [email protected] Author Andrew Overholt [email protected] Author Charley Wang [email protected] Author Kent Sebastian [email protected] Editor Don Domingo [email protected] Editor Jacquelynn East [email protected] Copyright © 2010 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/. 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. -
FAKULT¨AT F¨UR INFORMATIK Cryogenic Enabling Power-Aware
FAKULTAT¨ FUR¨ INFORMATIK DER TECHNISCHEN UNIVERSITAT¨ MUNCHEN¨ Masterarbeit in Informatik Cryogenic Enabling Power-Aware Applications on Linux Alejandra Morales Ruiz FAKULTAT¨ FUR¨ INFORMATIK DER TECHNISCHEN UNIVERSITAT¨ MUNCHEN¨ Masterarbeit in Informatik Cryogenic Enabling Power-Aware Applications on Linux Cryogenic Ein Linux Kernel-Modul fur¨ Kooperatives Energiesparen Author: Alejandra Morales Ruiz Supervisor: Dr. Christian Grothoff Date: February 17, 2014 Ich versichere, dass ich dieses Master-Thesis selbstandig¨ verfasst und nur die angegebe- nen Quellen und Hilfsmittel verwendet habe. I assure the single handed composition of this master’s thesis only supported by declared resources. Munich, February 17, 2014 Alejandra Morales Ruiz Acknowledgments I want to thank Christian Grothoff for giving me the opportunity to write this thesis as well as for the support and advice given throughout its completion. I also thank the people at the Chair for Robotics and Embedded Systems, especially Reinhard Lafrenz and Steffen Wittmeier, who allowed me to access their laboratory and provided me with the necessary equipment to perform the energy measurements. Thanks to Danny Hughes and Wilfried Daniels, from the Katholieke Universiteit Leuven, for their advice and contributions to the experimentation and the subsequent results of this work. I would also like to express my gratitude to the whole community of Linux developers for sharing their knowledge and experience on the Internet, which has helped me not only during this thesis, but during all my studies. Finally, I would like to thank my parents and brothers, who always supported and en- couraged me to finish my studies abroad, and my partner, Angel,´ because this thesis would have never been possible without him. -
ARM Code Development in Windows
ARM Code Development in Windows By: Ali Nuhi This guide will describe how to develop code to be run on an embedded Linux system using an ARM processor (specifically the OMAP3530). Environment The Cygwin bash shell will be the environment used for code development. Download it from the below link. http://cygwin.com/install.html READ THE SITE. Download setup.exe and choose the packages you want to install. Some helpful packages to download are: -gcc4-core,g++ etc. (for c and c++ compiling of normal programs) -git core files and completion (version control system) -wget (utility to download files from the internet via HTTP and FTP) -VIM (text editor) -Xemacs (another text editor, better than vim) -nano (simple command line text editor) If you still use windows notepad for writing code please atleast upgrade to notepad++. Toolchain We will be compiling and creating files using CodeSourcery g++ lite toolchains. This is a modified version of GCC which will create files specifically for ARM target systems. Download this at: http://www.codesourcery.com/sgpp/lite/arm/portal/release1803 Download the Windows installer and execute. You can let it install as is unless you have some other install scheme on your computer. I highly recommend reading the getting started pdf that comes with CodeSourcery. Once it’s fully installed open up Cygwin and execute the below lines. $ export CYGPATH=cygpath $ export CYGPATH=c:/cygwin/bin/cygpath If you installed Cygwin to another directory then you must edit the second line. To use the compiler type the following and hit tab twice to see all of the possible options you have. -
Fortran Resources 1
Fortran Resources 1 Ian D Chivers Jane Sleightholme May 7, 2021 1The original basis for this document was Mike Metcalf’s Fortran Information File. The next input came from people on comp-fortran-90. Details of how to subscribe or browse this list can be found in this document. If you have any corrections, additions, suggestions etc to make please contact us and we will endeavor to include your comments in later versions. Thanks to all the people who have contributed. Revision history The most recent version can be found at https://www.fortranplus.co.uk/fortran-information/ and the files section of the comp-fortran-90 list. https://www.jiscmail.ac.uk/cgi-bin/webadmin?A0=comp-fortran-90 • May 2021. Major update to the Intel entry. Also changes to the editors and IDE section, the graphics section, and the parallel programming section. • October 2020. Added an entry for Nvidia to the compiler section. Nvidia has integrated the PGI compiler suite into their NVIDIA HPC SDK product. Nvidia are also contributing to the LLVM Flang project. Updated the ’Additional Compiler Information’ entry in the compiler section. The Polyhedron benchmarks discuss automatic parallelisation. The fortranplus entry covers the diagnostic capability of the Cray, gfortran, Intel, Nag, Oracle and Nvidia compilers. Updated one entry and removed three others from the software tools section. Added ’Fortran Discourse’ to the e-lists section. We have also made changes to the Latex style sheet. • September 2020. Added a computer arithmetic and IEEE formats section. • June 2020. Updated the compiler entry with details of standard conformance. -
Ethereal Developer's Guide Draft 0.0.2 (15684) for Ethereal 0.10.11
Ethereal Developer's Guide Draft 0.0.2 (15684) for Ethereal 0.10.11 Ulf Lamping, Ethereal Developer's Guide: Draft 0.0.2 (15684) for Ethere- al 0.10.11 by Ulf Lamping Copyright © 2004-2005 Ulf Lamping Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or any later version published by the Free Software Foundation. All logos and trademarks in this document are property of their respective owner. Table of Contents Preface .............................................................................................................................. vii 1. Foreword ............................................................................................................... vii 2. Who should read this document? ............................................................................... viii 3. Acknowledgements ................................................................................................... ix 4. About this document .................................................................................................. x 5. Where to get the latest copy of this document? ............................................................... xi 6. Providing feedback about this document ...................................................................... xii I. Ethereal Build Environment ................................................................................................14 1. Introduction .............................................................................................................15 -
Cygwin User's Guide
Cygwin User’s Guide Cygwin User’s Guide ii Copyright © Cygwin authors Permission is granted to make and distribute verbatim copies of this documentation provided the copyright notice and this per- mission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this documentation under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this documentation into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. Cygwin User’s Guide iii Contents 1 Cygwin Overview 1 1.1 What is it? . .1 1.2 Quick Start Guide for those more experienced with Windows . .1 1.3 Quick Start Guide for those more experienced with UNIX . .1 1.4 Are the Cygwin tools free software? . .2 1.5 A brief history of the Cygwin project . .2 1.6 Highlights of Cygwin Functionality . .3 1.6.1 Introduction . .3 1.6.2 Permissions and Security . .3 1.6.3 File Access . .3 1.6.4 Text Mode vs. Binary Mode . .4 1.6.5 ANSI C Library . .4 1.6.6 Process Creation . .5 1.6.6.1 Problems with process creation . .5 1.6.7 Signals . .6 1.6.8 Sockets . .6 1.6.9 Select . .7 1.7 What’s new and what changed in Cygwin . .7 1.7.1 What’s new and what changed in 3.2 . -
The GNU Compiler Collection on Zseries
The GNU Compiler Collection on zSeries Dr. Ulrich Weigand Linux for zSeries Development, IBM Lab Böblingen [email protected] Agenda GNU Compiler Collection History and features Architecture overview GCC on zSeries History and current status zSeries specific features and challenges Using GCC GCC optimization settings GCC inline assembly Future of GCC GCC and Linux Apache Samba mount cvs binutils gdb gcc Linux ls grep Kernel glibc DB2 GNU - essentials UDB SAP R/3 Unix - tools Applications GCC History Timeline January 1984: Start of the GNU project May 1987: Release of GCC 1.0 February 1992: Release of GCC 2.0 August 1997: EGCS project announced November 1997: Release of EGCS 1.0 April 1999: EGCS / GCC merge July 1999: Release of GCC 2.95 June 2001: Release of GCC 3.0 May/August 2002: Release of GCC 3.1/3.2 March 2003: Release of GCC 3.3 (estimated) GCC Features Supported Languages part of GCC distribution: C, C++, Objective C Fortran 77 Java Ada distributed separately: Pascal Modula-3 under development: Fortran 95 Cobol GCC Features (cont.) Supported CPU targets i386, ia64, rs6000, s390 sparc, alpha, mips, arm, pa-risc, m68k, m88k many embedded targets Supported OS bindings Unix: Linux, *BSD, AIX, Solaris, HP/UX, Tru64, Irix, SCO DOS/Windows, Darwin (MacOS X) embedded targets and others Supported modes of operation native compiler cross-compiler 'Canadian cross' builds GCC Architecture: Overview C C++ Fortran Java ... front-end front-end front-end front-end tree Optimizer rtx i386 s390 rs6000 sparc ... back-end back-end back-end -
Installing Freepbx 13 on Centos 7
Installing FreePBX 13 on CentOS 7 READ FIRST Manual installations of FreePBX is considered an EXPERTS ONLY exercise. This method of installation is enough to get CORE functionality of FreePBX. Non-commercial modules may not function as expected or detailed in the Wiki's. Certain modules and features may require additional software to be installed and configured on the server. **** COMMERCIAL MODULES CANNOT BE INSTALLED ON THIS OS **** Install Centos 7 **** COMMERCIAL MODULES CANNOT BE INSTALLED ON THIS OS **** Install Centos 7 Initial System Setup Disable selinux Update Your System Install Additional Required Dependencies Install Legacy Pear requirements Firewalld Basic Configuration Enable and Start MariaDB Enable and Start Apache Install Dependencies for Google Voice (if required) Install iksemel Add the Asterisk User Install and Configure Asterisk Download Asterisk source files. Compile and install DAHDI Compile and install pjproject Compile and Install jansson Compile and install Asterisk Install Asterisk Soundfiles. Set Asterisk ownership permissions. Install and Configure FreePBX A few small modifications to Apache. Download and install FreePBX. That's it! Automatic Startup Initial System Setup You MUST run all of these commands as the root user! You MUST disable selinux. selinux can cause strange behavior during the install Disable selinux In /etc/sysconfig/selinux , change the following lines: sed -i 's/\(^SELINUX=\).*/\SELINUX=disabled/' /etc/sysconfig/selinux sed -i 's/\(^SELINUX=\).*/\SELINUX=disabled/' /etc/selinux/config reboot, -
Emacspeak User's Guide
Emacspeak User's Guide Jennifer Jobst Revision History Revision 1.3 July 24,2002 Revised by: SDS Updated the maintainer of this document to Sharon Snider, corrected links, and converted to HTML Revision 1.2 December 3, 2001 Revised by: JEJ Changed license to GFDL Revision 1.1 November 12, 2001 Revised by: JEJ Revision 1.0 DRAFT October 19, 2001 Revised by: JEJ This document helps Emacspeak users become familiar with Emacs as an audio desktop and provides tutorials on many common tasks and the Emacs applications available to perform those tasks. Emacspeak User's Guide Table of Contents 1. Legal Notice.....................................................................................................................................................1 2. Introduction.....................................................................................................................................................2 2.1. What is Emacspeak?.........................................................................................................................2 2.2. About this tutorial.............................................................................................................................2 3. Before you begin..............................................................................................................................................3 3.1. Getting started with Emacs and Emacspeak.....................................................................................3 3.2. Emacs Command Conventions.........................................................................................................3