Linux Journal | February 2016 | Issue
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FY 2011 Annual Report
We're software roadies. Software Freedom Conservancy is a public charity that acts as a non-profit home for dozens of Free, Libre, and Open Source Software (FLOSS) projects. Conservancy©s charitable mission is to help improve, develop, and defend FLOSS, and we do that by providing business, legal, and administrative services to our member projects. We have the honor of working with member projects comprised of, in our humble opinion, many of the best software developers in the world. Some of our member projects develop system software so ubiquitous that it permeates virtually every part of our society©s electronics-driven lifestyle. Other member projects are redefining how software will be written and even how computer science will be taught to the next generation of developers. Still others find their niche by solving a small-but- persistent problem better than anyone else ± and attract a cult following of users because of it. And, best of all, all of our member projects release their software under a license that allows the public to study, use, improve, and share the source code. Conservancy provides all of our ªrock starº member projects with a comprehensive suite of services, and then we get out of their way to let them do what they do best: write great software for the public©s benefit. Our structure. Conservancy acts as a fiscal sponsor to our member projects. We©ve engaged the leadership of each member project©s developer community and executed a fiscal sponsorship agreement that allows us to adopt that project as an official part of Conservancy©s corporate structure. -
Ultumix GNU/Linux 0.0.1.7 32 Bit!
Welcome to Ultumix GNU/Linux 0.0.1.7 32 Bit! What is Ultumix GNU/Linux 0.0.1.7? Ultumix GNU/Linux 0.0.1.7 is a full replacement for Microsoft©s Windows and Macintosh©s Mac OS for any Intel based PC. Of course we recommend you check the system requirements first to make sure your computer meets our standards. The 64 bit version of Ultumix GNU/Linux 0.0.1.7 works faster than the 32 bit version on a 64 bit PC however the 32 bit version has support for Frets On Fire and a few other 32 bit applications that won©t run on 64 bit. We have worked hard to make sure that you can justify using 64 bit without sacrificing too much compatibility. I would say that Ultumix GNU/Linux 0.0.1.7 64 bit is compatible with 99.9% of all the GNU/Linux applications out there that will work with Ultumix GNU/Linux 0.0.1.7 32 bit. Ultumix GNU/Linux 0.0.1.7 is based on Ubuntu 8.04 but includes KDE 3.5 as the default interface and has the Mac4Lin Gnome interface for Mac users. What is Different Than Windows and Mac? You see with Microsoft©s Windows OS you have to defragment your computer, use an anti-virus, and run chkdsk or a check disk manually or automatically once every 3 months in order to maintain a normal Microsoft Windows environment. With Macintosh©s Mac OS you don©t have to worry about fragmentation but you do have to worry about some viruses and you still should do a check disk on your system every once in a while or whatever is equivalent to that in Microsoft©s Windows OS. -
Linux Journal | August 2014 | Issue
™ SPONSORED BY Since 1994: The Original Magazine of the Linux Community AUGUST 2014 | ISSUE 244 | www.linuxjournal.com PROGRAMMING HOW-TO: + OpenGL Build, Develop Programming and Validate Creation of RPMs USE VAGRANT Sysadmin Cloud for an Easier Troubleshooting Development with dhclient Workflow Tips for PROMISE Becoming a THEORY Web Developer An In-Depth A Rundown Look of Linux for Recreation V WATCH: ISSUE OVERVIEW LJ244-Aug2014.indd 1 7/23/14 6:56 PM Get the automation platform that makes it easy to: Build Infrastructure Deploy Applications Manage In your data center or in the cloud. getchef.com LJ244-Aug2014.indd 2 7/23/14 11:41 AM Are you tiredtiered of of dealing dealing with with proprietary proprietary storage? storage? ® 9%2Ä4MHÆDCÄ2SNQ@FD ZFS Unified Storage zStax StorCore from Silicon - From modest data storage needs to a multi-tiered production storage environment, zStax StorCore zStax StorCore 64 zStax StorCore 104 The zStax StorCore 64 utilizes the latest in The zStax StorCore 104 is the flagship of the dual-processor Intel® Xeon® platforms and fast zStax product line. With its highly available SAS SSDs for caching. The zStax StorCore 64 configurations and scalable architecture, the platform is perfect for: zStax StorCore 104 platform is ideal for: VPDOOPHGLXPRIILFHILOHVHUYHUV EDFNHQGVWRUDJHIRUYLUWXDOL]HGHQYLURQPHQWV VWUHDPLQJYLGHRKRVWV PLVVLRQFULWLFDOGDWDEDVHDSSOLFDWLRQV VPDOOGDWDDUFKLYHV DOZD\VDYDLODEOHDFWLYHDUFKLYHV TalkTalk with with an anexpert expert today: today: 866-352-1173 866-352-1173 - http://www.siliconmechanics.com/zstax LJ244-Aug2014.indd 3 7/23/14 11:41 AM AUGUST 2014 CONTENTS ISSUE 244 PROGRAMMING FEATURES 64 Vagrant 74 An Introduction to How to use Vagrant to create a OpenGL Programming much easier development workflow. -
Riscv-Software-Stack-Tutorial-Hpca2015
Software Tools Bootcamp RISC-V ISA Tutorial — HPCA-21 08 February 2015 Albert Ou UC Berkeley [email protected] Preliminaries To follow along, download these slides at http://riscv.org/tutorial-hpca2015.html 2 Preliminaries . Shell commands are prefixed by a “$” prompt. Due to time constraints, we will not be building everything from source in real-time. - Binaries have been prepared for you in the VM image. - Detailed build steps are documented here for completeness but are not necessary if using the VM. Interactive portions of this tutorial are denoted with: $ echo 'Hello world' . Also as a reminder, these slides are marked with an icon in the upper-right corner: 3 Software Stack . Many possible combinations (and growing) . But here we will focus on the most common workflows for RISC-V software development 4 Agenda 1. riscv-tools infrastructure 2. First Steps 3. Spike + Proxy Kernel 4. QEMU + Linux 5. Advanced Cross-Compiling 6. Yocto/OpenEmbedded 5 riscv-tools — Overview “Meta-repository” with Git submodules for every stable component of the RISC-V software toolchain Submodule Contents riscv-fesvr RISC-V Frontend Server riscv-isa-sim Functional ISA simulator (“Spike”) riscv-qemu Higher-performance ISA simulator riscv-gnu-toolchain binutils, gcc, newlib, glibc, Linux UAPI headers riscv-llvm LLVM, riscv-clang submodule riscv-pk RISC-V Proxy Kernel (riscv-linux) Linux/RISC-V kernel port riscv-tests ISA assembly tests, benchmark suite All listed submodules are hosted under the riscv GitHub organization: https://github.com/riscv 6 riscv-tools — Installation . Build riscv-gnu-toolchain (riscv*-*-elf / newlib target), riscv-fesvr, riscv-isa-sim, and riscv-pk: (pre-installed in VM) $ git clone https://github.com/riscv/riscv-tools $ cd riscv-tools $ git submodule update --init --recursive $ export RISCV=<installation path> $ export PATH=${PATH}:${RISCV}/bin $ ./build.sh . -
Operating Systems and Applications for Embedded Systems >>> Toolchains
>>> Operating Systems And Applications For Embedded Systems >>> Toolchains Name: Mariusz Naumowicz Date: 31 sierpnia 2018 [~]$ _ [1/19] >>> Plan 1. Toolchain Toolchain Main component of GNU toolchain C library Finding a toolchain 2. crosstool-NG crosstool-NG Installing Anatomy of a toolchain Information about cross-compiler Configruation Most interesting features Sysroot Other tools POSIX functions AP [~]$ _ [2/19] >>> Toolchain A toolchain is the set of tools that compiles source code into executables that can run on your target device, and includes a compiler, a linker, and run-time libraries. [1. Toolchain]$ _ [3/19] >>> Main component of GNU toolchain * Binutils: A set of binary utilities including the assembler, and the linker, ld. It is available at http://www.gnu.org/software/binutils/. * GNU Compiler Collection (GCC): These are the compilers for C and other languages which, depending on the version of GCC, include C++, Objective-C, Objective-C++, Java, Fortran, Ada, and Go. They all use a common back-end which produces assembler code which is fed to the GNU assembler. It is available at http://gcc.gnu.org/. * C library: A standardized API based on the POSIX specification which is the principle interface to the operating system kernel from applications. There are several C libraries to consider, see the following section. [1. Toolchain]$ _ [4/19] >>> C library * glibc: Available at http://www.gnu.org/software/libc. It is the standard GNU C library. It is big and, until recently, not very configurable, but it is the most complete implementation of the POSIX API. * eglibc: Available at http://www.eglibc.org/home. -
Cómo Usar El Software Libre Para Hacer Tareas De Colegio. Ing
Cómo usar el software libre para hacer tareas de colegio. Ing. Ricardo Naranjo Faccini, M.Sc. 2020-10-20 Bogotá 2018 Bogotá 2019 https://www.skinait.com/tareas-opensource-Escritos-50/ ¿Han¿Han escuchadoescuchado sobre?sobre? ● FraudeFraude – Acción que resulta contraria a la verdad y a la rectitud en perjuicio de una persona u organización – Conducta deshonesta o engañosa con el fin de obtener alguna injusta ventaja sobre otra persona. ● PlagioPlagio – La acción de «copiar en lo sustancial obras ajenas, dándolas como propias» ¿Han¿Han escuchadoescuchado sobre?sobre? ● Piratería:Piratería: – AsaltoAsalto yy roborobo dede embarcacionesembarcaciones enen elel mar.mar. – InfracciónInfracción dede derechosderechos dede autor,autor, infraccióninfracción dede copyrightcopyright oo violaciónviolación dede copyrightcopyright > – UsoUso nono autorizadoautorizado oo prohibidoprohibido dede obrasobras cubiertascubiertas porpor laslas leyesleyes dede derechosderechos dede autorautor ● Copia. ● Reproducción. ● Hacer obras derivadas. ¡Pero¡Pero venimosvenimos aa hablarhablar dede LIB!"#$%&LIB!"#$%& ● SoftwareSoftware librelibre – Linux, GIMP, inkscape, pitivi, LibreOffice.org ● FormatosFormatos abiertosabiertos – Garantizar acceso a largo plazo – Fomentar la competencia – Open Document Format (ISO/IEC 26300) – PDF – ogv, ogg ● ProtocolosProtocolos dede comunicacióncomunicación estándarestándar – http – smtp; pop3/imap – smb – vnc ● Texto – HTML (formato estándar de las páginas web) – Office Open XML ISO/IEC 29500:20084 ● (para documentos de oficina) -
Compiler Construction
Compiler Construction Chapter 11 Compiler Construction Compiler Construction 1 A New Compiler • Perhaps a new source language • Perhaps a new target for an existing compiler • Perhaps both Compiler Construction Compiler Construction 2 Source Language • Larger, more complex languages generally require larger, more complex compilers • Is the source language expected to evolve? – E.g., Java 1.0 ! Java 1.1 ! . – A brand new language may undergo considerable change early on – A small working prototype may be in order – Compiler writers must anticipate some amount of change and their design must therefore be flexible – Lexer and parser generators (like Lex and Yacc) are therefore better than hand- coding the lexer and parser when change is inevitable Compiler Construction Compiler Construction 3 Target Language • The nature of the target language and run-time environment influence compiler construction considerably • A new processor and/or its assembler may be buggy Buggy targets make it difficult to debug compilers for that target! • A successful source language will persist over several target generations – E.g., 386 ! 486 ! Pentium ! . – Thus the design of the IR is important – Modularization of machine-specific details is also important Compiler Construction Compiler Construction 4 Compiler Performance Issues • Compiler speed • Generated code quality • Error diagnostics • Portability • Maintainability Compiler Construction Compiler Construction 5 Compiler Speed • Reduce the number of modules • Reduce the number of passes Perhaps generate machine -
A Model-Driven Development and Verification Approach
A MODEL-DRIVEN DEVELOPMENT AND VERIFICATION APPROACH FOR MEDICAL DEVICES by Jakub Jedryszek B.S., Wroclaw University of Technology, Poland, 2012 B.A., Wroclaw University of Economics, Poland, 2012 A THESIS submitted in partial fulfillment of the requirements for the degree MASTER OF SCIENCE Department of Computing and Information Sciences College of Engineering KANSAS STATE UNIVERSITY Manhattan, Kansas 2014 Approved by: Major Professor John Hatcliff Abstract Medical devices are safety-critical systems whose failure may put human life in danger. They are becoming more advanced and thus more complex. This leads to bigger and more complicated code-bases that are hard to maintain and verify. Model-driven development provides high-level and abstract description of the system in the form of models that omit details, which are not relevant during the design phase. This allows for certain types of verification and hazard analysis to be performed on the models. These models can then be translated into code. However, errors that do not exist in the models may be introduced during the implementation phase. Automated translation from verified models to code may prevent to some extent. This thesis proposes approach for model-driven development and verification of medi- cal devices. Models are created in AADL (Architecture Analysis & Design Language), a language for software and hardware architecture modeling. AADL models are translated to SPARK Ada, contract-based programming language, which is suitable for software veri- fication. Generated code base is further extended by developers to implement internals of specific devices. Created programs can be verified using SPARK tools. A PCA (Patient Controlled Analgesia) pump medical device is used to illustrate the primary artifacts and process steps. -
Using Emerge for Kstars on OS X Revised
Instructions for Installing KStars, Dependencies, and related software on OS X with Emerge with the intent of creating an App bundle 1. Make sure you have home-brew installed. brew.sh 2. Make sure that you have git, make, and cmake installed. 3. Install some dependencies using homebrew brew install cmake wget coreutils p7zip gettext ninja python3 ninja bison boost shared-mime-info 4. And some more: brew tap homebrew/science brew install pkgconfig brew install cfitsio brew install cmake brew install eigen brew install astrometry-net brew install xplanet (optional) 5. here If you do not already have qt 5 installed, then you will need it. By the way, this can take a very long time. You can also download QT5 from their website to your home directory. I did this with QT Creator and just specified the path to it. But it should also work with the homebrew version. brew install qt5 --with-dbus To download QT5 from their website, you can go here: www.qt.io/download-open-source/ 6. I followed these instructions to build INDI from source and get it installed on the Mac in the proper location, but since then we have found that it is much easier to install using homebrew dependencies which we put (and you already did) in step 3: indilib.org/forum/general/210-howto-buil...st-libindi-ekos.html Do this at the command line: mkdir ~/Projects cd ~/Projects git clone git://github.com/indilib/indi.git Edit the file CMakeLists.txt in libindi to add the two base.64.c additions and lilxml.c additions (We have to get them to change this in Libindi so we don't -
Linux Everywhere a Look at Linux Outside the World of Desktops
Linux Everywhere A look at Linux outside the world of desktops CIS 191 Spring 2012 – Guest Lecture by Philip Peng Lecture Outline 1. Introduction 2. Different Platforms 3. Reasons for Linux 4. Cross-compiling 5. Case Study: iPodLinux 6. Questions 2 What’s in common? 3 All your hardware are belong to us • Linux is everywhere – If its programmable, you can put Linux on it! – Yes, even a microwave CES 2010, microwave running Android: http://www.handlewithlinux.com/linux-washing-cooking 4 Servers • What servers use – Stability, security, free – Examples: ◦ CentOS ◦ Debian ◦ Red Hat 5 Desktop • What you use – Free Windows/Mac alternative – Examples: ◦ Ubuntu ◦ Fedora ◦ PCLinuxOS 6 Gaming Devices • What (white-hat) hackers do – To run “homebrew” software – Examples: ◦ PS3, Wii, XBOX ◦ PS2, GameCube ◦ Dreamcast ◦ PSP, DS ◦ Open Pandora, GP2X 7 Mobile Devices • What distributors are developing – Community contribution – Examples ◦ Android ◦ Maemo/MeeGo/Tizen ◦ Openmoko 8 Embedded Devices • What embedded hardware run – Small footprint, dev tools – Examples ◦ RTLinux (real-time) ◦ μClinux (no MMU) ◦ Ångström (everything) 9 Why? 10 Free! • Free! – As in freedom, i.e. open source – As in beer, i.e. vs paid upgrades 11 Homebrew! • Run own software – Your hardware your software? 12 Support! • Community contribution – “For the greater good” (i.e. users) – Everyone contributes ◦ Specialists from all over the world – Existing hardware support ◦ Many already supported computer architecture ◦ Modify existing drivers 13 Lots of support! 14 Why not? • Because we can – If its hackable, it can run Linux 15 How? • How do we get Linux running on XXX? • Port: A version of software modified to run on a different target platform – The PS3 port of Fedora is a modified build of Fedora compiled to run on the PS3 architecture – e.g. -
DM-Relay - Safe Laptop Mode Via Linux Device Mapper
' $ DM-Relay - Safe Laptop Mode via Linux Device Mapper Study Thesis by cand. inform. Fabian Franz at the Faculty of Informatics Supervisor: Prof. Dr. Frank Bellosa Supervising Research Assistant: Dipl.-Inform. Konrad Miller Day of completion: 04/05/2010 &KIT – Universitat¨ des Landes Baden-Wurttemberg¨ und nationales Forschungszentrum in der Helmholtz-Gemeinschaft www.kit.edu % I hereby declare that this thesis is my own original work which I created without illegitimate help by others, that I have not used any other sources or resources than the ones indicated and that due acknowledgment is given where reference is made to the work of others. Karlsruhe, April 5th, 2010 Contents Deutsche Zusammenfassung xi 1 Introduction 1 1.1 Problem Definition . .1 1.2 Objectives . .1 1.3 Methodology . .1 1.4 Contribution . .2 1.5 Thesis Outline . .2 2 Background 3 2.1 Problems of Disk Power Management . .3 2.2 State of the Art . .4 2.3 Summary of this chapter . .8 3 Analysis 9 3.1 Pro and Contra . .9 3.2 A new approach . 13 3.3 Analysis of Proposal . 15 3.4 Summary of this chapter . 17 4 Design 19 4.1 Common problems . 19 4.2 System-Design . 21 4.3 Summary of this chapter . 21 5 Implementation of a dm-module for the Linux kernel 23 5.1 System-Architecture . 24 5.2 Log suitable for Flash-Storage . 28 5.3 Using dm-relay in practice . 31 5.4 Summary of this chapter . 31 vi Contents 6 Evaluation 33 6.1 Methodology . 33 6.2 Benchmarking setup . -
Continuous Auditing of SSH Servers to Mitigate Brute-Force Attacks Phuong M
CAUDIT: Continuous Auditing of SSH Servers To Mitigate Brute-Force Attacks Phuong M. Cao, Yuming Wu, and Subho S. Banerjee, UIUC; Justin Azoff and Alex Withers, NCSA; Zbigniew T. Kalbarczyk and Ravishankar K. Iyer, UIUC https://www.usenix.org/conference/nsdi19/presentation/cao This paper is included in the Proceedings of the 16th USENIX Symposium on Networked Systems Design and Implementation (NSDI ’19). February 26–28, 2019 • Boston, MA, USA ISBN 978-1-931971-49-2 Open access to the Proceedings of the 16th USENIX Symposium on Networked Systems Design and Implementation (NSDI ’19) is sponsored by CAUDIT: Continuous Auditing of SSH Servers to Mitigate Brute-Force Attacks Phuong M. Cao1, Yuming Wu1, Subho S. Banerjee1, Justin Azoff2;3, Alexander Withers3, Zbigniew T. Kalbarczyk1, Ravishankar K. Iyer1 1University of Illinois at Urbana-Champaign, 2Corelight, 3National Center for Supercomputing Applications Abstract While only a small fraction of such attempts succeed, they This paper describes CAUDIT1, an operational system have led to major misuses in 51% of 1,800 surveyed organi- deployed at the National Center for Supercomputing Applica- zations, with a financial impact of up to $500,000 per organi- tions (NCSA) at the University of Illinois. CAUDIT is a fully zation [7]. automated system that enables the identification and exclusion This paper describes the production deployment of of hosts that are vulnerable to SSH brute-force attacks. Its CAUDIT at the National Center for Supercomputing Ap- key features include: 1) a honeypot for attracting SSH-based plications (NCSA) at the University of Illinois over a period attacks over a /16 IP address range and extracting key meta- of 463 days.