Operativsystemer

An operating system is probably the most important part of the body of soft- ware which goes with any modern computer system. I ts importance is reflected in the large amount of manpower usually invested in its construction, and in the mystique by which it is often surrounded. To the non-expert the design and construction of operating systems has often appeared an activity impenetrable to those who do not practise it. I hope this book will go some way toward dispelling the mystique, and encourage a greater general understanding of the principles on which operating systems are constructed. The material in the book is based on a course of lectures I have given for the past few years to undergraduate students of computer science. The book is therefore a suitable introduction to operating systems for students who have a basic grounding in computer science, or for people who have worked with computers for some time. Ideally the reader should have a knowledge of prorramming and be familiar with general machine architecture, common data structures such as lists and trees, and the functions of system software such as compilers, loaders, and editors. I t will also be helpful if he has had some experience of using a large operating system, seeing it, as it were, from the out- side.

This book constitutes revised selected papers of the 8th Latin American High Performance Computing Conference, CARLA 2021, held in Guadalajara, Mexico, in October 2021. Due to the COVID-19 pandemic the conference was held in a virtual mode. The 16 revised full papers and 2 short papers presented were carefully reviewed and selected out of 45 submissions. The papers included in this book are organized according to the topics on ¿high performance computing; high performance computing and artificial intelligence; high performance computing applications.

Prepare for CompTIA Linux+ XK0-005 exam success with this Exam Cram from Pearson IT Certification, a leader in IT certification.   This is the eBook edition of the CompTIA Linux+ XK0-005 Exam Cram. This eBook does not include access to the Pearson Test Prep practice exams that comes with the print edition.   CompTIA Linux+ XK0-005 Exam Cram is an all-inclusive study guide designed to help you pass the updated version of the CompTIA Linux+ exam. Prepare for test day success with complete coverage of exam objectives and topics, plus hundreds of realistic practice questions. Extensive prep tools include quizzes, Exam Alerts, and our essential last-minute review Cram Sheet.   Covers the critical information needed to score higher on your Linux+ XK0-005 exam! Manage files and directories Configure and manage storage Manage software configurations Implement identity management Implement and configure firewalls Create simple shell scripts to automate common tasks Perform basic container operations Analyze and troubleshoot storage issues and network resource issues

Explore macOS tools and architecture for executing support tasks and system administration, and prepare for the Apple Certified Support Professional (ACSP) certification examKey FeaturesDelve into macOS Big Sur, from installation to managing apps and optimizing your environmentBecome an Apple Certified Support Professional (ACSP) with this comprehensive macOS support guideThe book is not intended to be a user guide, it covers concepts pertinent for a user acting as an administratorBook DescriptionApple is pushing the capabilities of its technologies to help users achieve high performance, including improvements in its OS running across all Mac systems, macOS, and new technologies such as M1 Silicon chips. This book walks you through macOS from a system administration and support point of view, exploring its latest features.The book starts by explaining macOS architecture, installation, and startup processes to enable you to get started with the OS. You'll learn how to manage users and discover techniques for user security and privacy. Moving on, you'll get to grips with the macOS file system and learn to manage disks, volumes, and partitions for effective file management. Most of the examples covered in this book are from an administrator's perspective; however, when relevant, a standard user's perspective is also presented. You'll find illustrations for Mac systems running macOS 11 (Big Sur), and when necessary, for macOS 10.15 (macOS Catalina). Finally, you'll explore advanced topics such as networking and using command-line tools for administration tasks.By the end of this macOS book, you'll be well-versed with macOS features, administration tasks, and best practices. You'll also be able to apply the concepts to increase your chances of success in obtaining Apple certifications such as Apple Certified Support Professional (ACSP).What you will LearnUnderstand the fundamentals of the macOS system and architectureConfigure key services and perform essential troubleshooting in your Mac systemInstall, update, and configure your local macOS system and identify the stages of the startup processCreate and manage a local user account and set up your customized macOS environmentManage your file systems, storage, and permissionsExplore practices and techniques to work with apps, networks, and security for your Mac systemDelve into administration tasks such as managing service resources and peripheralsWho this book is for¿If you are a Mac system administrator, support and help desk technician or engineer, or Mac power user looking to explore macOS architecture and tooling, then this book is for you. The book assumes beginner-level knowledge of the macOS environment and system administration.

Speicherverwaltung, Hardwareverwaltung, Prozessadministration und Interprozesskommunikation sind zentrale Aufgaben von Betriebssystemen. Die Konzepte und Prinzipien, auf denen klassische und moderne Betriebssysteme basieren, erläutert der Autor anhand von einschlägigen Aufgabenstellungen und Lösungen. Das Werk gibt damit eine verständliche Einführung in die Architektur von Betriebssystemen und eignet sich deshalb auch für die Lehre im Bachelorstudium.

This hands-on guidebook to the inner workings of containers peels back the layers to provide a deep understanding of what a container is, how containerization changes the way programs run, and how Kubernetes provides computing, networking, and storage.Containers ensure that software runs reliably no matter where it’s deployed, and Kubernetes lets you manage all of your containers from a single control plane. In this comprehensive tour of the open-source platform, each chapter includes a set of example scripts with just enough automation to start your container exploration with ease. Beginning with an overview of modern architecture and the benefits of orchestration, you'll quickly learn how to create containers; how to deploy, administer and debug Kubernetes clusters all the way down to the OS; and how container networking works at the packet level across multiple nodes in a cluster.

This edition marks the tenth Middleware conference. The ?rst conference was held in the Lake District of England in 1998, and its genesis re?ected a growing realization that middleware systems were a unique breed of distributed system requiring their own rigorous research and evaluation. Distributed systems had been around for decades, and the Middleware conference itself resulted from the combination of three previous conferences. But the attempt to build common platforms for many di?erent applications requireda unique combinationofhi- level abstraction and low-level optimization, and presented challenges di?erent from building a monolithic distributed system. Since that ?rst conference, the notion of what constitutes "e;middleware"e; has changed somewhat, and the focus of research papers has changed with it. The ?rst edition focused heavily on distributed objects as a metaphor for building systems, including six papers with "e;CORBA"e; or "e;ORB"e; in the title. In f- lowing years, the conference broadened to cover publish/subscribe messaging, peer-to-peer systems, distributed databases, Web services, and automated m- agement, among other topics. Innovative techniques and architectures surfaced in workshops, and expanded to become themes of the main conference, while changes in the industry and advances in other research areas helped to shape research agendas. This tenth edition includes papers on next-generation pl- forms (such as stream systems, pervasive systems and cloud systems), managing enterprise data centers, and platforms for building other platforms, among o- ers.

This was the ?rst conference of a new series devoted to the e?ective handling of soft issues in the design, development, and operation of computing systems. The conference brought together contributors from a range of relevant disciplines, including arti?cial intelligence, information systems, software engineering, and systems engineering. The keynote speakers, Piero Bonissone, Ray Paul, Sir Tony Hoare, Michael Jackson, and Derek McAuley have interests and experience that collectively span all of these ?elds. Soft issues involve information or knowledge that is uncertain, incomplete, or contradictory. Examples of where such issues arise include: - requirements management and software quality control in software engine- ing, - con?ict or multiple sources information management in information systems, - decision making/prediction in business management systems, - quality control in networks and user services in telecommunications, - traditional human rationality modeling in arti?cial intelligence, - data analysis in machine learning and data mining, - control management in engineering. The concept of dealing with uncertainty became prominent in the arti?cial intel- gence community nearly 20 years ago, when researchers realized that addressing uncertainty was an essential part of representing and reasoning about human knowledge in intelligent systems. The main methodologies that have emerged in this area are soft computing and computational intelligence.

This book is designed to cover three objectives. One, to provide a comprehensive resource to individuals (including novice, IT/Non-HP-UX administrators, HP-UX administrators) who intend to take the Certified System Administrator for HP-UX certification exam and pass it. Two, to provide a quick and valuable on-the-job resource to HP-UX administrators, administrators of other UNIX operating system software, IT managers, programmers, and DBAs working in the HP-UX environment. Three, to provide an easy-to-understand guide to novice and IT/non-HP-UX administrators who intend to learn HP-UX from the beginning.This book contains 33 chapters. The book is organized in such a way that it helps its audience understand concepts, implementation procedures, some basic troubleshooting, command syntax, configuration files, and daemons involved. There are three key areas: UNIX fundamentals, HP-UX system administration, and HP-UX network administration.1. UNIX Fundamentals covers the basics of UNIX. Most information is not specific to a particular UNIX flavor, but rather includes general UNIX concepts, file manipulation and security techniques, shell and awk programming, vi editor, basic commands, and other topics. Chapters 01 through 06 and chapter 21 cover this area. Unlike many other similar books, a chapter on shell scripting is presented after covering HP-UX System Administration chapters. This is done intentionally to provide readers with some practical examples based on the knowledge they have gained from UNIX Fundamentals and HP-UX System Administration chapters.2. HP-UX System Administration covers the HP-UX-specific system administration concepts and topics including HP-UX installation methods; software and patch management; user and group account administration; disk and device file management; LVM and file system administration; swap space and printer management; system startup and shutdown procedures; kernel reconfiguration techniques; backup, restore, and system recovery functions; job automation and process control; system logging and performance monitoring; and so on. Chapters 07 through 20 cover this area.3. HP-UX Network Administration covers HP-UX network administration concepts and topics such as OSI and TCP/IP models; network hardware overview; LAN card administration; IP subnetting and routing techniques; network troubleshooting tools; system startup services; naming services such as DNS, NIS, and LDAP; File sharing tools viz. NFS and AutoFS; Time synchronization using NTP; internet services administration; BootP/TFTP services; system security; and so on. Chapters 22 through 33 cover this area.The beginning of each chapter highlights objectives covered. The end of each chapter includes a summary as to what is learnt in the chapter. Throughout the book tables, figures, screen shots, and examples are given to explain concepts and tasks. The output generated as a result of running commands is highlighted in light grey background to differentiate it with surrounding text.The book includes several appendices one of which contains more than 550 practice exam questions. Tables of commands, important files, and service daemons are included in separate appendices.

The First International Conference on Digital Rights Management: Technology, Issues, Challenges and Systems (DRMTICS - pronounced 'dramatics'), took place in Sydney, Australia on 31st October - 2nd November, 2005. It was or- nized by the Centre for Information Security of the University of Wollongong and in cooperation with the International Association of Cryptologic Research (IACR) and IEEE Computer Society's Task Force on Information Assurance. DRMTICS isan internationalconferenceseriesthat coversthe areaof digital rights management, including research advancements of an applied and theor- ical nature. The goal is to have a broad coverage of the ?eld and related issues and subjects as the area evolves. Since the Internet and the computing infr- tructure has turned into a marketplace for content where information goods of various kinds are exchanged, this area is expected to grow and be part of the ongoing evolution of the information society. The DRM area is a unique blend of many diverse disciplines that include mathematics and cryptography, legal and social aspects, signal processing and watermarking, game theory, infor- tion theory, software and systems design and business analysis, and DRMTICS attempts to cover as much ground as possible, and to cover new results that will further spur new investigations on the foundations and practices of DRM. We hope that this ?rst conference marks the beginning of a fruitful and useful series of future conferences. This year, the conference received 57 submissions out of which 26 were - cepted for presentation after a rigorous refereeing process.

Embedded systems are ubiquitous. They appear in cell phones, microwave ovens, refrigerators, consumer electronics, cars, and jets. Some of these embedded s- tems are safety- or security-critical such as in medical equipment, nuclear plants, and X-by-wire control systems in naval, ground and aerospace transportation - hicles. With the continuing shift from hardware to software, embedded systems are increasingly dominated by embedded software. Embedded software is complex. Its engineering inherently involves a mul- disciplinary interplay with the physics of the embedding system or environment. Embedded software also comes in ever larger quantity and diversity. The next generation of premium automobiles will carry around one gigabyte of binary code. The proposed US DDX submarine is e?ectively a ?oating embedded so- ware system, comprising 30 billion lines of code written in over 100 programming languages. Embedded software is expensive. Cost estimates are quoted at around US$15- 30 per line (from commencement to shipping). In the defense realm, costs can range up to $100, while for highly critical applications, such as the Space Shuttle, the cost per line approximates $1,000. In view of the exponential increase in complexity, the projected costs of future embedded software are staggering.

SQL Server 2000 is the leading relational database for the Windows platform. It’s a full-featured, enterprise-class database server, but its ease of use and maintenance makes it suitable whether youre a junior, part-time, or advanced database administrator or developer. SQL Server expert and author Joseph Sack covers all SQL Server 2000 features, so you’ll be able to rely on this book when you’re in the field and need quick, effective solutions.Included are hundreds of practical recipes that describe and demonstrate the utility of a feature or functionwith the minimum necessary background theory. This quick and effective reference highlights the specifics of every SQL Server command or process. Further, this special signature edition contains a searchable PDF of the book, making it ideal to use as both a desktop reference, and a client-site field guide.