Cours - Systèmes d'exploitation et cloud
66 documents à télécharger gratuitement
Cours de systèmes d'exploitation et cloud partagés par des étudiants et des enseignants. Thèmes couverts : Linux, Unix, Windows Server, Docker, Kubernetes, virtualisation.
This document examines the concepts of variable scope and attributes in shell scripting. It discusses how variables are accessed and modified within functions, as well as how to manage variable visibility between processes. Additionally, it covers the importance of exporting variables for use in subprocesses.
The document introduces the Unified Process (UP) as a software development methodology that is iterative, incremental, and architecture-centric. It provides a systematic breakdown of the software lifecycle, detailing phases like inception, elaboration, construction, and transition. Each phase is described in terms of its objectives, activities, and deliverables, emphasizing the use of iterative cycles and the central role of use-case-driven design. Practical recommendations for requirement analysis, system architecture, design patterns, incremental development, and project management are ou...
Ce document pr sente une introduction g n rale sur les syst mes d'exploitation, en se concentrant principalement sur l'historique de UNIX et Linux. Il aborde galement les notions de multi-t che et les diff rences entre les syst mes d'exploitation classiques. Enfin, il explique le fonctionnement interne d'UNIX et son architecture.
This course focuses on mastering the Linux environment, programming shell scripts, and utilizing advanced text manipulation tools. Students will learn through a mixture of lectures and practical sessions, covering various Linux concepts and commands. The course includes a mix of grading based on continuous assessment and a final exam.
This document serves as an introduction to the practical part of a cloud computing course, primarily focusing on IBM Bluemix. It discusses technologies such as CloudFoundry, Docker, and OpenStack, and their application within a Platform as a Service (PaaS) context. The document also outlines various services offered by Bluemix and how they facilitate application development without the need for extensive server management.
Ce document aborde la gestion des processus dans les systèmes d'exploitation modernes. Il explique la différence entre un programme et un processus, ainsi que les états et transitions des processus. La structure d'un processus et son allocation de mémoire sont également abordées.
Ce cours couvre les principes fondamentaux des systèmes d'exploitation, y compris leurs rôles, caractéristiques, et composants. Il examine également l'architecture matérielle des ordinateurs et l'importance des utilisateurs dans l'exploitation des ressources matérielles. Enfin, il introduit les langages de programmation et la nécessité d'un système d'exploitation.
This document discusses Monte Carlo methods and their application in simulating financial models. It specifically focuses on diffusion processes and presents several exact methods for their simulation. The document includes practical exercises and theoretical foundations relevant to the stochastic differential equations involved.
Ce document traite des ressources nécessaires à l'exécution des processus en informatique et des problématiques liées à l'interblocage. Il définit différents types de ressources, leur comportement lors de l'allocation et de la libération, ainsi que les implications des ressources préemptibles et non préemptibles. Enfin, des exemples de la vie courante illustrent le concept d'interblocage.
Ce document traite des systèmes d'exploitation avancés, en se concentrant sur les ressources nécessaires à l'exécution des processus et les problèmes d'interblocage. Il explore la classification des ressources, leur allocation et libération, ainsi que les implications des ressources préemptibles et non préemptibles. Des exemples d'interblocages dans la vie courante sont également présentés.
Ce document traite de la synchronisation et de la communication entre processus dans les systèmes d'exploitation. Il explore les concepts de compétition et de coopération entre processus, ainsi que les mécanismes de synchronisation nécessaires pour gérer les conflits d'accès aux ressources partagées. Des exemples pratiques, tels que les opérations bancaires, illustrent ces notions.
This document discusses advanced operating systems focusing on process management and threading. It outlines the evolution from single program systems to modern multi-process systems and the fundamental concepts of processes in execution. Additionally, it describes the states of a process and their representations within the memory.
This document introduces beginners to the basics of using the Shell Bash environment on GNU/Linux systems. It outlines the historical significance and fundamental role of the shell, emphasizing its command interpreter functionality and its lightweight nature. The document explains key shell commands, file system navigation, and user management while providing insights into best practices, benefits, and limitations of the shell. It also warns about the risks associated with improper shell use and highlights foundational commands for effective interaction with the Linux operating system.
This document systematically covers Linux file and directory permissions, including specialized access management techniques like SUID, SGID, and sticky bits. It explains commands like chmod, umask, chown, and chgrp for controlling file and directory access. Key methodologies include managing user and group permissions, addressing default file permission settings, and employing ACLs for collaborative environments. The guide emphasizes detailed command-line examples for practical application of advanced permission concepts.
This document outlines key concepts for managing filesystems on Linux operating systems, as part of the LPI (Linux Professional Institute) certification preparation. Covered topics include manually mounting and unmounting filesystems, configuring boot-time mount processes using 'fstab,' and utilizing mounting options and commands like 'mount,' 'umount,' 'fuser,' and 'lsof.' The document also explores various filesystem types, options, and troubleshooting techniques for identifying occupied devices, handling removable media, and ensuring system consistency.
This document is a comprehensive guide for the 'Préparation LPI' exam focusing on the Vi/Vim text editor. It covers Vi's three operational modes: Command, Insert, and Ex mode, explaining their functionalities and common navigation commands. It includes instructions on text manipulation, line navigation, file management, and substitution commands, alongside tips for recovering from crashes and using Vim's additional tutorial tool. The material is structured for quick understanding and practice, identifying key LPI-specific utilities.
This document explains the management and modification of process priorities in Linux. It covers commands like 'nice' and 'renice', enabling users or root to set or adjust process priority levels. It highlights default priority ranges from -20 to 19, with root having exclusive permissions for negative priorities. Practical examples and usage scenarios for managing command-line program execution priorities are also provided.
This document provides a detailed overview of text processing and redirection commands in Linux. It covers tools like `cat`, `tac`, `split`, `od`, `tr`, `wc`, and others for text manipulation, along with explanations of flags and options. Advanced tasks such as sorting, joining, and editing text streams using `sort`, `join`, and `sed` are explained with examples. Emphasis is placed on using standard streams, redirection, and piping workflows to handle files efficiently. Clear examples and command options make it suitable for system administration and Linux certification preparation.
This document serves as a comprehensive guide to understanding and utilizing internal and online Linux documentation. It explains the use of key commands such as man, info, whatis, and apropos, and details their configuration and functionalities. It also provides an overview of file structures, including manual sections, environmental variables like MANPATH, and resources such as the Linux Documentation Project. Finally, it discusses notification methods for users via configuration files like /etc/issue and /etc/motd, emphasizing the importance of system notifications.
This document serves as a study guide for the LPI 101 Exam section 103.1, emphasizing the basics and advanced functionality of the Bash shell in Linux. It covers essential topics like command-line usage, shell environment variables, command types, valid shell configurations, and historical command recall. Additionally, it elaborates on shortcuts, common errors, command syntax, initialization files, and practical applications for managing shell behavior and execution.
The document describes the sequence of Linux system startup including BIOS POST, bootloader execution, and kernel loading, emphasizing detailed processes like GRUB and LILO functionalities. It highlights kernel options, initramfs for module loading, and key filesystem behaviors. Additionally, it explains Linux logging mechanisms, from log file structure to key system logs, and offers commands for log examination and management. The overall focus is on preparing learners for the LPI 101.2 exam, with practical guidance and technical insights.
The document provides an in-depth explanation of processes in operating systems, covering their structure, execution, and management. It details key concepts such as process states, multiprogramming, and process control blocks (PCB), highlighting the roles of the kernel and system resources. Methodologies for creating and destroying processes in Unix and Windows are extensively outlined, as are the fundamentals of process scheduling and CPU utilization strategies. Core points include inter-process communication, memory management, and algorithms for process scheduling aiming at improving CP...
The document provides an educational overview of operating system process management, starting with the fundamental concept of processes, their dynamic nature, and execution as programs. It explains important topics such as multiprogramming through pseudo-parallelism, process creation and genealogy, and the key memory and context components of a process. It also delves into core functionalities of operating systems like process states (active, ready, blocked), context switching, handling interruptions, and strategies for process scheduling to optimize CPU utilization and user satisfaction.
The document introduces the concept of virtualization in GNU/Linux, explaining its significance in system efficiency and resource optimization. It outlines various virtualization techniques, highlighting their applications and use cases. The content delves into specific virtualization products, comparing their features and performance. Overall, it emphasizes the benefits and practical implementation of virtualization in Linux systems.