Chapter 2 Operating System Overview
... available processor • Multiple threads of execution within a single process may execute on different processors simultaneously ...
... available processor • Multiple threads of execution within a single process may execute on different processors simultaneously ...
Work with Files and Directories
... • In 1992, AT&T’s UNIX business was sold to Novell. Novell then turned over the UNIX to X/OPEN. The Open Group published the single UNIX Specification. • The Portable Operating System Interface (POSIX) is a set of standard operating interfaces based on UNIX. • Most UNIX vendors cooperate with The Op ...
... • In 1992, AT&T’s UNIX business was sold to Novell. Novell then turned over the UNIX to X/OPEN. The Open Group published the single UNIX Specification. • The Portable Operating System Interface (POSIX) is a set of standard operating interfaces based on UNIX. • Most UNIX vendors cooperate with The Op ...
Overview and History
... Linux kernel is original, but full system incorporates existing UNIX software uses many tools developed as part of Berkeley’s BSD operating system, MIT’s X Window System, and the Free Software Foundation's GNU project Linux kernel is distributed under the GNU General Public License (GPL): free t ...
... Linux kernel is original, but full system incorporates existing UNIX software uses many tools developed as part of Berkeley’s BSD operating system, MIT’s X Window System, and the Free Software Foundation's GNU project Linux kernel is distributed under the GNU General Public License (GPL): free t ...
William Stallings, Cryptography and Network Security 3/e
... • use an application specific gateway / proxy • has full access to protocol – user requests service from proxy – proxy validates request as legal – then actions request and returns result to user ...
... • use an application specific gateway / proxy • has full access to protocol – user requests service from proxy – proxy validates request as legal – then actions request and returns result to user ...
KernelSec: An Authorization Model in the Operating System Kernel
... is allowed to perform. Traditionally, the set of privileges primarily depends on the user running the process The disadvantage is that all the processes of a user are executed with the entire set of user privileges. In KernelSec, the enforcement engine bases the authorization not only on the user, b ...
... is allowed to perform. Traditionally, the set of privileges primarily depends on the user running the process The disadvantage is that all the processes of a user are executed with the entire set of user privileges. In KernelSec, the enforcement engine bases the authorization not only on the user, b ...
Operating System Security Fundamentals
... Services • Main component of operating system security environment • Operating system core utilities • Used to gain access to the OS and its features • Include ...
... Services • Main component of operating system security environment • Operating system core utilities • Used to gain access to the OS and its features • Include ...
Implementation of Log Based File Systems on Open Source
... One area of research is the tradeoffs associated with particular types of file systems. The file system is a software component that directly works with the hardware of the computer; it determines how and where files are stored on a physical medium such as a hard drive. In the realm of Windows, ther ...
... One area of research is the tradeoffs associated with particular types of file systems. The file system is a software component that directly works with the hardware of the computer; it determines how and where files are stored on a physical medium such as a hard drive. In the realm of Windows, ther ...
File System
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
... Error prone due to the amount of tasks in the kernel itself Used in most Linux systems Runs most services - like networking, filesystem, etc. - in user space More stable, but more complex designs ...
File management
... Sending programs to the CPU Allocating primary storage (RAM) to programs Controlling devices that programs requires ...
... Sending programs to the CPU Allocating primary storage (RAM) to programs Controlling devices that programs requires ...
chapter 1: operating system fundamentals
... • A collection of software modules to assist programmers in enhancing system efficiency, flexibility, and robustness • An Extended Machine from the users’ viewpoint • A Resource Manager from the system’s viewpoint ...
... • A collection of software modules to assist programmers in enhancing system efficiency, flexibility, and robustness • An Extended Machine from the users’ viewpoint • A Resource Manager from the system’s viewpoint ...
390aLecture01_15au
... virtual memory hierarchical file system; "everything" is a file lots of small programs that work together to solve larger problems security, users, access, and groups human-readable documentation included ...
... virtual memory hierarchical file system; "everything" is a file lots of small programs that work together to solve larger problems security, users, access, and groups human-readable documentation included ...
390aLecture01_15sp
... virtual memory hierarchical file system; "everything" is a file lots of small programs that work together to solve larger problems security, users, access, and groups human-readable documentation included ...
... virtual memory hierarchical file system; "everything" is a file lots of small programs that work together to solve larger problems security, users, access, and groups human-readable documentation included ...
OS API
... services provided by the OS Mostly accessed by programs via a highlevel Application Program Interface (API) rather than direct system call use ...
... services provided by the OS Mostly accessed by programs via a highlevel Application Program Interface (API) rather than direct system call use ...
TMDE Web Site
... Pacific since late March ’03 • Stable – Infrequent minor problems have been dealt with quickly • Reliable – Site off-line briefly (< 10 minutes each occurrence) 2 times in last 6 months • Secure – Strictly follows current Navy security requirements regarding access ...
... Pacific since late March ’03 • Stable – Infrequent minor problems have been dealt with quickly • Reliable – Site off-line briefly (< 10 minutes each occurrence) 2 times in last 6 months • Secure – Strictly follows current Navy security requirements regarding access ...
Course objectives: 1. To learn the fundamentals of Operating
... File Management: Overview, file Organization and access, file directories, File sharing, Record blocking, secondary storage management, File System Security, UNIX file Management. Case Study: Linux system, Design Principles, kernel modules, process management, scheduling, memory management, file sys ...
... File Management: Overview, file Organization and access, file directories, File sharing, Record blocking, secondary storage management, File System Security, UNIX file Management. Case Study: Linux system, Design Principles, kernel modules, process management, scheduling, memory management, file sys ...
Operating System Security Fundamentals
... Main component of operating system security environment Used to gain access to the OS and its features Include User authentication Remote access Administration tasks Password policies ...
... Main component of operating system security environment Used to gain access to the OS and its features Include User authentication Remote access Administration tasks Password policies ...
Operating systems
... The acquisition of basic knowledge of operating systems and work in them. Knowledge of modern operating systems. Understanding the key differences between objectoriented, modular, layered or systems based on a microkernel. Knowledge of the mechanisms of competitive execution and the problems that ca ...
... The acquisition of basic knowledge of operating systems and work in them. Knowledge of modern operating systems. Understanding the key differences between objectoriented, modular, layered or systems based on a microkernel. Knowledge of the mechanisms of competitive execution and the problems that ca ...
Introduction to Operating Systems - Seneca
... the user’s wishes to the operating system We will be using the Korn Shell This is a command-line interface Command line interfaces are programmable, making them useful for many tasks for which GUIs are poorly suited ...
... the user’s wishes to the operating system We will be using the Korn Shell This is a command-line interface Command line interfaces are programmable, making them useful for many tasks for which GUIs are poorly suited ...
Document
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
... Write, compile, debug, and execute C programs that correctly use system interfaces provided by UNIX (or a UNIXlike operating system). ...
presentation source
... Trust relationships: allow an user to be part of more than one domain. – If A trusts C, users in C can access resources in A (one-way) – two-way trusts : users of both both can access the other ...
... Trust relationships: allow an user to be part of more than one domain. – If A trusts C, users in C can access resources in A (one-way) – two-way trusts : users of both both can access the other ...
Introduction to Linux/Unix
... Redirection and Pipe File/Directory Permissions Process Management The nano Text Editor ...
... Redirection and Pipe File/Directory Permissions Process Management The nano Text Editor ...