Booting and Shutting Down UNIX Flavored Operating Systems
... Failure to properly shut down can cause damage to the system. There are various was to shut down a UNIX system; generally a command to shut down the system is issued from the command line. Here are a few commands: – shutdown: Broadcasts a message to all users logged in prompting a system shut ...
... Failure to properly shut down can cause damage to the system. There are various was to shut down a UNIX system; generally a command to shut down the system is issued from the command line. Here are a few commands: – shutdown: Broadcasts a message to all users logged in prompting a system shut ...
Course Title Operating Systems Course Code CUIT 109 Credits
... Operating Systems CUIT 109 Lecture hrs: 36 Practical hrs: 8 Tutorial hrs: 4 Individual Study hrs: 59 Assessment: 13 Notional Hours: 120 Credits 12 The course’s focus is on how an Operating System manages system resources e.g. memory, CPU files etc, while avoiding possible deadlocks and / or starvati ...
... Operating Systems CUIT 109 Lecture hrs: 36 Practical hrs: 8 Tutorial hrs: 4 Individual Study hrs: 59 Assessment: 13 Notional Hours: 120 Credits 12 The course’s focus is on how an Operating System manages system resources e.g. memory, CPU files etc, while avoiding possible deadlocks and / or starvati ...
Document
... -Ctrl-q – it continues displaying on the screen (stopped with Ctrl-s) -Ctrl-c – it stops the current activity and it is used to stop processes and displays on the screen. -Ctrl-d – means the end of file or exit, used to get out of some Unix utilities, exit from a terminal window or for logout. -Ctrl ...
... -Ctrl-q – it continues displaying on the screen (stopped with Ctrl-s) -Ctrl-c – it stops the current activity and it is used to stop processes and displays on the screen. -Ctrl-d – means the end of file or exit, used to get out of some Unix utilities, exit from a terminal window or for logout. -Ctrl ...
Chorus and other Microkernels
... File Managers Stream and Socket Managers Device Drivers Unix System V ...
... File Managers Stream and Socket Managers Device Drivers Unix System V ...
Operating Systems - IET-DAVV
... Devi Ahilya University, Indore, India Institute of Engineering & Technology Subject Code & Name Instructions Hours per Week L T P 4EI356 Operating System ...
... Devi Ahilya University, Indore, India Institute of Engineering & Technology Subject Code & Name Instructions Hours per Week L T P 4EI356 Operating System ...
Judul - Binus Repository
... – The OS that runs on Apple Macintosh computers – Pioneered the easy-to-use GUI – Proprietary OS • System 9 is OS from 1999, but still popular • Mac OS X is based on BSD Unix kernel • Tiger is 2005 release of Mac OS X; features include – Spotlight – a desktop search engine for locating files on loca ...
... – The OS that runs on Apple Macintosh computers – Pioneered the easy-to-use GUI – Proprietary OS • System 9 is OS from 1999, but still popular • Mac OS X is based on BSD Unix kernel • Tiger is 2005 release of Mac OS X; features include – Spotlight – a desktop search engine for locating files on loca ...
General overview of the System
... • Several reasons for popularity and success of the UNIX system : 1. System is written in a high-level language - easy to read, understand, change, move to other machine. 2. It has a simple user interface. 3. It provides many primitives that permit complex programs to be built from simpler programs ...
... • Several reasons for popularity and success of the UNIX system : 1. System is written in a high-level language - easy to read, understand, change, move to other machine. 2. It has a simple user interface. 3. It provides many primitives that permit complex programs to be built from simpler programs ...
evolution of operating systems
... Distributed operating systems 1980’s ¾ Arose from networking technology advances ¾ Used resources from many computers and gave the illusion of one to multiple users ¾ Parts of a program run simultaneously on two or more computers ...
... Distributed operating systems 1980’s ¾ Arose from networking technology advances ¾ Used resources from many computers and gave the illusion of one to multiple users ¾ Parts of a program run simultaneously on two or more computers ...
Lesson 8
... System V release 4 (SVR4) – combined elements of System V release 3, BSD, SunOS, and Xenix to provide a common environment Solaris – a version for Sun, 2.3 was POSIX compliant. Linux – PC version by Linus Torvalds in 1991. IRIX – a proprietary version used by Silicon Graphics HP-UX – variant develop ...
... System V release 4 (SVR4) – combined elements of System V release 3, BSD, SunOS, and Xenix to provide a common environment Solaris – a version for Sun, 2.3 was POSIX compliant. Linux – PC version by Linus Torvalds in 1991. IRIX – a proprietary version used by Silicon Graphics HP-UX – variant develop ...
Introduction to Object Technology
... Characterized by a single sequential thread of execution, a current state, and an associated set of system ...
... Characterized by a single sequential thread of execution, a current state, and an associated set of system ...
Unix/Linux: History and Philosophy
... – Rewritten to run on a PDP-11 machine in 1970 – In 1973, Dennis Ritchie and Thompson rewrote the kernel in C, creating the first portable operating system • Linux – Created by Linux Torvalds to learn operating systems – Uses many applications developed by the Gnu project, hence the name Gnu/Linux ...
... – Rewritten to run on a PDP-11 machine in 1970 – In 1973, Dennis Ritchie and Thompson rewrote the kernel in C, creating the first portable operating system • Linux – Created by Linux Torvalds to learn operating systems – Uses many applications developed by the Gnu project, hence the name Gnu/Linux ...
Chapter 3 PowerPoint
... Many UNIX computers used for servers still have a command-line interface. Windows also has a command prompt. ...
... Many UNIX computers used for servers still have a command-line interface. Windows also has a command prompt. ...
Mod1: Chapter 1 (and a little extra)
... The obvious: multiuser and multitasking Portable. Written primarily in C language.It can be changed up slightly to work on different hardware (which is why we have so many versions from the different companies) ...
... The obvious: multiuser and multitasking Portable. Written primarily in C language.It can be changed up slightly to work on different hardware (which is why we have so many versions from the different companies) ...
unix intro
... • Command and arguments must be separated by whitespace. • Generally possible to combine multiple options into a single one ...
... • Command and arguments must be separated by whitespace. • Generally possible to combine multiple options into a single one ...
UNIX Operating System Names
... The Linux kernel is a monolithic Unix-like computer operating system kernel. The Linux operating system is based on it and deployed on both traditional computer systems such as personal computers and servers, usually in the form of Linux distributions, and on various embedded devices such as routers ...
... The Linux kernel is a monolithic Unix-like computer operating system kernel. The Linux operating system is based on it and deployed on both traditional computer systems such as personal computers and servers, usually in the form of Linux distributions, and on various embedded devices such as routers ...
Introduction
... LINUX is a free UNIX-type operating system originally created by Linus Torlvads with the assistance of developers around the world. The source code for Linux is freely available to everyone. The commands of linux are similar to unix. ...
... LINUX is a free UNIX-type operating system originally created by Linus Torlvads with the assistance of developers around the world. The source code for Linux is freely available to everyone. The commands of linux are similar to unix. ...
ppt
... Not a lot of these got sold but they were very popular with those who bought Last one was put out of commission in 2000 ...
... Not a lot of these got sold but they were very popular with those who bought Last one was put out of commission in 2000 ...
Example Sheet for Operating Systems I (Part IA)
... (b) A Unix system administrator decides to make a ‘versioned’ file-system in which there are a number of directories called /root-dd-mm-yyyy, each of which holds a copy of the file-system on day dd, month mm and year yyyy. The idea is that at any particular time only the most recent snapshot will be ...
... (b) A Unix system administrator decides to make a ‘versioned’ file-system in which there are a number of directories called /root-dd-mm-yyyy, each of which holds a copy of the file-system on day dd, month mm and year yyyy. The idea is that at any particular time only the most recent snapshot will be ...
Advanced Operating Systems (CS 202) OS Evolution
... However, this is a new and important advance: portable operating systems! ...
... However, this is a new and important advance: portable operating systems! ...
Lecture1
... • OS provides VALUABLE services to user programs • OS COORDINATES the execution of user programs • OS PROVIDES resources to user programs The notion of Process is very important when we ...
... • OS provides VALUABLE services to user programs • OS COORDINATES the execution of user programs • OS PROVIDES resources to user programs The notion of Process is very important when we ...
lecture1
... This macro should be called with a list of signal specifications, specs. Each element of specs should be a list of two elements: the first should be the Unix signal for which a handler should be established, the second should be a function to be called when the signal is received One or more signal ...
... This macro should be called with a list of signal specifications, specs. Each element of specs should be a list of two elements: the first should be the Unix signal for which a handler should be established, the second should be a function to be called when the signal is received One or more signal ...
1. Operating system
... • Hides details of the physical organisation the physical disk structure (tracks, cylinders, sectors) users unaware of where files are stored, e.g. local disks or remote network server • Provides users with a logical interface e.g. named files stored in a tree structure of directories (folder ...
... • Hides details of the physical organisation the physical disk structure (tracks, cylinders, sectors) users unaware of where files are stored, e.g. local disks or remote network server • Provides users with a logical interface e.g. named files stored in a tree structure of directories (folder ...
Ceng 334 - Operating Systems
... • Memory management • Input/output in • The unix file system • Security Note: This case study covers only UNIX. Please read chapter 10 of the text book for LINUX. ...
... • Memory management • Input/output in • The unix file system • Security Note: This case study covers only UNIX. Please read chapter 10 of the text book for LINUX. ...
Unix
Unix (all-caps UNIX for the trademark) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.Initially intended for use inside the Bell System, AT&T licensed Unix to outside parties from the late 1970s, leading to a variety of both academic and commercial variants of Unix from vendors such as the University of California, Berkeley (BSD), Microsoft (Xenix), IBM (AIX) and Sun Microsystems (Solaris). AT&T finally sold its rights in Unix to Novell in the early 1990s, which then sold its Unix business to the Santa Cruz Operation (SCO) in 1995, but the UNIX trademark passed to the industry standards consortium The Open Group, which allows the use of the mark for certified operating systems compliant with the Single UNIX Specification (SUS). Among these is Apple's OS X, which is the Unix version with the largest installed base as of 2014.From the power user's or programmer's perspective, Unix systems are characterized by a modular design that is sometimes called the ""Unix philosophy"", meaning that the operating system provides a set of simple tools that each perform a limited, well-defined function, with a unified filesystem as the main means of communication and a shell scripting and command language to combine the tools to perform complex workflows. Aside from the modular design, Unix also distinguishes itself from its predecessors as the first portable operating system: almost the entire operating system is written in the C programming language that allowed Unix to reach numerous platforms.Many clones of Unix have arisen over the years, of which Linux is the most popular, having overtaken the popularity of SUS-certified Unices on server platforms since its inception in the early 1990s.