The Essence of UNIX and Linux
... client workstations, client/server workstations, or stand-alone workstations • Concept of OS layered components originated with UNIX • In UNIX/Linux, you communicate with OS programs ...
... client workstations, client/server workstations, or stand-alone workstations • Concept of OS layered components originated with UNIX • In UNIX/Linux, you communicate with OS programs ...
Ceng 334 - Operating Systems
... • This is done by locks • A lock is defined by a file name, the starting byte and the number of bytes • When placing a lock, the process specifies to – Block: when the existing block is removed, the process is unblocked and the lock is placed – Not to block: the system call returns with a status cod ...
... • This is done by locks • A lock is defined by a file name, the starting byte and the number of bytes • When placing a lock, the process specifies to – Block: when the existing block is removed, the process is unblocked and the lock is placed – Not to block: the system call returns with a status cod ...
unix intro
... POSIX and the Single Unix Specification • At the time that Ritchie invented C no standards existed. • First AT&T created the System V Interface Definition (SVID). • Then other organizations such as the X/Open group created a standard – Soon people were concerned about the fragmentation of Unix stan ...
... POSIX and the Single Unix Specification • At the time that Ritchie invented C no standards existed. • First AT&T created the System V Interface Definition (SVID). • Then other organizations such as the X/Open group created a standard – Soon people were concerned about the fragmentation of Unix stan ...
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. ...
Lecture1
... During past 25 years UNIX OS has evolved into a powerful, flexible and versatile OS. It works on Multi-Platform • PC’s, Micro-computers etc. ...
... During past 25 years UNIX OS has evolved into a powerful, flexible and versatile OS. It works on Multi-Platform • PC’s, Micro-computers etc. ...
lecture1
... Program consists of the tools and applications that offer additional functionality to the operating system. Typically, tools are grouped into categories for certain functions, such as word processing, business applications, or programming. 2.0 HISTORY The history of UNIX starts back in 1969, when a ...
... Program consists of the tools and applications that offer additional functionality to the operating system. Typically, tools are grouped into categories for certain functions, such as word processing, business applications, or programming. 2.0 HISTORY The history of UNIX starts back in 1969, when a ...
intro - Virginia Tech
... Huge number of free and well-written software programs Open-source OS Internet servers and services run on UNIX Largely hardware-independent Based on standards ...
... Huge number of free and well-written software programs Open-source OS Internet servers and services run on UNIX Largely hardware-independent Based on standards ...
Mod1: Chapter 1 (and a little extra)
... Portable Operating System – Runs on many different machines (from desktop PCs to high end mainframes/servers) ...
... Portable Operating System – Runs on many different machines (from desktop PCs to high end mainframes/servers) ...
introduction to unix system
... • Unix was founded on what could be called a "small is good" philosophy. The idea is that each program is designed to do one job well. Because Unix was developed by different people with different needs it has grown to an operating system that is both flexible and easy to adapt for specific needs. • ...
... • Unix was founded on what could be called a "small is good" philosophy. The idea is that each program is designed to do one job well. Because Unix was developed by different people with different needs it has grown to an operating system that is both flexible and easy to adapt for specific needs. • ...
Ceng 334 - Operating Systems
... Creating a socket returns a file descriptor, which is needed for establishing a connection, reading data, writing data, and releasing the connection One party makes a listen call on a local socket, which creates a buffer and blocks until data arrive The other party makes a connect call giving as par ...
... Creating a socket returns a file descriptor, which is needed for establishing a connection, reading data, writing data, and releasing the connection One party makes a listen call on a local socket, which creates a buffer and blocks until data arrive The other party makes a connect call giving as par ...
Introduction to UNIX/Linux - gozips.uakron.edu
... There are several versions of UNIX running on Sun, HP, IBM, etc that are slightly different: ...
... There are several versions of UNIX running on Sun, HP, IBM, etc that are slightly different: ...
ppt
... programs is the same - only different in the details • “Cross-compilation” is defined as the compilation of a program on one computer (Sun development host) for execution on another computer (SAPC target machine) – We used gcc to generate an executable file that will run on the Sun-based UNIX system ...
... programs is the same - only different in the details • “Cross-compilation” is defined as the compilation of a program on one computer (Sun development host) for execution on another computer (SAPC target machine) – We used gcc to generate an executable file that will run on the Sun-based UNIX system ...
$doc.title
... ages when all computers were shared), interactive (as opposed to “batch”), and multi-tasking (sharing again). ...
... ages when all computers were shared), interactive (as opposed to “batch”), and multi-tasking (sharing again). ...
Document
... means for users to communicate with each other • This functionality is provided by Usenet, which enables users to post messages in forums called newsgroups and enables other users to read and reply to those messages • Newsgroups forums are grouped according to topic • Posting to a newsgroup is often ...
... means for users to communicate with each other • This functionality is provided by Usenet, which enables users to post messages in forums called newsgroups and enables other users to read and reply to those messages • Newsgroups forums are grouped according to topic • Posting to a newsgroup is often ...
Chapter One
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
Chapter One
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
... Use the date, cal, who, man, whatis, and clear commands Perform basic command-line editing operations Enter multiple commands on a single command line ...
UNIX/Linux Environment
... – Not written from traditional UNIX code • Linux is original code – Includes POSIX standards • Other Linux information – Created by Linus Torvalds – Offers all the complexity of UNIX – Linux can coexist with other OSs ...
... – Not written from traditional UNIX code • Linux is original code – Includes POSIX standards • Other Linux information – Created by Linus Torvalds – Offers all the complexity of UNIX – Linux can coexist with other OSs ...
Comp111 Slides
... UNIX is an Operating System (OS). An operating system is a control program that helps the user communicate with the computer hardware. The most popular operating systems: Windows -- from Microsoft. (Windows is the “Big Mac” of operating systems -- cheap and “billions served”.) UNIX was developed lon ...
... UNIX is an Operating System (OS). An operating system is a control program that helps the user communicate with the computer hardware. The most popular operating systems: Windows -- from Microsoft. (Windows is the “Big Mac” of operating systems -- cheap and “billions served”.) UNIX was developed lon ...
UNIX-like Operating Systems
... user had sole use of the machine, program was loaded into the machine and the machine set to work, task is responsible for everything, task totaly determines behavior of computer. machines came with libraries of support code which were linked to the user’s program to assist in operations such as inp ...
... user had sole use of the machine, program was loaded into the machine and the machine set to work, task is responsible for everything, task totaly determines behavior of computer. machines came with libraries of support code which were linked to the user’s program to assist in operations such as inp ...
Introduction - Virginia Tech
... Why Unix? Used in many scientific and industrial settings Open-source operating system (OS) Huge number of free and well-written software programs Excellent programming environment Internet servers and services run on Unix ...
... Why Unix? Used in many scientific and industrial settings Open-source operating system (OS) Huge number of free and well-written software programs Excellent programming environment Internet servers and services run on Unix ...
UNIX Software Tools
... an email system) the software on the local host is the client and the software on the remote host is the server. In a X-Windows system this is reversed. The X-Windows server is on your local machine. It provides the following services: keyboard input, mouse, procedures for drawing on the screen, ...
... an email system) the software on the local host is the client and the software on the remote host is the server. In a X-Windows system this is reversed. The X-Windows server is on your local machine. It provides the following services: keyboard input, mouse, procedures for drawing on the screen, ...
Fall 2008 Term - Computer Science
... 3. UNIX runs on virtually every computer ever made (including handheld computers, cell phones, watches, and Ipods). Although there are variations (different versions) of Unix, each provides fundamentally the same set of commands and tools. 4. Many variations of UNIX are open source. Thus, you can ob ...
... 3. UNIX runs on virtually every computer ever made (including handheld computers, cell phones, watches, and Ipods). Although there are variations (different versions) of Unix, each provides fundamentally the same set of commands and tools. 4. Many variations of UNIX are open source. Thus, you can ob ...
Presentation4
... • SCO Unix for PC became a lucrative business market • operating system provided security on a PC where DOS couldn’t… ...
... • SCO Unix for PC became a lucrative business market • operating system provided security on a PC where DOS couldn’t… ...
History of Unix
The history of Unix dates back to the mid-1960s when the Massachusetts Institute of Technology, AT&T Bell Labs, and General Electric were jointly developing an experimental time sharing operating system called Multics for the GE-645 mainframe.Multics introduced many innovations, but had many problems.Bell Labs, frustrated by the size and complexity of Multics but not the aims, slowly pulled out of the project. Their last researchers to leave Multics, Ken Thompson, Dennis Ritchie, Doug McIlroy, and Joe Ossanna, decided to redo the work on a much smaller scale. In 1979, Dennis Ritchie described their vision for Unix:What we wanted to preserve was not just a good environment in which to do programming, but a system around which a fellowship could form. We knew from experience that the essence of communal computing, as supplied by remote-access, time-shared machines, is not just to type programs into a terminal instead of a keypunch, but to encourage close communication.