ating systems written in C, a high-level programming language, and its natural portability and low price made it a popular choice among universities. Initially, two main dialects of Unix existed: one produced by AT&T known as System V, and one developed at UC Berkeley and known as BSD. In recent years, many other dialects have been created, including the highly popular Linux operating system and the new Mac OS X (a derivative of BSD).
Linux History Design Principles Kernel Modules Process Management Scheduling Memory Management File Systems Input and Output Interprocess Communication Network Structure Security
To explore the history of the UNIX operating system from which Linux is derived and the principles which Linux is designed upon To examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication To look at memory management in Linux To explore how Linux implements file systems and manages I/O devices...
This chapter to explore the history of the UNIX operating system from which Linux is derived and the principles upon which Linux’s design is based, to examine the Linux process model and illustrate how Linux schedules processes and provides interprocess communication, to look at memory management in Linux, to explore how Linux implements file systems and manages I/O devices.
Mac OS X Server v10.5 Leopard combines Apple's legendary ease of use with a rock-solid UNIX operating system. Even nontechnical users can improve communication inside and outside their organizations, facilitate collaboration on group projects, provide secure access to confidential information, and centralize storage of backup and shared files. Leopard Server makes the benefits of a server accessible to small businesses, classrooms, and departmental workgroups--no IT department required.
First developed in 1969 by Ken Thompson and Dennis Ritchie of the Research Group at Bell Laboratories; incorporated features of other operating systems, especially MULTICS The third version was written in C, which was developed at Bell Labs specifically to support UNIX The most influential of the non-Bell Labs and non-AT&T UNIX development groups — University of California at Berkeley (Berkeley Software Distributions - BSD) 4BSD UNIX resulted from DARPA funding to develop a standard UNIX system for government use Developed for the VAX, 4.
Lecture Operating System: Chapter 10 - Unix and Linux presented History of unix, Overview of unix, Processes in unix, Memory management in unix, Input/output in unix, The unix file system, Security in unix.
Chapter 4 - Processes, now includes coverage of multitasking in mobile operating systems, support for the multiprocess model in Google’s Chrome web browser, and zombie and orphan processes in UNIX. The objectives of this chapter are to introduce the notion of a process a program in execution, which forms the basis of all computation; to describe the various features of processes, including scheduling, creation, and termination; to explore interprocess communication using shared memory and mes- sage passing.
Module 21 - The UNIX system. Although operating system concepts can be considered in purely theoretical terms, it is often useful to see how they are implemented in practice. This chapter presents an in-depth examination of the 4.3BSD operating system, a version of UNIX, as an example of the various concepts presented in this lecture. By examining a complete, real system, we can see how the various concepts discussed in this book relate both to one another and to practice.
Module 22 - The Linux system. Chapter 21 discussed the internals of the 4.3BSD operating system in detail. BSD is just one of the UNIX-like systems. Linux is another UNIX-like system that has gained popularity in recent years. In this chapter, we look at the history and development of Linux, and cover the user and programmer interfaces that Linux presents interfaces that owe a great deal to the UNIX tradition.
Written by the creator of Webmin, this book explains how to use the most popular Webmin modules to perform common administration tasks on a Linux system such as adding users, configuring Apache, setting up NFS file sharing and managing the Sendmail mail server.Each chapter covers a single server or service, and is broken down into sections that list the steps required to carry out certain tasks using Webmin.
Core support: CPU, Memory, Process.
Management , Interrupt/Exception Handling etc.
Dynamically Loadable Kernel Modules.
User Mode Access to kernel facilities.
System Calls and Signals.
Filesystem Device Nodes.
Are not accessed through a device node but instead are accessed.
through a “network interface” abstraction.
A Unix system can easily be identified by its prompts. When you first
connect to a Unix system, you should receive the login prompt, which is usually
"Login:" (Note, that the first character may or may not be capitalized.) On
some systems, this prompt may be ";Login:" or "User:" (Again, the first letter
may or may not be capitalized.) This may be preceded by a short message,
Covering all aspects of the Unix operating system and assuming no prior knowledge of Unix, this book begins with the fundamentals and works from the ground up to some of the more advanced programming techniques
The authors provide a wealth of real-world experience with the Unix operating system, delivering actual examples while showing some of the common misconceptions and errors that new users make
Every aspect of a network-storage, file transfers, backup-depends on the filesystem for structure, functionality, and integrity. Surprisingly, UNIX-the operating system of choice for mission-critical networks-has historically had little documentation on its filesystem structures. Written by Steve Pate, a sen-ior member of the VERITAS Filesystems Group, this book sheds light on the inner workings of UNIX filesystems and gives you the know-how to fine-tune your UNIX filesystems for optimal performance.
This book is about Tcl, the scripting language developed by John Ousterhout. Tcl
stands for tool command language and was originally designed as a simple scripting
language interpreter that could be embedded inside applications written in the
C language. With the addition of the Tk graphical toolkit and a host of other language
extensions supporting such features as graphics, relational databases, and
object-oriented programming, Tcl has become a popular programming language
for developing applications in its own right.
This book is a collection of recipes for the working Linux sysadmin–a set of stand-alone quick guides
and tips that you can keep on your desk for easy reference. Hardcore in-depth manuals are great when
you have the time to sit down and read through them thoroughly, but that’s not always the case when
you have a bug that you needed fixed yesterday. This book is aimed at giving you tools to fix problems
faster but also to help you set up software and systems to avoid problems showing up in the first place.
Or at least to help you catch them sooner and solve...
The knowledge structures implemented in UC, the UNLX Consultant are sufficient for UC to reply to a large range of user queries in the domain of the UNIX operating system. This paper describes how these knowledge structures are used in the natural language tasks of parsing, reference, planning, goal detection, and generation, and ~ow they are organized to enable efficient access even with the large database of an expert system.
Operating System: Chapter 10 - Case Study 1 - UNIX and LINUX presents about History of unix, Overview of unix, Processes in unix, Memory management in unix, Input/output in unix, The unix file system, Security in unix.
In this chapter, we look at the history and development of Linux, and cover the user and programmer interfaces that Linux presents interfaces that owe a great deal to the UNIX tradition. We also discuss the internal methods by which Linux implements these interfaces. However, since Linux has been designed to run as many standard UNIX applications as possible, it has much in common with existing UNIX implementations. We do not duplicate the basic description of UNIX given in the previous chapter.