Cайт посвящённый играм под Linux

Solaris is a flavor of UNIX—that is, it is one of many members of a family of operating systems called UNIX. As a Solaris system administrator, you need to understand the history of UNIX—its origin, how it evolved, and where it is now. The most important point to remember in exploring the history of UNIX is that UNIX is not an operating system that was built by one company with a wonderful marketing department.

So, repeat: UNIX, pronounced as yoo-niks, is not the name of one operating system; it refers to a family of operating systems.

Your computer is made of hardware and software components. Some examples of the hardware components include the central processor unit (CPU), which processes the instructions coded in a software program; the physical memory, which stores the instructions and data of a currently running program; and a hard disk, which stores the programs that are not currently running. You can look at a computer as a processor. It takes some input data from the user, processes it, and produces results in terms of output data. You use some input device to feed the input data to the computer, and the computer uses some output device to display the results or the output data. Examples of input and output (I/O) devices connected to a computer include monitor, keyboard, disk, and printer.

Applications (the software programs that do something useful for users) such as the Netscape browser and Microsoft Word are examples of software components. Without applications computers would be of little use for their users. The applications (software components) need hardware components to run. For example, an application needs the CPU to process the instructions, as well as memory and a hard disk to store instructions and data. The relationship between computer applications and the computer hardware gives rise to the following three issues:

Chapter 1: UNIX Operating System: Mind the Gap Chapter 2: Installing Solaris 10 Software Chapter 3: Performing System Boot and Shutdown Chapter 4: Managing File Systems Chapter 5: Managing Disks Chapter 6: Performing User Administration Chapter 7: Performing Security Administration Chapter 8: Managing Network Printers and System Processes Chapter 9: Performing System Backups and Restores

Once you've finished working through this book, set aside some time to do a thorough review before the exam. You might want to return to the book several times and make use of all the methods it offers for reviewing the material:

Re-read all the Two-Minute Drills or have someone quiz you.

Re-read all the Inside the Exam sections or have someone quiz you. You can also use the drills and Inside the Exam sections as a way to do a quick prep before the exam. You might want to make some flash cards out of 3 × 5 index cards that have the Two-Minute Drill and Inside the Exam material on them.

We've created a set of chapter components that call your attention to important items, reinforce important points, and provide helpful exam-taking hints. Take a look at what you'll find in every chapter:

Every chapter begins with the Certification Objectives—what you will need to know in order to pass the section on the exam dealing with the chapter topic. The objective headings are based on the official exam objectives spelled out within the chapter, so you'll always know which objective you are working on!

Exam Watch

Exam Watch notes call attention to information about, and potential pitfalls in, the exam. These helpful hints are written by authors who have taken the exams and received their certification—who better to tell you what to worry about? They know what you're about to go through!

Following are the typographical conventions used in presenting the commands in this book:

A word in angle brackets < > represents a variable part of a construct. You must provide its value.

Square brackets around a construct means the construct is an option, for example, cd [dir].

A vertical bar between constructs mean the constructs are alternatives.

A word in bold is the command name.

Italics are used to emphasize special terms.

I think, therefore I am.
—René Descartes

The primary purpose of this book is to help you pass the Sun Certified System Administrator for Solaris 10 Exams CX-310-200 and CX-310-202. Since the book has a laser-sharp focus on the exam objectives, expert system administrators who want to pass the exam can use this book to ensure that they do not miss any objective. Yet, it is not an exam cram book. The chapters and the sections within each chapter are presented in a logical learning sequence: every new chapter builds upon knowledge acquired in previous chapters, and there is no hopping from topic to topic. The concepts and topics, both simple and complex, are clearly explained. This facilitates stepwise learning and prevents confusion, making this book useful also for beginners who want to get up to speed quickly to get certified, even if they are new to system administration. Furthermore, Chapter 1 bridges the gap for beginners, and experts can choose to skip it. Regardless if you are a beginner or an expert, you will find yourself returning to this book as a handy reference even after you have taken and passed the exam.