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SAMS Teach Yourself Unix in 10 Minutes
SAMS Teach Yourself Unix in 10 Minutes
By Robert Shimonski
.
Publisher: Sams Publishing
Pub Date: June 15, 2005
ISBN: 0-672-32764-3
Pages: 256
Table of Contents | Index
If you’re in need of a quick, concise tutorial to learn Unix and get on your way, this is it. Sams Teach Yourself UNIX in 10 Minutes, Second Edition will help you quickly and easily learn UNIX essentials and review UNIX features and functions. You will master components of UNIX programming through clear, concise learning modules and step-by-step instructions without having to wade through a lot of fluff and theory. You will learn to:
Get onto the system and use the command line
Move about the file system
Create, move, rename and delete files and directories
Slice and dice command pipe data
Use the vi Editor
Print in the UNIX environment
Whatever your expertise level, Sams Teach Yourself UNIX in 10 Minutes will get you up and running with UNIX in no time.
Освой самостоятельно Unix. 10 минут на урок
Sams Teach Yourself Unix in 10 Minutes Robert Shimonski
Эта книга представляет собой краткий курс из 10-минутных уроков для изучения основ системы Unix безотносительно к ее конкретной версии. Помимо основного материала уроков и развернутого пояснения новых терминов, в книге содержится немало полезных советов и практических приемов, позволяющих избежать типичных ошибок при входе в систему и выходе из нее, использовании графической среды X Window System и KDE, перемещении по файловой системе, поиске справки, выборе командного процессора, написании сценариев командного процессора, установке прав доступа к файлам и каталогам, удаленном доступе к сетевым ресурсам, редактировании файлов, печати документов, архивировании данных и настройке рабочей среды. Книга позволяет начать изучение Unix практически с нуля и по завершении курса получить базовые знания для работы и дальнейшего освоения этой сложной, но весьма эффективной операционной системы. Книга адресована тем, кто делает лишь первые шаги в освоении Unix.
формат 84×108/32; серия Освой самостоятельно… ; 2006, 1 кв.; Вильямс.
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Введение 13 Урок 1. Итак, приступаем 21 Урок 2. Получение справки 39 Урок 3. Графическое сопряжение с Unix 53 Урок 4. Особенности файловой системы 71 Урок 5. Методы перемещения по файловой системе 89 Урок 6. Работа в командной строке 99 Урок 7. Чтение файлов 115 Урок 8. Правка текста 125 Урок 9. Утилиты правки текста и управления файлами 137 Урок 10. Инструментальные средства архивирования и сжатия данных 149 Урок 11. Управление процессами в Unix 163 Урок 12. Ввод и вывод 177 Урок 13. Регулярные выражения 185 Урок 14. Основы создания сценариев командного процессора 195 Урок 15. Пользовательские утилиты 205 Урок 16. Видоизменение рабочей среды 217 Урок 17. Печать в Unix 225 Урок 18. Подключение к сети и безопасность 233 Урок 19. Установка прав доступа 243 Урок 20. Привилегированные команды Unix 255 Приложение. Источники для дальнейшего изучения Unix 263 Предметный указатель 265
shutdownreboot
shutdown/reboot
There may be a time where you need to shut down your Unix system or reboot it. Although I can vouch from many years of experience that you will reboot Unix or Linux far less than Microsoft Windows, you may still need to shut down your system or reboot it. Unix boots differently than Microsoft Windows. Most Windows operating systems will boot up as a complete unit. In Unix, the kernel loads, and then anything else is loaded around it for use. Unix uses dozens of programs to form what appears to be a huge operating system, when in reality it’s all loaded separately as single programs.
Each of these programs might be in the process of modifying, moving, creating, or deleting files at any point in time and cannot be interrupted. If you simply shut off the power to a Unix machine, you interrupt all these processes, and probably destroy any files they were working on at the time. This happens often, and is another reason why it’s important that commands like this are restricted to the proper users. Haphazardly shutting off the power to a Unix machine has the potential to completely corrupt the drives, leaving the system unusable. Be careful if you use this command at work. If you are working in your lab, then have fun, and try to create problems so that you can use single-user mode and fsck to fix it.
The shutdown command and a reboot command have obvious goals. These two commands gracefully exit all running software, write out disk-cache information to the drives, and complete their respective tasks. They are restricted to the root user for obvious reasons.
SAMS Teach Yourself Unix in 10 Minutes by Robert Shimonski
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Appendix B. Unix Command Reference
Command
Result
Look up a command
Display current directory
List directory contents
Change Directory
Delete file
Copy file to new location
Move file to new location
Display entire file
Display file one page at a time
Return file statistics: number of words, lines, and characters
Encode/decode binary file to transmit through email
Move process to the foreground/background
List processes running on the system
Send end signal to a running process
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