Essential System Administration: Tools and Techniques for Linux and Unix AdministrationEssential System Administration,3rd Edition is the definitive guide for Unix system administration, covering all the fundamental and essential tasks required to run such divergent Unix systems as AIX, FreeBSD, HP-UX, Linux, Solaris, Tru64 and more. Essential System Administration provides a clear, concise, practical guide to the real-world issues that anyone responsible for a Unix system faces daily.The new edition of this indispensable reference has been fully updated for all the latest operating systems. Even more importantly, it has been extensively revised and expanded to consider the current system administrative topics that administrators need most. Essential System Administration,3rd Edition covers: DHCP, USB devices, the latest automation tools, SNMP and network management, LDAP, PAM, and recent security tools and techniques.Essential System Administration is comprehensive. But what has made this book the guide system administrators turn to over and over again is not just the sheer volume of valuable information it provides, but the clear, useful way the information is presented. It discusses the underlying higher-level concepts, but it also provides the details of the procedures needed to carry them out. It is not organized around the features of the Unix operating system, but around the various facets of a system administrator's job. It describes all the usual administrative tools that Unix provides, but it also shows how to use them intelligently and efficiently.Whether you use a standalone Unix system, routinely provide administrative support for a larger shared system, or just want an understanding of basic administrative functions, Essential System Administration is for you. This comprehensive and invaluable book combines the author's years of practical experience with technical expertise to help you manage Unix systems as productively and painlessly as possible. |
From inside the book
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... root is the default when no argument is provided. After you enter the su command (without arguments), the system prompts you for the root password. If you type the password correctly, you'll get the normal root account prompt (by ...
... root Solaris and FreeBSD systems when su'd to root. Generally, you'll be asked to type the old superuser password and then the new password twice. The root password should also be changed whenever someone who knows it stops using the ...
... root; otherwise, only members of the wheel group can use it. The default configuration is a wheel group consisting ofjust root. AIX allows the system administrator to specify who can use su on an account-byaccount basis (no restrictions ...
... root. su also has a mode whereby a single command can be run as root. This mode is not a very convenient way to interactively execute superuser commands, and I tend to see it as a pretty unimportant feature of su. Using su -c can be very ...
... root, so if the command lets the user execute other commands via a shell escape, any command he runs from within the utility will also be run as root, and the whole purpose of sudo—to grant selective access to superuser command—will be ...
Contents
Managing Users and Groups | |
Security | |
Backup and Restore | |
Serial Lines and Devices | |
Printers and the Spooling Subsystem | |
Automating Administrative Tasks | |
Managing System Resources | |
Configuring and Building Kernels | |
Accounting | |
The Profession of System Administration | |
Managing Network Services | |
Electronic Mail | |
Filesystems and Disks | |
Administrative Shell Programming | |
Index | |
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Common terms and phrases
References to this book
Decision Support Systems: Concepts and Resources for Managers Daniel Power No preview available - 2002 |