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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... CHEM = duncan, puck, brutus # User alias specifications: named groups of users User_Alias BACKUPOPS = chavez, vargas, smith # Command alias specifications: names for command groups Cmnd_Alias MOUNT = /sbin/mount, /sbin/umount Cmnd_Alias ...
... chem CHEM = SHUTDOWN, MOUNT chavez PHYSICS = MOUNT : achilles = /sbin/swapon harvey ALL = NOPASSWD: SHUTDOWN BACKUPOPS ALL, !CHEM = BACKUP, /usr/local/bin The first entry after the comment grants root access to all commands on all hosts ...
... chem group, needs access to some files usually used by the physics group. There are several ways you can give her access: • Make copies of the files for her. If they change, however, her copies will need to be updated. And if she needs ...
... chem for chavez's home directory and all the files underneath it, use this command: # chown -R chavez:chem /home/chavez If you just want to change a file's group ownership, use the chgrp command: $ chgrp new-group files where new-group ...
... chem 84 Feb 28 21:43 gold -rw-rw-r-- 1 chavez physics 12842 Oct 24 12:04 platinum The set of letters and hyphens at the beginning of each line represents the file's mode. The 10 characters are interpreted as indicated in Table 2-4 ...
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 |