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Preface 

1. Introduction to System Administration

      Thinking About System Administration 

      Becoming Superuser 

      Communicating with Users 

      About Menus and GUIs 

      Where Does the Time Go? 

2. The Unix Way

      Files 

      Processes 

      Devices 

3. Essential Administrative Tools and Techniques

      Getting the Most from Common Commands 

      Essential Administrative Techniques 

4. Startup and Shutdown

      About the Unix Boot Process 

      Initialization Files and Boot Scripts 

      Shutting Down a Unix System 

      Troubleshooting: Handling Crashes and Boot Failures 

5. TCP/IP Networking

      Understanding TCP/IP Networking 

      Adding a New Network Host 

      Network Testing and Troubleshooting 

6. Managing Users and Groups

      Unix Users and Groups 

      Managing User Accounts 

      Administrative Tools for Managing User Accounts 

      Administering User Passwords 

      User Authentication with PAM 

      LDAP: Using a Directory Service for User Authentication 

7. Security

      Prelude: What's Wrong with This Picture? 

      Thinking About Security 

      User Authentication Revisited 

      Protecting Files and the Filesystem 

      Role-Based Access Control 

      Network Security 

      Hardening Unix Systems 

      Detecting Problems 

8. Managing Network Services

      Managing DNS Servers 

      Routing Daemons 

      Configuring a DHCP Server 

      Time Synchronization with NTP 

      Managing Network Daemons under AIX 

      Monitoring the Network 

9. Electronic Mail

      About Electronic Mail 

      Configuring User Mail Programs 

      Configuring Access Agents 

      Configuring the Transport Agent 

      Retrieving Mail Messages 

      Mail Filtering with procmail 

      A Few Final Tools 

10. Filesystems and Disks

      Filesystem Types 

      Managing Filesystems 

      From Disks to Filesystems 

      Sharing Filesystems 

11. Backup and Restore

      Planning for Disasters and Everyday Needs 

      Backup Media 

      Backing Up Files and Filesystems 

      Restoring Files from Backups 

      Making Table of Contents Files 

      Network Backup Systems 

      Backing Up and Restoring the System Filesystems 

12. Serial Lines and Devices

      About Serial Lines 

      Specifying Terminal Characteristics 

      Adding a New Serial Device 

      Troubleshooting Terminal Problems 

      Controlling Access to Serial Lines 

      HP-UX and Tru64 Terminal Line Attributes 

      The HylaFAX Fax Service 

      USB Devices 

13. Printers and the Spooling Subsystem

      The BSD Spooling Facility 

      System V Printing 

      The AIX Spooling Facility 

      Troubleshooting Printers 

      Sharing Printers with Windows Systems 

      LPRng 

      CUPS 

      Font Management Under X 

14. Automating Administrative Tasks

      Creating Effective Shell Scripts 

      Perl: An Alternate Administrative Language 

      Expect: Automating Interactive Programs 

      When Only C Will Do 

      Automating Complex Configuration Tasks with Cfengine 

      Stem: Simplified Creation of Client-Server Applications 

      Adding Local man Pages 

15. Managing System Resources

      Thinking About System Performance 

      Monitoring and Controlling Processes 

      Managing CPU Resources 

      Managing Memory 

      Disk I/O Performance Issues 

      Monitoring and Managing Disk Space Usage 

      Network Performance 

16. Configuring and Building Kernels

      FreeBSD and Tru64 

      HP-UX 

      Linux 

      Solaris 

      AIX System Parameters 

17. Accounting

      Standard Accounting Files 

      BSD-Style Accounting: FreeBSD, Linux, and AIX 

      System V-Style Accounting: AIX, HP-UX, and Solaris 

      Printing Accounting 

Afterword: The Profession of System Administration 

      SAGE: The System Administrators Guild 

      Administrative Virtues 

Appendix: Administrative Shell Programming 

Index