• System Administrator Responsibilities
• A Brief History of UNIX
• Evolving Standards
• Navigating the Documentation

User Administration

• What is a “user” in UNIX?
• The /etc/passwd File
• Groups
• The /etc/group File
• Passwords
• Adding Users
• Deleting Users
• Modifying User Attributes
• The Login Process
• /etc/profile and .profile
• Communicating with Users: /etc/motd
• Communicating with Users: The wall Command

File System Basics

• The Hierarchy
• Files
• Directories
• Device Files
• Character and Block Devices
• The/dev Directory
• Links
• Symbolic Links
• A File System Tour
• The df Command
• The du Command
• The find Command

Advanced File System Concepts in Unix Online Training

• The Physical File System
• The Inode File
• File Storage in Disk Blocks
• The Superblock
• The Free List
• Slices and File Systems
• File System Types

Disk Management

• Making a File System
• The mkfs Command
• Sharing Filesystems
• The mount Command
• The fstab File
• The fsck Command
• The lost+found Directory
• The prtvtoc Command

Backups

• Backup Strategies
• Backup Tools
• The tar Command
• The cpio Command
• The dump Command
• Network Backup Strategies

UNIX Processes in Unix Online Training

• Overview of Processes
• Process Space
• Process Table
• The fork/exec Mechanism
• The ps Command
• Background Processes
• The kill Command
• Scheduling Jobs
• The cron Daemon
• The at Command
• The crontab Command
• Format of cron Files
• Access to Scheduling Facilities

System Startup and Shutdown

• Run States
• The init Daemon
• /etc/inittab
• The inittab Actions
• The init Command
• The rc Scripts
• Single-User Mode
• The shutdown Command

UNIX System Security

• Security Overview
• Physical Security
• Account Security
• SUID and SGID Settings
• File and Directory Permissions
• Software Security

Performance Monitoring and Tuning

• Performance Issues
• Methods of Improving Performance
• Swapping and Paging
• The sar Utility
• Using sar
• The truss Command

IP Addressing

• Basic Network Needs
• Ethernet Addresses
• IP Addresses
• DNS vs /etc/hosts to Resolve IP Addresses
• Network Addresses
• Network Classes
• Broadcast Addresses
• Subnet Masks

Configuring TCP/IP

• The /etc/hosts File
• The ifconfig Command
• The /etc/services File
• The inetd Daemon
• The /etc/inetd.conf File
• Simple TCP/IP Troubleshooting
• The ping and netstat Commands

The LP Print Service

• Printing Overview
• The lp, lpstat, and cancel Commands
• Adding a Printer
• The lpadmin Command
• The accept and reject Commands
• The enable and disable Commands
• Adding a Networked Printer
• Other Administrative Commands

Network Utilities

• Network Services
• telnet – Terminal Emulator
• ftp – File Transfer
• rcp – Remote Copy
• rlogin – Remote Login
• rsh – Remote Commands

Kernel Reconfiguration

• Overview of Reconfiguration
• Kernel Parameters
• Steps to Reconfigure a Kernel
• Specific Steps for SVR4

Overview of NIS

• What is NIS?
• Why Use NIS?
• NIS Design and Implementation
• NIS Maps
• Configuring NIS

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