This document provides an overview of system administration topics including user administration, file system basics, advanced file system concepts, and disk management. It discusses user and group management using files like /etc/passwd and /etc/group. It also outlines the hierarchy and components of the file system, how files and directories are organized, and commands to view and manage disk usage and the file system like df, du, find, mkfs, mount, and fsck.
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3. Overview of System Administration
System Administrator Responsibilities
A Brief History of UNIX
Evolving Standards
Navigating the Documentation
User Administration
What is a user in UNIX?
4. The /etc/passwd File
Groups
The /etc/group File
Passwords
Adding Users
Deleting Users
Modifying User Attributes
The Login Process
5. /etc/profile and .profile
Communicating with Users: /etc/motd
Communicating with Users: The wall Command
File System Basics
The Hierarchy
Files
Directories
Device Files
6. Character and Block Devices
The/dev Directory
Links
Symbolic Links
A File System Tour
The df Command
The du Command
The find Command
7. Advanced File System Concepts
The Physical File System
The Inode File
File Storage in Disk Blocks
The Superblock
The Free List
Slices and File Systems
File System Types
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8. 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
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