UNIX & Linux Essentials

Why do Users choose UNIX and Linux?
An Operating System
The UNIX and Linux Operating Systems
Components of the Operating System
Organisation of a UNIX and Linux System
The Kernel
The Filesystem
The Shell
User Interfaces
Terminal-based Interface
The Command Processor.
Utilities
Window-based Interfaces (CDE, KDE and Gnome)
Using Gnome
Distributed Environments
Networking
Logging On
Accessing the Command Line
Format of UNIX and Linux Commands
Getting help
Web based help
Super User Privileges and Setting and Changing the Password
Structure of a UNIX and Linux Filesystem
Identifying Files and Directories
Address Formats
The Home Directory
Where am I? (pwd)
Moving Around the Filesystem (cd)
Listing Directory Contents
Creating Directories
Removing Directories
Displaying Files
Displaying File Contents
Copying Files and Directories
Moving and Renaming Files & Directories
Removing Files
The Shell Environment
Using Wildcards (Metacharacters)
Default Action of the Shell
Saving Output and Using File Input (Redirection)
Bolting Commands Together (piping)
Gluing Files Together (cat)
Aliases
Source vs Binary
Distributions
Redhat Package Manager (RPM)
YUM
Debian Packages (dpkg)
APT
Package Management GUIs
Introducing the vi and vim Editors
Key Tricks
vi and vim Modes
The vi and vim Editor for Beginners
Some Further Useful features
What is a Process?
Interactive or Background?
Process Fork / exec
Process, Report Status
Process, kill a
Allocating Priority
Logging out using Nohup
Sequential Command
Network basics
ifconfig
ip command
boot time network configuration
Disk Structure
Partitions
RAID
LVM
Elements of a file System
Types of File System
Journalling
Creating a file System
Expanding a file system
The Find Utility
Sort or merge Files
sed, grep, regular expressions and wildcards
File System Permissions
Change mode
Symbolic Notation
Octal Notation
Change owner
Change group
Default Creation Mode
Backup and Restore
Tar, Zip and Unzip Utilities
Cpio Utility
Pathname considerations
Shell Environment
System Variables
Shell Variables
Assigning Variables
Displaying Variable Values
Exporting variables
Shell Interpretation
Using Quotes in the Shell
The Back Quote (Command Quote)
The Single Quote
The Double Quotes
The Backslash
Special Escape Characters
Recalling and Modifying Previous Commands
Shell Scripts
Executing Shell Scripts
Passing Arguments To A Program
Positional Parameters
Special Shell Parameters
The Read Command