Unix/linux Shell Scripting

Unix/linux Shell Scripting

Module 0: Getting Started
| The Need for a Shell
Running Shell Scripts
Debugging Shell Scripts
Available Shells
About Csh
About Bash
About Kornshell
About Zsh
About Tcsh
Choosing the Right Shell
Obtaining Help with Man Pages


| Module 1: Text Editing
| Linux Text Editors
The Pico Editor
The Nedit Editor
The Emacs Text Editor
The Vi Text Editor Family


| Module 2: The Vi Editor
| What Is Vi
Review of Vi Commands
Vi Buffering
Command Mode and Insert Mode
Moving the Cursor Around
Inserting Text
Deleting a Character Or Line
Undo Last Command
Opening a New Line
Save Your Work Or Abort the Session


| Module 3: More Editing with Vi �If Time Permits
| Scrolling the Buffer
The Join Command
The File Command - :f
Edit File Command - :e
Cut and Paste Between Files
Read File Command - :r
Set Options Command
Set Options Command - .exrc File
Cursor Motion Commands - W,w,b,b,e,e
Cursor Motion Commands - $,^,0,g
Cursor Motion Commands - F,t,f,t
Delete Operator - D
Change Operator - C
Yank Operator - Y
Put Commands - P,p
Searching for a Pattern - /,n,n


| Module 4: Using the Shell
| The Command Line
Standard Input, Standard Output and Error
Using Default Standard In and Output
I/o Redirection
I/o Redirection - Examples
I/o Redirection - Warning
Appending Output of a File
Pipes
The Tee Utility


| Module 5: Filename Generation
| Filename Generation
The ? Special Character
The * Special Character
The [ ] Special Characters
The ! Special Character


| Module 6: Processes
| What Is a Process
Process Structure
The Ps Utility
Options To the Ps Utility
Background Commands
Killing Background Processes
Redirecting the Standard Error


| Module 7: Shell Programming Concepts
| What Is a Shell
Which Shell
What Is a Shell Script
Why Use Shell Scripts


| Module 8: Flow Control
| The Exit Status of Commands
Command Line Examples
The Test Command
The If-then-else Construct
The Elif Construct
A Loop Example


| Module 9: Variables
| User Created Variables
The Read Command
The Shell Environment
The Export Command
Subshells
Command Substitution
Quoting Mechanisms
Assigning Variables Summary


| Module 10: Special Variables
| Command-line Arguments
- Number of Arguments
The Shift Command
- All Arguments
- Pid of Shell


| Module 11: More Flow Control
| The for Loop
The While Loop
The Case Construct


| Module 12: Common Unix Filters
| Editing the Output of Commands with the Stream Editor Sed
Translating Characters with Tr
Sorting Files and Command Output
Comparing Different Versions of Files
Using Other Common Filters: Cut, Uniq & Tee
Combining Filters for Complex Text Processing
Executing Filter Commands with Find


| Module 13: Restructuring Data with Awk
| Testing and Extracting Fields From Structured Input
Searching Files with Multiline Records
Performing Arithmetic Calculations
Writing Useful Awk One-liners
Matching Patterns with Extended Regular Expressions
Modifying Awk’s Default Behavior with Special Patterns and Built-in Variables
Calling Awk Built-in Functions
Using Awk’s Control Constructs for Testing and Looping
Storing Data in Arrays
Formatting Output Using Printf

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