UNIX/Linux Shell Scripting Training Course

Introduction

• Objectives
• Course Schedule
• Course Introductions
• Pre-requisites
• Bibliography
• Delegate Responsibilities
• Course Summary

Review of Basics - Optional

• Files
• Directories and Processes
• Displaying Directories - ls
• Getting Help - man
• Displaying Files - cat, more
• Simple Commands
• Piping - using | symbol
• Redirection - using > symbol
• Appending Output - using >> symbol
• Redirecting Input - using < symbol
• Redirecting Errors
• Using /dev/null
• Foreground Jobs
• Background Jobs - &
• Stopping Jobs - kill
• Special Files - . and ..
• The Command Prompt - PS1
• Creating Aliases
• Using Aliases
• Command History
• Command Line Editing - using Arrow Keys
• Command Line Editing - using vi
• Customizing the Shell for government
• The Home Directory - HOME
• The Working Directory - pwd
• Changing Directories - cd
• Creating a Directory - mkdir
• Removing a Directory - rmdir
• Interactive Copy - cp -i
• Interactive Move - mv -i
• Interactive Remove - rm -i
• Removing Directories - rm -r
• Wild Cards - File Name Generation
• Word Count - wc
• Finding Files - find
• Finding Text in Files - grep, sort, cut, uniq, tr
• Changing Permissions - chmod

Shell Programming for government

• Creating Shell Scripts
• Testing the Command
• Creating the Script File
• Adding Execute Permissions
• Testing the Script
• Running the Script - time
• Running the Script - dot
• Running the Script - exec
• Running the Script - ksh
• Debugging the Script
• Passing Parameters
• The read Command
• Using read in Scripts
• Choosing the Shell for government
• Tidying the Output
• Suppressing Input - stty

Special Characters and Variables for government

• Quotation Marks
• Quoted Strings - ", '
• Escape Character - *
• Quoted Strings - `
• Using $(...)
• System Variables - set
• Other Special Variables for government
• User Variables
• Unsetting User Variables - unset
• Variables in Scripts
• The Typeset Command
• Integer Variables
• Special Constructs

Creating Menus for government

• Conditions - case
• Creating a Menu for government
• Iteration - while, until
• Holding the Output - sleep
• Holding the Output - dummy read
• Ending the Script
• Ending the Loop
• Hidden Option - forking a shell
• Trapping Interrupts - trap
• More on Interrupts for government
• Highlighting Text - tput
• Positioning the Cursor - backtab \b
• Korn Shell Menu

Selection for government

• Conditional Testing
• Testing File Attributes
• Testing File Permissions
• Multiple Tests - Nested ifs
• Multiple Tests - elseif
• The NOT Condition
• Multiple Conditions in One Test
• Testing Strings
• Using Square Brackets for government
• Avoiding Null Input
• Testing Numbers
• More on case for government
• Displaying Variables
• Placing Spaces
• Testing Commands for government

Iteration, Looping for government

• Computations - let
• Iteration - while, until
• Infinite Loop
• Iteration - for
• More than 9 Parameters - shift

Sub-scripts and Functions for government

• Local and Global Variables
• Sub-scripts for government
• The Export Command
• Exit Status
• Aliases for government
• Functions
• Useful Functions for government
• Return Status
• Manipulating Functions
• Functions in Scripts for government

Advanced Commands for government

• Debugging - set
• Setting - set for government
• Merging Files - join
• Merging Files - paste, basename and dirname
• Job Control - jobs
• Regular Expressions for government
• Global Regular Expression Printer - grep
• Extended Regular Expression grep - egrep
• Fast Regular Expression Search - fgrep
• Computations - expr
• Advanced Computations – bc, eval Command
• Argument Processing for government
• The getopts Command
• Using Arrays for government

Advanced Edit – vi & sed for government

• vi - Mapping Key Combinations
• Mapping Control Keys for government
• Using Abbreviations for government
• Editing Multiple Files
• Regular Expressions for government
• Global Insert for government
• Here Document for government
• Batch Stream Editor - sed, sed delete, -d, sed print, -p, sed suppress, -n, sed quit, -q, sed file, -f, sed Multiple Input, sed
• Find and Replace for government
• sed Example for government

Text File Processing - awk for government

• The awk Programming Tool for government
• Pattern Matching for government
• Regular Expressions for government
• Comparison Patterns for government
• Compound Patterns for government
• Range Patterns for government
• Special Patterns for government
• Built-in Functions for government
• Troubleshooting awk Scripts for government
• Passing Parameters to awk for government
• Using Contains in awk for government
• The printf Function in awk for government
• Computations in awk for government
• Functions in awk for government
• The substr Function in awk for government
• The length Function in awk for government
• Action Statements in awk for government
• Control Flow Statements in awk for government
• Arrays in awk for government
• Using Arrays with for Loops in awk for government
• awk Examples for government