Linux Shell Scripting Eğitimi

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
• Redirection – 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 Edit – using Arrow Keys
• Command Line Edit – using vi
• Customising the Shell
• The Home Directory – HOME
• The Working Directory – pwd
• Changing Directories – cd
• Make Directory – mkdir
• Remove 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

• 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
• Tidying The Output
• Suppressing Input – stty

Special Characters and Variables

• Quotation Marks
• Quoted Strings – “, ‘
• Escape Character – *
• Quoted Strings – `
• Using $(…)
• System Variables – set
• Other Special Variables
• User Variables
• User Variables – unset
• Variables in Scripts
• Typeset Command
• Integer Variables
• Special Constructs

Creating Menus

• Conditions – case
• Creating a Menu
• 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
• Highlighting Text- tput
• Positioning the Cursor – backtab \b
• Korn Shell Menu

Selection

• 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
• Avoiding Null Input
• Testing Numbers
• More on case
• Displaying Variables
• Placing Spaces
• Testing Commands

Iteration, Looping

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

Sub-scripts and Functions

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

Advanced Commands

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

Advanced Edit – vi & sed

• vi – Mapping Key Combinations
• Mapping Control Keys
• Using Abbreviations
• Editing Many Files
• Regular Expressions
• Global Insert
• Here document,
• 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
• sed Example

Text File Processing – awk

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