UNIX Shell Scripting Online Training in India

UNIX Shell Scripting Online Training in India

Course Content :

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 – elsif
    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