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Shell Programming

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Travel Packages Remote Attendance

Korn Shell and Bash Shell Programming

Duration: 3 days

Price: $1595

Remote Attendance: Click here for more information.


Students Will Learn:

  • How to write and run shell scripts
  • Using conditional constructs to control script execution
  • Manipulating strings
  • Command-line processing
  • Using regular expressions
  • String processing utilities: sed,grep and awk
  • Counting words, lines and characters
  • Working with compression utilities
  • Writing functions
  • Managing processes
  • Using the ksh and bash commands
  • Working with UNIX I/O streams

Course Description: This hands on Korn and Bash Shell scripting course provides a comprehensive introduction to writing Korn and Bash shell scripts. Besides covering fundamental syntax for program flow control, variable assignment and substitution, I/O control, and mathematical expressions, it emphasizes the powerful features of these shells, including built-in string operators, variable typesetting/conversion, functions, and coprocess communication and control. The creative use of standard UNIX and Linux utilities within scripts to solve problems is stressed throughout. The course is designed for the administrators and programmers who are developing, testing, or integrating software on UNIX or Linux, as well as for advanced UNIX or Linux users. Both the commonalities and differences between the Korn and Bash shells are examined, and students will have the opportunity to learn from examples coded in both shells. Comprehensive hands on exercises are integrated throughout to reinforce learning and develop real competency.

Course Prerequisites: Familiarity with UNIX file system and commands. Students who are not familiar with UNIX file system and commands should register for the course UNIX/Linux Fundamentals.

Introduction
  • Comparing Popular Shells
  • Korn Shell Compatibility for Bash
  • Korn and Bash Shell Advantages
  • Korn and Bash Shell Disadvantages
  • Versions of ksh and bash
  • Shell Command Syntax
  • Comments
  • Continuing a Command on Multiple Lines
  • Special Characters
  • Pattern Matching
  • Complex Pattern Combinations
  • Tilde Expansion
Process Management
  • Process Priority
  • Background Jobs
  • Signals
  • Traps
  • DEBUG and EXIT
  • ksh Co-Processing
  • bash Co-Processing
  • Pausing
  • Time and Date
  • Scheduling Execution
  • Run Commands Later
  • Aliases
  • How the Shell Finds Commands
  • Command History and Editing
Writing Scripts
  • Shell Programming Language
  • Reserved Words
  • How to Write and Run Scripts
  • Debugging
  • Data Types
  • Using Variables
  • The typeset Command
  • Constants
  • Special Predefined Variables
  • Printing to the Screen (echo, print)
  • The printf Command
  • Accepting Input with ksh
  • Accepting Input with bash
  • Arithmetic Operators
  • Floating-Point Numbers
  • Bitwise Operators
  • Grouping Operations
  • Binary, Octal, and Hexadecimal
  • Indexed Arrays
  • Quoting
  • Command Substitution
Advanced Customization of the Shell Environment
  • Command Line Options
  • The set command
  • Parents and Children
  • Inheritance
  • Exporting
  • Dot Scripts
  • Startup Scripts
  • Environment Variables
  • Setting Prompts in ksh and bash
Programming Logic
  • Conditional Expressions
  • Testing Strings
  • Testing Options
  • Numeric Conditions
  • Testing Completion Status
  • Truth in Korn and Bash Shells
  • The case Statement
  • Loops: while and until
  • The for Loop
  • Menus and the select Statement
  • Redirection and Loops
  • When to Use Different Constructs
Advanced I/O with Streams
  • Redirection Review
  • Opening Additional Streams
  • Redirection Operators
  • Inheriting and Duplicating Streams
  • Caution with exec
  • here Documents
String Manipulation
  • String Comparison
  • String Relations
  • Concatenation
  • Substring Manipulations
  • Wildcards and Pattern Matching
Security
  • Process Ownership
  • suid and sgid
  • Restricted Shells
  • Other Security Features
  • The newgrp Command
  • Statement blocks
  • case Statement
Command Line Processing
  • Getting Data Into Scripts
  • Manipulating Positional Parameters (set, sort, shift)
  • Analyzing Switches with getopts
  • Options
  • Reserved Variables (OPTARG, OPTIND, IFS)
  • Setting Default Values
Performance and Porting Issues
  • Improving the Performance of Scripts
  • Timing Commands and Scripts
  • System Resources
  • Setting Limits
  • Portability Issues
Overview of File Manipulation Utilities
  • Editing a File from a Script
  • Scripting with ed or sed
  • UNIX and Linux Utilities to Manipulate Files
  • Regular Expressions
  • grep and egrep
  • The Stream Editor sed
  • Sorting in Scripts
  • Generating Reports with awk
  • Splitting Large Files
  • Counting Words, Lines, and Characters
  • Transforming File Contents
  • Extracting Text Strings
Additional File Processing Commands
  • Examining and Comparing Files
  • Reporting Differences Between Files
  • Comparing Files of Any Format
  • Displaying Data in Octal and Hex
  • Compressing Data
  • Converting File Formats
Functions
  • Writing Functions
  • Returning Value from Functions
  • Returning String Output
  • Local and Global Variables
  • Defining Functions
  • ksh Autoload Functions
Compound Commands
  • Pipelines
  • Command Lists
  • And and Or Lists
  • Background Jobs
  • Command Grouping
  • I/O Redirection
  • Course materials include student guide, hands-on lab manual and USB flash drive for examples and lab work
  • Students receive a certificate of completion at the end of class
  • Students can retake any portion of a class that has been completed, within 12 months at no extra cost
  • There are no registration fees or cancellation fees

The instructor was incredible. He clearly explained command concepts and their practical use. One of the best courses I have attended!
— D.J., Bereskin & Parr LLP


One of the best training classes I have ever had. I will definitely recommend HOTT to my friends for their training needs.
— J.W., Independent Contractor


Great instructor; very responsive to every question, would stay with us after hours.
— E.G., Statesman.com

Individual training passes: save up to 43%! For complete discount options » click here «

# Courses Total Cost Cost Per Course % Savings
2 $4,090 $2,045 22%
3 $5,490 $1,830 30%
4 $6,690 $1,672 36%
5 $7,790 $1,558 40%
6 $8,890 $1,482 43%

Multiple Training Locations - Convenience and Cost Control

Attend Regularly Scheduled Courses in More than 100 Cities Across North America and the United Kingdom or via Remote Attendance