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Shell Programming: Hands-On

Shell Scripting Using Bash and KornShell

 
Course: 434     Type: Hands-On Training     Duration: 3 Days

Quick Enroll    

You Will Learn How To
  • Write Bash and KornShell scripts for improved productivity
  • Integrate all key language features: variables, pattern matching, arrays, branches, loops, I/O and functions
  • Improve efficiency by performing complex file handling and string manipulations without external tools
  • Launch and control additional processes using shell scripts
  • Customize and extend the user environment login scripts
  • Wrap external file and text handling tools within scripts

Course Benefits
KornShell (ksh) and Bash have evolved into full-featured programming languages with efficient built-in constructs that can handle tasks traditionally solved using grep, sed and awk. This hands-on course provides the skills you need to write reusable, robust shell scripts to extend the user environment and automate complex administrative tasks.

Who Should Attend
Administrators, developers and other professionals using shell programming for improved productivity. Knowledge of UNIX or Linux at the level of Course 428, "UNIX Comprehensive Introduction," or Course 143, "Linux Comprehensive Introduction," is assumed.

Hands-On Training
Throughout this course, you write a series of Bash or KornShell scripts that build in complexity as you master each new construct. Instructor-led exercises include:
  • Creating loops and making decisions using case, while and if
  • Performing text processing tasks using IFS and read
  • Breaking a large program into functions
  • Handling errors with default values
  • Handling unexpected events with trap
  • Manipulating multiple files

Course 434 Content
Introduction and Overview
  • Role of shell scripting
  • Benefits of KornShell and bash vs. other shells
  • Differences and similarities between bash, ksh88 and ksh93
  • Integrating scripts with external tools: grep, sed, awk and others
  • Customizing the login environment
Bash and Kornshell Scripting Fundamentals
Shell script elements
  • Commands and comments
  • Defining exit values
Conditional program execution
  • Applying if and case statements
  • Simplifying if logic with elif
Program loops and iteration
  • Conditional looping with while and until
  • Listing for loops
Testing files and directories
  • Analyzing attributes
  • Checking file size and contents
Strings and patterns using [[ ]]
  • Comparing strings
  • Verifying the existence of a string
  • Pattern matching and special characters
Debugging
  • Redirecting standard error
  • set commands for debugging
Storing and Accessing Data
Positional parameters
  • Passing and accessing parameters
  • Setting and unsetting parameters
  • Manipulating parameters as groups
Shell variables
  • Defining environment and local variables
  • Specifying default values and error conditions
Arrays
  • Creating and indexing arrays
  • Processing array contents with special variables
Processing Data
Manipulating strings
  • Extracting substrings
  • Determining string length
  • Find and replace
Mathematics
  • Arithmetic for and while loops
  • Writing mathematical expressions: (( )), $(( )) and let
Modular Programming with Functions
Function basics
  • Functions vs. scripts
  • Parameters and variables
Creating a function library
  • Finding your library with PATH
  • dot . commands
Interacting with the Outside World
Manipulating files and redirecting data
  • Scripting file and directory management
  • Deciphering redirection order
  • Unraveling the secrets of exec: opening and closing multiple files
Interacting with running processes
  • Handling errors
  • Defining post-termination actions such as notification, cleanup
  • Handling and sending signals: trap and kill
Accessing network servers
  • Connecting to a network server
  • Exchanging data with a network server
Creating "Production Quality" Scripts
Ensuring environmental control
  • Checking and modifying environment variables
  • Using getopts to process command line options
Handling user interactions
  • Setting up error processing
  • Employing select to create a menu interface
  • Processing keyboard input

Related Courses
UNIX is a registered trademark of X/Open Company, Limited. Linux is a registered trademark of Linus Torvalds.
  
 
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Save as much as $2,350 on a Triple-Pack!

Shell Programming: Hands-On
Upcoming Dates
May 28 - 30, 2008
 New York
Oct 8 - 10, 2008
 Washington, DC (Rockville, MD)
Nov 12 - 14, 2008
 New York

Shell Programming: Hands-On
Bring Learning Tree On-Site

Course Tuition
$ 2,250 Standard Tuition
Tuition with a Savings Plan
$ 1,245 10-Day Pass
$ 1,665 Training Passport
$ 1,830 Flex-Pass
$ 2,095 Voucher 10-Pack
$ 2,025 Alumni Gold Discount
$ 2,000 Government Discount
 

 

Shell Programming: Hands-On
Shell Programming: Hands-On
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CPE 23 Credits 1 Hour(s) College Credit
Customer Service or Enroll: 1-800-843-8733