ITIL4 Foundation

This Hewlett Packard HP-UX Posix Shell Programming training course is designed to give delegates practical experience in developing and writing HP-UX shell scripts. Most of the built-in shell commands are introduced together with the main program control structures. This course is not suitable for C shell programmers.

The delegate will learn and acquire skills as follows:

• Writing simple scripts to enhance basic command output
• Using the various shell quoting mechanisms appropriately
• Manipulating shell variables and user-defined variables in scripts
• Implementing conditional execution facilities
• Using the shell's built-in loop constructs where appropriate
• Writing scripts to trap user interrupts
• User defined Functions
• Developing menu-driven shell scripts

Programmers, administrators and support personnel who need to understand existing shell scripts, automate procedures and write their own utilities.

The course assumes knowledge of the HP-UX Operating System to the level covered in the HP-UX Introduction course. Some programming experience may also prove advantageous.

To provide the skills needed to develop and customise shell programs.

The HP-UX Shell Programming course assumes knowledge of the HP-UX Operating System to the level covered in the HP-UX Introduction course. Some programming experience may also prove advantageous.

• HP-UX Introduction

• HP-UX System Administration
• Oracle SQL
• HP-UX Advanced Shell Programming Tools

• Course technical content is subject to change without notice.
• Course content is structured as sessions, this does not strictly map to course timings. Concepts, content and practicals often span sessions.

Course Contents - DAY 1

Course Introduction

• Administration and course materials
• Course structure and agenda
• Delegate and trainer introductions

Session 1: HP-UX COMMAND REVIEW

• Basic Unix commands
• General commands
• File and directory handling commands
• Filename generation and regular expression characters
• I/O Redirection features
• Other commands

Session 2: GETTING STARTED

• What is a shell script?
• Development guidelines
• Creating and editing shell scripts
• Naming and storing shell scripts
• Executing shell scripts
• Exercise: Write a simple shell script

Session 3: USING VARIABLES

• Environment variables
• Local variables
• Assigning values to variables
• Assessing variable values
• Using quotes
• Delimiting variable names
• Echo control sequences
• Exercise: Add variables to a script

Session 4: INTEGER ARITHMETIC

• Using the expr command
• Using the (( )) notation
• Exercise: Add integer arithmetic to a shell script

Session 5: HANDLING RUN TIME DATA

• The read command
• Command line arguments
• Exercise: Writing a generic shell script
• Exercise: Writing an interactive shell script

Session 6: CONDITIONAL EXECUTION

• The if statement
• The test command
• Exercise: Adding validation to previous scripts

Session 7: ADDITIONAL KORN, BASH & POSIX SYNTAX

• Other test notations
• Default and substitute variables
• Exit status codes
• Exercise

Course Contents - DAY 2

Session 8: LOOP CONSTRUCTS

• The while loop
• The until loop
• The for loop
• The while true and until false loops
• Loop control commands
• Exercise: Enhancing the previously written scripts
• Exercise: Writing a script to copy files using a 'for' loop
• Exercise: Writing a script to generate numbers with the 'while' loop

Session 9: MULTI-BRANCH DECISIONS

• The case statement
• Menu driven applications
• Exercise: Developing and writing a menu system

Session 10: FUNCTIONS

• What is a function?
• Syntax
• Examples
• Exercise: Add a function to a script

Session 11: INTERRUPT HANDLING

• Interrupt signals
• Trapping interrupts
• Exercise: Adding traps to the menu script

Session 12: ADDITIONAL FEATURES AND FACILITIES

• The exec commands
• The includes notation
• More about loops
• Arrays
• Here Documents
• Exercise: Create a here script