S5

HP-UX Posix Shell Programming Course Overview

This Hewlett Packard HP-UX Posix Shell Programming training course is designed to give delegates practical experience in developing and writing shell scripts.  Most of the built-in shell commands are introduced together with the main program control structures.

The course also gives practical experience using a range of HP-UX tools to manipulate text and incorporate into HP-UX shell scripts.

Skills Gained

The delegates will practise:

• 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
• Backing up and restoring files
• Scheduling background jobs using cron and at
• Using file comparison utilities
• Using the head and tail utilities
• Using the cut and paste utilities
• Using split and csplit
• Identifying and translating characters
• Sorting files
• Using regular expressions
• Translating characters in a file
• Selecting text from files with the grep family of commands
• Editing text files with sed
• Creating programs with awk

Who will the Course Benefit?

Programmers, developers and system administrators who need to construct shell scripts using advanced text handling facilities.

The HP-UX Posix 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.

Course Objectives

To provide the skills needed to develop and customise shell programs and to make effective use of a wide range of standard HP-UX programming and development tools.

Note:

This 5-day HP-UX Posix Shell Programming course combines the HP-UX Shell Programming and HP-UX Advanced Shell Programming Tools courses.  If the dates allocated to this 5-day course are not suitable, then this course can also be booked by selecting dates from both the HP-UX Shell Programming and the HP-UX Advanced Shell Programming Tools courses.  The Shell Programming course should be attended first and may start on either a Monday or a Thursday.

Pre-Requisite Courses

• HP-UX Introduction

Follow-On Courses

• HP-UX System Administration
• Oracle SQL

NOTE: Course technical content is subject to change without notice.

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HP-UX Posix Shell Programming Training Course

Course Contents - DAY 1

Course Introduction

• Administration and Course Materials
• Course Structure and Agenda
• Delegate and Trainer Introductions

Session 1: UNIX COMMAND REVIEW

• Basic UNIX commands
• Filename generation characters
• Redirection and pipes

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:   Create and run a simple shellscript

Session 3: USING VARIABLES

• Environment variables
• Local variables
• Assigning values to variables
• Accessing variable values
• Using quotes
• Delimiting variable names
• echo control sequences
• Exercises:   Use variables in shellscripts

Session 4: INTEGER ARITHMETIC

• Using the expr command
• Using the (( )) notation
• Exercises:   Use integer arithmetic in shellscripts

Session 5: HANDLING RUN TIME INPUT

• The read command
• Command line arguments and related variables
• Exercise:   Writing an interactive shell script

Session 6: CONDITION TESTING

• The if-then-elif-else statement
• String tests
• Integer tests
• Filename tests
• Other test notations
• Default and substitute variables
• Exit status codes
• Counting characters
• Testing for numeric input
• Exercise:   Add validation to previous scripts

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HP-UX Posix Shell Programming Training Course

Course Contents - DAY 2

Session 7: LOOP CONSTRUCTS

• The while loop
• The until loop
• The while true and until false loops
• The for loop
• Loop control commands
• Exercises:   Enhance the previously written scripts with loop constructs

Session 8: MULTI-BRANCH DECISIONS

• The case statement
• Patterns and actions
• Menu driven applications
• Exercise:   Develop and write a menu system

Session 9: FUNCTIONS

• What is a function?
• Function syntax
• Exercises:   Create and use functions

Session 10: INTERRUPT HANDLING

• Interrupt signals
• The trap command
• Abnormal termination of scripts
• Exercise:   Adding traps to the menu script

Session 11: ADDITIONAL FEATURES

• The exec command
• The includes notation
• Arrays
• Here Documents
• Exercise:   Enhance scripts

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HP-UX Posix Shell Programming Training Course

Course Contents - DAY 3

Session 12: REVIEW OF SHELL FUNDAMENTALS

• Review of UNIX Commands

Session 13: USING UNIX SHELLS

• Command line history and editing
• The Korn and POSIX shells
• The Bash shell
• Command aliasing
• The shell startup file
• Shell environment variables

Session 14: REDIRECTION, PIPES AND FILTERS

• Standard I/O and redirection
• Pipes
• Command separation
• Conditional execution
• Grouping commands
• UNIX filters
• The tee command

Session 15: BACKUP AND RESTORE UTILITIES

• Archive devices
• The cpio command
• The tar command
• The dd command
• Exercise:   Backing up and restoring files using tar
• Exercise:   Backing up and restoring files using cpio

Session 16: BACKGROUND JOB SCHEDULING

• Starting background jobs
• Background tasks and the nohup command
• Process priorities and the nice command
• Job control
• Scheduling jobs with the at command
• Scheduling jobs with the cron command
• Exercise:   Running and background jobs

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HP-UX Posix Shell Programming Training Course

Course Contents - DAY 4

Session 17: REGULAR EXPRESSION NOTATION

• Regular expressions
• Extended regular expressions

Session 18: SEARCHING FILES FOR PATTERNS

• The grep family of commands
• The grep command
• The fgrep command
• The egrep command
• Exercises:   Search for patterns with grep and egrep

Session 19: THE STREAM EDITOR - SED

• Introduction and command line syntax
• The sed program structure
• sed program processing
• Use sed commands
• sed addresses
• sed instructions
• Hold and get functions
• Advanced flow control
• Exercises:   Simple text processing with sed
• Exercises:   Create sed scripts to edit files

Session 20: COMMANDS FOR COMPARING FILES

• Compare two files with the cmp command
• Compare two files with the comm command
• Compare two files with the diff and sdiff commands
• Compare large files with the bdiff command
• Exercise:   Identifying file differences

Session 21: FILE MANIPULATION COMMANDS

• The head and tail commands
• The cut command
• The paste command
• The pr command
• The split and csplit commands
• Exercises:   Manipulate text with cut and paste
• Exercises:   Manipulate text with head and tail

Session 22: IDENTIFY AND TRANSLATE CHARACTERS

• od - octal dump
• Use cat to display non-printing characters
• The expand and unexpand commands
• The tr command
• Exercises:   Translating text files with tr
• Exercises:   Display non-printing characters

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HP-UX Posix Shell Programming Training Course

Course Contents - DAY 5

Session 23: SORTING FILES

• The sort command
• Specify sort keys with -k
• Sort by column positions
• The uniq command
• Exercises:   Sorting text files

Session 24: INTRODUCTION TO THE PATTERN SCANNING UTILITY - AWK

• Introduction and command line syntax
• The awk program structure
• Use regular expressions
• Operators
• Simple patterns
• Extended patterns
• Comments
• Special patterns (BEGIN and END)
• Program variables
  • Built-in variables
  • User defined variables
• Mathematical operators
• Enhanced printing
• Handling user variables
• Exercises:   Create simple awk scripts
• Exercises:   Create a simple awk script using variables

Session 25: AWK PROGRAM CONTROL STRUCTURES

• Program control structures
• The if construct
• The while and do ... while constructs
• The basic for construct
• Associative array handling
• Functions
  • Built in functions
  • The system function
  • The getline function
  • User defined functions
• Exercises:   Create an awk script using an associative array
• Exercises:   Create an awk script using a for loop and if statement
• Exercises:   Create an awk script using functions