Course Icon HP-UX Training

HP-UX Posix Shell Programming

0800 1337 401

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.

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.

Outline

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

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

Course Contents - DAY 3

Session 12: BACKUP AND RESTORE UTILITIES

  • The tar command
  • Compression utilities gzip, bzip2, zip and compress
  • Exercise: Backing up and restoring files using tar
  • Exercises: Compressing files

Session 13: BACKGROUND JOB SCHEDULING

  • Scheduling jobs with the cron command
  • Scheduling jobs with the at command
  • Exercises: Running background jobs

Session 14: 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
  • Exercises: Identifying file differences

Session 15: SPLITTING FILES

  • The split and csplit commands
  • Exercises: Splitting files

Course Contents - DAY 4

Session 16: IDENTIFYING AND TRANSLATING CHARACTERS

  • od - octal dump
  • Use cat to display non-printing characters
  • The expand and unexpand commands to convert between tab and space characters
  • The tr command for character translation
  • Exercises: Translating characters with tr

Session 17: REGULAR EXPRESSION NOTATION REVIEW

  • Standard regular expressions
  • Extended regular expressions

Session 18 THE STREAM EDITOR - sed

  • sed command line syntax
  • sed command processing
  • Pattern space
  • sed addresses
  • sed commands
  • Hold and get functions
  • Advanced flow control
  • Exercises: Text processing with sed

Session 19: INTRODUCTION TO THE PATTERN SCANNING UTILITY - awk

  • Introduction and command line syntax
  • The awk program structure
  • Operators
  • Simple patterns
  • Extended patterns
  • Special patterns (BEGIN and END)
  • Program variables: Built-in variables, User defined variables, Arrays
  • Mathematical operators
  • Displaying output with print and printf
  • Exercises: Create awk scripts to extract selected data from a file and generate reports

Course Contents - DAY 5

Session 20: awk PROGRAM CONTROL STRUCTURES

  • Program control structures
  • The if construct
  • The while and do ... while constructs
  • The basic for construct
  • Associative array handling
  • Functions: Mathematical and string functions, The system function, The getline function, User defined functions
  • Exercises: Create an awk script using an program control structures and arrays

Session 21: awk DEBUGGING AWK SCRIPTS

  • Responding to Syntax errors
  • Responding to Logical errors

Session 22: MISCELLANEOUS TOOLS

  • bc (calculator)
  • fuser (testing for files in use)
  • getops (checking options passed to shell scripts)
  • printf (formatting screen output)
  • logger (script logging)
  • xargs (generating arguments for a command)
  • eval (re-evaluating variables)
  • Exercises: Using tools within a shell script
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