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Aix Fundamentals

Programmers, administrators and support personnel who need to understand the AIX Operating system, existing shellscripts, automate procedures and write their own utilities.

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Learning Objectives

It is designed to give delegates practical experience in developing and writing shellscripts. Most of the built-in shell commands are introduced together with the main program control structures.


The delegates will practise:

    Creating, copying, renaming, moving and deleting files and directories
    Using the shell's redirection and pipe facilities
    Editing text files using the vi editor
    Setting and changing access permissions on files
    Monitoring and controlling their own processes
    Using the basic file and text searching utilities
    Customising their own login environment
    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
    Developing menu-driven shellscripts

Pre-Requisites

There are no formal pre-requisites for the AIX Fundamentals course, although an understanding of and exposure to information technology is advantageous.

Some programming experience may also prove advantageous.

Course Content

This IBM AIX Operating System and Korn Shell Programming training course introduces the delegate to the main concepts of the AIX Operating System.  The most commonly used commands are described in detail as are the command line wildcard and redirection facilities.  The mechanisms by which a user acquires a login environment are discussed and the main features of the Korn/Posix/Bash Shells are introduced.

It is designed to give delegates practical experience in developing and writing shellscripts. Most of the built-in shell commands are introduced together with the main program control structures.


Typical Course Contents - DAY 1

Course Introduction

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

Session 1: INTRODUCTION TO THE AIX OPERATING SYSTEM
A brief history of UNIX
The UNIX kernel
The UNIX file system
Getting started navigating the file system
The file system structure
Directories and files
Pathnames
Navigating the file system
Exercise:   Logging on to the system
Exercise:   Navigating the file system
       
Session 2: BASIC COMMANDS
Command line syntax
Basic file handling commands
Basic Directory handling commands
Filename wildcard characters
Exercise:   Manipulating files and directories

Session 3: REDIRECTION AND PIPES
Input redirection
Output redirection
Pipes
Exercise:   Using redirection and pipe facilitie

 

Course Contents - DAY 2

Session 4: INTRODUCTION TO THE vi EDITOR
Overview of the vi editor
Basic functions
Switching to input mode
Other useful commands
Exercise:   Using the vi editor
Exercise:   Using more advanced vi features

Session 5: SEARCHING AND REPLACING TEXT
Replacing text
Using the vi editor
Using sed for search and replace
Searching for text with grep
Exercises:   Searching and Replacing Text

       
Session 6: RECALLING AND EDITING COMMANDS
Overview
The bash shell
The korn shell
Exercises:   Recall and Edit Commands

Session 7: FILE PERMISSIONS AND ACCESS CONTROL
Users and user groups
File access permissions
Changing file attributes
Switching users and user groups
Linking files
Exercise:   Setting and access permissions


Course Contents - DAY 3

Session 8: PROCESSES
What is a process?
Monitoring processes
Killing processes
Background processes
Job Control
Grouping commands
Exercise:   Monitoring and controlling processes

Session 9: THE USER ENVIRONMENT
Customising the .profile or .bash_profile
Customising the .kshrc or .bashrc
Exercise:   Setting up an environment

Session 10: MORE BASIC COMMANDS
The find command
The cut command
The sort command
The finger command
Exercise:   Using file handling commands

 

Course Contents - DAY 4

Session 11: UNIX COMMAND REVIEW
Basic Unix commands
General commands
File and directory handling commands
Filename generation characters
I/O Redirection features
Other commands

Session 12: 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 13: 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 14: INTEGER ARITHMETIC
Using the expr command
Using the (( )) notation
Exercise:   Add integer arithmetic to a shell script

Session 15: HANDLING RUN TIME DATA
The read command
Command line arguments
Exercise:   Writing a generic shell script
Exercise:   Writing an interactive shell script

Session 16: CONDITION EXECUTION
The if statement
The test command
Other test notations
Default and substitute variables
Exit status codes
Exercise:   Adding validation to previous scripts
 

Course Contents - DAY 5

Session 17: 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 guess-the-number game

Session 18: MULTI-BRANCH DECISIONS
The case statement
Menu driven applications
Exercise:   Developing and writing a menu system
Session 19: FUNCTIONS
What is a function?
Syntax
Examples
Exercise:   Add a function to a script 

Session 20: INTERRUPT HANDLING
Interrupt signals
Trapping interrupts
Exercise:   Adding traps to the menu script

Session 21: ADDITIONAL FEATURES AND FACILITIES
The exec commands
The includes notation
More about loops
Arrays
Here Documents
Exercise:   Create a here script



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