Students who can benefit from this course are system administrators, system programmers, UNIX operators, database administrators, and Web administrators.

• Use basic UNIX commands, such as rm, cp, man, more, mkdir, ps, chmod, and so on
• Create and edit text files in vi or a text editor

• Describe the role of shells in the UNIX environment
• Define shell script components
• Write, execute and debug shell scripts
• Use Bourne and Korn shell variables
• Customize the user environment using the .profile file
• Perform arithmetic operations
• Create and use aliases
• Customize the Bourne and Korn shell environments
• Use and describe regular expressions
• Use the grep command to find patterns in a file
• Use the sed editor to perform noninteractive editing tasks
• Write simple nawk programs to generate data reports from text files
• Use conditional if, then, elif, else, and fi constructs
• Create, invoke, and display functions
• Use the print and echo statements
• Use the read statement
• Write scripts that use for, while, and until loops
• Write a script using the select statement
• Process script options using the getopts statement
• Declare strings, integers, and array variables
• Use the Korn shell built-in let, print, set, and typeset statements

Module 1 - UNIX Shells and Shell Scripts

• Describe the role of shells in the UNIX environment
• Describe the standard shells
• Define shell script components
• Write a simple shell script

Module 2 - Writing and Debugging Scripts

• Start a script with #!
• Put comments in a script
• Change permissions on a script
• Execute a script
• Debug a script

Module 3 - The Shell Environment

• Use Bourne and Korn shell variables
• Assign values to shell variables
• Display the value of shell variables
• Make variables available to subprocesses using the export statement
• Display the value of environment variables
• Unset shell and environment variables
• Customize the user environment using the .profile file
• Perform arithmetic operations
• Create and use aliases
• Display aliases and the values assigned to them
• Define the built-in aliases
• Customize the Bourne and Korn shell environments
• Use the tilde expansion and command substitution features of the Korn shell

Module 4 - Regular Expressions and the grep Command

• Use and describe regular expressions
• Describe the grep command
• Use the grep command to find patterns in a file
• Use the regular expression characters with the grep command

Module 5 - Using the sed Editor

• Use the sed editor to perform noninteractive editing tasks
• Use regular expression characters with the sed command

Module 6 - The nawk Programming Language

• Use nawk commands from the command line
• Write simple nawk programs to generate data reports from text files
• Write simple nawk programs to generate numeric and text reports from text files

Module 7 - Conditionals

• Use the command exit status as conditional control
• Use the if statement to test a condition
• Pass values using command-line arguments (positional parameters) into a script
• Create USAGE messages
• Place parameters on the command line
• Use conditional if, then, elif, else, and fi constructs
• Use exit, let, and test statements ( [[ ]] , (( )) )
• Apply the &&, ||, and ! Boolean logic operators
• Use the case statement

Module 8 - Functions

• Create user-defined functions in a shell script
• Create, invoke, and display functions from the command line
• Pass arguments into a function
• Call functions from special (function) files that are saved in one or more function directories
• Describe where functions are available for use

Module 9 - Interactive Scripts

• Use the print and echo statements to display text
• Use the read statement to interactively assign data to a shell variable
• Read user input into one or more variables, using one read statement
• Use special characters, with print and echo, to make the displayed text more user friendly
• Create a "here" document
• Use file descriptors to read from and write to multiple files

Module 10 - Loops

• Write scripts that use for, while, and until loops
• Write a script using the select statement
• Describe when to use loops within a script
• Generate argument lists using command, variable, and file-name substitution

Module 11 - The getopts Statement

• Process script options using the getopts statement

Module 12 - Advanced Variables, Parameters, and Argument Lists

• Declare strings, integers, and array variables
• Use the Korn shell built-in let, print, set, and typeset statements
• Manipulate string variables
• Change positional parameter values using the set statement within a script
• Use Korn shell arrays
• Set default parameter values

Module 13 - Traps

• Describe how the trap statement works
• Include trap statements in a script
• Use the trap statement to catch signals and handle errors