Korn Shell Scripting (3 day)

Somerset

Bath (BA1)

22/03/10

£

1,100

Bath (BA1)

19/04/10

£

1,100

Bath (BA1)

17/05/10

£

1,100

Bath (BA1)

19/07/10

£

1,100

Bath (BA1)

23/08/10

£

1,100

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Course Overview

The course is highly interactive and consists of theory with plenty of hands on practical content. This course will provide programmers and UNIX Support Staff with the skills necessary to construct extensive UNIX shell scripts. By the end of the course, delegates will confidently be able to put together and maintain complex shell scripts.

Audience

Experienced programmers and support staff, who have some experience of UNIX based systems, and who will be implementing further applications and systems. The course is suitable for delegates wishing to use the Korn or Bourne shell on all versions of UNIX. (e.g. AIX, Solaris, HPUX, Irix, Linux etc.).

Prerequisites

Students should have a good basic understanding of UNIX, gained through a UNIX: The Essentials course and at least three months practical experience. Knowledge of a standard UNIX editor will be required.

Course Outline

Introduction and Background Information

Review of Unix Concepts and Commands

• Major Components of UNIX
• The filesystem
• Listing Directories
• Creating Files
• Displaying Files
• Moving Around Directories
• Escaping Shell Processing
• Redirection
• Piping
• Searching for a Pattern
• Finding Files
• User Security
• Other Useful Commands

The Shell Environment

• Shell Environment
• System Variables
• Shell Variables
• Assigning Variables
• Displaying Variable Values
• Exporting variables
• Shell Interpretation
• Using Quotes in the Shell
• The Back Quote
• The Single Quote
• The Double Quotes
• The Backslash
• Special Escape Characters

Executing Applications

• Simple Shell Scripts
• Shell Scripts
• Executing Shell Scripts
• Passing Arguments To A Program
• Positional Parameters
• Special Shell Parameters
• The Shift Command
• Read Command
• Expr Command

Miscellaneous Utilities

• Newgroup
• Cut and Paste
• Comparing Files
• Head and tail
• Touching files
• Grouping Commands
• Typeset
• Here Documents
• Shell Functions

Controlling Program Flow

• Conditional Processing
• Logical Constructs
• Basic Structured Conditionals
• Nesting Structured Condition
• ELIF Statement
• Test String Operators
• Test Integer Operators
• Test File Operators
• Test Logical Operators
• Multi-Way Branching (Case)
• The For Command
• For Statement Without Word List
• The While Command
• The Until Command
• The True Command
• The False Command
• The Break Command
• The Continue Command

Additional Programming Topics

• Shell Script Comments
• The Exit Command
• The Sleep Command
• The Wait Command
• The Set Command
• The Unset Command
• Special Variable Constructs
• The Null Command
• Signals used by Shell Procedures
• Interrupt handling
• Execution Trace
• Verbose Trace
• Combining Execution and Verbose Traces
• Timing Command
• Programming Hints
• Creating Efficient Shell Procedures

Korn Shell Facilities

The Stream Editor

• The Stream Editor
• Searching and Replacing Text
• Deleting lines
• Printing Lines
• Edit Files

The Awk Utility

• The awk utility
• Operators
• BEGIN and END
• Arithmetic operators
• Program Control
• Print Formatting

Practical Application of Shell Scripts

• Program Maintenance
• System Monitoring