UNIX Shell Programming
Course
Online
Description
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Type
Course
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Methodology
Online
This Unix Shell Programming training course is designed to give delegates practical experience in developing and writing UNIX shell scripts Most of the built-in shell commands are introduced together with the main program control structures. This course is not suitable for C shell programmers. Who will the Course Benefit? Programmers, administrators and support personnel who need to understand existing shell scripts, automate procedures and write their own utilities. Learning Objectives The delegates will practise: Writing simple scripts to enhance basic command outputUsing the various shell quoting mechanisms appropriatelyManipulating shell variables and user-defined variables in scriptsImplementing conditional execution facilitiesUsing the shell's built-in loop constructs where appropriateWriting scripts to trap user interruptsUser defined FunctionsDeveloping menu-driven shell scripts To provide the skills needed to develop and customise unix shell programs.
About this course
The UNIX Shell Programming course assumes knowledge of the UNIX Operating System to the level covered in the Introduction to UNIX Course. Some programming experience may also prove advantageous.
Reviews
Subjects
- Programming
- Writing
- Unix
Course programme
Course Contents - DAY 1Course Introduction
- Administration and Course Materials
- Course Structure and Agenda
- Delegate and Trainer Introductions
- Basic Unix commands
- General commands
- File and directory handling commands
- Filename generation characters
- I/O Redirection features
- Other commands
- 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
- 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
- Using the expr command
- Using the (( )) notation
- Exercise: Add integer arithmetic to a shell script
- The read command
- Command line arguments
- Exercise: Writing a generic shell script
- Exercise: Writing an interactive shell script
- The if statement
- The test command
- Other test notations
- Default and substitute variables
- Exit status codes
- Exercise: Adding validation to previous scripts
- 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 script to copy files using a 'for' loop
- Exercise: Writing a script to generate numbers with the 'while' loop
- The case statement
- Menu driven applications
- Exercise: Developing and writing a menu system
- What is a function?
- Syntax
- Examples
- Exercise: Add a function to a script
- Interrupt signals
- Trapping interrupts
- Exercise: Adding traps to the menu script
- The exec commands
- The includes notation
- More about loops
- Arrays
- Here Documents
- Exercise: Create a here script
UNIX Shell Programming