Linux Shell Programming

Course Code: LSP

Duration: 2 days

 
 

Linux Shell Programming Course Overview

This Linux Bash Shell Programming training course is designed to give delegates practical experience in developing and writing LINUX 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.

Exercises and examples are used throughout the course to give practical hands-on experience with the techniques covered.

Course Objectives

To provide the skills needed to develop and customise shell programs.

Who will the Course Benefit?

Programmers, administrators and support personnel who need to understand existing shell scripts, automate procedures and write their own utilities.

Skills Gained

The delegate will learn and acquire skills as follows:

  • 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
  • User defined Functions
  • Developing menu-driven shell scripts

Linux Shell Programming Training Course

Course Introduction

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

Session 1: LINUX COMMAND REVIEW

  • Basic Linux commands
  • General commands
  • File and directory handling commands
  • Filename generation characters and regular expressions (regex)
  • I/O Redirection features
  • Other commands

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: Write a simple shell script

Session 3: 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 4: INTEGER ARITHMETIC

  • Using the expr command
  • Using the (( )) notation
  • Exercise: Add integer arithmetic to a shell script

Session 5: HANDLING RUN TIME DATA

  • The read command
  • Command line arguments
  • Exercise: Writing a generic shell script
  • Exercise: Writing an interactive shell script

Session 6: CONDITIONAL EXECUTION

  • The if statement
  • The test command
  • Exercise: Adding validation to previous scripts

Session 7: ADDITIONAL KORN, BASH & POSIX SYNTAX

  • Other test notations
  • Default and substitute variables
  • Exit status codes
  • Exercise

Linux Shell Programming Training Course

Session 8: 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 script to copy files using a 'for' loop
  • Exercise: Writing a script to generate numbers with the 'while' loop

Session 9: MULTI-BRANCH DECISIONS

  • The case statement
  • Menu driven applications
  • Exercise: Developing and writing a menu system

Session 10: FUNCTIONS

  • What is a function?
  • Syntax
  • Examples
  • Exercise: Add a function to a script

Session 11: INTERRUPT HANDLING

  • Interrupt signals
  • Trapping interrupts
  • Exercise: Adding traps to the menu script

Session 12: ADDITIONAL FEATURES AND FACILITIES

  • The exec commands
  • The includes notation
  • More about loops
  • Arrays
  • Here Documents
  • Exercise: Create a here script
Notes:
  • Course technical content is subject to change without notice.
  • Course content is structured as sessions, this does not strictly map to course timings. Concepts, content and practicals often span sessions.

Examinations

This course, together with the Linux Introduction course, helps delegates prepare for the following exam:

  • Linux Essentials (LPI, exam 010-160)

This course, together with the Linux Introduction and Linux System Administration (LPI & CompTIA) courses, helps delegates prepare for the following exams:

  • Linux Administrator (LPIC-1, exams LPI 101-500 and LPI 102-500)
  • CompTIA Linux+ (exams LX0-103, LX0-104 and XKO-004)

Attending this course will help delegates gain many of the skills and product knowledge requirements as outlined in the exams objectives. Studying these courses and their associated reference materials can form part of the preparation to achieve certification. Experience, practice, self-study and aptitude are also key requirements for exam success.

Before taking any exam, ensure you have the recommended experience. The LPI and CompTIA websites lists all exam requirements and these are updated regularly.

Exams are not included as part of the course.

Requirements

The Linux Shell Programming course assumes knowledge of the LINUX Operating System to the level covered in the Linux Introduction course. Some programming experience may also prove advantageous.

Pre-Requisite Courses

Course Reviews

Mark is a great teacher and I really enjoyed the two days course that he taught. The pace and presentation were excellent as well as the content

Dmytro - April 2021


Mark was very knowledgeable and although the course was taught at a fair pace he made sure we all understood the logic of the various sections before moving on. This was my first experience of taking a course remotely and the differences between this and classroom learning were not as great as I'd feared. All in all a useful course, and well taught and administered.

Chris - Applications Support Analyst - Logistics - October 2020


Very good trainer, he explains everything clearly and the combination of his slides, worked examples and the handbook work really well together.

Jenny - Digital Archivist - Government


The trainer was fantastic with all his explanation and style of teaching. Thanks

Ambrose - Application Support Analyst - Postal/Distribution


The trainer delivered a very good course. He has excellent knowledge of the subject matter and he is extremely succinct explaining complex concepts. I thoroughly enjoyed the course and feel confident I can now better understand and maintain the numerous and varied scripts that we support.

- Applications Developer - Academic


The course was very useful indeed and covered the Shell scripting content we require in support. I have learnt how to create scripts, amend and write shell programming which is new and very useful techniques. Due to the way I learn I may have benefitted from further time to digest certain topics before moving onto the next one, which could be the course duration or it moving a little too fast for me. Overall, very good course with a very knowledgeable trainer, who always helped with the tasks and explanations in detail.

Andrew - Application Support manager - Transport


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Duration: 2 days

Price: £850.00 exc. VAT 


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