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UN033 Linux Bash Programming on your request on your request Contact Us

Linux Bash Programming

Linux Bash Programming


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Students learn to read, write, and debug shell scripts, thus increasing productivity by taking full advantage of the bash shell.



1. UNIX Processes
What is a Process?
Process Structure
The ps Utility
Options to the ps Utility
Background Commands (&)
Killing Background Processes
Redirecting the Standard Error

2. Getting Started
What is a Shell?
Running Scripts
Specifying the Script’s Interpreter
The PATH Environment Variable

3. Variables
Shell Variables
The read Command
The export Command
The Shell Environment
Parameter Expansion
Command Substitution

4. The Login Process
The Login Process
The System Profile Script
Your .bash_profile Script
The . Command

5. Conditional Statements
The Exit Status of Commands
Command Line Examples
The test Command
The if-then-else Construct
The elif Construct
case Statements

6. Loops
The for Loop
The while Loop
break and continue
Reading Lines From Files
Using Arrays with Loops

7. Special Variables
$$ - PID of Shell
Command-Line Arguments
$# - Number of Arguments
$* - All Arguments
The shift Command
The set Command
Getting Options

8. Quoting Mechanisms
Single vs. Double Quotes
What is a Here Document?
Using a Here Document
Here Document Quoting
Ignoring Leading Tabs

9. Functions
Shell Functions
Passing Arguments to Functions
Returning Values from Functions
Function Declarations

10. Advanced Programming
Shell Arithmetic
The select Statement
Terminal Independence in Scripts
The eval Command

11. Debugging Techniques
Using echo
Using Standard Error
Script Tracing
Options for Debugging
Conditional Debugging



Fundamentals of UNIX or Fundamentals of Linux



Linux or UNIX users, programmers, and system administrators.