Linux Shell Scripting Training

Linux Command Review:

Basic Linux commands
General commands
File and directory handling commands
Filename generation characters
I/O Redirection features
Other commands

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

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

Integer Arithmetic:

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

Handling Run-Time Data:

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

Condition Execution:

The if statement
The test command
Other test notations
Default and substitute variables
Exit status codes
Exercise: Adding validation to previous scripts

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 guess-the-number game

Multi-Branch Decisions:

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

Functions:

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

Interrupt Handling:

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

Additional Features and Facilities:

The exec commands
The includes notation
More about loops
Arrays
Here Documents
Exercise: Create a here script

Redirection, Pipes and Filters:

Standard I/O and redirection
Pipes
Command separation
Conditional execution
Grouping Commands
LINUX filters
The tee command

Backup and Restore Utilities:

Archive devices
The cpio command
The tar command
The dd command

Background Job Scheduling:

Starting background jobs
Background tasks and the nohup command
Process priorities and the nice command
Job control
Scheduling jobs with the at the command
Scheduling jobs with the cron command

Regular Expression Notation:

Regular expressions
Extended regular expressions

Searching Files for Patterns:

The grep family of commands
The grep command
The fgrep command
The egrep command

The Stream Editor - sed:

Introduction and command line syntax
The sed program structure
sed program processing
Use sed commands
sed addresses
sed instructions
Hold and get functions>/div>
Advanced flow control

Commands for Comparing Files:

Compare two files with the cmp command
Compare two files with the comm command
Compare two files with the diff and sdiff commands
Compare large files with the bdiff command

File Manipulation Commands:

The file command
The head command
The tail command
The cut command
The paste command
The pr command
The split and csplit commands

Identify and Translate Characters:

od - octal dump
Use cat to display non-printing characters
The expand and unexpand commands
The tr command

Sorting Files:

The sort command
Specify sort keys with –k
Sort by column positions
The uniq command

Introduction to the Pattern Scanning Utility - awk:

Introduction and command line syntax
The awk program structure
Use regular expressions
Operators
Simple patterns
Extended patterns
Comments
Special patterns (BEGIN and END)
Program variables
Built-in variables
User defined variables
Mathematical operators
Enhanced printing
Handling user variables

awk Program Control Structures:

Program control structures
The if construct
The while and do ... while constructs
The basic for construct
Associative array handling
Functions
Built in functions
The system function
The getline function
User defined functions

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