Shell Scripting, SED and AWK

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Shell Scripting, SED and AWK Preview

Introduction to Shell Script Preview
A Simple Shell Script Preview
Variables
Demo of Variable
I/O Redirection
Pipe
Filename Substitution
Single Quote, Double Quote, Backslash
Command Substitution
Integer Arithmetic
expr Command

Exit Status
if...then Statement
test Command
Testing Integer Comparison
Testing Strings
Testing Files
Testing Logical Negation
Testing Logical OR (-o)
Testing Logical AND (-a)
&& and || for Combined Test
Do Nothing or Null command
if...then...else Statement
Nested If
Another Syntax for Nested if (if...elif)
Double Parentheses
Double Square Brackets
exit Command
case Command

for Command
Reading a File
Another Syntax of for Command
while Command
until Command
Nested Loop
Redirection of Loop Output
break Command
continue Command

Command Line Arguments
$# variable
$* variable
$@ variable
shift Command

What is Function
return Command
Getting Output From Function
Function Parameters
Variables in function

Array
Array and Function

Introduction to sed
-e option (multiple commands), -f option (commands in file)
s command, Substitute command
Address
Address for multiple commands
d command, Delete command
i and a command, insert and append command

Introduction to awk
Multiple action/commands
-f Option, program in file
-F Option, field separator
Variables and Data Field Variables
BEGIN and END