Updated AWK sheet.

awk.md

@@ -38,54 +38,62 @@ awk '$1 > 10 {print}' filename
 
 ## Patterns and Actions
 
+### Pattern with Action
 ```awk
-# Pattern with Action
 pattern1 { action1 }
+```
+```awk
 pattern2 { action2 }
 ```
 
 ## Variables
 
+### Assigning Variables
 ```awk
-# Assigning Variables
 variable = value
-
+```
-# Accessing Variables
+### Accessing Variables
+```awk
 print variable
 ```
 
 ## Operators
 
+### Arithmetic Operators
 ```awk
-# Arithmetic Operators
 +, -, *, /, %
+```
 
-# Relational Operators
+### Relational Operators
+```awk
 ==, !=, >, <, >=, <=
+```
 
-# Logical Operators
+### Logical Operators
+```awk
 &&, ||
 ```
 
 ## Built-in Variables
-
+### NR: Record Number
 ```awk
-# NR: Record Number
 NR > 1 {print "Line Number: " NR}
-
+```
-# NF: Number of Fields
+### NF: Number of Fields
+```awk
 {print "Number of Fields: " NF}
 ```
 
 ## Control Structures
 
+### if Statement
 ```awk
-# if Statement
 if (condition) {
     # Commands
 }
-
+```
-# if-else Statement
+### if-else Statement
+```awk
 if (condition) {
     # Commands for true condition
 } else {
@@ -95,8 +103,8 @@ if (condition) {
 
 ## Functions
 
+### Built-in Functions
 ```awk
-# Built-in Functions
 {
     result = sqrt(9)
     print "Square Root: " result
@@ -106,14 +114,12 @@ if (condition) {
 ## Text Processing
 
 ### Field Separator
-
 ```awk
 # Change Field Separator
 awk -F',' '{print $2}' filename
 ```
 
 ### Output Formatting
-
 ```awk
 # Formatting Output
 awk '{printf "Name: %-10s Age: %d\n", $1, $2}' filename
@@ -121,38 +127,40 @@ awk '{printf "Name: %-10s Age: %d\n", $1, $2}' filename
 
 ## Regular Expressions
 
+### Match Pattern
 ```awk
-# Match Pattern
 awk '/pattern/ {print}' filename
 ```
 
 ## Arrays
 
+### Declare an Array
 ```awk
-# Declare an Array
 array[1] = "apple"
 array[2] = "banana"
-
+```
-# Access Array Element
+### Access Array Element
+```awk
 print array[1]
 ```
 
 ## User-Defined Functions
 
+### Define a Function
 ```awk
-# Define a Function
 function my_function(parameter) {
     # Commands
 }
-
+```
-# Call the Function
+### Call the Function
+```awk
 my_function(value)
 ```
 
 ## Command Execution
 
+### Execute Command
 ```awk
-# Execute Command
 awk '{cmd = "echo " $1; system(cmd)}' filename
 ```