Can you give more `awk` examples?

Certainly! Here are some common awk examples that demonstrate its versatility in text processing:

Print Specific Columns:
```
awk '{print $1, $3}' file.txt
```
This command prints the first and third columns of each line in file.txt.
Using a Delimiter:
```
awk -F',' '{print $1, $2}' file.csv
```
This command uses a comma as a delimiter and prints the first and second columns from a CSV file.
Conditional Printing:
```
awk '$3 > 50 {print $1, $3}' file.txt
```
This command prints the first and third columns of lines where the value in the third column is greater than 50.
Counting Lines:
```
awk 'END {print NR}' file.txt
```
This command counts the total number of lines in file.txt and prints the count.
Calculating the Sum of a Column:
```
awk '{sum += $2} END {print sum}' file.txt
```
This command calculates the sum of the values in the second column and prints the result.
Finding the Average of a Column:
```
awk '{sum += $2; count++} END {print sum/count}' file.txt
```
This command calculates the average of the values in the second column.
Formatting Output:
```
awk '{printf "Name: %s, Age: %d\n", $1, $2}' file.txt
```
This command formats the output to display names and ages in a specific format.
Replacing Text:
```
awk '{gsub(/old_text/, "new_text"); print}' file.txt
```
This command replaces all occurrences of "old_text" with "new_text" in file.txt and prints the modified lines.

These examples illustrate how awk can be used for a variety of text processing tasks, making it a powerful tool for data manipulation in the command line.