26.What is the primary purpose of 'awk'?

The primary purpose of 'awk' is text processing. It is a scripting language used for manipulating data and generating reports. The awk command programming language requires no compiling, and allows the user to use variables, numeric functions, string functions, and logical operators.

Here are the steps to use 'awk':

1. Open your terminal.
2. Type awk followed by the condition or action within single quotes. For example, awk '{print}' filename will print the contents of the file.
3. Press Enter to execute the command.

'awk' is a powerful tool that can be used to read, write, and manipulate data in a variety of formats, and it's particularly useful for producing formatted reports.