How does the -n option affect the output of the cat command?

The -n option affects the output of the cat command by numbering every line of the displayed content. When you use this option, each line will be prefixed with its corresponding line number, starting from 1.

Effect on Output:

• Line Numbering: Each line in the output will have a number, making it easier to reference specific lines.

Example:

If you run the command:

cat -n filename.txt

And filename.txt contains:

Hello, World!
This is a test file.
It has multiple lines.

The output will be:

     1  Hello, World!
     2  This is a test file.
     3  It has multiple lines.

Summary:

The -n option enhances the readability of the output by clearly indicating the line numbers, which is particularly useful for longer files or when you need to refer to specific lines. If you have more questions or need further details, feel free to ask!