How to use `cat` command?

The cat command is used to display the contents of a file in the terminal. Here’s how to use it:

Basic Usage

To display the contents of a file, use the following command:

cat filename.txt

Example

If you have a file named example.txt, you can view its contents by running:

cat example.txt

Redirecting Output

You can also redirect the output to another file using the > operator. For example, to save the contents of example.txt to a new file named output.txt, use:

cat example.txt > output.txt

Viewing Multiple Files

You can display the contents of multiple files at once:

cat file1.txt file2.txt

Adding Line Numbers

To display the contents with line numbers, use the -n option:

cat -n example.txt

These are some basic usages of the cat command. You can explore more options by checking the manual page with:

man cat