What does the $ symbol represent in the output of the `cat -E` command?

In the output of the cat -E command, the $ symbol represents the end of each line. When you use the -E option, cat appends a dollar sign at the end of every line of output, making it clear where each line terminates.

Purpose:

• Line Ending Indicator: The $ helps to visually indicate the end of a line, which can be particularly useful for identifying trailing spaces or confirming line endings in the text.

Example:

If you run:

cat -E filename.txt

And filename.txt contains:

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

The output will be:

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

Summary:

The $ symbol serves as a clear marker for the end of each line, enhancing readability and helping to troubleshoot formatting issues. If you have more questions or need further clarification, feel free to ask!