what is the ls option to list entries by lines instead of by columns

Answer 1

Are you talking about the ls command from linux? if so, you can use ls -l.
And when in doubts, use ls --help to see the help files.
When asking a question, make sure you are using the right tags to help identify the subject of your question, a single question mark is not clear and can lead to confusion.

Answer 2

Specify the language by using relevant tags