How to Add an Empty Line to a Text File from a Linux Shell Script

For nicer formatting, you may want to print an empty line from a script into a text file.

You can make an empty line in Linux with this command:

echo -en '\n'

Add >> file.txt to append it to a file:

echo -en '\n' >> file.txt

A plain echo "" >> file.txt does the same, because echo adds a newline by itself.