To display some pre-formatted text onto screen, we need the following 2 capabilities:
There are 2 ways to construct multiple line strings:
String Literal12345text = "First LineSecond LineThird Line"
cat123456text = $(cat << EOFFirst LineSecond LineThird LineEOF)
For some reason,
echo command will eat all the line break in the text, so we should use printf instead of echo.
And printf supports back-slash-escape, so we can use
\n to print a new-line on screen.