How to output a multiline string in Bash?

Question

How can I output a multipline string in Bash without using multiple echo calls like so:

echo \"usage: up [--level | -n ][--help][--version         


        

Answer 1

Here documents are often used for this purpose.

cat << EOF
usage: up [--level | -n ][--help][--version]

Report bugs to: 
up home page:
EOF

They are supported in all Bourne-derived shells including all versions of Bash.