echo text to file in sheel code example

Example 1: shell write multiple lines to file

#!/bin/bash

cat > /path/to/myfile <<EOL
write whatever youwant
with multiple lines
... 
EOL

Example 2: bash string to file

# syntax (note: the -e switch is to allow for backslash escapes)
echo -e "<string-to-append>" >> <file-to-append-to>

# example 
echo -e "Hello there, new line!" >> RandomWorld.txt

# -----------------------------------------------
# In order to see the effect of -e, append the following string:
"Hello there,\n new line!"