writing a bashscript code example

Example 1: shell file in linux

#!/bin/sh
ls

Example 2: bash write

# 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, use the following string:
# "Hello there,\n new line!"