bash case statement

gistfile1.txt

#!/bin/bash
# -- ********************************************************************************
# -- Description:  Example case statements
# -- Version:      0.1
# -- ********************************************************************************

case "$1" in
        hello)
                echo 'hello'
                ;;
        goodbye)
                echo 'goodbye'
                ;;
        *)
                echo "Invalid parameter (hello; goodbye;) Exiting."
                ;;
esac