shell Script

#!/bin/bash

# assign variables
ACTION=${1}

function create_file() {

touch "${1}-54321"
}

function display_help() {

cat << EOF
Usage: ${0} {-c|--create|-h|--help} <filename>

OPTIONS:
	-c | --create   Create a new file
	-h | --help	Display the command help

Examples:
	Create a new file:
		$ ${0} -c foo.txt

	Display help:
		$ ${0} -h

EOF
}

case "$ACTION" in
	-h|--help)
		display_help
		;;
	-c|--create)
		create_file "${2:-server}"
		;;
	*)
	echo "Usage ${0} {-c|-h}"
	exit 1
esac