bash script bootstrap

new-bash.sh

#!/bin/bash

usage="$(basename "$0") [-h --help] [-v A_VALUE] -- bash script description

where:
    -h or --help            shows this help text"

optspec=":-:"
while getopts "$optspec" optchar; do
case "${OPTARG}" in
   h|help)
      echo "$usage"
      exit 1
      ;;
   v)
      value="${!OPTIND}"; OPTIND=$(( $OPTIND + 1 ))
      YOUR_VALUE=${value}
      ;;
esac
done

CURRENT_DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
cd ${CURRENT_DIR}

#Your code...