getopts-demo.sh

#!/bin/bash

# Example:
# ./getopts-demo.sh -a42 -l Beeblebrox -c "Sector ZZ9 Plural Z Alpha" -f Zaphod

if [[ -z $1 ]]
then
  echo 'Usage: ./getopts-demo.sh -f <first name> -l <last name> -a <age> -g <gender> -c <country>'
  exit 1
fi

while getopts ":f:l:a:g:c:" option
do
  echo "option: ${option}"
  echo "OPTIND: ${OPTIND}"
  echo "OPTARG: ${OPTARG}"

  case ${option} in
    f ) echo "First name: ${OPTARG}"
        ;;
    l ) echo "Last name: ${OPTARG}"
        ;;
    a ) echo "Age: ${OPTARG}"
        ;;
    g ) echo "Gender: ${OPTARG}"
        ;;
    c ) echo "Country: ${OPTARG}"
        ;;
  esac
done