buat bima

#!/bin/bashdict(){echo $username}usage() {echo "-f                        buat nampilin"echo "-u username               inisialisasi username"echo "-h                        showing help"}   if [ $# == 0 ]; thenecho "use -h to show usage"fi     while getopts "fu:h" opt; do        case $opt in                f) dict ;;                u) username="$OPTARG" ;;                h) usage ;;                \?) echo "Invalid option: -$OPTARG" >&2                    exit 1                    ;;                :) echo "Option -$OPTARG requires an argument." >&2                   exit 1                   ;;        esacdone