#!/bin/bash main_menu(){ PS3="Enter a number: " select bill in Electric Gas Internet Water do case "${REPLY}" in 1) xdg-open "https://aps.com" ;; 2) xdg-open "https://uesaz.com" ;; 3) xdg-open "https://sparklight.com" ;; 4) xdg-open "https://xpressbillpay.com/" ;; q) exit 0 ;; *) echo "Please choose an existing option" ;; esac done } case "${1}" in -e) xdg-open "https://aps.com" ;; -g) xdg-open "https://uesaz.com" ;; -i) xdg-open "https://sparklight.com" ;; -w) xdg-open "https://xpressbillpay.com/" ;; -h|--help|help) echo """ $0 [-e] [-g] [-i] [-w] -e Electric bill -g Gas bill -i Internet bill -w Water bill """ ;; *) main_menu ;; esac