#!/bin/bash# Crude address databaseclear # Clear the screen.echo "          Contact List"echo "          ------- ----"echo "Choose one of the following persons:" echoecho "[E]vans, Roland"echo "[J]ones, Mildred"echo "[S]mith, Julie"echo "[Z]ane, Morris"echoread personcase "$person" in# Note variable is quoted.  "E" | "e" )  # Accept upper or lowercase input.  echo  echo "Roland Evans"  echo "4321 Floppy Dr."  echo "Hardscrabble, CO 80753"  echo "(303) 734-9874"  echo "(303) 734-9892 fax"  echo "revans@zzy.net"  echo "Business partner & old friend"  ;;# Note double semicolon to terminate each option.  "J" | "j" )  echo  echo "Mildred Jones"  echo "249 E. 7th St., Apt. 19"  echo "New York, NY 10009"  echo "(212) 533-2814"  echo "(212) 533-9972 fax"  echo "milliej@loisaida.com"  echo "Ex-girlfriend"  echo "Birthday: Feb. 11"  ;;# Add info for Smith & Zane later.          * )   # Default option.	     # Empty input (hitting RETURN) fits here, too.   echo   echo "Not yet in database."  ;;esacecho#  Exercise:#  --------#  Change the script so it accepts multiple inputs,#+ instead of terminating after displaying just one address.exit 0