#!/bin/bash
# menu interface to simple commands
echo -e "\n      COMMAND MENU\n"
echo " a. Current date and time"
echo " b. Users currently logged in"
echo " c. Name of the working directory"
echo -e " d. Contents of the working directory\n"
echo -n "Enter a, b, c, or d: "
read answer
echo
#
case "$answer" in
    a)
       date
       ;;
    b)
       who
       ;;
    c)
       pwd
       ;;
    d)
       ls
       ;;
    *)
       echo "There is no selection: $answer"
       ;;
esac