#!/usr/bin/ksh
# Script: example_menu.sh
# Descr:  Example of auto record advance(i.e. carriage return) with simple menu

function _choices
{ clear
  cat <<BOX

     HANDY INFO - Choose Desired Number
     ====================================
  1  Current Directory
  2  Your Login ID
  3  UNIX Processes for your ID
  4  Entry in /etc/passwd for your ID
  5  Users with ID of 0 (zero)
  6  Users with ID >= 500
  7  ID Search PATH for $LOGNAME
  8  Currently Mounted devices
  9  HD Usage and mount-points

  0  Exit

BOX
} # EOF  _choices()


function _action
{
  stty raw
  ans=`dd bs=1 count=1 2>/dev/null`
  eval $1='$ans'
  stty cooked
} # EOF  _action()


function _complog
{ # Required argument: $1 = output of logname command
  if [[ "${1}" != "${LOGNAME}" ]]
  then
    echo "\bYour Login ID is: \"${1}\" (real) and \"${LOGNAME}\" (su)."
  else
    echo "\bYour Login ID is: \"${1}\"."
  fi
} # EOF  _complog


function _waiter
{ echo "\nPress <Enter> to continue.... \c"
  read waiting4u
} # EOF  _waiter()


function _yourc
{
  case "${ans}" in  # process response
    1) echo "\bThe current directory is: \c"; pwd; _waiter ;;
    2) _complog "${user}"; _waiter ;;
    3) echo "\b\b"; ps -ef | grep "${user}" | more ; _waiter ;;
    4) echo "\b\b"; grep "${user}" /etc/passwd; _waiter ;;
    5) echo "\b\b"; awk -F":" '$3 == 0 {print $0}' /etc/passwd; _waiter;;
    6) echo "\b\b"; awk -F":" '$3 >= 500 {print $0}' /etc/passwd | more ; _waiter;;
    7) echo "\b\b"; echo $PATH | awk 'BEGIN {RS=":"} {print $0}'; _waiter;;
    8) echo "\b\b"; mount | awk '$1 != "none" {print $0}'; _waiter;;
    9) echo "\b\b"; df; _waiter ;;
    0) clear; exit 0 ;;  # breaks the loop
    *) echo " Invalid option...." ; _waiter ;;
  esac
} # EOF  _yourc()


user=`logname`
while :
do
  _choices          # display the menu
  _action _yourc    # gather user response
  _yourc
done