#!/bin/bash

# using dialog to create a menu

temp=`mktemp -t test.XXXXXX`
temp2=`mktemp -t test2.XXXXXX`

function diskspace {
	df -k > $temp
	dialog --textbox $temp 20 60
}

function whoseon {
	who > $temp
	dialog --textbox $temp 20 50
}

function menusage {
	cat /proc/meminfo > $temp
	dialog --textbox $temp 20 50
}

while [ 1 ]
do
	dialog --menu "Sys Admin Menu" 20 30 10 1 "Display disk space" 2 "Display users" 3 "Display memory usage" 0 "Exit" 2> $temp2
	if [ $? -eq 1 ]
	then
		break
	fi

	selection=`cat $temp2`

	case $selection in
	1)
		diskspace;;
	2)
		whoseon;;
	3)
		menusage;;
	0)
		break;;
	*)
		dialog --msgbox "Sorry,invalid selection" 10 30
	esac
done
rm -f $temp 2> /dev/null
rm -f $temp2 2> /dev/null