#!/bin/bash
#  greetings.sh - examines date, presents greeting - john - 21 June 2007
#
hour=`date +%H`
 
if [[ $hour -ge 1 && $hour -le 11 ]]
        then
           greeting="Guten Morgen!"
        elif [[ $hour -ge 12 && $hour -le 17 ]]
        then
           greeting="Guten Tag!"
        else
           greeting="Guten Aben!"
        fi
echo $greeting