Exibe data e hora do sistema

#!/bin/bash
# script para exibir a data e hora atuais
hh=$(date +%H)
clear
echo
echo "    ###############################"
echo 
data1=$(date "+%d de %B de %Y")
data2=$(date "+%H:%M:%S")
echo "    $data1"
echo "    hs $data2"
echo
case $hh in
0[0-9]|1[0-1]) echo "    Bom dia" ;;
1[2-7]) echo "    Boa Tarde" ;;
*) echo "     Boa Noite" ;;
esac
echo 
echo "    ###############################"
echo