hour

Advanced Bash&#8722 Scripting Guide An in&#8722 depth exploration of the art of shell scripting Me

#!/bin/sh
# Script name: hour
hour=1
until [ $hour  -gt 24 ]
do
    case "$hour" in
    [0-9] |1[0-1])	echo  "Good morning!"
	;;
    12)	echo  "Lunch time."
	;;
    1[3-7])	echo  "Siesta time."
	;;
    *)	echo  "Good night."
	;;
    esac
    hour=`expr $hour + 1`
done