tellme

UNIX+shell范例精解（第4版）代码

#!/bin/sh
# Scriptname: tellme
echo -n "How old are you? "
read age
if  [  $age -lt  0 -o $age -gt 120 ]
then
	echo  "Welcome to our planet! "
	exit 1   
fi
if [ $age -ge 0 -a  $age -lt 13 ]
then
	echo "A child is a garden of verses"
elif [ $age -ge 12 -a $age -lt  20 ]
then
	echo "Rebel without a cause"
elif [ $age  -gt 20 -a  $age -lt  30 ]
then
	echo "You got the world by the tail!!"
elif [ $age -ge  30 -a  $age -lt 40 ]
then
	echo "Thirty something..."
else
	echo "Sorry I asked"
fi