grade_evaluate2.sh

《linux应用开发技术详解》的配套代码

#!/bin/sh
# Usage: ./grade_evaluate2 grade
# grade should be between 0 and 100, including 0 and 100
if [ '$1' –lt '0' ]
then
	echo 'Error: invalid grade'
elif [ '$1' –lt '60' ]
then
	echo 'no pass'
elif [ '$1' –lt '70' ]
then
	echo 'pass'
elif [ '$1'–lt '80' ]
then
	echo 'good'
elif [ '$1' –le '100' ]
then
	echo 'excellent'
else
	echo 'Error: invalid grade'
fi