grade_evaluate.sh

《linux应用开发技术详解》的配套代码

#!/bin/sh
# Usage: ./grade_evaluate 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