shellScript之if_elif_else语句

#!/bin/bashecho "Please input the score between(0-100):"read scoreif [ "$score" -ge 90 ];then    echo "The grade is A ~"elif [ "$score" -ge 80 ];then    echo "The grade is B~"elif [ "$score" -ge 70 ];then    echo "The grade is C ~"elif [ "$score" -ge 60 ];then    echo "The grade is D ~"else    echo "The grade is E~"fi

结果：

~/Note/test # ./3if_elif_else.sh Please input the score between(0-100):90The grade is A ~~/Note/test # ./3if_elif_else.sh Please input the score between(0-100):80The grade is B~~/Note/test # ./3if_elif_else.sh Please input the score between(0-100):70The grade is C ~~/Note/test # ./3if_elif_else.sh Please input the score between(0-100):60The grade is D ~~/Note/test # ./3if_elif_else.sh Please input the score between(0-100):50The grade is E