shell

很久没玩shell了，可是现实中又不能不用，下面经过简单的shell脚原本计算成绩，好了，贴代码

#!/bin/bash
cat << EOF
++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|           Welcome to Results test shell                                              |
|                                                      |
++++++++++++++++++++++++++++++++++++++++++++++++++++++++
EOF
read -p "Please put your Chinese Results : " x
read -p "Please put your Mathematics Results : " y
read -p "Please put your English Results : " z
sum=$[$x+$y+$z]
echo "This is your total Results:$sum"
##上面代码只是计算x,y,z的变量求和。好了,继续##
if (($sum < 230));then
echo "You didn't passed the exam,please hardly in the next time."
else
echo "Greate,you passed the exam."
fi
########上面的if语句就是判断$sum求和值的大小，而后输出###########