编写shell脚本,要求输入一个数字,然后计算出从1到输入数字的和,要求,如果输入的数字小于1,则重新输入,直到输入正确的数字为止;
#! /bin/bash
n=
0
while [
$n -lt "1" ];
do
read -p
"Please input a number, it must greater than "1":" n
done
sum=
0
for i
in `seq
1 $n`;
do
sum=$[
$i+
$sum]
done
echo $sum
转载:https://www.cnblogs.com/HondaHsu/p/4241798.html