1-100内所有的整数的和:

#!/bin/bash x=0 for i in {1..100} do let x+=i done echo $x

1-100一内所有偶数的和:

#!/bin/bash

num=0 for i in {1..100} do a=$[i%2] if [ $a -eq 0 ];then let num=$num+$i fi done echo $num