#!/bin/bash
n=0
while [ $n -lt 1 ]
do
read "please input a number ,it must greater than "1":" n
done
sum=0
for i in `seq 1 $n`
sum=$[$i+$sum]
echo $sum
本文轉自 15816815732 51CTO部落格，原文連結:http://blog.51cto.com/68686789/1690636
#!/bin/bash
n=0
while [ $n -lt 1 ]
do
read "please input a number ,it must greater than "1":" n
done
sum=0
for i in `seq 1 $n`
sum=$[$i+$sum]
echo $sum
本文轉自 15816815732 51CTO部落格，原文連結:http://blog.51cto.com/68686789/1690636
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