【Shell学堂】数学运算相关脚本

1.输出1-100之间的所有数字

#!/bin/bash
for i in {1..100}
do
echo "$i"
done
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2.计算1-100所有数的和

#!/bin/bash
sum=0
for i in {1..100}
do
let sum=$sum+$i
done
echo $sum
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3.计算1-100所有偶数的和

#!/bin/bash
sum=0
for i in {2..100..2}
do
let sum=$sum+$i
done
echo $sum
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4.输出1-100之间可被3整除的数

#!/bin/bash
for i in {1..100}
do
if [ `echo "$i%3"|bc` -eq 0 ]
then
echo -n \ "$i"
fi
done
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5.输出1-100的阶乘

#!/bin/bash
fact=1
for i in {1..100}
do
fact=$(echo "$fact*$i"|bc)
done
echo $fact

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