bash脚本编程之算术运算：加减乘除

编写shell脚本

vim 6.sh

回车

a或i 进入编辑

#! /bin/bash

read -p "input number: " a

read -p "input number: " b

echo ‘ a + a+ a+b=’ ( ( a + b ) ) e c h o ′ ((a+b)) echo ' ((a+b))echo′a-$b=’ ( ( a − b ) ) e c h o ′ ((a-b)) echo ' ((a−b))echo′a*$b=’ ( ( a ∗ b ) ) e c h o ′ ((a*b)) echo ' ((a∗b))echo′a/$b=’ $((a/b))

Esc

:wq

演示效果如下：