Shell的输入输出

通过使用read命令，可以实现从终端中输入内容后输出或执行运算

#!/bin/bash
#Author: blacksonny
#Copyright (c)
#Script follows here:

echo "How old are you?"
read age
echo "age is " $age

以上代码会首先输出一个 [How old are yoy？]，这时终端等待输入，当我们输入18这个数字(会将18赋值给age)并键入回车后，屏幕输出结果为age is 18

如下运行结果：

kk@kk-pc ~/shell
$ sh ./inout.sh
How old are you?
18
age is  18