shell脚本中，为啥不论输入什么，都只输出第四句

Question

Answer 1

你这写的有问题，估计你是没有理解 字符比较与变量赋值的区别，最大的区别就是：

1. 字符比较，== 两边必须要有空格
2. 变量赋值，刚刚好相反，两边都不能有空格

#!/bin/bash

read -p "please input(y/n):" value

if [ "$value" == "y" ] || [ "$value" == "Y" ];then
  echo "your input is y"
  exit 0
elif [ "$value" == "n" ] || [ "$value" == "N" ];then
  echo "your input is: $value"
  exit 0
else
  echo "your input is: $value"
  echo "your input can't identify"
fi