#!/bin/bash
#用户名为 tom 并且密码为 123456,则提示登录成功,否则提示登录失败
read -p "请输入用户名:" user
read -p "请输入密码:" pass
if [ "$user" == ‘tom‘ -a "$pass" == ‘123456‘ ];then
echo "Login successful"
else
echo "Login Failed"
fi
原文：https://www.cnblogs.com/luwei0915/p/10516629.html