自动交互安装服务应用，以redis为例

#!/bin/bash
#新建preinstall.sh文件，该文件完成安装前的准备
yum install gcc gcc-* wget expect -y    #expect是因为后面我们用到，安装后可用来检测内容进行自动交互输入
mkdir  -p /software/redis
mkdir -p /opt/redis
mkdir -p /opt/redis/data/6379
mkdir -p /opt/redis/log
touch /opt/redis/log/redis_6379.log
cd /software/redis/
wget http://download.redis.io/releases/redis-4.0.9.tar.gz
tar -zxvf redis-4.0.9.tar.gz  -C /opt/redis
cd /opt/redis/redis-4.0.9
make  MALLOC=libc
cd /opt/redis/redis-4.0.9/src
make install

开始安装

#!/usr/bin/expect
#新建startinstall.sh文件，该文件开始正式安装，其中
是指回车
spawn /opt/redis/redis-4.0.9/utils/install_server.sh    #需要这样写，否则可能识别不出路径
#等待this instance出现，最好在前后也加上*，如下
expect "*this instance*"
#上面的内容出来后就可以自动输入6379了

send "6379
"
expect "*config file name*"
send "/etc/redis/6379.conf
"
expect "*log file name*"
send "/opt/redis/log/redis_6379.log
"
expect "*this instance*"
send "/opt/redis/data/6379
"
expect "*path*"
send "/usr/local/bin/redis-server
"
#这里也要检测ENTER
expect "*ENTER*"  
#回车
send "
"
#最好是检测到这个安装成功后再expect eof

expect "Installation successful!"
expect eof

至此，redis已经算是安装好了执行/etc/init.d/redis_6379 start即可开启服务