在编译安装redis的时候，运行注册服务脚本sh install_server.sh时，报错。
Welcome to the redis service installer
This script will help you easily set up a running redis server
This systems seems to use systemd. Please take a look at the provided
example service unit files in this directory, and adapt and install
them. Sorry!
解决办法
编辑该脚本，注释掉下面部分代码，然后保存退出即可解决。
vim install_server.sh
