在程序部署中，我们会遇到某些软件并没有附加到系统服务中，无法通过systemctl或者service来控制开机自启，所以一些脚本中，我都是推荐添加启动命令到 /etc/rc.local 文件中，但是 Debian 9非常奇葩， 默认不带 /etc/rc.local 文件，但是却没阉割掉rc.local 服务，所以我们需要补齐缺失的文件。
创建服务：
cat > /etc/systemd/system/rc-local.service <
因为rc.local文件丢失，我们需要手工添加一个 /etc/rc.local文件：
#!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. exit 0
或者执行快速添加脚本：
echo " #!/bin/sh -e # # rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing. exit 0 " > /etc/rc.local
然后赋予权限：
chmod +x /etc/rc.local
接着启动 rc-local 服务：
systemctl start rc-local.service
将 rc-local 加入开机自启：
systemctl enable rc-local
测试服务是否正常：
systemctl status rc-local.service
将需要开机自动启动的脚本放在/etc/rc.local 中exit 0 之前，就可以开机自动执行了。
个人感觉，不是debian奇葩，是因为debian遵循等级配置，部署到相应rcx目录下！求大虾莫拍砖！