Ubuntu18.10配置rc.local自启动

Ubuntu新版本中已经不使用rc.local这种自启动方式了，熟悉旧版本的同学肯定是很不习惯的。那么新版本中如何配置rc.local呢。

1. 自行创建 /etc/rc.local 添加以下默认内容

   #!/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

2. 在 exit 0 之前加入自定义内容

3. 执行以下命令确保 rc.local 开机自启

   sudo chown root:root /etc/rc.local
   sudo chmod 755 /etc/rc.local
   sudo systemctl enable rc-local.service