sudo vi /etc/systemd/system/rc-local.service

写入以下内容：

#  SPDX-License-Identifier: LGPL-2.1+
#
#  This file is part of systemd.
#
#  systemd is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as publishe
d by#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.# This unit gets pulled automatically into multi-user.target by
# systemd-rc-local-generator if /etc/rc.local is executable.
[Unit]
Description=/etc/rc.local Compatibility
Documentation=man:systemd-rc-local-generator(8)
ConditionFileIsExecutable=/etc/rc.local
After=network.target[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
GuessMainPID=no

sudo vi /etc/rc.local

#!/bin/bash
#
# 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.#your shell
#excample:/scu/autorun.shexit 0

其中，/scu/autorun.sh就是我需要运行的脚本

更改权限：

sudo chmod 775 /etc/rc.local

开启服务：

sudo systemctl enable rc-local

sudo systemctl start rc-local.service

链接：

sudo ln -fs /lib/systemd/system/rc-local.service /etc/systemd/system/rc-local.service

重启电脑查看：

sudo reboot

观察成功