可能不同的 ubuntu 版本方法不同，这里测试的版本为 ubuntu 18.04 以及 20.04；

    注意：这种方式不适合于浏览器，具有界面的程序的自启动。因为可能在运行对应脚本时，无线网络服务、界面程序需要的环境等还没有配置完毕。（如果不成功，可能需要从这个角度查找一下原因？）

    1、找到并打开 rc-local.service 文件

    1. sudo vim /etc/systemd/system/rc-local.service

    2、在原来文件中添加 [Install] 一栏

    1. #  SPDX-License-Identifier: LGPL-2.1+
    2. #
    3. #  This file is part of systemd.
    4. #
    5. #  systemd is free software; you can redistribute it and/or modify it
    6. #  under the terms of the GNU Lesser General Public License as published by
    7. #  the Free Software Foundation; either version 2.1 of the License, or
    8. #  (at your option) any later version.
    10. # This unit gets pulled automatically into multi-user.target by
    11. # systemd-rc-local-generator if /etc/rc.local is executable.
    12. [Install]
    13. WantedBy=multi-user.target
    14. Alias=rc-local.service
    16. [Unit]
    17. Description=/etc/rc.local Compatibility
    18. Documentation=man:systemd-rc-local-generator(8)
    19. ConditionFileIsExecutable=/etc/rc.local
    20. After=network.target
    22. [Service]
    23. Type=forking
    24. ExecStart=/etc/rc.local start
    25. TimeoutSec=0
    26. RemainAfterExit=yes
    27. GuessMainPID=no

    3、打开（创建）rc.local 文件

    1. sudo vim /etc/rc.local

    应该 rc.local 在对应目录中是有的，没有则需要新建

    4、编辑 rc.local 文件，在里面编写对应的 shell 命令

    1. #!/bin/sh -e
    2. #
    3. # rc.local
    4. #
    5. # This script is executed at the end of each multiuser runlevel.
    6. # Make sure that the script will "exit 0" on success or any other
    7. # value on error.
    8. #
    9. # In order to enable or disable this script just change the execution
    10. # bits.
    11. #
    12. # By default this script does nothing.
    13. cd /root/WebServer/presenterserver/
    14. echo $(pwd) >/usr/local/test.log
    15. nohup /usr/bin/python3 /root/WebServer/presenterserver/presenter_server.py --app body_pose  >/root/WebServer/presenterserver/cmd_out.log 2>&1 &
    16. exit 0

    5、设置 rc.local 可执行

    1. sudo chmod +x /etc/rc.local

    6、配置服务
    使能服务：

    1. sudo systemctl enable rc-local

    rc.local VS rc-local

    开始服务：

    1. sudo systemctl start rc-local.service

    检查服务状态

    1. sudo systemctl status rc-local.service

    image.png
    图1 服务已被激活
    7、重启电脑即可，开机自启动