ubuntu19.10如何添加开机启动项

$sudo vi /lib/systemd/system/rc-local.service
内容如下
[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
[Install]
WantedBy=multi-user.target
Alias=rc-local.service

$sudo vi /etc/rc.local
内容如下
#!/bin/bash
echo "看到这行字，说明添加自启动脚本成功。" > /usr/local/test.log
exit 0

$sudo chmod +x /etc/rc.local

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

$sudo systemctl enable rc-local

$sudo systemctl start rc-local

$sudo reboot now

没问题的话看一下 /usr/local/test.log的内容，正确就是工作正常了。