Certain Linux distributions that use SystemD such as Ubuntu 20.04 may not allow you to run /etc/rc.local when the system is booting. In this tutorial we will go through how to enable /etc/rc.local with systemd during system boot on Ubuntu 20.04.
Procedure to setup /etc/rc.local with systemd on Ubuntu 20.04
Check the current status of rc-local service
sudo systemctl status rc-local
Enable rc.local service
Enable /etc/rc.local to run on system boot using the command
sudo systemctl enable rc-local
As you may have already read, it is not possible to enable rc.local at startup using SystemD on Ubuntu 20.04. Therefore we have to do this another way.
Manually create a systemd service
We will need to manually create a SystemD service which will start at system boot.
sudo vi /etc/systemd/system/rc-local.service
Now enter the following text, save and close the file.
[Unit]
Description=/etc/rc.local Compatibility
ConditionPathExists=/etc/rc.local
[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
StandardOutput=tty
RemainAfterExit=yes
SysVStartPriority=99
[Install]
WantedBy=multi-user.target
Create and Edit rc.local file
Now we will need to edit the /etc/rc.local file. Issue the following command and press Enter
sudo vi /etc/rc.local
Paste in the following, this ensures that the script is bash executable, all bash scripts shoul have this at the top
#!/bin/bash
save and close the file.
We will now need to append permissions to make the newly created file executable. Issue the following command and press Enter
sudo chmod +x /etc/rc.local
Enable the service on boot (enable rc.local with systemd on Ubuntu 20.04)
After that, enable the service on system boot
sudo systemctl enable rc-local
Now let’s reboot the system and check if the rc-local SystemD service is working.
When your system has booted up again, issue the following command
sudo systemctl status rc-local
Enabling /etc/rc.local with systemd is completed on Ubuntu 20.04 startup.
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