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rc.local

What rc.local Is Used For

rc.local is a traditional Linux startup script executed near the end of boot with root privileges. In this project, it is mainly useful for:

  • Bringing up routes or CAN interfaces at boot
  • Setting network priority
  • Running repeatable initialization commands before user login

Ubuntu 22.04 Notes

Ubuntu 22.04 does not enable rc.local by default. You need to create the file and enable the service manually.

Create /etc/rc.local

sudo touch /etc/rc.local
sudo chmod 755 /etc/rc.local
echo '#!/bin/bash' | sudo tee /etc/rc.local

Enable the rc-local Service

sudo cp /usr/lib/systemd/system/rc-local.service /etc/systemd/system/

Then edit:

sudoedit /etc/systemd/system/rc-local.service

Make sure the [Install] section contains:

[Install]
WantedBy=multi-user.target

Start and Enable the Service

sudo systemctl start rc-local
sudo systemctl enable rc-local
sudo systemctl status rc-local

If the status shows active (running), the service is available.

Add Your Boot-Time Commands

Edit:

sudoedit /etc/rc.local

Example:

#!/bin/bash
echo "System booting..."
# add your initialization commands here
exit 0

Make sure exit 0 is present at the end.

Typical Use Cases in This Project

  • Network priority adjustment for the MID360 NIC
  • Static route restoration after reboot
  • Chassis or arm CAN setup commands