How to run a command on boot or startup in Ubuntu.

https://linuxvox.com/blog/automatically-run-a-program-on-startup-under-linux-ubuntu/

We start by creating a .sh file in /usr/bin/mycommand.sh

 

Enter the following text in it.

#!/bin/sh

sudo ip  route add 10.30.24.0/24 via  192.168.0.1 dev eth0 onlink

Creating a new service:

sudo nano /etc/systemd/system/mycommand.service # create new service file

Enter the following text in it.

[Unit]

Description=Add route command

After=network.target

[Service]

Type=oneshot

ExecStart=/bin/bash /usr/bin/mycommand.sh

User=root #running as root user

Restart=never # do not restart the service if it fails

[Install]

WantedBy=multi-user.target

Starting the service:

sudo systemctl daemon-reload # reload the system daemon

sudo systemctl start mycommand.service # to start without rebooting for testing

sudo systemctl status mycommand.service # to verify status of service.

sudo systemctl enable mycommand.service # enable the service to run at startup

Removing a systemdservice

Sudo systemctl stop mycommand.service # stop the service

Sudo systemctl disable mycommand.service # disable the service

Sudo rm /ect/systemd/system/mycommand.service