systemd Startup Script

my_service.service

[Unit]
Description=<description>

[Service]
Type=<type:forking,oneshot...>
User=<user>
WorkingDirectory=<absolute path to working directory>
Environment=<environment variable>
ExecStart=/bin/bash <script to run on start>
ExecStop=/bin/bash <script to run on stop>
ExecReload=/bin/bash <script to run on reload>
Restart=<restart:on-failure,always...>

[Install]
WantedBy=multi-user.target

systemctl commands

sudo systemctl daemon-reload

sudo systemctl enable my_service.service
sudo systemctl disable my_service.service

sudo systemctl start my_service.service
sudo systemctl stop my_service.service
sudo systemctl restart my_service.service
sudo systemctl reload my_service.service