service template

[Unit]
Description=Chat Server Service
After=network.target

[Service]
Type=simple
ExecStart=/bin/bash /home/ankush/chat_server/start.sh

[Install]
WantedBy=multi-user.target

• systemctl daemon-reload
• systemctl start chat_server

Reference link

• https://geekflare.com/systemd-start-services-linux-7/
• https://www.linode.com/docs/quick-answers/linux/start-service-at-boot/