The article provides an in-depth exploration of systemd, a modern init system in Linux that replaces older shell script-based init processes, offering enhanced performance and streamlined service management. Systemd functions as a suite of tools that manage system processes and services, referred to as units, through configuration files that define their behavior, dependencies, and startup conditions. The tutorial illustrates how to set up a simple Go program to run as a background service managed by systemd, ensuring its restart upon failure or system boot. It delves into the Linux boot process, the structure of systemd units, and the use of systemctl and journalctl commands for managing and monitoring system processes. The article also touches on the resilience of systemd against termination signals and provides practical steps for creating and managing custom systemd unit files. Overall, it serves as a comprehensive guide for understanding and utilizing systemd in Linux environments.