Systemd Services Create, manage, and monitor systemd services and timers. Covers unit file authoring, dependency management, socket activation, resource limits, journalctl log analysis, and production hardening. When to Use - Deploying an application as a managed background service - Replacing cron jobs with systemd timers for better logging and dependency control - Setting up socket activation for on-demand service startup - Configuring resource limits (CPU, memory, I/O) for services - Debugging service startup failures and runtime crashes - Managing service dependencies and ordering Prerequ…