Linux Service Management: Starting, Stopping, and Checking Status

Linux services are background-running programs with specific functionalities. Managing services is fundamental to system operations and requires administrative privileges (e.g., `$ sudo`). Core operations are implemented via the `systemctl` command: `systemctl status [service_name]` checks the status (e.g., `active (running)`); `start/stop/restart` are used to start, stop, and restart services respectively; `list-units --type=service` lists all services, and `is-active [service_name]` quickly determines the running status. For enabling/disabling services at boot, use `enable/disable`, and verify with `is-enabled`. When services fail, `journalctl -u [service_name]` checks logs (e.g., port conflicts, configuration errors). Mastering these commands fulfills most service management requirements.