# systemd

This tool is used for managing services (units).

Service/Daemon is an on-going process that provides a service, usually designed to interact with something outside of it. Ex. web server, monitoring tool, database...

# systemctl

Manages services.

systemctl <command> <service> - Format.

status - Shows the status and last lines of log.
start - Starts a service.
stop - Stops a service.

enable - Enable start on BOOT.
disable - Disable start on BOOT.

reload - Re-read the configuration files.
restart - Restart the service and re-read config files.

# journalctl

Manages logs.

journalctl -u SERVICE - Log from a service.
journalctl --since "10 min ago" - Log from last 10 minutes.