systemctl status postgresql
● postgresql.service - LSB: PostgreSQL RDBMS server
   Loaded: loaded (/etc/init.d/postgresql; bad; vendor preset: enabled)
   Active: active (exited) since czw 2016-12-01 10:56:59 CET; 24min ago
     Docs: man:systemd-sysv-generator(8)
 Main PID: 4847 (code=exited, status=0/SUCCESS)
   CGroup: /system.slice/postgresql.service