sudo systemctl status postgresql.service
  postgresql.service - PostgreSQL database server
   Loaded: loaded (/usr/lib/systemd/system/postgresql.service; disabled; vendor preset: disabled)
   Active: active (running) since Sun 2017-02-05 14:36:54 +03; 11s ago
  Process: 23542 ExecStart=/usr/bin/pg_ctl -s -D ${PGROOT}/data start -w -t 120 (code=exited, status=0/SUCCESS)
  Process: 23539 ExecStartPre=/usr/bin/postgresql-check-db-dir ${PGROOT}/data (code=exited, status=0/SUCCESS)
 Main PID: 23546 (postgres)
    Tasks: 6 (limit: 4915)
   CGroup: /system.slice/postgresql.service
           ├─23546 /usr/bin/postgres -D /var/lib/postgres/data
           ├─23548 postgres: checkpointer process   
           ├─23549 postgres: writer process   
           ├─23550 postgres: wal writer process   
           ├─23551 postgres: autovacuum launcher process   
           └─23552 postgres: stats collector process   

Feb 05 14:36:53 ihdesk systemd[1]: Starting PostgreSQL database server...
Feb 05 14:36:53 ihdesk postgres[23542]: LOG:  database system was shut down at 2017-02-05 14:32:50 +03
Feb 05 14:36:54 ihdesk postgres[23542]: LOG:  MultiXact member wraparound protections are now enabled
Feb 05 14:36:54 ihdesk postgres[23542]: LOG:  database system is ready to accept connections
Feb 05 14:36:54 ihdesk postgres[23542]: LOG:  autovacuum launcher started
Feb 05 14:36:54 ihdesk systemd[1]: Started PostgreSQL database server.