Hello vonh,
postgresql is not a typical desktop application. We do neither deliver nor support it officially
and I will move this topic to another category eventually.
For configuration options please refer to
https://wiki.debian.org/PostgreSqlI successfully installed the postgresql metapackage, which always depends on the currently supported PostgreSQL database server version and its client. The currently supported version is postgresql-9.4.
root@sidbox:~# dpkg -L postgresql-9.4 | grep bin
[...]
/usr/lib/postgresql/9.4/bin/postgres
root@sidbox:~# systemctl status postgresql
● postgresql.service - PostgreSQL RDBMS
Loaded: loaded (/lib/systemd/system/postgresql.service; enabled; vendor preset: enabled)
Active: active (exited) since Fri 2015-11-06 13:22:12 CET; 7min ago
Main PID: 407 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/postgresql.service
Nov 06 13:22:12 sidbox systemd[1]: Starting PostgreSQL RDBMS...
Nov 06 13:22:12 sidbox systemd[1]: Started PostgreSQL RDBMS.
Nov 06 13:22:20 sidbox systemd[1]: Started PostgreSQL RDBMS.
greetings
musca