Owner@gabriel /
$ psql -U postgres template1
psql: could not connect to server: Bad file descriptor
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?

postgres@gabriel /
$ psql -U postgres template1
psql: server closed the connection unexpectedly
        This probably means the server terminated abnormally
        before or while processing the request.


Owner@gabriel /
$ ls -dl /usr/share/postgresql/data
drwx------+   2 postgres None            0 Jul 16 02:53 /usr/share/postgresql/data

Owner@gabriel /
$ ls -l /usr/share/postgresql/data
total 0

postgres@gabriel /
$ ls -dl /usr/share/postgresql/data
drwx------+   6 postgres None            0 Jul 16 02:53 /usr/share/postgresql/data

postgres@gabriel /
$ ls -l /usr/share/postgresql/data
total 14
-rw-------    1 postgres None            4 Jul 16 02:50 PG_VERSION
drwx------+   4 postgres None            0 Jul 16 02:51 base
drwx------+   2 postgres None            0 Jul 16 02:53 global
drwx------+   2 postgres None            0 Jul 16 02:50 pg_clog
-rw-------    1 postgres None         2329 Jul 16 02:50 pg_hba.conf
-rw-------    1 postgres None         1441 Jul 16 02:50 pg_ident.conf
drwx------+   2 postgres None            0 Jul 16 02:50 pg_xlog
-rw-------    1 postgres None         5178 Jul 16 02:50 postgresql.conf
-rw-------    1 postgres None           59 Jul 16 02:53 postmaster.opts
-rw-------    1 postgres None           51 Jul 16 02:53 postmaster.pid