1 : find postgres datafile location :
red font is postgre database file
-bash-4.2$ ps -ef | grep post
postgres 5355 1 0 09:26 ? 00:00:00 /usr/pgsql-9.5/bin/postgres -D /var/lib/pgsql/9.5/data
postgres 5465 5355 0 09:27 ? 00:00:00 postgres: logger process
2 : run the follwing command , red font part was copied from 1 st step
pg_ctl -D /var/lib/pgsql/9.5/data stop
waiting for server to shut down.... done
server stopped
