#!/bin/sh

DBSTAT=`ps -ef|grep 'postmaster'|grep -v 'grep'`

if [ "$DBSTAT" == "" ];

then     echo "DB down"      DBstus=`ps -ef|grep 'postmaster'|grep -v 'grep'`     while [ "$DBstus" == "" ];     do     if ["$DBstus" == ""];     then     echo "DB starting ..."     /etc/init.d/postgresql start     DBstus=`ps -ef|grep 'postmaster'|grep -v 'grep'`     else     echo "PostgreSQL already running! "     fi     done else     echo "DB running" fi